element_n have_v their_o activity_n and_o they_o be_v in_o all_o body_n whatsoever_o as_o we_o have_v prove_v above_o it_o follow_v evident_o that_o there_o be_v not_o a_o body_n in_o the_o world_n but_o have_v about_o itself_o a_o orb_n of_o emanation_n of_o the_o same_o nature_n which_o that_o body_n be_v of_o within_o the_o compass_n of_o which_o orb_n when_o any_o other_o body_n come_v that_o receive_v a_o immutation_n by_o the_o little_a atom_n whereof_o that_o orb_n be_v compose_v the_o advenient_a body_n seem_v to_o be_v affect_v and_o as_o it_o be_v replenish_v with_o the_o quality_n of_o the_o body_n from_o whence_o they_o issue_n which_o be_v then_o say_v to_o work_v upon_o the_o body_n that_o imbibe_v the_o emanation_n that_o flow_v from_o it_o and_o because_o this_o orb_n regular_o speak_v be_v in_o the_o form_n of_o a_o sphere_n the_o passive_a body_n be_v say_v to_o be_v within_o the_o sphere_n of_o the_o other_o activity_n second_o when_o philosopher_n pronounce_v that_o no_o corporeal_a nature_n can_v operari_fw-la in_o distans_fw-la that_o be_v that_o no_o body_n can_v work_v upon_o a_o other_o remote_a from_o it_o distance_n without_o work_v first_o upon_o the_o body_n that_o lie_v between_o they_o which_o must_v continue_v and_o piece_n up_o the_o operation_n from_o the_o agent_n to_o the_o patient_a the_o reason_n and_o truth_n of_o this_o maxim_n be_v in_o our_o philosophy_n evident_a for_o we_o have_v show_v that_o action_n among_o body_n be_v perform_v for_o the_o most_o part_n by_o the_o emission_n of_o little_a part_n out_o of_o one_o body_n into_o a_o other_o as_o also_o that_o such_o little_a part_n can_v not_o stream_n from_o the_o body_n that_o be_v their_o fountain_n and_o settle_v upon_o a_o remote_a body_n without_o pass_v through_o the_o interjacent_a body_n which_o must_v furnish_v they_o as_o it_o be_v with_o channel_n and_o pipe_n to_o convey_v they_o whither_o they_o be_v to_o go_v it_o follow_v manifest_o that_o the_o active_a emissary_n of_o the_o work_a body_n can_v never_o reach_v their_o distant_a mark_n unless_o they_o be_v successive_o ferry_v over_o the_o medium_n that_o lie_v between_o they_o in_o which_o they_o must_v needs_o leave_v impression_n of_o their_o have_v be_v there_o and_o so_o work_v upon_o it_o in_o their_o passage_n and_o leave_v in_o it_o their_o quality_n and_o complexion_n as_o a_o payment_n for_o their_o waftage_n over_o but_o peradventure_o some_o may_v contend_v axiom_n that_o these_o invisible_a sergeant_n and_o workman_n be_v too_o feeble_a and_o impotent_a to_o perform_v those_o visible_a great_a effect_n we_o daily_o see_v as_o when_o fire_n at_o the_o length_n burn_v a_o board_n that_o have_v be_v a_o great_a while_n oppose_v to_o it_o though_o it_o touch_v not_o the_o body_n of_o the_o fire_n or_o when_o a_o loadestone_n draw_v unto_o it_o a_o great_a weight_n of_o iron_n that_o be_v distant_a from_o it_o unto_o who_o we_o shall_v reply_v that_o if_o he_o will_v not_o grant_v these_o subtle_a emanation_n from_o the_o agent_n body_n to_o be_v the_o immediate_a worker_n of_o these_o effect_n he_o must_v allot_v that_o efficacy_n unto_o the_o whole_a corpulency_n of_o all_o the_o agent_n work_v in_o bulk_n for_o beside_o the_o whole_a and_o the_o part_n there_o be_v no_o three_o thing_n to_o be_v consider_v in_o body_n since_o they_o be_v constitute_v by_o quantity_n but_o the_o whole_a can_v not_o work_v otherwise_o then_o by_o local_a motion_n which_o in_o this_o case_n it_o can_v not_o do_v because_o by_o the_o supposition_n it_o be_v determine_v to_o keep_v its_o distance_n from_o the_o passive_a body_n and_o not_o to_o move_v towards_o it_o therefore_o this_o be_v impossible_a whereas_o the_o other_o can_v appear_v but_o difficult_a at_o the_o worst_a and_o therefore_o must_v be_v admit_v when_o no_o better_a and_o more_o intelligible_a solution_n can_v be_v find_v but_o withal_o we_o must_v note_v that_o it_o be_v not_o our_o intention_n to_o say_v but_o that_o it_o may_v in_o some_o circumstance_n happen_v that_o some_o particular_a action_n or_o effect_n may_v be_v wrought_v in_o a_o remote_a part_n or_o body_n which_o shall_v not_o be_v the_o same_o in_o the_o intermediate_v body_n that_o lie_v between_o the_o agent_n and_o the_o patient_a and_o that_o convey_v the_o agent_n work_v atom_n to_o the_o other_o body_n as_o for_o example_n when_o tinder_n or_o naphtha_n be_v by_o fire_n make_v to_o burn_v at_o a_o yard_n distance_n from_o it_o when_o the_o interjacent_a air_n be_v but_o warm_v by_o that_o fire_n or_o when_o the_o sun_n by_o mean_n of_o a_o burn_a glass_n or_o of_o some_o other_o reflection_n set_v some_o body_n on_o fire_n and_o yet_o only_o enlighten_v the_o glass_n and_o the_o air_n that_o be_v in_o the_o way_n the_o reason_n of_o which_o be_v manifest_a to_o be_v the_o diverse_a disposition_n of_o the_o different_a subject_n in_o regard_n of_o the_o agent_n and_o therefore_o it_o be_v no_o wonder_n that_o diverse_a effect_n shall_v be_v produce_v according_a to_o those_o diverse_a disposition_n a_o three_o position_n among_o philosopher_n be_v suffering_n that_o all_o body_n which_o work_v upon_o other_o do_v likewise_o at_o the_o same_o time_n wherein_o they_o work_v suffer_v from_o those_o they_o work_v upon_o and_o contrariwise_o that_o all_o body_n which_o suffer_v from_o other_o do_v at_o the_o same_o time_n work_v back_o again_o upon_o they_o for_o the_o better_a understanding_n whereof_o let_v we_o consider_v that_o all_o action_n among_o body_n be_v either_o pure_o local_a motion_n or_o else_o local_a motion_n with_o certain_a particularity_n which_o give_v it_o a_o particular_a name_n as_o when_o we_o express_v the_o local_a motion_n of_o little_a atom_n of_o fire_n or_o of_o earth_n or_o water_n upon_o and_o into_o other_o body_n by_o the_o word_n of_o heat_n or_o cool_a and_o so_o of_o the_o like_a now_o if_o the_o action_n be_v pure_a local_a motion_n and_o consequent_o the_o effect_n produce_v by_o that_o action_n be_v mere_o change_v of_o place_n we_o must_v call_v to_o mind_n how_o two_o dense_a body_n move_v one_o against_o the_o other_o do_v each_o of_o they_o bear_v before_o they_o some_o little_a quantity_n of_o a_o rare_a body_n immediate_o join_v unto_o they_o and_o consequent_o these_o more_o rare_a body_n must_v be_v the_o first_o to_o feel_v the_o power_n of_o the_o dense_a body_n and_o to_o receive_v impression_n from_o their_o motion_n each_o of_o they_o by_o the_o opposite_a rare_a body_n which_o like_o a_o huissier_n go_v before_o to_o make_v way_n for_o his_o follow_a master_n that_o oblige_v he_o to_o this_o service_n now_o when_o these_o rarey_a usher_n have_v struggle_v a_o while_n like_o the_o first_o light_o arm_v rank_n of_o two_o army_n in_o the_o interjacent_a field_n between_o their_o main_a battaly_n that_o follow_v they_o close_o at_o the_o heel_n they_o must_v at_o the_o length_n yield_v when_o they_o be_v overbear_v by_o a_o great_a weight_n than_o they_o can_v sustain_v and_o then_o they_o recoil_v back_o as_o it_o be_v to_o save_v themselves_o by_o get_v in_o among_o the_o file_n of_o the_o dense_a body_n that_o drive_v they_o on_o which_o not_o open_v to_o admit_v they_o and_o yet_o they_o still_o fly_v violent_o from_o the_o master_a force_n that_o pursue_v they_o they_o press_v so_o hard_o upon_o what_o at_o the_o first_o press_v they_o on_o as_o notwithstanding_o their_o density_n and_o strength_n they_o force_v they_o to_o retire_v back_o for_o unless_o they_o do_v so_o they_o be_v not_o of_o the_o number_n of_o those_o that_o work_n upon_o one_o a_o other_o and_o this_o retire_n be_v either_o on_o both_o side_n or_o but_o of_o one_o side_n if_o both_o than_o it_o be_v evident_a how_o each_o of_o they_o be_v a_o agent_n and_o each_o of_o they_o a_o sufferer_n each_o of_o they_o overcome_v his_o opposite_a in_o such_o sort_n as_o himself_o likewise_o receive_v blow_n and_o loss_n but_o if_o only_a one_o of_o the_o dense_a body_n be_v so_o shocked_a as_o to_o recoil_v back_o then_o that_o only_o suffer_v in_o its_o body_n and_o the_o other_o suffer_v only_o in_o its_o virtue_n that_o be_v in_o the_o air_n or_o other_o rare_a body_n it_o send_v before_o it_o which_o it_o drive_v with_o such_o a_o violence_n that_o it_o master_v and_o quell_v the_o opposition_n of_o the_o other_o body_n before_o it_o can_v reach_v to_o shake_v the_o dense_a body_n before_o which_o it_o run_v yet_o that_o rare_a body_n must_v be_v press_v and_o break_v into_o in_o some_o measure_n by_o the_o encounter_n of_o the_o other_o which_o though_o never_o so_o weak_a yet_o make_v some_o resistance_n but_o much_o more_o when_o it_o come_v to_o grapple_v with_o the_o dense_a body_n itself_o and_o so_o
which_o be_v in_o the_o flame_n of_o a_o little_a candle_n will_v appear_v unto_o we_o if_o it_o be_v dilate_v and_o stretch_v out_o to_o the_o utmost_a extent_n that_o excess_n of_o rarity_n can_v bring_v it_o unto_o suppose_v that_o so_o much_o flame_n as_o will_v fill_v a_o cone_n of_o two_o inch_n height_n and_o half_a a_o inch_n diameter_n shall_v suffer_v so_o great_a a_o expansion_n as_o to_o replenish_v with_o his_o light_a body_n a_o large_a chamber_n and_o then_o what_o can_v we_o imagine_v it_o will_v seem_v to_o be_v how_o will_v the_o continual_a drive_v it_o into_o a_o thin_a substance_n as_o it_o stream_v in_o a_o perpetual_a flood_n from_o the_o flame_n seem_v to_o play_v upon_o the_o paper_n and_o then_o judge_v whether_o it_o be_v likely_a to_o be_v a_o body_n or_o no_o when_o our_o discourse_n suggest_v unto_o we_o that_o if_o it_o be_v a_o body_n those_o very_a appearance_n must_v follow_v which_o our_o eye_n give_v we_o evidence_n be_v so_o in_o effect_n if_o gold_n beat_v into_o so_o airy_a a_o thinnenesse_n as_o we_o see_v guilder_n use_v do_v remain_v still_o gold_n notwithstanding_o the_o wonderful_a expansion_n of_o it_o why_o shall_v we_o not_o allow_v that_o fire_n dilate_v to_o his_o utmost_a period_n shall_v still_o remain_v fire_n though_o extreme_o rarify_v beyond_o what_o be_v be_v we_o know_v that_o fire_n be_v the_o rare_a and_o the_o subtle_a substance_n that_o nature_n have_v make_v among_o body_n fire_n and_o we_o know_v likewise_o that_o it_o be_v engender_v by_o the_o destroy_n and_o feed_v upon_o some_o other_o more_o gross_a body_n let_v we_o then_o calculate_v when_o the_o oil_n or_o tallow_n or_o wax_v of_o a_o candle_n or_o the_o bulk_n of_o a_o fagott_n or_o billet_n be_v dilate_v and_o rarify_v to_o the_o degree_n of_o fire_n how_o vast_a a_o place_n must_v it_o take_v up_o to_o this_o let_v we_o add_v what_o aristotle_n teach_v we_o that_o fire_n be_v not_o like_o a_o stand_a pool_n which_o continue_v full_a with_o the_o same_o water_n and_o as_o it_o have_v no_o waist_n so_o have_v it_o no_o supply_n but_o it_o be_v a_o fluent_a and_o brookelike_a current_n which_o also_o we_o may_v learn_v out_o of_o the_o perpetual_a nutriment_n it_o require_v for_o a_o new_a part_n of_o fuel_n be_v convert_v into_o a_o new_a part_n of_o fire_n as_o we_o may_v observe_v in_o the_o little_a atom_n of_o oil_n or_o melt_v wax_n that_o continual_o ascend_v apace_o up_o the_o week_n of_o a_o burn_a candle_n or_o lamp_n of_o necessity_n the_o former_a must_v be_v go_v to_o make_v room_n for_o the_o latter_a and_o so_o a_o new_a part_n of_o the_o river_n be_v continual_o flow_v now_o then_o this_o perpetual_a flux_n of_o fire_n be_v make_v of_o a_o gross_a body_n that_o so_o rarify_v will_v take_v up_o such_o a_o vast_a room_n if_o it_o die_v not_o at_o the_o instant_n of_o its_o birth_n but_o have_v some_o time_n to_o subsist_v be_v it_o never_o so_o short_a it_o must_v needs_o run_v some_o distance_n from_o the_o fountain_n whence_o it_o spring_v which_o if_o it_o do_v you_o need_v not_o wonder_n that_o there_o shall_v be_v so_o great_a a_o extent_n of_o fire_n as_o be_v requisite_a to_o fill_v all_o that_o space_n which_o light_n replenish_v nor_o that_o it_o shall_v be_v still_o supply_v with_o new_a as_o fast_o as_o the_o cold_a of_o the_o air_n kill_v it_o for_o consider_v that_o flame_n be_v a_o much_o grosser_n substance_n then_o pure_a fire_n by_o reason_n of_o the_o mixture_n with_o it_o of_o that_o viscous_a oily_a matter_n which_o be_v draw_v out_o of_o the_o wood_n and_o candle_n serve_v for_o fuel_n to_o the_o fire_n and_o be_v by_o little_a and_o little_o convert_v into_o it_o and_o with_o all_o reflect_v upon_o the_o nature_n and_o motion_n of_o fire_n which_o be_v to_o dilate_v itself_o extreme_o and_o to_o fly_v all_o about_o from_o the_o centre_n to_o the_o circumference_n you_o can_v not_o choose_v but_o conceive_v that_o the_o pure_a fire_n struggle_v to_o break_v away_o from_o the_o oily_a fuel_n which_o be_v still_o turn_v into_o new_a fire_n do_v at_o length_n free_a his_o wing_n from_o that_o birdlime_n and_o then_o fly_v abroad_o with_o extreme_a swiftness_n and_o swell_v and_o dilate_v itself_o to_o a_o huge_a bulk_n now_o that_o it_o have_v get_v liberty_n and_o so_o fill_v a_o vast_a room_n but_o remain_v still_o fire_n till_o it_o die_v which_o it_o no_o soon_o do_v but_o it_o be_v still_o supply_v with_o new_a stream_n of_o it_o that_o be_v continual_o strain_v and_o as_o it_o be_v squeeze_a out_o of_o the_o thick_a flame_n which_o do_v imprison_v it_o and_o keep_v it_o within_o it_o till_o grow_v full_a of_o fire_n than_o it_o can_v contain_v by_o reason_n of_o the_o continual_a attenuate_a the_o oily_a part_n of_o it_o and_o convert_n they_o into_o fire_n it_o give_v liberty_n unto_o those_o part_n of_o fire_n that_o be_v next_o the_o superficies_n to_o fly_v whither_o their_o nature_n will_v carry_v they_o and_o thus_o discourse_n will_v inform_v a_o blind_a man_n after_o he_o have_v well_o reflect_v on_o the_o nature_n of_o fire_n how_o it_o must_v needs_o fill_v a_o mighty_a extent_n of_o place_n though_o it_o have_v but_o a_o narrow_a begin_n at_o the_o springhead_n of_o it_o and_o that_o there_o by_o reason_n of_o the_o condensation_n of_o it_o and_o mixture_n with_o a_o grosser_n body_n it_o must_v needs_o burn_v other_o body_n but_o that_o when_o it_o be_v free_v from_o such_o mixture_n and_o suffer_v a_o extreme_a expansion_n it_o can_v not_o have_v force_n to_o burn_v but_o may_v have_v mean_n to_o express_v itself_o to_o be_v there_o present_a by_o some_o operation_n of_o it_o upon_o some_o body_n that_o be_v refine_v and_o subtilise_v enough_o to_o perceive_v it_o and_o this_o operation_n a_o see_a man_n will_v tell_v you_o be_v do_v upon_o his_o eye_n who_o fittenesse_n to_o receive_v impression_n from_o so_o subtle_a a_o agent_n anatomist_n will_v teach_v you_o and_o i_o remember_v how_o a_o blind_a schoolmaster_n that_o i_o keep_v in_o my_o house_n to_o teach_v my_o child_n who_o have_v extreme_a subtle_a spirit_n and_o a_o great_a tenderness_n through_o his_o whole_a body_n and_o meet_v with_o few_o distraction_n to_o hinder_v he_o from_o observe_v any_o impression_n never_o so_o nice_o make_v upon_o he_o use_v often_o to_o tell_v i_o that_o he_o feel_v it_o very_o perceptible_o in_o several_a part_n of_o his_o body_n but_o especial_o in_o his_o brain_n but_o to_o settle_v we_o more_o firm_o in_o the_o persuasion_n of_o light_a his_o be_v a_o body_n and_o consequent_o fire_n body_n let_v we_o consider_v that_o the_o property_n of_o a_o body_n be_v perpetual_o incident_a to_o light_v look_v what_o rule_v a_o ball_n will_v keep_v in_o its_o reboundes_a the_o same_o do_v light_n in_o its_o reflection_n and_o the_o same_o demonstration_n do_v alike_o convince_v the_o one_o and_o the_o other_o beside_o light_n be_v break_v like_o a_o body_n as_o when_o it_o be_v snap_v in_o piece_n by_o a_o tough_a body_n it_o be_v gather_v together_o into_o a_o little_a room_n by_o look_v or_o burn_a glass_n as_o water_n be_v by_o order_v the_o gutter_n of_o a_o house_n so_o as_o to_o bring_v into_o one_o cistern_n all_o that_o rain_v dispersedly_z upon_o the_o whole_a roof_n it_o be_v sever_v and_o disperse_v by_o other_o glass_n and_o be_v to_o be_v wrought_v upon_o and_o cast_v hither_o and_o thither_o at_o pleasure_n all_o by_o the_o rule_n of_o other_o body_n and_o what_o be_v do_v in_o light_n the_o same_o will_v likewise_o be_v do_v in_o heat_n in_o cold_a in_o wind_n and_o in_o sound_n and_o the_o very_a same_o instrument_n that_o be_v make_v for_o light_n will_v work_v their_o effect_n in_o all_o these_o other_o if_o they_o be_v due_o manage_v so_o that_o certain_o be_v it_o not_o for_o the_o authority_n of_o aristotle_n and_o of_o his_o learned_a follower_n that_o press_v we_o on_o the_o one_o side_n and_o for_o the_o seemingnesse_n of_o those_o reason_n we_o have_v already_o mention_v which_o persuade_v we_o on_o the_o other_o side_n our_o very_a eye_n will_v carry_v we_o by_o stream_n into_o this_o consent_n that_o light_n be_v no_o other_o thing_n but_o the_o nature_n and_o substance_n of_o fire_n spread_v far_o and_o wide_a and_o free_v from_o the_o mixture_n of_o all_o other_o gross_a body_n which_o will_v appear_v yet_o more_o evident_a in_o the_o solution_n of_o the_o opposition_n we_o have_v bring_v against_o our_o own_o opinion_n for_o in_o they_o there_o will_v occur_v other_o argument_n of_o no_o less_o importance_n to_o prove_v this_o verity_n than_o these_o we_o have_v already_o propose_v the_o seven_o chapter_n two_o
objection_n answer_v against_o light_n be_v fire_n with_o a_o more_o ample_a proof_n of_o its_o be_v such_o have_v then_o say_v thus_o much_o to_o persuade_v we_o of_o the_o corporeity_n of_o this_o subtle_a thing_n heat_n that_o so_o quaint_o play_v with_o our_o eye_n we_o will_v in_o the_o next_o place_n examine_v those_o objection_n that_o at_o the_o beginning_n we_o do_v set_v down_o against_o its_o be_v a_o body_n and_o if_o after_o a_o through_o discussion_n of_o they_o we_o find_v they_o do_v in_o truth_n conclude_v nothing_o of_o what_o at_o the_o first_o sight_n they_o bear_v so_o great_a a_o show_n of_o but_o that_o we_o shall_v be_v able_a perfect_o to_o solve_v and_o enerue_v their_o force_n no_o body_n will_v think_v it_o rashness_n in_o we_o to_o crave_v leave_n of_o aristotle_n that_o we_o may_v dissent_v from_o he_o in_o a_o matter_n that_o he_o have_v not_o look_v to_o the_o bottom_n of_o and_o who_o opinion_n therein_o can_v not_o be_v defend_v from_o plain_a contradiction_n and_o impossibility_n it_o be_v true_a never_o any_o one_o man_n look_v so_o far_o as_o he_o into_o the_o bowel_n of_o nature_n he_o may_v right_o be_v term_v the_o gemus_n of_o it_o and_o whosoever_o follow_v his_o principle_n in_o the_o main_a can_v not_o be_v lead_v into_o error_n but_o we_o must_v not_o believe_v that_o he_o or_o any_o man_n else_o that_o rely_v upon_o the_o strength_n and_o negotiation_n of_o his_o own_o reason_n ever_o have_v a_o privilege_n of_o infallibility_n entail_v to_o all_o he_o say_v let_v we_o then_o admire_v he_o for_o what_o he_o have_v deliver_v we_o and_o where_o he_o fall_v short_a or_o be_v weary_a in_o his_o search_n and_o suffer_v himself_o to_o be_v bear_v down_o by_o popular_a opinion_n against_o his_o own_o principle_n which_o happen_v very_o seldom_o to_o he_o let_v we_o seek_v to_o supply_v and_o relieve_v he_o but_o to_o pursue_v our_o intent_n we_o will_v begin_v with_o answer_v the_o three_o objection_n which_o be_v that_o if_o light_n be_v fire_n it_o must_v heat_n as_o well_o as_o enlighten_v where_o it_o shine_v there_o be_v no_o doubt_n but_o it_o do_v so_o as_o be_v evident_a by_o the_o weather_n glass_n and_o other_o artificial_a musical_a instrument_n as_o organ_n and_o virginal_n that_o play_v by_o themselves_o which_o cornelius_n drebbel_n that_o admirable_a master_n of_o mechanike_n make_v to_o show_v the_o king_n all_o which_o depend_v upon_o the_o rarefaction_n and_o condensation_n of_o some_o subtle_a body_n conserve_v in_o a_o cavity_n within_o the_o bulk_n of_o the_o whole_a instrument_n for_o as_o soon_o as_o the_o sun_n shine_v they_o will_v have_v motion_n and_o play_v their_o part_n and_o there_o be_v no_o doubt_n but_o that_o grow_v out_o of_o the_o rarefaction_n of_o the_o subtle_a liquor_n he_o make_v use_v of_o which_o be_v dilate_v as_o soon_o as_o the_o air_n be_v warm_v by_o the_o sun_n beam_n of_o who_o operation_n it_o be_v so_o sensible_a that_o they_o no_o soon_o leave_v the_o horizon_n but_o its_o motion_n cease_v and_o if_o but_o a_o cloud_n come_v between_o the_o instrument_n and_o they_o the_o music_n will_v present_o go_v slow_a time_n and_o the_o ancient_a miracle_n of_o memnon_n statue_n seem_v to_o be_v a_o juggle_a of_o the_o aehiopian_a priest_n make_v by_o the_o like_a invention_n light_n but_o though_o he_o and_o they_o find_v some_o spiritual_a and_o refine_a matter_n that_o will_v receive_v such_o notable_a impression_n from_o so_o small_a alteration_n of_o temper_n yet_o it_o be_v no_o wonder_n that_o our_o gross_a body_n be_v not_o sensible_a of_o they_o for_o we_o can_v not_o feel_v heat_n unless_o it_o be_v great_a than_o that_o which_o be_v in_o our_o sense_n and_o the_o heat_n there_o must_v be_v in_o proportion_n to_o the_o heat_n of_o our_o blood_n which_o be_v in_o a_o high_a degree_n of_o warm_v and_o therefore_o it_o be_v very_o possible_a that_o a_o exceed_v rarify_v fire_n may_v cause_v a_o far_o less_o impression_n of_o heat_n than_o we_o be_v able_a to_o feel_v consider_v how_o if_o you_o set_v pure_a spirit_n of_o wine_n on_o fire_n and_o so_o convert_v it_o into_o actual_a flame_n yet_o it_o will_v not_o burn_v nor_o scarce_o warm_v your_o hand_n and_o then_o can_v you_o expect_v that_o the_o light_n of_o a_o candle_n which_o fill_v a_o great_a room_n shall_v burn_v or_o warm_v you_o as_o far_o as_o it_o shine_v if_o you_o will_v exact_o know_v what_o degree_n of_o heat_n and_o power_n of_o burn_a that_o light_n have_v which_o for_o example_n shine_v upon_o the_o wall_n in_o a_o great_a chamber_n in_o the_o midst_n whereof_o there_o stand_v a_o candle_n do_v but_o calculate_v what_o overproportion_n of_o quantity_n all_o the_o light_n in_o the_o whole_a room_n bear_v to_o the_o quantity_n of_o the_o little_a flame_n at_o the_o top_n of_o the_o candle_n and_o that_o be_v the_o overproportion_n of_o the_o force_n of_o burn_v which_o be_v in_o the_o candle_n to_o the_o force_n of_o burn_v which_o be_v in_o so_o much_o light_n at_o the_o wall_n as_o in_o extension_n be_v equal_a to_o the_o flame_n of_o the_o candle_n which_o when_o you_o have_v consider_v you_o will_v not_o quarrel_v att_z it_o be_v not_o warm_v you_o at_o that_o distance_n although_o you_o grant_v it_o to_o be_v fire_n stream_v out_o from_o the_o flame_n as_o from_o the_o spring_n that_o feed_v it_o and_o extreme_o dilate_v according_a to_o the_o nature_n of_o fire_n when_o it_o be_v at_o liberty_n by_o go_v so_o far_o without_o any_o other_o gross_a body_n to_o imprison_v or_o clog_n it_o it_o be_v manifest_a that_o this_o rule_n of_o examine_v the_o proportion_n of_o burn_v in_o so_o much_o of_o the_o light_n as_o the_o flame_n be_v by_o calculate_v the_o proportion_n of_o the_o quantity_n or_o extension_n of_o all_o the_o light_n in_o the_o room_n to_o the_o extension_n of_o the_o flame_n of_o the_o candle_n and_o then_o compare_v the_o flame_n of_o the_o candle_n to_o a_o part_n of_o light_n equal_a in_o extension_n unto_o it_o be_v a_o good_a and_o infallible_a one_o if_o we_o abstract_a from_o accidental_a inequality_n since_o both_o the_o light_n and_o the_o flame_n be_v in_o a_o perpetual_a flux_n and_o all_o the_o light_n be_v first_o in_o the_o flame_n which_o be_v the_o spring_n from_o whence_o it_o continual_o flow_v as_o in_o a_o river_n wherein_o every_o part_n run_v with_o a_o settle_a stream_n though_o one_o place_n be_v straight_a and_o a_o other_o broad_a yet_o of_o necessity_n since_o all_o the_o water_n that_o be_v in_o the_o broad_a place_n come_v out_o of_o the_o narrow_a it_o must_v follow_v that_o in_o equal_a portion_n of_o time_n there_o be_v no_o more_o water_n where_o it_o have_v the_o liberty_n of_o a_o large_a channel_n then_o where_o the_o bank_n press_v it_o into_o a_o narrow_a bed_n so_o that_o there_o be_v no_o inequality_n in_o the_o bottom_n in_o like_a manner_n if_o in_o a_o large_a stove_n a_o basin_n of_o water_n be_v convert_v into_o steam_n that_o rarify_v water_n which_o then_o fill_v the_o whole_a stove_n be_v no_o more_o than_o what_o the_o basin_n contain_v before_o and_o consequent_o the_o power_n of_o moisten_v which_o be_v in_o a_o foot_n extension_n for_o example_n of_o the_o stove_n wherein_o that_o steam_n be_v must_v be_v in_o proportion_n to_o the_o virtue_n of_o wet_n in_o the_o foot_n extension_n of_o water_n as_o the_o quantity_n of_o that_o great_a room_n which_o the_o steam_n fill_v be_v to_o the_o quantity_n of_o the_o water_n contain_v in_o the_o basin_n for_o although_o the_o rarify_v water_n be_v not_o in_o every_o least_o part_n of_o that_o great_a place_n it_o seem_v to_o take_v up_o by_o reason_n that_o there_o be_v air_n in_o which_o it_o must_v swim_v yet_o the_o power_n of_o wet_v that_o be_v in_o the_o basin_n of_o water_n be_v dilate_v through_o the_o whole_a room_n by_o the_o conjunction_n of_o the_o mist_n or_o dew_n to_o all_o the_o sensible_a part_n of_o the_o air_n that_o be_v in_o the_o room_n and_o consequent_o the_o power_n of_o wet_n which_o be_v in_o any_o foot_n of_o that_o room_n be_v in_o a_o manner_n as_o much_o less_o than_o the_o power_n of_o wet_n which_o be_v in_o the_o foot_n of_o water_n as_o if_o the_o water_n be_v rarify_v to_o the_o quantity_n of_o the_o whole_a room_n and_o no_o air_n be_v leave_v with_o it_o and_o in_o the_o same_o manner_n it_o fare_v with_o dilate_a fire_n as_o it_o do_v with_o dilate_a water_n with_o only_a this_o difference_n peradventure_o that_o fire_n grow_v pure_a and_o more_o towards_o its_o own_o nature_n by_o dilatation_n whereas_o water_n become_v more_o mix_v and_o be_v carry_v from_o its_o nature_n by_o suffer_v the_o like_a
and_o be_v contain_v many_o time_n in_o the_o bigness_n of_o the_o sight_n of_o a_o man_n eye_n out_o of_o which_o we_o may_v gather_v what_o a_o infinity_n of_o object_n may_v seem_v unto_o we_o to_o cross_v themselves_o in_o the_o same_o indivisible_a place_n and_o yet_o may_v have_v room_n sufficient_a for_o every_o one_o to_o pass_v his_o way_n without_o hinder_v his_o fellow_n wherefore_o see_v that_o one_o single_a light_n can_v not_o send_v ray_n enough_o to_o fill_v every_o little_a space_n of_o air_n that_o be_v capable_a of_o light_n and_o the_o less_o the_o further_a it_o be_v from_o the_o flame_n it_o be_v obvious_a enough_o to_o conceive_v how_o in_o the_o space_n where_o the_o air_n be_v there_o be_v capacity_n for_o the_o ray_n of_o many_o candle_n which_o be_v well_o sum_v up_o will_v take_v away_o the_o great_a admiration_n how_o the_o beam_n of_o light_n though_o they_o be_v corporeal_a can_v in_o such_o great_a multitude_n without_o hinder_v one_o a_o other_o enter_v into_o body_n and_o come_v to_o our_o eye_n and_o will_v show_v that_o it_o be_v the_o narrowness_n of_o our_o capacity_n and_o not_o the_o defect_n of_o nature_n which_o make_v these_o difficulty_n seem_v so_o great_a for_o she_o have_v sufficient_o provide_v for_o all_o these_o subtle_a operation_n of_o fire_n as_o also_o for_o the_o entrance_n of_o it_o into_o glass_n and_o into_o all_o other_o solid_a body_n that_o be_v diaphanous_a upon_o which_o be_v ground_v the_o last_o instance_n the_o second_o objection_n press_v for_o all_o such_o body_n be_v constitute_v by_o the_o operation_n of_o fire_n which_o be_v always_o in_o motion_n there_o must_v needs_o be_v way_n leave_v for_o it_o both_o to_o enter_v in_o and_o to_o evaporate_v out_o and_o this_o be_v most_o evident_a in_o glass_n which_o be_v wrought_v by_o a_o extreme_a violent_a fire_n and_o swell_a with_o it_o as_o water_n and_o other_o thing_n do_v by_o the_o mixture_n of_o fire_n must_v necessary_o have_v great_a store_n of_o fire_n in_o itself_o while_o it_o be_v boil_v as_o we_o see_v by_o its_o be_v red_a hot_a and_o hence_o it_o be_v that_o the_o workman_n be_v force_v to_o let_v it_o cool_v by_o degree_n in_o such_o relentinge_n of_o fire_n as_o they_o call_v their_o neal_a heat_n lest_o it_o shall_v shiver_v in_o piece_n by_o a_o violent_a succeed_a of_o air_n in_o the_o room_n of_o the_o fire_n for_o that_o be_v of_o great_a part_n than_o the_o fire_n will_v strain_v the_o pore_n of_o the_o glass_n too_o soddain_o and_o break_v it_o all_o in_o piece_n to_o get_v ingression_n whereas_o in_o those_o neal_a heat_n the_o air_n be_v rare_a lesser_a part_n of_o it_o succeed_v to_o the_o fire_n and_o leisurely_o stretch_v the_o pore_n without_o hurt_n and_o therefore_o we_o need_v not_o wonder_v that_o light_n pass_v so_o easy_o through_o glass_n and_o much_o less_o that_o it_o get_v through_o other_o body_n see_v the_o experience_n of_o alchemisst_n do_v assure_v we_o that_o it_o be_v hard_o to_o find_v any_o other_o body_n so_o impenetrable_a as_o glass_n sense_n but_o now_o to_o come_v to_o the_o answer_n of_o the_o first_o and_o in_o appearance_n most_o powerful_a objection_n against_o the_o corporeity_n of_o light_n which_o urge_v that_o his_o motion_n be_v perform_v in_o a_o instant_n and_o therefore_o can_v not_o belong_v to_o what_o be_v material_a and_o clothe_v with_o quantity_n we_o will_v endeavour_v to_o show_v how_o unable_a the_o sense_n be_v to_o judge_v of_o sundry_a sort_n of_o motion_n of_o body_n and_o how_o gross_o it_o be_v mistake_v in_o they_o and_o then_o when_o it_o shall_v appear_v that_o the_o motion_n of_o light_n must_v necessary_o be_v hard_o to_o be_v observe_v then_o those_o other_o i_o conceive_v all_o that_o be_v raise_v against_o our_o opinion_n by_o so_o incompetent_a a_o judge_n will_v fall_v flat_a to_o the_o ground_n first_o then_o let_v i_o put_v the_o reader_n in_o mind_n how_o if_o ever_o he_o mark_v child_n when_o they_o play_v with_o firesticke_n they_o move_v and_o whirl_v they_o round_o so_o fast_o that_o the_o motion_n will_v cozen_v their_o eye_n and_o represent_v a_o entire_a circle_n of_o fire_n unto_o they_o and_o be_v it_o somewhat_o distant_a in_o a_o dark_a night_n that_o one_o play_v so_o with_o a_o light_a torch_n it_o will_v appear_v a_o constant_a wheel_n of_o fire_n without_o any_o discern_a of_o motion_n in_o it_o and_o then_o let_v he_o consider_v how_o slow_a a_o motion_n that_o be_v in_o respect_n of_o what_o it_o be_v possible_a a_o body_n may_v participate_v of_o and_o he_o may_v safe_o conclude_v that_o it_o be_v no_o wonder_n though_o the_o motion_n of_o light_n be_v not_o descry_v and_o that_o indeed_o no_o argument_n can_v be_v make_v from_o thence_o to_o prove_v that_o light_n be_v not_o a_o body_n but_o let_v we_o examine_v this_o consideration_n a_o little_a further_o and_o compare_v it_o to_o the_o motion_n of_o the_o earth_n or_o heaven_n let_v the_o appear_a circle_n of_o the_o fire_n be_v some_o three_o foot_n diameter_n and_o the_o time_n of_o one_o entire_a circulation_n of_o it_o be_v the_o sixty_v part_n of_o a_o minute_n of_o which_o minute_n there_o be_v 60._o in_o a_o hour_n so_o that_o in_o a_o whole_a day_n there_o will_v be_v but_o 86400._o of_o these_o part_n of_o time_n now_o the_o diameter_n of_o the_o wheel_n of_o fire_n be_v but_o of_o three_o foot_n the_o whole_a quantity_n of_o space_n that_o it_o move_v in_o that_o atom_n of_o time_n will_v be_v at_o the_o most_o 10._o foot_n which_o be_v three_o pace_n and_o a_o foot_n of_o which_o part_n there_o be_v near_o eleven_o million_o in_o the_o compass_n of_o the_o earth_n so_o that_o if_o the_o earth_n be_v move_v round_o in_o 24._o hour_n it_o must_v go_v near_o 130._o time_n as_o fast_o as_o the_o boy_n stick_v do_v which_o by_o its_o swift_a motion_n deceive_v our_o eye_n but_o if_o we_o allow_v the_o sun_n the_o moon_n and_o the_o fix_a star_n to_o move_v how_o extreme_a swift_a must_v their_o flight_n be_v and_o how_o imperceptible_a will_v their_o motion_n be_v in_o such_o a_o compass_n as_o our_o sight_n will_v reach_v unto_o and_o this_o be_v certain_a that_o whether_o the_o earth_n or_o they_o do_v move_v the_o appearance_n to_o we_o be_v the_o same_o it_o be_v evident_a that_o as_o now_o they_o can_v not_o be_v perceive_v to_o move_v as_o peradventure_o they_o do_v not_o so_o it_o will_v be_v the_o very_a same_o in_o show_n to_o we_o although_o they_o do_v move_v if_o the_o sun_n be_v near_o we_o and_o gallop_v at_o that_o rate_n sure_o we_o can_v not_o distinguish_v between_o the_o beginning_n and_o end_v of_o his_o race_n but_o there_o will_v appear_v one_o permanent_a line_n of_o light_n from_o east_n to_o west_n without_o any_o motion_n at_o all_o as_o the_o torch_n seem_v to_o make_v with_o so_o much_o a_o slow_a motion_n one_o permanent_a immooveable_a wheel_n of_o fire_n but_o contrary_a to_o this_o effect_n we_o see_v that_o the_o sun_n and_o star_n by_o only_o be_v remove_v further_o from_o our_o eye_n do_v cousin_n our_o sight_n so_o gross_o that_o we_o can_v not_o discern_v they_o to_o be_v move_v at_o all_o one_o will_v imagine_v that_o so_o rapide_fw-la and_o swift_a a_o motion_n shall_v be_v perceive_v in_o some_o sort_n or_o other_o which_o whether_o it_o be_v in_o the_o earth_n or_o in_o they_o be_v all_o one_o to_o this_o purpose_n either_o we_o shall_v see_v they_o change_v their_o place_n while_o we_o look_v upon_o they_o as_o arrow_n and_o bird_n do_v when_o they_o fly_v in_o the_o air_n or_o else_o they_o shall_v make_v a_o stream_n of_o light_n big_a than_o themselves_o as_o the_o torch_n do_v but_o none_o of_o all_o this_o happen_v let_v we_o gaze_v upon_o they_o so_o long_o and_o so_o attentive_o that_o our_o eye_n be_v dazzle_v with_o look_v and_o all_o that_o while_o they_o seem_v to_o stand_v immooveable_a and_o our_o eye_n can_v give_v we_o no_o account_n of_o their_o journey_n till_o it_o be_v end_v they_o discern_v it_o not_o while_o it_o be_v in_o do_v so_o that_o if_o we_o consult_v with_o no_o better_a cownsailour_n than_o they_o we_o may_v wonder_v to_o see_v that_o body_n at_o night_n set_v in_o the_o west_n which_o in_o the_o morning_n we_o behold_v rise_v in_o the_o east_n but_o that_o which_o seem_v to_o be_v yet_o more_o strange_a be_v that_o these_o body_n move_v cross_v we_o and_o nevertheless_o be_v not_o perceive_v to_o have_v any_o motion_n at_o all_o consider_v then_o how_o much_o easy_o it_o be_v for_o a_o thing_n that_o move_v towards_o we_o to_o be_v with_o we_o before_o we_o be_v aware_a a_o nimble_a fencer_n will_v put_v in_o
light_a which_o two_o term_n pass_v through_o all_o the_o body_n we_o have_v notice_n of_o therefore_o proceed_v upon_o our_o ground_n before_o lay_v to_o wit_n that_o no_o body_n can_v be_v move_v of_o itself_o we_o may_v determine_v those_o motion_n to_o be_v natural_a unto_o body_n which_o have_v constant_a cause_n or_o percutient_n to_o make_v they_o alwayse_v in_o such_o body_n and_o those_o violent_a which_o be_v contrary_a to_o such_o natural_a motion_n which_o be_v suppose_v we_o must_v search_v out_o the_o cause_n that_o so_o constant_o make_v some_o body_n descend_v towards_o the_o centre_n or_o middle_n of_o the_o earth_n and_o other_o to_o rise_v and_o go_v from_o the_o centre_n by_o which_o the_o world_n be_v subject_a to_o those_o restless_a motion_n that_o keep_v all_o thing_n in_o perpetual_a flux_n in_o this_o change_a sphere_n of_o action_n and_o passion_n atom_n let_v we_o then_o begin_v with_o consider_v what_o effect_n the_o sun_n which_o be_v a_o constant_a and_o perpetual_a cause_n work_v upon_o inferior_a body_n by_o his_o be_v regular_o sometime_o present_a and_o sometime_o absent_a observe_v in_o a_o pot_n of_o water_n hang_v over_o a_o fire_n how_o the_o heat_n make_v some_o part_n of_o the_o water_n to_o ascend_v and_o other_o to_o supply_v the_o room_n by_o descend_v so_o that_o as_o long_o as_o it_o boil_v it_o be_v in_o a_o perpetual_a confuse_a motion_n up_o and_o down_o now_o have_v forme_o conclude_v that_o fire_n be_v light_a and_o light_n be_v fire_n it_o can_v not_o be_v doubt_v but_o that_o the_o sun_n do_v serve_v instead_o of_o fire_n to_o our_o globe_n of_o earth_n and_o water_n which_o may_v be_v fit_o compare_v to_o the_o boil_a pot_n and_o all_o the_o day_n long_o draw_v vapour_n from_o those_o body_n that_o his_o beam_n strike_v upon_o for_o he_o shoot_v his_o little_a dart_n of_o fire_n in_o multitude_n and_o in_o continue_a stream_n from_o his_o own_o centre_n against_o the_o python_n the_o earth_n we_o live_v on_o they_o do_v there_o overtake_v one_o a_o other_o and_o cause_v some_o degree_n of_o heat_n as_o far_o as_o they_o sink_v in_o but_o not_o be_v able_a by_o reason_n of_o their_o great_a expansion_n in_o their_o long_a journey_n to_o convert_v it_o into_o their_o own_o nature_n and_o set_v it_o on_o fire_n which_o require_v a_o high_a degree_n of_o condensation_n of_o the_o beam_n they_o do_v but_o pierce_v and_o divide_v it_o very_o subtile_o and_o cut_v some_o of_o the_o outward_a part_n of_o it_o into_o extreme_a little_a atom_n unto_o which_o they_o stick_v very_o close_o and_o be_v in_o a_o manner_n incorporate_v with_o they_o by_o reason_n of_o the_o moisture_n that_o be_v in_o they_o they_o do_v in_o their_o rebound_n back_o from_o the_o earth_n carry_v they_o along_o with_o they_o like_o a_o ball_n that_o strike_v against_o a_o moist_a wall_n do_v in_o its_o return_n from_o it_o bring_v back_o some_o of_o the_o mortar_n stick_v upon_o it_o for_o the_o distance_n of_o the_o earth_n from_o the_o sun_n be_v not_o the_o utmost_a period_n of_o these_o nimble_a body_n flight_n so_o that_o when_o by_o this_o solid_a body_n they_o be_v stop_v in_o their_o course_n forwards_o on_o they_o leap_v back_o from_o it_o and_o carry_v some_o little_a part_n of_o it_o with_o they_o some_o of_o they_o a_o far_a some_o of_o they_o a_o short_a journey_n according_a as_o their_o litlenesse_n and_o rarity_n make_v they_o fit_a to_o ascend_v as_o be_v manifest_a by_o the_o consent_n of_o all_o author_n that_o write_v of_o the_o region_n of_o the_o air_n who_o determine_v the_o low_a region_n to_o reach_v as_o far_o as_o the_o reflection_n of_o the_o sun_n and_o conclude_v this_o region_n to_o be_v very_o hot_a for_o if_o we_o mark_v how_o the_o heat_n of_o fire_n be_v great_a when_o it_o be_v incorporate_v in_o some_o dense_a body_n as_o in_o iron_n or_o in_o seacoal_n we_o shall_v easy_o conceive_v that_o the_o heat_n of_o this_o region_n proceed_v main_o out_o of_o the_o incorporation_n of_o light_n with_o those_o little_a body_n which_o stick_v to_o it_o in_o its_o reflection_n and_o experience_n testify_v the_o same_o both_o in_o our_o sultry_a day_n which_o we_o see_v be_v of_o a_o gross_a temper_n and_o ordinary_o go_v before_o rain_n as_o also_o in_o the_o hot_a springe_n of_o extreme_a cold_a country_n where_o the_o first_o heat_n be_v unsufferable_a which_o proceed_v out_o of_o the_o resolution_n of_o humidity_n congeal_v and_o in_o hot_a wind_n which_o the_o spaniard_n call_v bochornos_n from_o boca_fw-la de_fw-la horno_fw-la by_o allusion_n to_o the_o breathe_a steam_n of_o a_o oven_n when_o it_o be_v open_v which_o do_v manifest_o show_v that_o the_o heat_n of_o the_o sun_n be_v incorporate_v in_o the_o little_a body_n which_o compose_v the_o steam_n of_o that_o wind_n and_o by_o the_o principle_n we_o have_v already_o lay_v the_o same_o will_v be_v evident_a though_o we_o have_v no_o experience_n to_o instruct_v we_o for_o see_v that_o the_o body_n of_o fire_n be_v dry_a the_o wet_a part_n which_o be_v easily_a resolve_v by_o fire_n must_v needs_o stick_v unto_o they_o line_n and_o accompany_v they_o in_o their_o return_n from_o the_o earth_n now_o while_o these_o ascend_v the_o air_n must_v needs_o cause_v other_o that_o be_v of_o a_o grosser_n complexion_n to_o descend_v as_o fast_o to_o make_v room_n for_o the_o former_a and_o to_o fill_v the_o place_n they_o leave_v that_o there_o may_v be_v no_o vacuity_n in_o nature_n and_o to_o find_v what_o part_n they_o be_v and_o from_o whence_o they_o come_v that_o succeed_v in_o the_o room_n of_o light_n and_o atom_n glue_v together_o that_o thus_o ascend_v we_o may_v take_v a_o hint_n from_o the_o maxim_n of_o the_o optike_n that_o light_n reflect_v make_v equal_a angle_n whence_o suppose_v the_o superficies_n of_o the_o earth_n to_o be_v circular_a it_o will_v follow_v that_o a_o perpendicular_a to_o the_o centre_n pass_v just_a in_o the_o middle_n between_o the_o two_o ray_n the_o incident_a and_o the_o reflect_v wherefore_o the_o air_n between_o these_o two_o ray_n and_o such_o dody_n as_o be_v in_o it_o be_v equal_o press_v on_o both_o side_n those_o body_n which_o be_v just_a in_o the_o middle_n be_v near_o and_o likely_a to_o succeed_v immediate_o in_o the_o room_n of_o the_o light_n and_o atom_n which_o ascend_v from_o the_o superficies_n of_o the_o earth_n and_o their_o motion_n to_o that_o point_n be_v upon_o the_o perpendicular_a hence_o it_o be_v evident_a that_o the_o air_n and_o all_o such_o body_n as_o descend_v to_o supply_v the_o place_n of_o light_n and_o atom_n which_o ascend_v from_o the_o earth_n do_v descend_v perpendicular_o towards_o the_o centre_n of_o the_o earth_n and_o again_o such_o body_n as_o by_o the_o force_n of_o light_n be_v cut_n from_o the_o earth_n or_o water_n do_v not_o ascend_v in_o form_n of_o light_n but_o do_v incorporate_v a_o hide_a light_n and_o heat_n within_o they_o and_o thereby_o be_v rare_a than_o these_o descend_a body_n must_v of_o necessity_n be_v lift_v up_o by_o the_o descent_n of_o those_o denser_n body_n that_o go_v downwards_o because_o they_o by_o reason_n of_o their_o density_n be_v move_v with_o a_o great_a force_n and_o this_o lift_n up_o must_v be_v in_o a_o perpendicular_a line_n because_o the_o other_o descend_v on_o all_o side_n perpendicular_o must_v needs_o raise_v those_o that_o be_v between_o they_o equal_o from_o all_o side_n that_o be_v perpendicular_o from_o the_o centre_n of_o the_o earth_n and_o thus_o we_o see_v a_o motion_n set_v on_o foot_n of_o some_o body_n continual_o descend_v and_o other_o continual_o ascend_v all_o in_o perpendicular_a line_n except_v those_o which_o follow_v the_o course_n of_o light_n reflection_n again_o as_o soon_o as_o the_o decline_a sun_n grow_v weak_a or_o leave_v our_o horizon_n and_o that_o his_o beam_n vanish_v do_v leave_v the_o little_a horseman_n which_o ride_v upon_o they_o to_o their_o own_o temper_n and_o nature_n from_o whence_o they_o force_v they_o they_o find_v themselves_o surround_v by_o a_o smart_n descend_v stream_n do_v tumble_v down_o again_o in_o the_o night_n as_o fast_o as_o in_o the_o day_n they_o be_v carry_v up_o and_o crowd_v into_o their_o former_a habitation_n they_o exclude_v those_o that_o they_o find_v have_v usurp_v they_o in_o their_o absence_n and_o thus_o all_o body_n within_o reach_n of_o the_o sun_n power_n but_o especial_o our_o air_n be_v in_o perpetual_a motion_n the_o more_o rarify_v one_o ascend_v and_o the_o dense_a one_o descend_v descend_v now_o they_o because_o no_o body_n wheresoever_o they_o be_v as_o we_o have_v already_o show_v have_v any_o inclination_n to_o move_v towards_o a_o particular_a place_n otherwise_o they_o as_o they_o be_v
of_o physics_n have_v demonstrate_v that_o there_o can_v be_v no_o motion_n in_o vacuity_n it_o be_v true_a they_o endeavour_v to_o evade_v his_o demonstration_n as_o not_o reach_v home_o to_o their_o supposition_n by_o acknowledge_v it_o to_o be_v a_o evident_a one_o in_o such_o a_o vacuity_n as_o he_o there_o speak_v of_o which_o he_o suppose_v to_o be_v so_o great_a a_o one_o that_o a_o body_n may_v swim_v in_o it_o as_o in_o a_o ocean_n and_o not_o touch_v or_o be_v near_o any_o other_o body_n whereas_o this_o opinion_n exclude_v all_o such_o vast_a inanity_n and_o admit_v no_o vacuity_n but_o so_o little_a one_o as_o no_o body_n whatsoever_o can_v come_v unto_o but_o will_v be_v big_a than_o they_o and_o consequent_o must_v on_o some_o side_n or_o other_o touch_v the_o corporeal_a part_n which_o those_o vacuity_n divide_v for_o they_o be_v the_o separation_n of_o the_o least_o part_n that_o be_v or_o can_v be_v actual_o divide_v from_o one_o a_o other_o which_o part_n must_v of_o necessity_n touch_v one_o a_o other_o on_o some_o side_n or_o else_o they_o can_v not_o hang_v together_o to_o compose_v one_o substance_n and_o therefore_o the_o divide_v vacuity_n must_v be_v less_o than_o the_o divide_a part_n and_o thus_o no_o body_n will_v ever_o be_v in_o danger_n of_o float_v up_o and_o down_o without_o touch_v any_o thing_n which_o be_v the_o difficulty_n that_o aristotle_n chief_o impugn_v refute_v i_o confess_v i_o shall_v be_v very_o glad_a that_o this_o supposition_n may_v serve_v our_o turn_n and_o save_v the_o phoenomena_fw-la that_o appear_v among_o body_n through_o their_o variety_n of_o rarity_n and_o density_n which_o if_o it_o may_v be_v then_o will_v i_o straight_o go_v on_o to_o the_o inquire_v after_o what_o follow_v out_o of_o this_o ground_n as_o astronomer_n to_o use_v our_o former_a similitude_n do_v calculate_v the_o future_a appearance_n of_o the_o celestial_a body_n out_o of_o those_o motion_n and_o orb_n they_o assign_v unto_o the_o heaven_n for_o as_o this_o apprehension_n of_o vacuity_n in_o body_n be_v very_o easy_a and_o intelligibile_fw-la so_o the_o other_o which_o i_o conceive_v to_o be_v the_o truth_n of_o the_o case_n be_v exceed_o abstract_v and_o one_o of_o the_o most_o difficult_a point_n in_o all_o the_o metaphysic_n and_o therefore_o i_o will_v if_o it_o be_v possible_a avoid_v touch_v upon_o it_o in_o this_o discourse_n which_o i_o desire_v shall_v be_v as_o plain_a and_o easy_a and_o as_o much_o remove_v from_o scholastic_a term_n as_o may_v be_v but_o indeed_o the_o inconvenience_n that_o follow_v out_o of_o this_o supposition_n of_o vacuity_n be_v so_o great_a as_o it_o be_v impossible_a by_o any_o mean_n to_o slide_v they_o over_o 81._o as_o for_o example_n let_v we_o borrow_v of_o galilaeus_fw-la the_o proportion_n of_o weight_n between_o water_n and_o air_n he_o show_v we_o how_o the_o one_o be_v 400_o time_n heavy_a than_o the_o other_o and_o marinus_n ghetaldus_n teach_v we_o that_o gold_n be_v 19_o time_n heavy_a than_o water_n so_o that_o gold_n must_v be_v 7600_o time_n heavy_a than_o air_n promote_v now_o then_o consider_v that_o nothing_o in_o a_o body_n can_v weigh_v but_o the_o solid_a part_n of_o it_o it_o follow_v that_o the_o proportion_n of_o the_o part_n of_o gold_n in_o a_o sphere_n of_o a_o inch_n diameter_n be_v to_o the_o part_n of_o air_n of_o a_o like_a dimension_n as_o 7600_o be_v to_o one_o therefore_o in_o air_n itself_o the_o vacuity_n that_o be_v suppose_v in_o it_o will_v be_v to_o the_o solid_a part_n of_o it_o in_o the_o same_o proportion_n as_o 7600_o to_o one_o indeed_o the_o proportion_n of_o difference_n will_v be_v great_a for_o even_o in_o gold_n many_o vacuity_n must_v be_v admit_v as_o appear_v by_o the_o heat_n of_o it_o which_o show_v that_o in_o every_o the_o least_o part_n it_o be_v exceed_o porous_a but_o according_a to_o this_o rate_n without_o press_v the_o inconvenience_n any_o further_o the_o air_n will_v by_o this_o reckon_n appear_v to_o be_v like_o a_o net_n who_o hole_n and_o distance_n be_v to_o the_o line_n and_o thridde_n in_o the_o proportion_n of_o 7600_o to_o one_o and_o so_o will_v be_v liable_a to_o have_v little_a part_n of_o its_o body_n swim_v in_o those_o great_a vacuity_n contrary_a to_o what_o they_o strive_v to_o avoid_v which_o will_v be_v exceed_o more_a if_o we_o find_v on_o the_o one_o side_n any_o body_n heavy_a and_o denser_n than_o gold_n and_o that_o be_v so_o solid_a as_o to_o exclude_v all_o vacuity_n and_o on_o the_o other_o side_n shall_v balance_v they_o with_o such_o body_n as_o be_v light_a and_o rare_a than_o air_n as_o fire_n be_v and_o as_o some_o will_v have_v the_o aether_n to_o be_v but_o already_o the_o disproportion_n be_v so_o great_a and_o the_o vacuity_n so_o strange_o exceed_v the_o body_n in_o which_o it_o be_v as_o be_v too_o great_a a_o absurdity_n to_o be_v admit_v and_o beside_o it_o will_v destroy_v all_o motion_n of_o small_a body_n in_o the_o air_n if_o it_o be_v true_a as_o aristotle_n have_v demonstrate_v in_o the_o 4_o book_n of_o his_o physics_n that_o motion_n can_v not_o be_v make_v but_o among_o body_n and_o not_o in_o vacuo_fw-la again_o if_o rarity_n be_v make_v by_o vacuity_n rare_a body_n can_v not_o be_v gather_v together_o without_o lose_v their_o rarity_n and_o become_a dense_n the_o contrary_a of_o which_o we_o learn_v by_o constant_a experience_n as_o when_o the_o smith_n and_o glassemender_n drive_v their_o white_a and_o fury_n fire_n as_o they_o term_v they_o when_o air_n pierce_v most_o in_o the_o sharp_a wind_n and_o general_o we_o see_v that_o more_o of_o the_o same_o kind_n of_o rare_a body_n in_o less_o place_n work_v most_o efficacious_o according_a to_o the_o nature_n that_o result_v out_o of_o that_o degree_n of_o rarity_n which_o argue_v that_o every_o little_a part_n be_v as_o rare_a as_o it_o be_v before_o for_o else_o it_o will_v loose_v the_o virtue_n of_o work_v according_a to_o that_o nature_n but_o that_o by_o their_o be_v crowd_v together_o they_o exclude_v all_o other_o body_n that_o before_o do_v mediate_v between_o the_o little_a part_n of_o their_o main_a body_n and_o so_o more_o part_n be_v get_v together_o in_o the_o same_o place_n then_o former_o there_o be_v they_o work_v more_o forcible_o three_o if_o such_o vacuity_n be_v the_o cause_n of_o rarity_n it_o will_v follow_v that_o fluid_n body_n be_v rare_a than_o solid_a one_o they_o will_v be_v of_o themselves_o stand_v like_a net_n or_o cobbewebbe_n whereas_o contrariwise_o we_o see_v their_o nature_n be_v to_o run_v together_o and_o to_o fill_v up_o every_o little_a creek_n and_o corner_n which_o effect_n follow_v out_o of_o the_o very_a nature_n of_o the_o thing_n themselves_o must_v needs_o exclude_v vacuity_n out_o of_o that_o nature_n and_o last_o if_o it_o be_v true_a as_o we_o have_v show_v in_o the_o last_o chapter_n that_o there_o be_v no_o actual_a part_n in_o quantity_n it_o follow_v of_o necessity_n that_o all_o quantity_n must_v of_o it_o selâ—e_v be_v one_o as_o metaphysic_n teach_v we_o and_o then_o no_o distance_n can_v be_v admit_v between_o one_o quantity_n and_o a_o other_o and_o true_o if_o i_o understand_v aristotle_n right_a he_o have_v perfect_o demonstrate_v that_o no_o vacuity_n be_v possible_a in_o nature_n neither_o great_a nor_o little_a and_o consequent_o the_o whole_a machine_n raise_v upon_o that_o supposition_n must_v be_v ruinous_a his_o argument_n be_v to_o this_o purpose_n what_o be_v nothing_o can_v not_o have_v part_n but_o vacuum_n be_v nothing_o because_o as_o the_o adversary_n conceive_v it_o vacuum_n be_v the_o want_n of_o a_o corporeal_a substance_n in_o a_o enclose_v body_n within_o who_o side_n nothing_o be_v whereas_o a_o certain_a body_n may_v be_v contain_v whithin_v they_o as_o if_o in_o a_o pail_n or_o bowl_n of_o a_o gallon_n there_o be_v neither_o milk_n nor_o water_n nor_o air_n nor_o any_o other_o body_n whatsoever_o therefore_o vacuum_n can_v not_o have_v part_n yet_o those_o who_o admit_v it_o do_v put_v it_o express_o for_o a_o space_n which_o do_v essential_o include_v part_n and_o thus_o they_o put_v two_o contradictory_n nothing_o but_o part_n that_o be_v part_n and_o no_o part_n or_o something_o and_o nothing_o in_o the_o same_o proposition_n and_o this_o i_o conceive_v to_o be_v absolute_o unavoidable_a substance_n for_o these_o reason_n therefore_o i_o must_v entreat_v my_o reader_n favour_n that_o he_o will_v allow_v i_o to_o touch_v upon_o metaphysic_n a_o little_a more_o than_o i_o desire_v or_o intend_a but_o it_o shall_v be_v no_o otherwise_o then_o as_o be_v say_v of_o the_o dog_n by_o the_o river_n nilus_n side_n who_o be_v thirsty_a lap_n hasty_o of_o the_o water_n only_o to_o serve_v
elemenr_n we_o assign_v to_o heat_n but_o if_o it_o have_v no_o pore_n it_o will_v be_v either_o rare_a or_o dense_a if_o it_o be_v rare_a then_o in_o case_n that_o the_o force_n of_o the_o impellent_fw-fr be_v great_a than_o the_o resistance_n of_o the_o rare_a body_n it_o will_v force_v the_o fire_n to_o divide_v the_o rare_a body_n but_o if_o it_o be_v dense_a as_o some_o atom_n of_o earth_n then_o though_o at_o the_o first_o it_o can_v not_o divide_v it_o yet_o by_o length_n of_o time_n and_o by_o continual_a beat_n upon_o it_o it_o may_v come_v to_o wear_v off_o some_o part_n of_o it_o the_o force_n of_o the_o impellent_fw-fr by_o little_a and_o little_o bend_v the_o atom_n of_o the_o earth_n by_o drive_v a_o continual_a stream_n of_o a_o lesser_a part_n of_o fire_n against_o some_o determinate_a part_n of_o the_o atom_n by_o which_o word_n atom_n no_o body_n will_v imagine_v we_o intend_v to_o express_v a_o perfect_a indivisible_a but_o only_o the_o least_o sort_n of_o natural_a body_n the_o six_o chapter_n of_o light_n what_o it_o be_v have_v say_v thus_o much_o of_o fire_n quality_n the_o near_a relation_n that_o be_v between_o it_o and_o light_n invit_v we_o in_o the_o next_o place_n to_o bend_v our_o eye_n to_o that_o which_o use_v to_o dazzle_v they_o who_o look_v unwary_o upon_o it_o certain_o as_o among_o all_o the_o sensible_a quality_n it_o be_v the_o principal_a so_o among_o all_o corporeal_a thing_n it_o seem_v to_o aim_v right_a at_o a_o spiritual_a nature_n and_o to_o come_v near_o unto_o it_o and_o by_o some_o have_v be_v judge_v to_o be_v spiritual_a if_o our_o eye_n be_v capable_a to_o see_v spirit_n no_o mean_a man_n than_o aristotle_n lead_v the_o dance_n to_o hold_v light_a a_o quality_n and_o main_o to_o deny_v it_o any_o bodily_a subsistence_n and_o there_o have_v follow_v he_o no_o few_o than_o almost_o all_o the_o world_n ever_o since_o and_o the_o question_n import_v no_o less_o than_o the_o whole_a doctrine_n of_o quality_n for_o admit_v light_a to_o be_v a_o body_n and_o hardly_o any_o man_n will_v hold_v up_o his_o hand_n in_o defence_n of_o any_o other_o quality_n but_o if_o it_o be_v a_o quality_n then_o all_o other_o come_v in_o by_o parity_n and_o for_o company_n but_o before_o we_o go_v any_o further_a it_o will_v not_o be_v amiss_o to_o express_v what_o we_o mean_v when_o we_o reject_v quality_n and_o how_o in_o some_o sense_n we_o be_v content_a to_o admit_v they_o according_a to_o that_o description_n that_o philosopher_n ordinary_o do_v make_v of_o they_o and_o especial_o the_o modern_a we_o can_v by_o no_o mean_n give_v way_n unto_o they_o i_o confess_v ingenuous_o i_o understand_v not_o what_o they_o mean_v by_o they_o and_o i_o be_o confident_a that_o neither_o do_v they_o for_o the_o very_a notion_n that_o their_o first_o word_n seem_v to_o express_v of_o they_o they_o contradict_v again_o before_o they_o make_v a_o end_n of_o describe_v what_o they_o be_v they_o will_v have_v they_o to_o be_v real_a entity_n or_o thing_n distinct_a from_o the_o body_n they_o accompany_v and_o yet_o they_o deny_v they_o a_o subsistence_n or_o self_n be_v say_v they_o do_v but_o inhere_o in_o their_o subject_n which_o support_v they_o or_o which_o be_v all_o one_o that_o their_o be_v be_v a_o dependence_n of_o a_o subject_n if_o they_o will_v reflect_v upon_o what_o they_o say_v and_o make_v their_o thought_n and_o their_o word_n agree_v they_o will_v find_v that_o the_o first_o part_n of_o their_o description_n make_v they_o complete_a substance_n which_o afterwards_o in_o word_n they_o flatte_o deny_v and_o it_o be_v impossible_a to_o reconcile_v these_o two_o meaning_n a_o real_a entity_n or_o thing_n must_v necessary_o have_v a_o existence_n or_o be_v of_o its_o own_o which_o they_o allow_v they_o and_o whatsoever_o have_v so_o become_v a_o substance_n for_o it_o subsist_v by_o its_o own_o existence_n or_o to_o say_v plain_o be_v what_o it_o be_v by_o its_o own_o be_v and_o need_v not_o the_o existence_n of_o a_o other_o thing_n to_o give_v it_o a_o be_v and_o then_o present_o to_o say_v that_o it_o do_v not_o subsist_v of_o itself_o or_o that_o it_o require_v the_o subsistence_n of_o a_o substance_n to_o make_v it_o be_v be_v a_o pure_a contradiction_n to_o the_o former_a this_o arise_v from_o a_o wrong_a notion_n they_o make_v to_o themselves_o of_o substance_n existence_n and_o subsistence_n and_o from_o their_o not_o consult_v sufficient_o with_o their_o own_o thought_n as_o well_o as_o study_v in_o book_n they_o meet_v there_o with_o different_a term_n by_o help_n of_o which_o they_o keep_v themselves_o from_o contradiction_n in_o word_n but_o not_o in_o effect_n if_o the_o term_n be_v right_o conceive_v and_o notion_n due_o fit_v to_o they_o which_o require_v deep_a meditation_n upon_o the_o thing_n themselves_o and_o a_o brain_n free_a from_o all_o inclination_n to_o side_v or_o affection_n to_o opinion_n for_o the_o author_n sake_n before_o they_o be_v well_o understand_v and_o examine_v many_o of_o those_o dispute_n will_v fall_v to_o the_o ground_n in_o which_o oftentimes_o both_o side_n loose_v themselves_o and_o the_o question_n before_o they_o come_v to_o a_o end_n they_o be_v in_o the_o dark_a before_o they_o be_v aware_a and_o then_o they_o make_v a_o noise_n only_o with_o term_n which_o like_o too_o heavy_a weapon_n that_o they_o can_v not_o wield_v do_v carry_v their_o stroke_n beyond_o their_o aim_n of_o such_o nature_n be_v the_o quality_n and_o mood_n that_o some_o modern_a philosopher_n have_v so_o subtilise_v upon_o and_o in_o that_o sense_n we_o utter_o deny_v they_o which_o be_v a_o question_n appertain_v to_o metaphysic_n it_o belong_v not_o to_o our_o present_a purpose_n to_o engage_v ourselves_o further_o in_o it_o quality_n but_o as_o they_o be_v ordinary_o understand_v in_o common_a conversation_n we_o allow_v they_o and_o our_o work_n be_v but_o to_o explicate_v and_o show_v the_o particular_n in_o retail_v of_o what_o man_n natural_o speak_v in_o gross_a for_o that_o serve_v their_o turn_n to_o know_v what_o one_o a_o other_o mean_v whereas_o it_o belong_v only_o unto_o a_o philosopher_n to_o examine_v the_o cause_n of_o thing_n other_o be_v content_a with_o the_o effect_n and_o they_o speak_v true_o and_o proper_o when_o they_o design_v they_o as_o for_o example_n when_o they_o say_v that_o fire_n burn_v by_o a_o quality_n of_o heat_n that_o it_o have_v or_o that_o a_o dye_n be_v square_a by_o the_o quality_n of_o a_o cubicall_a figure_n that_o be_v in_o it_o they_o speak_v as_o they_o shall_v do_v but_o if_o other_o will_v take_v occasion_n upon_o this_o to_o let_v their_o understanding_n give_v a_o be_v unto_o these_o quality_n distinct_a from_o the_o substance_n in_o which_o they_o conceive_v they_o there_o they_o miss_v if_o we_o consider_v the_o same_o man_n hungry_a or_o thirsty_a or_o weary_a or_o sleepy_a or_o stand_v or_o sit_v the_o understanding_n present_o make_v within_o itself_o real_a thing_n of_o sleep_n hunger_n thirst_n weariness_n stand_v and_o sit_v whereas_o indeed_o they_o be_v but_o different_a affection_n or_o situation_n of_o the_o same_o body_n and_o therefore_o we_o must_v beware_v of_o apply_v these_o notion_n of_o our_o mind_n to_o the_o thing_n as_o they_o be_v in_o themselves_o as_o much_o as_o we_o must_v of_o conceive_v those_o part_n to_o be_v actual_o in_o a_o continue_a quantity_n whereof_o we_o can_v frame_v actual_o distinct_a notion_n in_o our_o understanding_n but_o as_o when_o ordinary_a man_n say_v that_o a_o yard_n contain_v three_o foot_n it_o be_v true_a in_o this_o sense_n that_o three_o foot_n may_v be_v make_v of_o it_o but_o that_o while_o it_o be_v a_o yard_n it_o be_v but_o one_o quantity_n or_o thing_n and_o not_o three_o thing_n so_o they_o who_o make_v profession_n to_o examine_v rigorous_o the_o meaning_n of_o word_n must_v explicate_v in_o what_o sense_n it_o be_v true_a that_o heat_n and_o figure_n our_o former_a example_n be_v quality_n for_o such_o we_o grant_v they_o to_o be_v and_o in_o no_o wise_a do_v contradict_v the_o common_a manner_n of_o speech_n which_o enter_v not_o into_o the_o philosophical_a nature_n of_o they_o we_o say_v then_o that_o quality_n be_v nothing_o else_o but_o the_o propriety_n or_o particularity_n wherein_o one_o thing_n differ_v from_o a_o other_o and_o therefore_o logician_n call_v substantial_a difference_n substantial_a quality_n and_o say_v they_o be_v praedicat_v in_o quale_n quid_fw-la but_o the_o predicament_n of_o quality_n be_v order_v by_o aristotle_n to_o conclude_v in_o it_o those_o difference_n of_o thing_n which_o be_v neither_o substantial_a nor_o quantitative_a and_o yet_o be_v intrinsical_v and_o absolute_a and_o so_o that_o which_o the_o understanding_n
call_v heat_n and_o make_v a_o notion_n of_o distinct_a from_o the_o notion_n of_o the_o fire_n from_o whence_o it_o issue_v to_o burn_v the_o wood_n that_o be_v near_o it_o be_v nothing_o else_o in_o the_o fire_n but_o the_o very_a substance_n of_o it_o in_o such_o a_o degree_n of_o rarity_n or_o a_o continual_a stream_n of_o part_n issue_v out_o of_o the_o main_a stock_n of_o the_o same_o fire_n that_o enter_v into_o the_o wood_n and_o by_o the_o rarity_n of_o it_o make_v its_o way_n through_o every_o little_a part_n and_o divide_v they_o all_o which_o action_n be_v comprise_v by_o the_o understanding_n under_o one_o notion_n of_o burn_a and_o the_o power_n which_o be_v fire_n itself_o to_o do_v these_o action_n under_o one_o notion_n of_o the_o quality_n of_o heat_n though_o burn_v in_o effect_n and_o explicate_v philosophical_o be_v nothing_o else_o but_o the_o continuance_n of_o those_o material_a motion_n we_o have_v even_o now_o describe_v in_o like_a manner_n the_o cubicall_a figure_n of_o a_o dye_n be_v nothing_o else_o but_o the_o very_a body_n of_o the_o dye_n itself_o limit_v by_o other_o body_n from_o be_v extend_v beyond_o those_o dimension_n it_o have_v and_o so_o the_o quality_n of_o figure_n or_o squarenesse_n which_o in_o common_a speech_n be_v say_v to_o be_v in_o it_o be_v true_o the_o substance_n itself_o under_o such_o a_o consideration_n as_o be_v express_v by_o that_o word_n but_o to_o come_v to_o our_o question_n body_n upon_o the_o decision_n of_o which_o depend_v the_o fate_n of_o all_o the_o fictitious_a entity_n which_o in_o the_o school_n be_v term_v quality_n the_o chief_a motive_n that_o persuade_v light_a to_o be_v one_o of_o those_o may_v to_o my_o best_a remembrance_n be_v reduce_v to_o five_o several_a head_n the_o first_o be_v that_o it_o illuminate_v the_o air_n in_o a_o instant_n and_o therefore_o can_v not_o be_v a_o body_n for_o a_o body_n requir_v succession_n of_o time_n to_o move_v in_o whereas_o this_o seem_v to_o spread_v itself_o over_o the_o whole_a hemisphere_n in_o a_o instant_n for_o as_o far_o as_o the_o sun_n be_v distant_a from_o we_o he_o no_o soon_o raise_v his_o head_n above_o our_o horizon_n but_o his_o dart_n be_v in_o our_o face_n and_o general_o no_o imagination_n can_v be_v frame_v of_o any_o motion_n it_o have_v in_o its_o dilatation_n the_o next_o be_v that_o whereas_o no_o body_n can_v admit_v a_o other_o into_o its_o place_n without_o be_v remove_v away_o itself_o to_o leave_v that_o room_n unto_o the_o advenient_a one_o nevertheless_o plain_a experience_n show_v we_o daily_o that_o two_o light_n may_v be_v in_o the_o same_o place_n and_o the_o first_o be_v so_o far_o from_o go_v away_o at_o the_o come_n of_o the_o second_o that_o the_o bring_n in_o of_o a_o second_o candle_n and_o set_v it_o near_o the_o first_o increase_v the_o light_n in_o the_o room_n which_o diminish_v again_o when_o the_o second_o be_v remove_v away_o and_o by_o the_o same_o reason_n if_o light_n be_v a_o body_n it_o shall_v drive_v away_o the_o air_n which_o be_v likewise_o a_o body_n wheresoever_o it_o be_v admit_v for_o within_o the_o whole_a sphere_n of_o the_o irradiation_n of_o it_o there_o be_v no_o point_n wherein_o one_o may_v set_v their_o eye_n but_o light_n be_v find_v and_o therefore_o if_o it_o be_v a_o body_n there_o will_v be_v no_o room_n for_o air_n in_o that_o place_n which_o light_n take_v up_o and_o likewise_o we_o see_v that_o it_o penetrate_v all_o solid_a body_n and_o particular_o glass_n as_o experience_n show_v in_o wood_n stone_n metal_n and_o any_o other_o body_n whatsoever_o if_o it_o be_v make_v thin_a enough_o the_o three_o argument_n why_o light_n can_v not_o be_v a_o body_n be_v that_o if_o it_o be_v so_o it_o can_v be_v none_o other_o but_o fire_n which_o be_v the_o subtle_a and_o most_o rarify_v of_o all_o body_n whatsoever_o but_o if_o it_o be_v fire_n than_o it_o can_v not_o be_v without_o heat_n and_o consequent_o a_o man_n can_v not_o feel_v cold_a in_o a_o sunne-shining_a day_n the_o contrary_a of_o which_o be_v apparent_a all_o winter_n long_o who_o brigh_a day_n oftentimes_o prove_v the_o cold_a and_o galilaeus_fw-la with_o diverse_a other_o since_o do_v use_v from_o the_o sun_n to_o gather_v light_n in_o a_o kind_n of_o stone_n that_o be_v find_v in_o italy_n which_o be_v therefore_o by_o they_o call_v la_fw-fr calamita_fw-la della_fw-it luce_fw-fr and_o yet_o no_o heat_n appear_v in_o it_o a_o glow_n worm_n will_v give_v light_a to_o read_v by_o but_o not_o to_o warm_v you_o any_o whitt_n at_o all_o and_o it_o be_v say_v that_o diamond_n and_o carbuncle_n will_v shine_v like_o fire_n in_o the_o great_a dark_n yet_o no_o man_n ever_o complain_v of_o be_v serve_v by_o they_o as_o the_o foolish_a satire_n be_v by_o kiss_v of_o a_o burn_a coal_n on_o the_o contrary_a side_n if_o one_o consider_v how_o great_a heat_n may_v be_v make_v without_o any_o light_n at_o all_o how_o can_v one_o be_v persuade_v that_o light_n and_o heat_n shall_v be_v the_o same_o thing_n or_o indeed_o any_o whitt_n of_o kin_n the_o four_o motive_n to_o induce_v we_o to_o believe_v that_o light_n can_v not_o be_v a_o body_n be_v the_o sudden_a extinction_n of_o it_o when_o any_o solid_a body_n come_v between_o the_o fountain_n of_o it_o and_o the_o place_n where_o he_o send_v his_o beam_n what_o become_v of_o that_o great_a expansion_n of_o light_n that_o shine_v all_o about_o when_o a_o cloud_n interpose_v itself_o between_o the_o body_n of_o the_o sun_n and_o the_o stream_n that_o come_v from_o it_o or_o when_o it_o leave_v our_o horizon_n to_o light_v the_o other_o world_n his_o head_n be_v no_o soon_o out_o of_o our_o sight_n but_o at_o the_o instant_a all_o his_o beam_n be_v vanish_v if_o that_o which_o fill_v so_o vast_a a_o room_n be_v a_o body_n some_o thing_n will_v become_v of_o it_o it_o will_v at_o least_o be_v change_v to_o some_o other_o substance_n and_o some_o relic_n will_v be_v leave_v of_o it_o as_o when_o ash_n remain_v of_o burn_a body_n for_o nature_n admit_v not_o the_o annihilation_n of_o any_o thing_n and_o in_o the_o last_o place_n we_o may_v conceive_v that_o if_o light_n be_v a_o body_n it_o will_v be_v shake_v by_o the_o wind_n and_o by_o the_o motion_n of_o the_o air_n and_o we_o shall_v see_v it_o quaver_v in_o all_o bluster_a weather_n therefore_o sum_v up_o all_o we_o have_v say_v it_o seem_v most_o improbable_a and_o indeed_o whole_o impossible_a that_o light_n shall_v be_v a_o body_n and_o consequent_o must_v have_v his_o place_n among_o quality_n itself_o but_o on_o the_o other_o side_n before_o we_o apply_v ourselves_o to_o answer_v these_o objection_n let_v we_o take_v a_o short_a survey_n of_o those_o inducement_n that_o prevail_v with_o we_o to_o believe_v light_a a_o body_n notwithstanding_o so_o forcible_a opposition_n i_o admit_v so_o far_o of_o the_o three_o argument_n as_o to_o allow_v light_a to_o be_v fire_n for_o indeed_o it_o can_v not_o be_v imagine_v to_o be_v anything_o else_o all_o property_n agree_v so_o full_o between_o they_o but_o withal_o i_o must_v add_v that_o it_o be_v not_o fire_n in_o every_o form_n or_o fire_n join_v with_o every_o substance_n that_o express_v itself_o by_o light_n but_o it_o be_v fire_n extreme_o dilate_v and_o without_o mixture_n of_o any_o other_o gross_a body_n let_v i_o hold_v a_o piece_n of_o linen_n or_o paper_n close_o by_o the_o flame_n of_o a_o candle_n and_o by_o little_a and_o little_o remove_v it_o further_o and_o further_o of_o and_o i_o think_v my_o very_a eye_n tell_v i_o that_o there_o be_v upon_o the_o paper_n some_o part_n of_o that_o which_o i_o see_v in_o the_o candle_n and_o that_o it_o grow_v still_o less_o and_o less_o like_a as_o i_o remove_v the_o paper_n further_o from_o it_o so_o that_o if_o i_o will_v believe_v my_o sense_n i_o shall_v believe_v it_o as_o very_o a_o body_n upon_o the_o paper_n as_o in_o the_o candle_n though_o enfeeble_v by_o the_o laxity_n of_o the_o channel_n in_o which_o it_o flow_v and_o this_o seem_v to_o be_v strengthen_v by_o the_o consideration_n of_o the_o adversary_n position_n for_o if_o it_o be_v a_o quality_n then_o see_v it_o have_v no_o contrary_a to_o destroy_v or_o stop_v it_o it_o shall_v still_o produce_v a_o equal_a to_o itself_o without_o end_n or_o grow_v feeble_a whensoever_o it_o meet_v with_o a_o subject_a capable_a to_o entertain_v it_o as_o air_n be_v the_o better_a to_o apprehend_v how_o much_o this_o faint_a resemblance_n of_o flame_n upon_o the_o paper_n have_v make_v for_o our_o purpose_n let_v we_o turn_v the_o leaf_n and_o imagine_v in_o our_o own_o thought_n after_o what_o fashion_n that_o fire_n
effect_n yet_o dilate_a water_n will_v in_o proportion_n moisten_v more_o then_o dilate_a fire_n will_v burn_v for_o the_o rarefaction_n of_o water_n bring_v it_o near_o to_o the_o nature_n of_o air_n who_o chief_a propriety_n be_v moisture_n and_o the_o fire_n that_o deny_v it_o when_o it_o raise_v it_o into_o steam_n give_v it_o more_o powerful_a ingression_n into_o what_o body_n it_o meet_v withal_o whereas_o fire_n when_o it_o be_v very_o pure_a and_o at_o entire_a liberty_n to_o stretch_v and_o spread_v itself_o as_o wide_a as_o the_o nature_n of_o it_o will_v carry_v it_o get_v no_o advantage_n of_o burn_v by_o its_o mixture_n with_o air_n and_o although_o it_o gain_v force_n by_o its_o purity_n yet_o by_o reason_n of_o its_o extreme_a rarefaction_n it_o must_v needs_o be_v extreme_o faint_a but_o if_o by_o the_o help_n of_o glass_n you_o will_v gather_v into_o less_o room_n that_o which_o be_v diffuse_v into_o a_o great_a one_o and_o so_o condense_a it_o as_o much_o as_o it_o be_v for_o example_n in_o the_o flame_n of_o a_o candle_n then_o that_o fire_n or_o compact_a light_n will_v burn_v much_o more_o forcible_o than_o so_o much_o flame_n for_o there_o be_v as_o much_o of_o it_o in_o quantity_n except_v what_o be_v lose_v in_o the_o carriage_n of_o it_o and_o it_o be_v hold_v in_o together_o in_o as_o little_a room_n and_o it_o have_v this_o advantage_n beside_o that_o it_o be_v clog_v with_o no_o gross_a body_n to_o hinder_v the_o activity_n of_o it_o fire_n it_o seem_v to_o i_o now_o that_o the_o very_o answer_v this_o objection_n do_v beside_o repel_v the_o force_n of_o it_o evident_o prove_v that_o light_n be_v nothing_o but_o fire_n in_o his_o own_o nature_n and_o exceed_o dilate_a for_o if_o you_o suppose_v fire_n for_o example_n the_o flame_n of_o a_o candle_n to_o be_v stretch_v out_o to_o the_o utmost_a expansion_n that_o you_o may_v well_o imagine_v such_o a_o gross_a body_n be_v capable_a of_o it_o be_v impossible_a it_o shall_v appear_v and_o work_v otherwise_o than_o it_o do_v in_o light_a as_o i_o have_v show_v above_o and_o again_o we_o see_v plain_o that_o light_n gather_v together_o burn_v more_o forcible_o than_o any_o other_o fire_n whatsoever_o and_o therefore_o must_v needs_o be_v fire_n why_o then_o shall_v we_o not_o confident_o conclude_v that_o what_o be_v fire_n before_o it_o get_v abroad_o and_o be_v fire_n again_o when_o it_o come_v together_o do_v likewise_o remain_v fire_n during_o all_o its_o journey_n nay_o even_o in_o the_o journey_n itself_o we_o have_v particular_a testimony_n that_o it_o be_v fire_n for_o light_n return_v back_o from_o the_o earth_n charge_v with_o little_a atom_n as_o it_o do_v in_o sultry_a gloomy_a weather_n heat_v much_o more_o than_o before_o just_a as_o fire_n do_v when_o it_o be_v imprison_v in_o a_o dense_a body_n people_n philosopher_n ought_v not_o to_o judge_v by_o the_o same_o rule_n that_o the_o common_a people_n do_v their_o gross_a sense_n be_v all_o their_o guide_n and_o therefore_o they_o can_v not_o apprehend_v any_o thing_n to_o be_v fire_n that_o do_v not_o make_v itself_o be_v know_v for_o such_o by_o burn_v they_o but_o he_o that_o judicious_o examine_v the_o matter_n and_o trace_v the_o pedigree_n and_o period_n of_o it_o and_o see_v the_o reason_n why_o in_o some_o circumstance_n it_o burn_v and_o in_o other_o it_o do_v not_o be_v too_o blame_v if_o he_o suffer_v himself_o to_o be_v lead_v by_o other_o ignorance_n contrary_a to_o his_o own_o reason_n when_o they_o that_o be_v curious_a in_o perfume_n will_v have_v their_o chamber_n fill_v with_o a_o good_a send_v in_o a_o hot_a season_n that_o agree_v not_o with_o burn_a perfume_n and_o therefore_o make_v some_o odoriferous_a water_n be_v blow_v about_o it_o by_o their_o servant_n mouth_n that_o be_v dexterous_a in_o that_o ministry_n as_o be_v use_v in_o spain_n in_o the_o summer_n time_n every_o one_o that_o see_v it_o do_v though_o on_o a_o sudden_a the_o water_n be_v lose_v to_o his_o eye_n and_o touch_n and_o be_v only_o discernible_a by_o his_o nose_n yet_o he_o be_v well_o satisfy_v that_o the_o send_v which_o recreat_v he_o be_v the_o very_a water_n he_o see_v in_o the_o glass_n extreme_o dilate_v by_o the_o forcible_a sprout_v of_o it_o out_o from_o the_o servant_n mouth_n and_o will_v by_o little_a and_o little_o fall_v down_o and_o become_v again_o palpable_a water_n as_o it_o be_v before_o and_o therefore_o doubt_v not_o but_o it_o be_v still_o water_n while_o it_o hang_v in_o the_o air_n divide_v into_o little_a atom_n whereas_o one_o that_o see_v not_o the_o beginning_n of_o this_o operation_n by_o water_n nor_o observe_v how_o in_o the_o end_n it_o show_v itself_o again_o in_o water_n may_v the_o better_o be_v excuse_v if_o he_o shall_v not_o think_v that_o what_o he_o smell_v be_v water_n blow_v about_o the_o air_n nor_o any_o substance_n of_o itself_o because_o he_o neither_o see_v nor_o handle_v it_o but_o some_o adventitious_a quality_n he_o know_v not_o how_o adhere_v to_o the_o air_n the_o like_a difference_n be_v between_o philosopher_n that_o proceed_v orderly_o in_o their_o discourse_n and_o other_o that_o pay_v themselves_o with_o term_n which_o they_o understand_v not_o the_o one_o see_v evidence_n in_o what_o they_o conclude_v while_o the_o other_o guess_v wild_o at_o random_n i_o hope_v the_o reader_n will_v not_o deem_v it_o time_n lose_v from_o our_o main_a drift_n which_o we_o take_v up_o thus_o in_o example_n and_o digression_n substance_n for_o if_o i_o be_v not_o much_o deceive_v they_o serve_v exceed_o to_o illustrate_v the_o matter_n which_o i_o hope_v i_o have_v now_o render_v so_o plain_a as_o no_o man_n that_o shall_v have_v well_o weigh_v it_o will_v expect_v that_o fire_n dilate_v into_o that_o rarify_v substance_n which_o mankind_n who_o according_a to_o the_o different_a appearance_n of_o thing_n to_o their_o sense_n give_v different_a name_n unto_o they_o call_v light_a shall_v burn_v like_o that_o grosser_n substance_n which_o from_o do_v so_o they_o call_v fire_n nor_o doubt_v but_o that_o they_o may_v be_v the_o same_o thing_n more_o or_o less_o attenuate_v as_o leaf_n gold_n that_o fly_v in_o the_o air_n as_o light_v as_o down_o be_v as_o true_o gold_n as_o that_o in_o a_o ingott_n which_o being_n heavy_a than_o any_o other_o substance_n fall_v most_o forcible_o unto_o the_o ground_n what_o we_o have_v say_v of_o the_o unburning_a fire_n which_o we_o call_v light_n stream_v from_o the_o flame_n of_o a_o candle_n may_v easy_o be_v apply_v to_o all_o other_o light_v deprive_v of_o sensible_a heat_n whereof_o some_o appear_v with_o flame_n other_o without_o it_o of_o the_o first_o sort_n of_o which_o be_v the_o innoxious_a flame_n that_o be_v often_o see_v on_o the_o hair_n of_o man_n head_n and_o horse_n mane_n on_o the_o mast_n of_o ship_n over_o grave_n and_o fat_a marish_a ground_n and_o the_o like_a and_o of_o the_o latter_a sort_n be_v glow_v worm_n and_o the_o light_a conserve_n stone_n rot_a wood_n some_o kind_n of_o fish_n and_o of_o flesh_n when_o they_o begin_v to_o putrify_v and_o some_o other_o thing_n of_o the_o like_a nature_n now_o to_o answer_v the_o second_o part_n of_o this_o objection_n that_o we_o daily_o see_v great_a heat_n without_o any_o light_n light_n as_o well_o as_o much_o light_n without_o any_o heat_n and_o therefore_o light_a and_o fire_n can_v not_o be_v the_o same_o thing_n you_o may_v call_v to_o mind_n how_o dense_a body_n be_v capable_a of_o great_a quantity_n of_o rare_a one_o and_o thereby_o it_o come_v to_o pass_v that_o body_n which_o repugn_v to_o the_o dilatation_n of_o flame_n may_v nevertheless_o have_v much_o fire_n enclose_v in_o they_o as_o in_o a_o stove_n let_v the_o fire_n be_v never_o so_o great_a yet_o it_o appear_v not_o outwards_o to_o the_o sight_n although_o that_o stove_n warm_v all_o the_o room_n near_o it_o so_o when_o many_o little_a part_n of_o heat_n be_v imprison_v in_o as_o many_o little_a celles_fw-fr of_o gross_a earthy_a substance_n which_o be_v like_o so_o many_o little_a stove_n to_o they_o that_o imprisonement_n will_v not_o hinder_v they_o from_o be_v very_o hot_a to_o the_o sense_n of_o feeling_n which_o be_v most_o perceptible_a of_o dense_a thing_n but_o because_o they_o be_v choke_v with_o the_o closeness_n of_o the_o gross_a matter_n wherein_o they_o be_v enclose_v they_o can_v not_o break_v out_o into_o a_o body_n of_o flame_n or_o light_n so_o to_o discover_v their_o nature_n which_o as_o we_o have_v say_v before_o be_v the_o most_o unfit_a way_n for_o burn_v for_o we_o see_v that_o light_n must_v be_v condense_v to_o produce_v flame_n and_o fire_n as_o flame_n must_v be_v to_o burn_v violent_o die_v have_v thus_o
ground_n in_o philosophy_n nevertheless_o if_o there_o be_v any_o certain_a experience_n in_o this_o particular_a i_o shall_v think_v that_o there_o may_v be_v some_o art_n by_o circulation_n of_o fuel_n to_o maintain_v the_o same_o light_n for_o a_o great_a company_n of_o year_n but_o i_o shall_v not_o easy_o be_v persuade_v that_o either_o flame_n or_o light_n can_v be_v make_v without_o any_o manner_n of_o consume_v the_o body_n which_o serve_v they_o for_o fuel_n the_o eight_o chapter_n a_o answer_n to_o three_o other_o objection_n former_o propose_v against_o light_n be_v a_o substance_n have_v thus_o defend_v ourselves_o from_o their_o objection_n so_o who_o will_v not_o allow_v light_a to_o be_v fire_n and_o have_v satisfy_v their_o inquisition_n who_o will_v know_v what_o become_v of_o it_o when_o it_o die_v if_o it_o be_v a_o body_n we_o will_v now_o apply_v ourselves_o to_o answer_v their_o difficulty_n who_o will_v not_o let_v it_o pass_v for_o a_o body_n because_o it_o be_v in_o the_o same_o place_n with_o a_o other_o body_n as_o when_o the_o sun_n beam_n enlighten_v all_o the_o air_n and_o when_o the_o several_a light_n of_o two_o distinct_a candle_n be_v both_o of_o they_o every_o where_o in_o the_o same_o room_n which_o be_v the_o substance_n of_o the_o second_o main_a objection_n this_o of_o the_o justle_n of_o the_o air_n be_v easy_o answer_v thus_o that_o the_o air_n be_v a_o very_a divisible_a body_n do_v without_o resistance_n yield_v as_o much_o place_n as_o be_v requisite_a for_o light_n and_o that_o light_n though_o our_o eye_n judge_v it_o diffuse_v every_o where_o yet_o be_v not_o true_o in_o every_o point_n or_o atom_n of_o air_n but_o to_o make_v we_o see_v it_o every_o where_o it_o suffice_v that_o it_o be_v in_o every_o part_n of_o the_o air_n which_o be_v as_o big_a as_o the_o black_a or_o sight_n of_o our_o eye_n so_o that_o we_o can_v not_o set_v our_o eye_n in_o any_o position_n where_o it_o receive_v not_o impression_n of_o light_n in_o the_o same_o manner_n as_o perfume_n which_o though_o they_o be_v so_o gross_a body_n that_o they_o may_v be_v sensible_o waste_v by_o the_o wind_n nevertheless_o they_o do_v so_o fill_v the_o air_n that_o we_o can_v put_v our_o nose_n in_o no_o part_n of_o the_o room_n where_o a_o perfume_n be_v burn_v but_o we_o shall_v smell_v it_o and_o the_o like_a be_v of_o mist_n as_o also_o of_o the_o sprout_v water_n to_o make_v a_o perfume_n which_o we_o mention_v above_o but_o because_o pure_a discourse_n in_o such_o small_a thridde_n as_o these_o do_v but_o weak_o bind_v such_o reader_n as_o be_v not_o accustom_v unto_o they_o and_o that_o i_o woudl_v if_o it_o be_v possible_a render_v this_o treatise_n intelligible_a to_o every_o rational_a man_n how_o ever_o little_o verse_v in_o scholastike_a learning_n among_o who_o i_o expect_v it_o will_v have_v a_o fair_a passage_n then_o among_o those_o that_o be_v already_o deep_o imbue_v with_o other_o principle_n let_v we_o try_v if_o we_o can_v herein_o inform_v ourselves_o by_o our_o sense_n and_o bring_v our_o eye_n for_o witness_v of_o what_o we_o say_v he_o than_o that_o be_v desirous_a to_o satisfy_v himself_o in_o this_o particular_a may_v put_v himself_o in_o a_o dark_a room_n through_o which_o the_o sun_n send_v his_o beam_n by_o a_o cranny_n or_o little_a hole_n in_o the_o wall_n and_o he_o will_v discover_v a_o multitude_n of_o little_a atom_n fly_v about_o in_o that_o little_a stream_n of_o light_n which_o his_o eye_n can_v not_o discern_v when_o he_o be_v environ_v on_o all_o side_n with_o a_o full_a light_n then_o let_v he_o examine_v whether_o or_o no_o there_o be_v light_n in_o the_o midst_n of_o those_o little_a body_n and_o his_o own_o reason_n will_v easy_o tell_v he_o that_o if_o those_o body_n be_v as_o perspicuous_a as_o the_o air_n they_o will_v not_o reflect_v upon_o our_o eye_n the_o beam_n by_o which_o we_o see_v they_o and_o therefore_o he_o will_v bold_o conclude_v that_o at_o the_o least_o such_o part_n of_o they_o as_o reflect_v light_n unto_o we_o do_v not_o admit_v it_o nor_o let_v it_o sink_v into_o they_o then_o let_v he_o consider_v the_o multitude_n of_o they_o and_o the_o little_a distance_n betwixt_o one_o a_o other_o and_o how_o nevertheless_o they_o hinder_v not_o our_o sight_n but_o we_o have_v it_o free_a to_o discover_v all_o object_n beyond_o they_o in_o what_o position_n soever_o we_o place_v our_o eye_n and_o when_o he_o thus_o perceive_v that_o these_o opacous_a body_n which_o be_v every_o where_o do_v not_o hinder_v the_o eye_n from_o judge_a light_n to_o have_v a_o equal_a plenary_a diffusion_n through_o the_o whole_a place_n that_o it_o irradiate_v he_o can_v have_v no_o difficulty_n to_o allow_v air_n that_o be_v diaphanous_a and_o more_o subtle_a far_o than_o they_o and_o consequent_o divisible_a into_o lesser_a atom_n and_o have_v lesser_a pore_n give_v less_o scope_n unto_o our_o eye_n to_o miss_v light_n than_o they_o do_v to_o be_v every_o where_o mingle_v with_o light_n though_o we_o see_v nothing_o but_o light_n and_o can_v not_o discern_v any_o breach_n or_o division_n of_o it_o especial_o when_o he_o shall_v add_v unto_o this_o consideration_n that_o the_o subtle_a body_n which_o thus_o fill_v the_o air_n be_v the_o most_o visible_a thing_n in_o the_o world_n and_o that_o whereby_o all_o other_o thing_n be_v see_v and_o that_o the_o air_n which_o it_o mingle_v itself_o with_o be_v not_o at_o all_o visible_a by_o reason_n of_o the_o extreme_a diaphaneity_n of_o it_o and_o easy_a reception_n of_o the_o light_n into_o every_o poor_a of_o it_o without_o any_o resistance_n or_o reflection_n and_o that_o such_o be_v the_o nature_n of_o light_n as_o it_o easy_o drown_v a_o obscure_a body_n if_o it_o be_v not_o too_o big_a and_o not_o only_o such_o but_o even_o other_o light_a body_n for_o so_o we_o know_v as_o well_o the_o fix_a star_n as_o the_o planet_n be_v conceal_v from_o our_o sight_n by_o nearness_n to_o the_o sun_n neither_o the_o lightness_n of_o the_o one_o nor_o the_o bigness_n of_o the_o other_o prevail_a against_o the_o darken_n of_o a_o exuperant_fw-la light_n and_o we_o have_v daily_a experience_n of_o the_o same_o in_o very_o pure_a crystal_n glass_n and_o in_o very_o clear_a water_n which_o though_o we_o can_v not_o discern_v by_o our_o sight_n if_o they_o be_v in_o certain_a position_n nevertheless_o by_o experience_n we_o find_v that_o they_o reflect_v much_o light_n and_o consequent_o have_v great_a store_n of_o opacous_a part_n and_o then_o he_o can_v not_o choose_v but_o conclude_v that_o it_o be_v impossible_a but_o light_n shall_v appear_v as_o it_o do_v to_o be_v every_o where_o and_o to_o be_v one_o continue_a thing_n though_o his_o discourse_n withal_o assure_v he_o it_o be_v every_o where_o mingle_v with_o air_n other_o and_o this_o very_a answer_n i_o think_v will_v draw_v with_o it_o by_o consequence_n the_o solution_n of_o the_o other_o part_n of_o the_o same_o objection_n which_o be_v of_o many_o light_n join_v in_o the_o same_o place_n and_o the_o same_o be_v likewise_o concern_v the_o image_n of_o colour_n every_o where_o cross_v one_o a_o other_o without_o hindrance_n but_o to_o raise_v this_o contemplation_n a_o strain_n high_o let_v we_o consider_v how_o light_n be_v the_o most_o rare_a of_o all_o know_a body_n be_v of_o its_o own_o nature_n by_o reason_n of_o the_o divisibility_n that_o follow_v rarity_n divisible_a into_o lesser_a part_n then_o any_o other_o and_o particular_o then_o flame_n which_o be_v mix_v with_o smoke_n and_o other_o corpulency_n fall_v very_o short_a of_o light_n and_o this_o to_o the_o proportion_n in_o which_o it_o be_v more_o rare_a than_o the_o body_n it_o be_v compare_v unto_o now_o a_o great_a mathematician_n have_v devise_v how_o to_o measure_v the_o rarefaction_n of_o gunnepowder_n into_o flame_n snell_n find_v the_o diameter_n to_o time_n increase_v and_o so_o conclude_v that_o the_o body_n of_o the_o flame_n be_v in_o proportion_n to_o the_o body_n of_o the_o gunnepowder_n it_o be_v make_v of_o as_o 125000_o be_v to_o one_o wherefore_o by_o the_o immediate_o proceed_v consequence_n we_o find_v that_o 125000_o part_n of_o flame_n may_v be_v couch_v in_o the_o room_n of_o one_o lest_o part_n of_o gunnepowder_n and_o peradventure_o many_o more_o consider_v how_o porous_a a_o body_n gunnepowder_n be_v which_o be_v admit_v it_o be_v evident_a that_o although_o light_n be_v as_o gross_a as_o the_o flame_n of_o gunnepowder_n and_o gunnepowder_n be_v as_o solid_a as_o gold_n yet_o there_o may_v pass_v 125000_o ray_n of_o light_n in_o the_o space_n wherein_o one_o lest_o part_n of_o gunnepowder_n may_v be_v contain_v which_o space_n will_v be_v absolute_o invisible_a unto_o we_o
a_o thrust_n so_o quick_a that_o the_o foil_n will_v be_v in_o your_o bosom_n when_o you_o think_v it_o a_o yard_n off_o because_o in_o the_o same_o moment_n you_o see_v his_o point_n so_o far_o distant_a and_o can_v not_o discern_v it_o to_o move_v towards_o you_o till_o you_o feel_v the_o rude_a salutation_n it_o give_v you_o if_o then_o you_o will_v compare_v the_o body_n of_o light_n with_o these_o other_o that_o thus_o deceive_v we_o in_o regard_n of_o motion_n you_o must_v needs_o agree_v it_o be_v much_o rashness_n to_o conclude_v it_o have_v no_o motion_n because_o we_o can_v not_o discern_v the_o succession_n of_o it_o consider_v that_o it_o be_v the_o subtle_a of_o all_o the_o body_n that_o god_n have_v make_v examine_v the_o path_n of_o it_o which_o for_o the_o smallnesse_n of_o their_o thridde_n and_o the_o extreme_a divisibility_n of_o they_o and_o their_o pliant_a application_n of_o themselves_o to_o whatsoever_o have_v pore_n be_v almost_o without_o resistance_n calculate_v the_o strange_a multiplication_n of_o it_o by_o a_o perpetual_a momentary_a renovation_n of_o its_o stream_n and_o cast_v with_o yourself_o with_o what_o extreme_a force_n it_o spring_v out_o and_o fly_v abroad_o and_o on_o the_o other_o side_n reflect_v how_o all_o these_o thing_n be_v direct_o opposite_a and_o contrary_n in_o those_o other_o great_a body_n who_o motion_n nevertheless_o appear_v not_o unto_o we_o till_o it_o be_v do_v and_o pass_v and_o when_o you_o have_v well_o weigh_v all_o this_o you_o must_v needs_o grant_v that_o they_o who_o in_o this_o case_n guide_v themselves_o mere_o by_o what_o appear_v unto_o their_o eye_n be_v ill_a judger_n of_o what_o they_o have_v not_o well_o examine_v it_o but_o peradventure_o some_o who_o can_v not_o all_o of_o a_o sudden_a be_v wean_v from_o what_o their_o sense_n have_v so_o long_o feed_v they_o with_o may_v ask_v yet_o further_o how_o it_o chance_v that_o we_o have_v no_o effect_n of_o this_o motion_n it_o show_v not_o itself_o in_o the_o air_n come_v to_o we_o a_o far_o of_o it_o stay_v not_o a_o thought_n or_o slackn_v his_o speed_n in_o fly_v so_o vast_a a_o space_n as_o be_v from_o the_o sun_n to_o us._n in_o fine_a there_o be_v no_o discovery_n of_o it_o but_o if_o galileus_n his_o conception_n be_v well_o ground_v that_o lightning_n give_v we_o a_o inkling_n of_o its_o motion_n begin_v from_o a_o little_a and_o increase_a to_o a_o great_a or_o if_o monsieur_n des_fw-fr cartes_n his_o opinion_n that_o it_o go_v slow_a in_o refraction_n be_v true_a we_o shall_v not_o need_v to_o study_v long_o for_o a_o answer_n but_o in_o galileus_n his_o experience_n it_o may_v be_v the_o break_n of_o the_o cloud_n which_o receive_v that_o succession_n of_o motion_n which_o we_o see_v and_o no_o slowness_n that_o light_n can_v acquire_v by_o the_o resistance_n of_o the_o refract_a body_n can_v be_v so_o great_a as_o to_o make_v that_o difference_n of_o line_n which_o monsieur_n des_n cartes_n most_o ingenious_o though_o i_o much_o doubt_v not_o true_o have_v apply_v to_o yield_v the_o reason_n of_o refraction_n as_o will_v appear_v in_o our_o further_a discourse_n therefore_o these_o be_v uncertain_a we_o will_v to_o show_v the_o unreasonableness_n of_o this_o question_n suppose_v there_o may_v be_v some_o observable_a tardity_n in_o the_o motion_n of_o light_n and_o then_o ask_v of_o they_o how_o we_o shall_v arrive_v to_o perceive_v it_o what_o sense_n shall_v we_o employ_v in_o this_o discovery_n it_o be_v true_a we_o be_v satisfy_v that_o sound_n take_v up_o time_n in_o come_v to_o our_o ear_n but_o it_o be_v because_o our_o eye_n be_v nimble_a than_o they_o and_o can_v perceive_v a_o good_a way_n distant_a the_o carpenter_n axe_n fall_v upon_o the_o timber_n that_o he_o hew_v or_o the_o fire_n flash_v out_o of_o the_o canon_n before_o they_o hear_v any_o news_n of_o they_o but_o shut_v your_o eye_n or_o inquire_v of_o a_o blind_a man_n and_o then_o neither_o you_o nor_o he_o can_v tell_v whether_o those_o sound_n fill_v your_o ear_n at_o the_o very_a instant_n they_o be_v beget_v or_o have_v spend_v some_o time_n in_o their_o journey_n to_o you_o thus_o than_o our_o eye_n instruct_v our_o ear_n but_o be_v there_o any_o sense_n quick_a than_o the_o sight_n or_o mean_n to_o know_v speedy_a than_o by_o our_o eye_n or_o can_v they_o see_v light_n or_o any_o thing_n else_o until_o it_o be_v with_o they_o we_o may_v then_o assure_o conclude_v that_o its_o motion_n be_v not_o to_o be_v discern_v as_o it_o come_v upon_o we_o nor_o itself_o to_o be_v perceive_v till_o its_o beam_n be_v in_o our_o eye_n but_o if_o there_o be_v any_o mean_n to_o discover_v its_o motion_n sure_o it_o must_v be_v in_o some_o medium_n through_o which_o it_o must_v struggle_v to_o get_v as_o fire_n do_v through_o iron_n which_o increase_a there_o by_o degree_n at_o last_o when_o it_o be_v red_a hot_a send_v beam_n of_o light_n quite_o through_o the_o plate_n that_o at_o the_o first_o refuse_v they_o passage_n and_o it_o make_v to_o this_o purpose_n that_o the_o lightconserue_n stone_n which_o be_v gather_v in_o italy_n must_v be_v set_v in_o the_o sun_n for_o some_o while_n before_o they_o retain_v light_n and_o the_o light_n will_v appear_v in_o they_o when_o they_o be_v bring_v back_o into_o the_o dark_a great_a or_o lesser_a until_o they_o come_v to_o their_o utmost_a period_n according_a as_o they_o have_v be_v long_o or_o a_o lesser_a while_n in_o the_o sun_n and_o our_o eye_n the_o long_o they_o remain_v in_o the_o light_n the_o more_o dazzle_v they_o be_v if_o they_o be_v sudden_o pass_v into_o the_o dark_a and_o a_o curious_a experiencer_n do_v affirm_v that_o the_o likeness_n of_o any_o object_n but_o particular_o he_o have_v often_o observe_v it_o of_o a_o iron_n grate_n if_o it_o be_v strong_o enlighten_v will_v appear_v to_o a_o other_o in_o the_o eye_n of_o he_o that_o look_v strong_o and_o steady_o upon_o it_o till_o he_o be_v dazzle_v by_o it_o even_o after_o he_o shall_v have_v turn_v his_o eye_n from_o it_o and_o the_o wheel_n of_o fire_n can_v never_o be_v make_v appear_v unto_o our_o eye_n by_o the_o whirl_a of_o the_o firesticke_a we_o even_o now_o speak_v of_o unless_o the_o impression_n make_v by_o the_o fire_n from_o one_o place_n do_v remain_v in_o the_o eye_n a_o while_n after_o the_o fire_n be_v go_v from_o the_o place_n whence_o it_o send_v that_o ray_n whence_o it_o be_v evident_a that_o light_n and_o the_o picture_n of_o object_n do_v require_v time_n to_o settle_v and_o to_o unsettle_v in_o a_o subject_n if_o then_o light_n make_v a_o great_a impression_n with_o time_n why_o shall_v we_o doubt_v but_o the_o first_o come_v also_o in_o time_n be_v our_o sense_n so_o nimble_a as_o to_o perceive_v it_o but_o than_o it_o may_v be_v object_v be_v that_o the_o sun_n will_v never_o be_v true_o in_o that_o place_n in_o which_o unto_o our_o eye_n it_o appear_v to_o be_v because_o that_o it_o be_v see_v by_o mean_n of_o the_o light_n which_o issue_v from_o it_o if_o that_o light_n require_v time_n to_o move_v in_o the_o sun_n who_o motion_n be_v so_o swift_a will_v be_v remove_v from_o the_o place_n where_o the_o light_n leave_v it_o before_o it_o can_v be_v with_o we_o to_o give_v tiding_n of_o he_o to_o this_o i_o answer_v allow_v that_o peradventure_o it_o may_v be_v so_o who_o know_v the_o contrary_a or_o what_o inconvenience_n will_v follow_v if_o it_o be_v admit_v indeed_o how_o can_v it_o be_v otherwise_o in_o refraction_n we_o be_v sure_a it_o be_v so_o and_o therefore_o at_o no_o time_n but_o when_o the_o sun_n be_v perpendicular_o over_o our_o head_n we_o can_v be_v certain_a of_o the_o contrary_a although_o it_o shall_v send_v its_o light_n to_o we_o in_o a_o instant_n unless_o happy_o the_o truth_n of_o the_o case_n shall_v be_v that_o the_o sun_n do_v not_o move_v about_o we_o but_o we_o turn_v to_o his_o light_n and_o then_o the_o objection_n also_o lose_v its_o aim_n but_o the_o more_o we_o press_v the_o quickness_n of_o light_n piece_n the_o more_o we_o engage_v ourselves_o in_o the_o difficulty_n why_o light_n do_v not_o shatter_v the_o air_n in_o piece_n as_o likewise_o all_o solid_a body_n whatsoever_o for_o the_o master_n of_o natural_a philosophy_n do_v tell_v we_o that_o a_o soft_a thing_n with_o a_o great_a velocity_n be_v as_o powerful_a in_o effect_n when_o it_o give_v a_o blow_n as_o a_o hard_a thing_n go_v slow_o and_o according_o experience_n teach_v we_o that_o a_o tallow_n candle_n shoot_v in_o a_o gun_n will_v go_v through_o a_o broad_a or_o kill_v a_o man_n wherefore_o light_n have_v such_o a_o infinite_a celerity_n shall_v also_o have_v a_o
unresistable_a force_n to_o pierce_v and_o shatter_v not_o only_o the_o air_n but_o even_o the_o hard_a body_n that_o be_v peradventure_o some_o may_v think_v it_o reasonable_a to_o grant_v the_o consequence_n in_o due_a circumstance_n since_o experience_n teach_v we_o that_o the_o congregation_n of_o a_o little_a light_n by_o a_o glass_n will_v set_v very_o solid_a body_n on_o fire_n and_o will_v melt_v metal_n in_o a_o very_a short_a space_n which_o show_v a_o great_a activity_n and_o the_o great_a activity_n show_v a_o great_a percussion_n burn_v be_v effect_v by_o a_o kind_n of_o attrition_n of_o the_o thing_n burn_v and_o the_o great_a force_n which_o fire_n show_v in_o gun_n and_o in_o mine_n be_v but_o a_o multiplication_n of_o the_o same_o do_v evident_o convince_v that_o of_o its_o own_o nature_n it_o make_v a_o strong_a percussion_n when_o all_o due_a circumstance_n concur_v whereas_o it_o have_v but_o little_a effect_n if_o the_o due_a circumstance_n be_v want_v as_o we_o may_v observe_v in_o the_o insensible_a burn_a of_o so_o rarify_v a_o body_n as_o pure_a spirit_n of_o wine_n convert_v into_o flame_n but_o we_o must_v examine_v the_o matter_n more_o particular_o and_o must_v seek_v the_o cause_n why_o a_o violent_a effect_n do_v not_o always_o appear_v wheresoever_o light_n strike_v for_o the_o which_o we_o be_v to_o note_v that_o three_o thing_n do_v concur_v to_o make_v a_o percussion_n great_a the_o bigness_n the_o density_n and_o the_o celerity_n of_o the_o body_n move_v of_o which_o three_o there_o be_v only_o one_o in_o light_n to_o wit_n celerity_n for_o it_o have_v the_o great_a rarity_n and_o the_o ray_n of_o it_o be_v the_o small_a parcel_n of_o all_o natural_a body_n and_o therefore_o since_o only_a celerity_n be_v considerable_a in_o the_o account_n of_o light_n percussion_n we_o must_v examine_v what_o celerity_n be_v necessary_a to_o make_v the_o stroke_n of_o a_o ray_n sensible_a first_o than_o we_o see_v that_o all_o the_o mote_n of_o the_o air_n nay_o even_o feather_n and_o straw_n do_v make_v no_o sensible_a percussion_n when_o they_o fall_v upon_o we_o therefore_o we_o must_v in_o light_n have_v at_o the_o least_o a_o celerity_n that_o may_v be_v to_o the_o celerity_n of_o the_o straw_n fall_v upon_o our_o hand_n for_o example_n as_o the_o density_n of_o the_o straw_n be_v to_o the_o density_n of_o light_n that_o the_o percussion_n of_o light_n may_v be_v in_o the_o least_o degree_n sensible_a but_o let_v we_o take_v a_o corn_n of_o gunnepowder_n instead_o of_o a_o straw_n between_o which_o there_o can_v not_o be_v much_o difference_n and_o then_o put_v that_o the_o density_n of_o fire_n be_v to_o the_o density_n of_o gunnepowder_n as_o 1._o to_o 125000_o and_o that_o the_o density_n of_o the_o light_n we_o have_v here_o in_o the_o earth_n be_v to_o the_o density_n of_o that_o part_n of_o fire_n which_o be_v in_o the_o sun_n body_n as_o the_o body_n of_o the_o sun_n be_v to_o that_o body_n which_o be_v call_v orbis_n magnus_fw-la who_o semidiameter_n be_v the_o distance_n between_o the_o sun_n and_o the_o earth_n which_o must_v be_v in_o subtriple_a proportion_n of_o the_o diameter_n of_o the_o sun_n to_o the_o diameter_n of_o the_o great_a orb_n it_o follow_v that_o 125000._o be_v multiply_v by_o the_o proportion_n of_o the_o great_a orb_n unto_o the_o sun_n which_o galileo_n tell_v we_o be_v as_o 106000000._o unto_o one_o will_v give_v a_o scantling_n of_o what_o degree_n of_o celerity_n light_n must_v have_v more_o than_o a_o corn_n of_o gunnepouder_n to_o recompense_v the_o excess_n of_o weight_n which_o be_v in_o a_o corn_n of_o gunnepouder_n above_o that_o which_o be_v in_o a_o ray_n of_o light_n as_o big_a as_o a_o corn_n of_o gunnepouder_n which_o will_v amount_v to_o be_v much_o great_a than_o the_o proportion_n of_o the_o semidiater_n of_o orbis_n magnus_fw-la to_o the_o semidiater_n of_o the_o corn_n of_o gunnepouder_n for_o if_o you_o reckon_v 5._o grain_n of_o gunnepouder_n to_o a_o barley_n corn_n breadth_n and_o 12._o of_o they_o in_o a_o inch_n and_o 12._o inch_n in_o a_o foot_n and_o 3._o foot_n in_o a_o pace_n and_o 1000_o pace_n in_o a_o mile_n and_o 3500._o mile_n in_o the_o semidiameter_n of_o the_o earth_n and_o 1208._o semidiameter_n of_o the_o earth_n in_o the_o semidiameter_n of_o the_o orbis_n magnus_fw-la there_o will_v be_v in_o it_o but_o 9132480000000._o grain_n of_o gunnepouder_n whereas_o the_o other_o calculation_n make_v light_a to_o be_v 13250000000000._o time_n rave_a than_o gunnepouder_n which_o be_v almost_o ten_o time_n a_o great_a proportion_n than_o the_o other_o and_o yet_o this_o celerity_n supply_v but_o one_o of_o the_o two_o condition_n want_v in_o light_a to_o make_v its_o percussion_n sensible_a namely_o density_n now_o because_o the_o same_o velocity_n in_o a_o body_n of_o a_o lesser_a bulk_n do_v not_o make_v so_o great_a a_o percussion_n as_o it_o do_v in_o a_o big_a body_n and_o that_o the_o littleness_n of_o the_o least_o part_n of_o body_n follow_v the_o proportion_n of_o their_o rarity_n this_o vast_a proportion_n of_o celerity_n must_v again_o be_v draw_v into_o itself_o to_o supply_v for_o the_o excess_n in_o bigness_n that_o a_o corn_n of_o gunnepouder_n have_v over_o a_o atom_n of_o light_n and_o the_o product_n of_o this_o multiplication_n will_v be_v the_o celerity_n require_v to_o supply_v for_o both_o defect_n which_o evident_o show_v it_o be_v impossible_a that_o a_o ray_n of_o light_n shall_v make_v any_o sensible_a percussion_n though_o it_o be_v a_o body_n especial_o consider_v that_o sense_n never_o take_v notice_n of_o what_o be_v perpetual_o do_v in_o a_o moderate_a degree_n and_o therefore_o after_o this_o minute_n look_v into_o all_o circumstance_n we_o need_v not_o have_v difficulty_n in_o allow_v unto_o light_n the_o great_a celerity_n imaginable_a and_o a_o percussion_n proportionate_a to_o such_o a_o celerity_n in_o so_o rare_a a_o body_n and_o yet_o not_o fear_v any_o violent_a effect_n from_o its_o blow_n unless_o it_o be_v condense_v and_o many_o part_n of_o it_o be_v bring_v together_o to_o work_v as_o if_o they_o be_v but_o one_o as_o concern_v the_o last_o objection_n wind_n that_o if_o light_n be_v a_o body_n it_o will_v be_v fan_v by_o the_o wind_n we_o must_v first_o consider_v what_o be_v the_o cause_n of_o a_o thing_n appear_v to_o be_v move_v and_o then_o examine_v what_o force_n that_o cause_n have_v in_o light_n as_o for_o the_o first_o part_n we_o see_v that_o when_o a_o body_n be_v discern_v now_o in_o one_o place_n now_o in_o a_o other_o than_o it_o appear_v te_fw-la be_v move_v and_o this_o we_o see_v happen_v also_o in_o light_n as_o when_o the_o sun_n or_o a_o candle_n be_v carry_v or_o move_v the_o light_n thereof_o in_o the_o body_n of_o the_o candle_n or_o sun_n seem_v to_o be_v move_v along_o with_o it_o and_o the_o like_v be_v in_o a_o shine_a cloud_n or_o comet_n but_o to_o apply_v this_o to_o our_o purpose_n we_o must_v note_v that_o the_o intention_n of_o the_o objection_n be_v that_o the_o light_n which_o go_v from_o the_o fire_n to_o a_o opacous_a body_n far_o distant_a without_o interruption_n of_o its_o continuity_n shall_v seem_v to_o be_v jog_v or_o put_v out_o of_o its_o way_n by_o the_o wind_n that_o cross_v it_o wherein_o the_o first_o fail_v be_v that_o the_o obiectour_n conceive_v light_a to_o send_v species_n unto_o our_o eye_n from_o the_o midst_n of_o its_o line_n whereas_o with_o a_o little_a consideration_n he_o may_v perceive_v that_o not_o light_n be_v see_v by_o we_o but_o that_o which_o be_v reflect_v from_o a_o opacous_a body_n to_o our_o eye_n so_o that_o the_o light_n he_o mean_v in_o his_o objection_n be_v never_o see_v at_o all_o second_o it_o be_v manifest_a that_o the_o light_n which_o strick_v our_o eye_n do_v strike_v it_o in_o a_o straight_a line_n and_o seem_v to_o be_v at_o the_o end_n of_o that_o straight_a line_n wheresoeur_fw-fr that_n be_v and_o so_o can_v never_o appear_v to_o be_v in_o a_o other_o place_n but_o the_o light_n which_o we_o see_v in_o a_o other_o place_n we_o conceive_v to_o be_v a_o other_o light_n which_o make_v it_o again_o evident_a that_o the_o light_n can_v never_o appear_v to_o shake_v though_o we_o shall_v suppose_v that_o light_n may_v be_v see_v from_o the_o middle_n of_o its_o line_n for_o no_o part_n of_o wind_n or_o air_n can_v come_v into_o any_o sensible_a place_n in_o that_o middle_n of_o the_o line_n with_o such_o speed_n that_o new_a light_n from_o the_o source_n do_v not_o illuminate_v it_o soon_o than_o it_o can_v be_v see_v by_o we_o wherefore_o it_o will_v appear_v to_o we_o illuminate_v as_o be_v in_o that_o place_n and_o therefore_o the_o light_n can_v never_o
appear_v shake_v and_o last_o it_o be_v easy_a for_o the_o air_n or_o wind_n to_o destroy_v the_o light_n than_o it_o be_v to_o remove_v it_o out_o of_o its_o place_n wherefore_o it_o can_v never_o so_o remove_v it_o out_o of_o its_o place_n as_o that_o we_o shall_v see_v it_o in_o a_o other_o place_n but_o if_o it_o shall_v remove_v it_o it_o will_v wrap_v it_o up_o within_o itself_o and_o hide_v it_o together_o in_o conclusion_n after_o this_o long_a dispute_n concern_v the_o nature_n of_o light_n if_o we_o consider_v well_o what_o have_v be_v say_v on_o both_o side_n to_o which_o much_o more_o may_v be_v add_v but_o that_o we_o have_v already_o trespass_v in_o length_n and_o i_o conceive_v enough_o be_v say_v to_o decide_v the_o matter_n a_o equal_a judge_n will_v find_v the_o balance_n of_o the_o question_n to_o hang_v upon_o these_o term_n that_o to_o prove_v the_o nature_n of_o light_a to_o be_v material_a and_o corporeal_a be_v bring_v a_o company_n of_o accident_n well_o know_v to_o be_v the_o propriety_n of_o quantity_n or_o body_n and_o as_o well_o know_v to_o be_v in_o light_n even_o so_o far_o as_o that_o it_o be_v manifest_a that_o light_n in_o its_o begin_n before_o it_o be_v disperse_v be_v fire_n and_o if_o again_o it_o be_v gather_v together_o it_o show_v itself_o again_o to_o be_v fire_n and_o the_o receptacle_n of_o it_o be_v the_o receptacle_n of_o a_o body_n be_v a_o multitude_n of_o pore_n as_o the_o hardness_n and_o coldness_n of_o transparent_a thing_n do_v give_v we_o to_o understand_v of_o which_o we_o shall_v hereafter_o have_v occasion_n to_o discourse_n on_o the_o contrary_a side_n whatsoever_o argument_n be_v bring_v against_o light_n be_v a_o body_n be_v only_a negative_n as_o that_o we_o see_v not_o any_o motion_n of_o light_n that_o we_o do_v not_o discern_v where_o the_o confine_n be_v between_o light_n and_o air_n that_o we_o see_v not_o room_n for_o both_o of_o they_o or_o for_o more_o light_n to_o be_v together_o and_o the_o like_a which_o be_v to_o oppose_v negative_a proof_n against_o affirmative_a one_o and_o to_o build_v a_o doctrine_n upon_o the_o defect_n of_o our_o sense_n or_o upon_o the_o likeness_n of_o body_n which_o be_v extreme_o unlike_a expect_v the_o same_o effect_n from_o the_o most_o subtle_a as_o from_o the_o most_o gross_a one_o all_o which_o together_o with_o the_o authority_n of_o aristotle_n and_o his_o follower_n have_v turn_v light_n into_o darkness_n and_o have_v make_v we_o almost_o deny_v the_o light_n of_o our_o own_o eye_n fire_n now_o then_o to_o take_v our_o leave_n of_o this_o important_a question_n let_v we_o return_v to_o the_o principle_n from_o whence_o we_o begin_v and_o consider_v that_o see_v fire_n be_v the_o most_o rare_a of_o all_o the_o element_n and_o very_o dry_a and_o that_o out_o of_o the_o former_a it_o have_v that_o it_o may_v be_v cut_n into_o very_o small_a piece_n and_o out_o of_o the_o latter_a that_o it_o conserve_v its_o own_o figure_n and_o so_o be_v apt_a to_o divide_v whatsoever_o fluid_n body_n and_o join_v to_o these_o two_o principle_n that_o it_o multiply_v extreme_o in_o its_o source_n it_o must_v of_o necessity_n follow_v that_o it_o shoot_v out_o in_o great_a multitude_n little_a small_a part_n into_o the_o air_n and_o into_o other_o body_n circumfuse_v with_o great_a dilatation_n in_o a_o spherical_a manner_n and_o likewise_o that_o these_o little_a part_n be_v easy_o break_v and_o new_a one_o still_o follow_v the_o former_a be_v still_o multiply_v in_o straight_a line_n from_o the_o place_n where_o they_o break_v out_o of_o which_o it_o be_v evident_a that_o of_o necessity_n it_o must_v in_o a_o manner_n fill_v all_o place_n and_o that_o no_o sensible_a place_n be_v so_o little_a but_o that_o fire_n will_v be_v find_v in_o it_o if_o the_o medium_n be_v capacious_a as_o also_o that_o its_o extreme_a lest_o part_n will_v be_v very_o easy_o swallow_v up_o in_o the_o part_n of_o the_o air_n which_o be_v humid_a and_o by_o their_o enfold_v be_v as_o it_o be_v quite_o lose_v so_o as_o to_o loose_v the_o appearance_n of_o fire_n again_o that_o in_o its_o reflection_n it_o will_v follow_v the_o nature_n of_o grosser_n body_n and_o have_v glidinge_n like_o they_o which_o be_v that_o we_o call_v refraction_n that_o little_a streaminge_n from_o it_o will_v cross_v one_o a_o other_o in_o excessive_a great_a number_n in_o a_o unsensible_a part_n of_o space_n without_o hinder_v one_o a_o other_o that_o its_o motion_n will_v be_v quick_a than_o sense_n can_v judge_v of_o and_o therefore_o will_v seem_v to_o move_v in_o a_o instant_n or_o to_o stand_v still_o as_o in_o a_o stagnation_n that_o if_o there_o be_v any_o body_n so_o porous_a with_o little_a and_o thick_a pore_n as_o that_o the_o pore_n arrive_v near_o unto_o equal_v the_o substance_n of_o the_o body_n then_o such_o a_o body_n will_v be_v so_o fill_v with_o these_o little_a particle_n of_o fire_n that_o it_o will_v appear_v as_o if_o there_o be_v no_o stop_n in_o its_o passage_n but_o be_v all_o fill_v with_o fire_n and_o yet_o many_o of_o these_o little_a part_n will_v be_v reflect_v and_o whatsoever_o qnality_n else_o we_o find_v in_o light_n we_o shall_v be_v able_a to_o derive_v they_o out_o of_o these_o principle_n and_o show_v that_o fire_n must_v of_o necessity_n do_v what_o experience_n teach_v we_o that_o light_n do_v that_o be_v to_o say_v in_o one_o word_n it_o will_v show_v we_o that_o fire_n be_v light_a but_o if_o fire_n be_v light_a than_o light_n must_v needs_o be_v fire_n and_o so_o we_o leave_v this_o matter_n the_o nine_o chapter_n of_o local_a motion_n in_o common_a though_n in_o the_o five_o chapter_n succession_n we_o make_v only_a earth_n the_o pretender_n in_o the_o controversy_n against_o fire_n for_o superiority_n in_o activity_n and_o in_o very_a truth_n the_o great_a force_n of_o gravity_n do_v appear_v in_o those_o body_n which_o be_v eminent_o earthy_a nevertheless_o both_o water_n and_o air_n as_o appear_v out_o of_o the_o four_o chapter_n of_o the_o element_n do_v agree_v with_o earth_n in_o have_v gravity_n and_o gravity_n be_v the_o chief_a virtue_n to_o make_v they_o efficient_n so_o that_o upon_o the_o matter_n this_o plea_n be_v common_a to_o all_o the_o three_o element_n wherefore_o to_o explicate_v this_o virtue_n whereby_o these_o three_o weighty_a element_n do_v work_v let_v we_o call_v to_o mind_n what_o we_o say_v in_o the_o begin_n of_o the_o last_o chapter_n concern_v local_a motion_n to_o wit_n that_o according_a as_o the_o body_n move_v or_o the_o divider_n do_v more_o and_o more_o enter_v into_o the_o divide_a body_n so_o it_o do_v join_v itself_o to_o some_o new_a part_n of_o the_o medium_n or_o divide_a body_n and_o do_v in_o like_a manner_n forsake_v other_o whence_o it_o happen_v that_o in_o every_o part_n of_o motion_n it_o possess_v a_o great_a part_n of_o the_o medium_n than_o itself_o can_v fill_v at_o once_o and_o because_o by_o the_o limitation_n and_o confinednesse_n of_o every_o magnitude_n unto_o just_a what_o it_o be_v and_o no_o more_o it_o be_v impossible_a that_o a_o lesser_a body_n shall_v at_o once_o equallise_n a_o great_a it_o follow_v that_o this_o division_n or_o motion_n whereby_o a_o body_n attain_v to_o fill_v a_o place_n big_a than_o itself_o must_v be_v do_v successive_o that_o be_v it_o must_v first_o fill_v one_o part_n of_o the_o place_n it_o move_v in_o than_o a_o other_o and_o so_o proceed_v on_o till_o it_o have_v measure_v itself_o with_o every_o part_n of_o the_o place_n from_o the_o first_o beginning_n of_o the_o line_n of_o motion_n to_o the_o last_o period_n of_o it_o where_o the_o body_n rest_v by_o which_o discourse_n it_o be_v evident_a that_o there_o can_v not_o in_o nature_n be_v a_o strength_n so_o great_a as_o to_o make_v the_o least_o or_o quick_a mooveable_a that_o be_v to_o pass_v in_o a_o instant_n or_o all_o together_o over_o the_o least_o place_n that_o can_v be_v imagine_v for_o that_o will_v make_v the_o move_v body_n remain_v what_o it_o be_v in_o regard_n of_o its_o biggenesse_n to_o equallise_n ad_fw-la fit_a a_o thing_n big_a than_o it_o be_v therefore_o it_o be_v manifest_a that_o motion_n must_v consist_v of_o such_o part_n as_o have_v this_o nature_n that_o while_o one_o of_o they_o be_v in_o be_v the_o other_o be_v not_o yet_o and_o as_o by_o degree_n every_o new_a one_o come_v to_o be_v all_o the_o other_o that_o be_v before_o do_v vanish_v and_o cease_v to_o be_v which_o circumstance_n accompany_v motion_n we_o call_v succession_n succession_n and_o whatsoever_o be_v so_o do_v be_v say_v to_o be_v do_v in_o time_n which_o be_v the_o common_a measure_n of_o all_o succession_n for_o the_o
direct_v and_o impel_v by_o extrinsecall_a agent_n let_v we_o suppose_v that_o a_o body_n be_v place_v at_o liberty_n in_o the_o open_a air_n and_o then_o cast_v whether_o it_o will_v be_v move_v from_o the_o place_n we_o suppose_v it_o in_o and_o which_o way_n it_o will_v be_v move_v we_o shall_v find_v that_o it_o must_v of_o necessity_n happen_v that_o it_o shall_v descend_v and_o fall_v down_o till_o it_o meet_v with_o some_o other_o gross_a body_n to_o stay_v and_o support_v it_o for_o although_o of_o itself_o it_o will_v move_v no_o way_n yet_o if_o we_o find_v that_o any_o other_o body_n strike_v efficacious_o enough_o upon_o it_o we_o can_v not_o doubt_v but_o that_o it_o will_v move_v that_o way_n which_o the_o strike_a body_n impell_v it_o now_o it_o be_v strike_v upon_o on_o both_o side_n above_n and_o below_o by_o the_o ascend_a and_o the_o descend_a atom_n the_o rare_a one_o strike_v upon_o the_o bottom_n of_o it_o and_o drive_v it_o upwardes_o and_o the_o denser_n one_o press_v upon_o the_o top_n of_o it_o and_o bear_v it_o downwards_o but_o if_o you_o compare_v the_o impression_n that_o the_o denser_fw-fr atom_n make_v with_o those_o that_o proceed_v from_o the_o rare_a one_o it_o be_v evident_a that_o the_o dense_a one_o must_v be_v the_o more_o powerful_a and_o therefore_o will_v assure_o determine_v the_o motion_n of_o the_o body_n in_o the_o air_n that_o way_n they_o go_v which_o be_v downwards_o nor_o need_v we_o fear_v lest_o the_o litlenesse_n of_o the_o agent_n or_o the_o feebleness_n of_o their_o stroke_n shall_v not_o be_v sufficient_a to_o work_v this_o effect_n since_o there_o be_v no_o resistance_n in_o the_o body_n itself_o and_o the_o air_n be_v continual_o cut_v in_o piece_n by_o the_o sun_n beam_n and_o by_o the_o motion_n of_o little_a body_n so_o that_o the_o adhesion_n unto_o air_n of_o the_o body_n to_o be_v move_v will_v be_v no_o hindrance_n to_o this_o motion_n especial_o consider_v the_o perpetual_a new_a percussion_n and_o the_o multitude_n of_o they_o and_o how_o no_o force_n be_v so_o little_a but_o that_o with_o time_n and_o multiplication_n it_o will_v overcome_v any_o resistance_n but_o if_o any_o man_n desire_v to_o look_v upon_o gravity_n as_o it_o be_v at_o one_o view_n the_o whole_a chain_n of_o this_o doctrine_n of_o gravity_n let_v he_o turn_v the_o first_o cast_v of_o his_o eye_n upon_o what_o we_o have_v say_v of_o fire_n when_o we_o explicate_v the_o nature_n of_o it_o to_o wit_n that_o it_o begin_v from_o a_o little_a source_n and_o by_o extreme_a multiplication_n and_o rarefaction_n it_o extend_v itself_o into_o a_o great_a sphere_n and_o then_o he_o will_v perceive_v the_o reason_n why_o light_n be_v dart_v from_o the_o body_n of_o the_o sun_n with_o that_o incredible_a celerity_n wherewith_o its_o beam_n fly_v to_o visit_v the_o remote_a part_n of_o the_o world_n and_o how_o of_o necessity_n it_o give_v motion_n to_o all_o circumstant_fw-la body_n since_o it_o be_v violent_o thrust_v forward_o by_o so_o extreme_a a_o rarefaction_n and_o the_o further_a it_o go_v be_v still_o the_o more_o rarify_v and_o dilate_v next_o let_v he_o reflect_v how_o infinite_o the_o quickenesse_n of_o light_n motion_n do_v prevent_v the_o motion_n of_o a_o moist_a body_n such_o a_o one_o as_o air_n be_v and_o then_o he_o will_v plain_o see_v that_o the_o first_o motion_n which_o light_n be_v able_a to_o give_v unto_o the_o air_n must_v needs_o be_v a_o swell_a of_o that_o moist_a element_n perpendicular_o round_a about_o the_o earth_n for_o the_o ray_n descendent_a and_o the_o ray_n reflectent_n fly_v with_o so_o great_a a_o speed_n that_o the_o air_n between_o they_o can_v not_o take_v a_o formal_a ply_v any_o way_n before_o the_o beam_n of_o light_n be_v on_o both_o side_n of_o it_o it_o follow_v that_o according_a to_o the_o nature_n of_o humid_a thing_n it_o must_v first_o only_o swell_v for_o that_o be_v the_o begin_n of_o motion_n in_o they_o when_o heat_n enter_v into_o they_o and_o work_v upon_o they_o and_o thus_o he_o may_v confident_o resolve_v himself_o that_o the_o first_o motion_n which_o light_n cause_v in_o the_o air_n will_v be_v a_o swell_a of_o it_o between_o the_o two_o ray_n towards_o the_o middle_n of_o they_o that_o be_v perpendicular_o from_o the_o surface_n of_o the_o earth_n and_o out_o of_o this_o he_o will_v likewise_o plain_o see_v that_o if_o there_o be_v any_o other_o little_a dense_a body_n float_v in_o the_o air_n they_o must_v likewise_o mount_v a_o little_a through_o this_o swell_a and_o rise_v of_o the_o air_n but_o that_o mount_a will_v be_v no_o more_o than_o the_o immediate_a part_n of_o the_o air_n themselves_o do_v move_v because_o this_o motion_n be_v not_o by_o way_n of_o impulse_n or_o stroke_n that_o the_o air_n give_v those_o denser_n body_n but_o by_o way_n of_o contain_v they_o in_o it_o and_o carry_v they_o with_o it_o â—o_z that_o it_o give_v they_o no_o more_o celerity_n then_o to_o make_v they_o go_v with_o itself_o and_o as_o part_n of_o itself_o then_o let_v he_o consider_v that_o light_n or_o fire_n by_o much_o beat_n upon_o the_o earth_n divide_v some_o little_a part_n of_o it_o from_o other_o whereof_o if_o any_o do_v become_v so_o small_a and_o tractable_a as_o not_o to_o exceed_v the_o strength_n which_o the_o ray_n have_v to_o manage_v they_o the_o return_a ray_n will_v at_o their_o go_v back_o carry_v away_o with_o they_o or_o drive_v before_o they_o such_o little_a atom_n as_o they_o have_v make_v or_o meet_v with_o and_o so_o fill_v the_o air_n with_o little_a body_n cut_v out_o of_o the_o earth_n after_o this_o let_v he_o consider_v that_o when_o light_n carry_v up_o a_o atom_n with_o it_o the_o light_n and_o the_o atom_n do_v stick_v together_o and_o do_v make_v one_o ascend_a body_n in_o such_o sort_n as_o when_o a_o empty_a dish_n lie_v upon_o the_o water_n the_o air_n in_o the_o dish_n make_v one_o descendent_a body_n together_o with_o the_o dish_n itself_o so_o that_o the_o density_n of_o the_o whole_a body_n of_o air_n and_o dish_n which_o in_o this_o case_n be_v but_o as_o one_o body_n be_v to_o be_v esteem_v according_a to_o the_o density_n of_o the_o two_o part_n one_o of_o they_o be_v allay_v by_o the_o other_o as_o if_o the_o whole_a be_v throughout_o of_o such_o a_o proportion_n of_o density_n as_o will_v arise_v out_o of_o the_o composition_n and_o knead_n together_o the_o several_a density_n of_o those_o two_o part_n now_o then_o when_o these_o little_a compound_a body_n of_o light_n and_o earth_n be_v carry_v up_o to_o a_o determinate_a height_n the_o part_n of_o fire_n or_o light_n do_v by_o little_a and_o little_o break_v away_o from_o they_o and_o thereby_o the_o bulk_n of_o the_o part_n which_o be_v leave_v become_v of_o a_o different_a degree_n of_o density_n quantity_n for_o quantity_n from_o the_o bulk_n of_o the_o entire_a atom_n when_o light_n be_v part_n of_o it_o and_o consequent_o it_o be_v denser_n than_o it_o be_v beside_o let_v he_o consider_v that_o when_o these_o body_n ascend_v they_o do_v go_v from_o a_o narrow_a room_n to_o a_o large_a one_o that_o be_v from_o the_o centerwardes_o to_o the_o circumference_n but_o when_o they_o come_v down_o again_o they_o go_v from_o a_o large_a part_n to_o a_o narrow_a whence_o it_o follow_v that_o as_o they_o descend_v they_o draw_v close_o and_o close_o together_o and_o by_o consequence_n be_v subject_a to_o meet_v and_o to_o fall_v in_o one_o with_o a_o other_o and_o thereby_o to_o increase_v their_o bulk_n and_o to_o become_v more_o powerful_a in_o density_n not_o only_o by_o the_o loss_n of_o their_o fire_n but_o also_o by_o the_o increase_n of_o their_o quantity_n and_o so_o it_o be_v evident_a that_o they_o be_v denser_n come_v down_o then_o go_v up_o last_o let_v he_o consider_v that_o those_o atom_n which_o go_v up_o first_o and_o be_v part_v from_o their_o volatile_a companion_n of_o fire_n or_o light_n must_v begin_v to_o come_v down_o apace_o when_o other_o new_a atom_n which_o still_o have_v their_o light_n incorporate_v with_o they_o do_v ascend_v to_o where_o they_o be_v and_o do_v go_v beyond_o they_o by_o reason_n of_o their_o great_a levity_n and_o as_o the_o latter_a atom_n come_v up_o with_o a_o violence_n and_o a_o great_a celerity_n so_o must_v the_o first_o go_v down_o with_o a_o smart_a impulse_n and_o by_o consequence_n be_v more_o dense_a than_o the_o air_n in_o which_o they_o be_v carry_v must_v of_o necessity_n cut_v their_o way_n through_o that_o liquid_a and_o rare_a medium_n and_o go_v the_o next_o way_n to_o supply_v the_o defect_n and_o room_n of_o the_o atom_n which_o ascend_v that_o be_v perpendicular_o to_o the_o earth_n
fro_o and_o take_v a_o body_n of_o concave_n surface_v we_o shall_v according_a to_o this_o doctrine_n of_o we_o find_v the_o cause_n of_o refraction_n just_a contrary_n and_o according_o experience_n likewise_o show_v we_o the_o effect_n to_o be_v so_o too_o and_o therefore_o since_o experience_n agree_v exact_o with_o our_o rule_n we_o can_v not_o doubt_v but_o that_o the_o principle_n upon_o which_o we_o go_v surface_n be_v well_o lay_v but_o because_o crooked_a surface_n may_v have_v many_o irregularity_n it_o will_v not_o be_v amiss_o to_o give_v a_o rule_n by_o which_o all_o of_o they_o may_v be_v bring_v unto_o a_o certainty_n and_o this_o it_o be_v that_o reflection_n from_o crooked_a superficiese_n be_v equal_a to_o the_o reflection_n that_o be_v make_v from_o such_o plain_a superficiese_n as_o be_v tangent_n to_o the_o crooked_a one_o in_o that_o point_n from_o whence_o the_o reflection_n be_v make_v which_o principal_a the_o master_n of_o optike_n do_v take_v out_o of_o a_o mathematical_a supposition_n of_o the_o unity_n of_o the_o reflect_a point_n in_o both_o the_o surface_n the_o crooked_a and_o the_o plain_a but_o we_o take_v it_o out_o of_o the_o insensibility_n of_o the_o difference_n of_o so_o little_a a_o part_n in_o the_o two_o different_a surface_n as_o serve_v to_o reflect_v a_o ray_n of_o light_n for_o where_o the_o difference_n be_v insensible_a in_o the_o cause_n there_o likewise_o the_o difference_n be_v so_o little_a in_o the_o effect_n as_o sense_n can_v not_o judge_v of_o they_o which_o be_v as_o much_o as_o be_v requisite_a to_o our_o purpose_n now_o see_v that_o in_o the_o mathematical_a supposition_n the_o point_n where_o the_o reflection_n be_v make_v be_v indifferent_a to_o both_o the_o surface_n it_o follow_v that_o it_o import_v not_o whether_o superficies_n you_o take_v to_o know_v the_o quality_n of_o reflection_n by_o this_o principle_n then_o be_v settle_v that_o the_o reflection_n must_v follow_v the_o nature_n of_o the_o tangent_fw-la surface_v and_o it_o be_v prove_v that_o in_o plain_a surface_n it_o will_v happen_v in_o such_o sort_n as_o we_o have_v explicate_v it_o follow_v that_o in_o any_o crooked_a superficies_n of_o what_o figure_n soever_o the_o same_o also_o will_v happen_v now_o see_v we_o have_v former_o declare_v that_o refraction_n be_v but_o a_o certain_a kind_n of_o reflection_n what_o we_o have_v say_v here_o of_o reflection_n may_v be_v apply_v to_o refraction_n pore_n but_o there_o remain_v yet_o untouched_a one_o affection_n more_o of_o refraction_n which_o be_v that_o some_o diaphanous_a body_n do_v in_o their_o inward_a part_n reflect_v more_o than_o other_o which_o be_v that_o which_o we_o call_v refraction_n as_o experience_n show_v us._n concern_v which_o effect_n we_o be_v to_o consider_v that_o diaphanous_a body_n may_v in_o their_o composition_n have_v two_o difference_n for_o some_o be_v compose_v of_o great_a part_n and_o great_a pore_n other_o of_o lesser_a part_n and_o lesser_a pore_n it_o be_v true_a there_o may_v be_v other_o combination_n of_o pore_n and_o part_n yet_o by_o these_o two_o the_o rest_n may_v be_v esteem_v as_o for_o the_o first_o combination_n we_o see_v that_o because_o the_o pore_n be_v great_a a_o great_a multitude_n of_o part_n of_o light_n may_v pass_v together_o through_o one_o poor_a and_o because_o the_o part_n be_v great_a likewise_o a_o great_a multitude_n of_o ray_n may_v reflect_v from_o the_o same_o part_n and_o may_v find_v the_o same_o passage_n quite_o throughout_o the_o diaphanous_a body_n on_o the_o contrary_a side_n in_o the_o second_o combination_n where_o both_o the_o pore_n and_o the_o part_n of_o the_o diaphanous_a body_n be_v little_a the_o light_n must_v be_v but_o little_a that_o find_v the_o same_o passage_n now_o that_o refraction_n be_v great_a or_o lesser_a happen_v two_o way_n for_o it_o be_v either_o when_o one_o diaphanous_a body_n reflect_v light_a at_o more_o angle_n then_o a_o other_o and_o by_o consequence_n in_o a_o great_a extent_n of_o the_o superficies_n or_o else_o when_o one_o body_n reflect_v light_a from_o the_o same_o point_n of_o incidence_n in_o a_o short_a line_n and_o in_o a_o great_a angle_n than_o a_o other_o do_v in_o both_o these_o way_n it_o be_v apparent_a that_o a_o body_n compose_v of_o great_a part_n and_o great_a pore_n exceed_v body_n of_o the_o opposite_a kind_n for_o by_o reason_n that_o in_o the_o first_o kind_n more_o light_a may_v beat_v against_o one_o part_n a_o body_n in_o which_o that_o happen_v will_v make_v a_o appearance_n from_o a_o further_a part_n of_o its_o superficies_n whereas_o in_o a_o body_n of_o the_o other_o sort_n the_o light_n that_o beat_v against_o one_o of_o the_o little_a part_n of_o it_o will_v be_v so_o little_a as_o it_o will_v present_o vanish_v again_o because_o in_o the_o first_o the_o part_n at_o the_o incidence_n be_v great_a the_o surface_n from_o which_o the_o reflection_n be_v make_v inward_n have_v more_o of_o a_o plain_a and_o straight_o superficies_n and_o consequent_o do_v reflect_v at_o a_o great_a angle_n then_o that_o who_o superficies_n have_v more_o of_o incline_v but_o we_o must_v not_o pass_v from_o this_o question_n light_a without_o look_v a_o little_a into_o the_o nature_n of_o those_o body_n in_o which_o refraction_n be_v make_v for_o if_o they_o as_o well_o as_o the_o immediate_a cause_n of_o refraction_n do_v likewise_o favour_v we_o it_o will_v not_o a_o little_a advance_v the_o certainty_n of_o our_o determination_n to_o this_o purpose_n we_o may_v call_v to_o mind_n how_o experience_n show_v we_o that_o great_a refraction_n be_v make_v in_o smoke_n and_o in_o mist_n and_o in_o glass_n and_o in_o thick_a body_v water_n and_o mounseur_fw-fr des_fw-mi cartes_n add_v certain_a oil_n and_o spirit_n or_o strong_a water_n now_o most_o of_o these_o we_o see_v be_v compose_v of_o little_a consistent_a body_n swim_v in_o a_o other_o liquid_a body_n as_o be_v plain_a in_o smoke_n and_o mist_n for_o the_o little_a bubble_n which_o rise_v in_o the_o water_n before_o they_o get_v out_o of_o it_o and_o that_o be_v smoke_n when_o they_o get_v into_o the_o air_n do_v assure_v we_o that_o smoke_n be_v nothing_o else_o but_o a_o company_n of_o little_a round_a body_n swim_v in_o the_o air_n and_o the_o round_a consistence_n of_o water_n upon_o herb_n leaf_n and_o twig_n in_o a_o rind_n or_o dew_n give_v we_o also_o to_o understand_v that_o a_o mist_n be_v likewise_o a_o company_n of_o little_a round_a body_n that_o sometime_o stand_v sometime_o float_v in_o the_o air_n as_o the_o wind_n drive_v they_o our_o very_a eye_n bear_v witness_v to_o we_o that_o the_o thick_a sort_n of_o water_n be_v full_a of_o little_a body_n which_o be_v the_o cause_n of_o their_o not_o be_v clear_a as_o for_o glass_n the_o blow_n of_o it_o convince_v that_o the_o little_a dart_n of_o fire_n which_o pierce_v it_o every_o way_n do_v natural_o in_o the_o melt_a of_o it_o convert_v it_o into_o little_a round_a hollow_a body_n which_o in_o their_o cool_n must_v settle_v into_o part_n of_o the_o like_a figure_n then_o for_o crystal_n and_o other_o transparent_a stone_n which_o be_v find_v in_o cold_a place_n it_o can_v not_o be_v otherwise_o but_o that_o the_o nature_n of_o cold_a pierce_a into_o the_o main_a body_n and_o contract_v every_o little_a part_n in_o itself_o this_o contraction_n must_v needs_o leave_v vacant_a pore_n between_o part_n and_o part_n and_o that_o such_o transparent_a stone_n as_o be_v make_v by_o heat_n have_v the_o like_a effect_n and_o property_n may_v be_v judge_v out_o of_o what_o we_o see_v in_o brick_n and_o tile_n which_o be_v leave_v full_a of_o hole_n by_o the_o operation_n of_o the_o fire_n and_o i_o have_v see_v in_o bone_n that_o have_v lie_v a_o long_a time_n in_o the_o sun_n a_o multitude_n of_o sensible_a little_a pore_n close_o to_o one_o a_o other_o as_o if_o they_o have_v be_v former_o stick_v all_o over_o with_o subtle_a sharp_a needle_n as_o close_o as_o they_o can_v be_v thrust_v in_o by_o one_o other_o the_o chemical_a oil_n and_o spirit_n which_o monsieur_n des_n cartes_n speak_v of_o be_v likely_a to_o be_v of_o the_o same_o composition_n since_o that_o such_o use_n to_o be_v extract_v by_o violent_a fire_n for_o a_o violent_a fire_n be_v make_v by_o the_o conjunction_n of_o many_o ray_n together_o and_o that_o must_v needs_o cause_v great_a pore_n in_o the_o body_n it_o work_v upon_o and_o the_o stick_a nature_n of_o these_o spirit_n be_v capable_a of_o conserve_n they_o out_o of_o all_o these_o observation_n it_o follow_v that_o the_o body_n in_o which_o great_a refraction_n do_v happen_v be_v compound_v as_o we_o have_v say_v of_o great_a part_n and_o great_a pore_n and_o therefore_o by_o only_o take_v light_n to_o be_v
other_o can_v be_v imagine_v unless_o it_o be_v variety_n of_o figure_n but_o that_o can_v not_o be_v admit_v to_o belong_v in_o any_o constant_a manner_n to_o those_o least_o particle_n where_o of_o body_n be_v frame_v as_o though_o determinate_a figure_n be_v in_o every_o degree_n of_o quantity_n due_a to_o the_o nature_n of_o element_n and_o therefore_o the_o element_n will_v conserve_v themselves_o in_o those_o figure_n as_o well_o in_o their_o least_o atom_n as_o in_o massy_a bulk_n for_o see_v how_o these_o little_a part_n be_v shuffle_v together_o without_o any_o order_n and_o that_o all_o liquid_n easy_o join_v and_o take_v the_o figure_n which_o the_o dense_a one_o give_v they_o and_o that_o they_o again_o justle_a one_o a_o other_o do_v crush_v themselves_o into_o new_a shape_n which_o their_o mixture_n with_o the_o liquid_a one_o make_v they_o yield_v the_o more_o easy_o unto_o it_o be_v impossible_a that_o the_o element_n shall_v have_v any_o other_o natural_a figure_n in_o these_o their_o least_o part_n than_o such_o as_o chance_n give_v they_o but_o that_o one_o part_n must_v be_v big_a than_o a_o other_o be_v evident_a for_o the_o nature_n of_o rarity_n and_o density_n give_v it_o the_o first_o of_o they_o cause_v divisibility_n into_o little_a part_n and_o the_o latter_a hinder_v it_o have_v then_o settle_v in_o what_o manner_n the_o element_n may_v be_v vary_v in_o the_o composition_n of_o body_n body_n let_v we_o now_o begin_v our_o mixture_n in_o which_o our_o ground_n to_o work_v upon_o must_v be_v earth_n and_o water_n for_o only_o these_o two_o be_v the_o basis_n of_o permanent_a body_n that_o suffer_v our_o sense_n to_o take_v hold_n of_o they_o and_o that_o submit_v themselves_o to_o trial_n whereas_o if_o we_o shall_v make_v the_o predominant_a element_n to_o be_v air_n or_o fire_n and_o bring_v in_o the_o other_o two_o solid_a one_o under_o their_o jurisdiction_n to_o make_v up_o the_o mixture_n the_o compound_n result_v out_o of_o they_o will_v be_v either_o in_o continual_a consumption_n as_o ordinary_a fire_n be_v or_o else_o imperceptible_a to_o our_o eye_n or_o touch_n and_o therefore_o not_o a_o fit_a subject_n for_o we_o to_o discourse_v of_o since_o the_o other_o two_o afford_v we_o enough_o to_o speculate_v upon_o peradventure_o our_o smell_n may_v take_v some_o cognisance_n of_o a_o body_n so_o compose_v or_o the_o effect_n of_o it_o take_v in_o by_o respiration_n may_v in_o time_n show_v itself_o upon_o our_o health_n but_o it_o concern_v not_o we_o now_o to_o look_v so_o far_o our_o design_n require_v more_o maniable_a substance_n of_o which_o two_o let_v water_n be_v the_o first_o and_o with_o it_o we_o will_v mingle_v the_o other_o three_o element_n in_o excess_n over_o one_o a_o other_o by_o turn_n but_o still_o all_o of_o they_o oversway_v by_o a_o predominant_a quantity_n of_o water_n and_o then_o let_v we_o see_v what_o kind_n of_o body_n will_v result_v out_o of_o such_o proportion_n first_o if_o earth_n prevail_v above_o fire_n and_o air_n and_o arrive_v next_o in_o proportion_n to_o the_o water_n a_o body_n of_o such_o a_o composition_n must_v needs_o prove_v hardly_o liquid_a and_o not_o easy_a to_o let_v its_o part_n run_v a_o sunder_o by_o reason_n of_o the_o great_a proportion_n of_o so_o dense_a a_o body_n as_o earth_n that_o hold_v it_o together_o yet_o some_o inclination_n it_o will_v have_v to_o fluidnesse_n by_o reason_n the_o water_n be_v predominant_a over_o all_o which_o also_o will_v make_v it_o be_v easy_o divisible_a and_o give_v very_o little_a resistance_n to_o any_o hard_a thing_n that_o shall_v be_v apply_v to_o make_v way_n through_o it_o in_o a_o word_n this_o mixture_n make_v the_o constitution_n of_o mud_n dirt_n honey_n butter_n and_o such_o like_a thing_n where_o the_o main_a part_n be_v great_a one_o and_o such_o be_v the_o part_n of_o earth_n and_o water_n in_o themselves_o let_v the_o next_o proportion_n of_o excess_n in_o a_o watery_a compound_n element_n be_v of_o air_n which_o when_o it_o prevail_v it_o incorporate_v itself_o chief_o with_o earth_n for_o the_o other_o element_n will_v not_o so_o well_o retain_v it_o now_o because_o its_o part_n be_v subtle_a by_o reason_n of_o the_o rarity_n it_o have_v and_o stick_v because_o of_o its_o humidity_n it_o drive_v the_o earth_n and_o water_n likewise_o into_o lesser_a part_n the_o result_n of_o such_o a_o mixture_n be_v that_o the_o part_n of_o a_o boby_n compound_v by_o it_o be_v close_o catch_v flow_v slow_o glibbe_n and_o general_o it_o will_v burn_v and_o be_v easy_o convert_v into_o flame_n of_o this_o kind_n be_v those_o which_o we_o call_v oily_a or_o unctuous_a body_n who_o great_a part_n be_v easy_o separate_v that_o be_v they_o be_v easy_o divisible_a in_o bulk_n but_o the_o small_a one_o very_o hardly_o next_o the_o smallnesse_n and_o well_o work_v of_o the_o part_n by_o mean_n of_o the_o air_n penetrate_v every_o dense_a one_o and_o stick_v close_o to_o every_o one_o of_o they_o and_o consequent_o join_v they_o without_o any_o unevennesse_n cause_v that_o there_o can_v be_v no_o ruggedness_n in_o it_o and_o therefore_o it_o be_v glibbe_n in_o like_a manner_n as_o we_o see_v plaster_n or_o starch_v become_v smooth_a when_o they_o be_v well_o wrought_v then_o the_o humidity_n of_o it_o cause_v it_o to_o be_v catck_v and_o the_o shortenesse_n of_o every_o part_n make_v that_o where_o it_o stick_v it_o be_v not_o easy_o part_v thence_o now_o the_o rarity_n of_o air_n next_o unto_o fire_n admit_v it_o to_o be_v of_o all_o the_o other_o element_n most_o easy_o bring_v to_o the_o height_n of_o fire_n by_o the_o operation_n of_o fire_n upon_o it_o and_o therefore_o oil_n be_v the_o proper_a food_n of_o that_o element_n and_o according_o we_o see_v that_o if_o a_o drop_n of_o oil_n be_v spill_v upon_o a_o sheet_n of_o paper_n and_o the_o paper_n be_v set_v on_o fire_n at_o a_o corner_n as_o the_o fire_n come_v near_o the_o oil_n the_o oil_n will_v disperse_v and_o spread_v itself_o upon_o the_o paper_n to_o a_o broad_a compass_n than_o it_o have_v which_o be_v because_o the_o heat_n rarify_v it_o and_o so_o in_o oil_n itself_o the_o fire_n rarify_n the_o air_n make_v it_o penetrate_v the_o earthy_a part_n adjoin_v unto_o it_o more_o than_o it_o do_v and_o so_o subtilise_v they_o till_o they_o be_v reduce_v to_o such_o a_o height_n as_o they_o be_v within_o the_o power_n of_o fire_n to_o communicate_v his_o own_o nature_n unto_o they_o and_o thus_o he_o turn_v they_o into_o fire_n and_o carry_v they_o up_o in_o his_o flame_n element_n but_o if_o fire_n be_v predominant_a over_o earth_n and_o air_n in_o a_o watery_a compound_n it_o make_v the_o body_n so_o proportion_v to_o be_v subtle_a rare_a penetrative_a hot_a in_o operation_n light_n in_o weight_n and_o subject_a to_o burn_v of_o this_o kind_n be_v all_o sort_n of_o wine_n and_o distil_a spirit_n common_o call_v strong_a water_n or_o aquavite_n in_o latin_a aquae_fw-la ardentes_fw-la these_o will_v loose_v their_o virtue_n mere_o by_o remain_v uncover_v in_o the_o air_n for_o fire_n do_v not_o incorporate_v strong_o with_o water_n but_o if_o it_o find_v mean_n raise_v itself_o into_o the_o air_n as_o we_o see_v in_o the_o smoke_n of_o boil_a water_n which_o be_v nothing_o else_o but_o little_a body_n of_o fire_n that_o enter_v into_o the_o water_n do_v rarify_v some_o part_n of_o it_o but_o have_v no_o inclination_n to_o stay_v there_o and_o therefore_o as_o fast_o as_o they_o can_v get_v out_o they_o fly_v away_o but_o the_o humid_a part_n of_o the_o water_n which_o they_o have_v rarify_v be_v of_o a_o stick_a nature_n do_v join_v themselves_o unto_o they_o and_o ascend_v in_o the_o air_n as_o high_a as_o the_o fiery_a atom_n have_v strength_n to_o carry_v they_o which_o when_o it_o fail_v they_o that_o smoke_n fall_v down_o in_o a_o dew_n and_o so_o become_v water_n again_o as_o it_o be_v all_o which_o one_o may_v easy_o discern_v in_o a_o glass_n vessel_n of_o water_n set_v over_o the_o fire_n in_o which_o one_o may_v observe_v the_o fire_n come_v in_o at_o the_o bottom_n and_o present_o swim_v up_o to_o the_o top_n like_o a_o little_a bubble_n and_o immediate_o rise_v from_o thence_o in_o smoke_n and_o that_o will_v at_o last_o convert_v itself_o into_o drop_n and_o settle_v upon_o some_o solid_a substance_n thereabouts_o of_o these_o fiery_a spirit_n some_o be_v so_o subtle_a as_o of_o themselves_o they_o will_v vanish_v and_o leave_v no_o residue_n of_o a_o body_n behind_o they_o and_o alchemisst_n profess_v to_o make_v they_o so_o etherial_a and_o volatile_a that_o be_v pour_v out_o of_o a_o glass_n from_o some_o reasonable_a height_n they_o shall_v never_o reach_v the_o ground_n but_o
quantative_a thing_n by_o which_o the_o element_n be_v diversify_v and_o out_o of_o this_o discourse_n it_o will_v be_v evident_a earth_n that_o these_o complexion_n and_o quality_n though_o in_o diverse_a degree_n must_v of_o necessity_n be_v find_v wheresoever_o there_o be_v any_o variation_n in_o body_n for_o see_v there_o can_v be_v no_o variation_n in_o body_n but_o by_o rarity_n and_o density_n and_o that_o the_o pure_a degree_n of_o rarity_n and_o density_n do_v make_v heat_n cold_a moisture_n and_o dryness_n and_o in_o a_o word_n the_o four_o element_n it_o be_v evident_a that_o wheresoever_o there_o be_v variety_n of_o body_n there_o must_v be_v the_o four_o element_n though_o peradventure_o far_o unlike_o these_o mix_a body_n which_o we_o call_v element_n and_o again_o because_o these_o element_n can_v not_o consist_v without_o motion_n and_o because_o by_o motion_n they_o do_v of_o necessity_n produce_v mix_v body_n and_o forge_v out_o those_o quality_n which_o we_o come_v from_o explicate_v it_o must_v by_o like_a necessity_n follow_v that_o wheresoever_o there_o be_v any_o variety_n of_o active_a and_o passive_a body_n there_o mix_v body_n likewise_o must_v reside_v of_o the_o same_o kind_n and_o be_v endue_v with_o quality_n of_o the_o like_a nature_n as_o those_o we_o have_v treat_v of_o though_o peradventure_o such_o as_o be_v in_o other_o place_n of_o the_o world_n remote_a from_o we_o may_v be_v in_o a_o degree_n far_o different_a from_o we_o since_o then_o it_o can_v not_o be_v deny_v but_o that_o there_o must_v be_v notable_a variety_n of_o active_a and_o passive_a body_n wheresoever_o there_o be_v light_a neither_o can_v it_o be_v deny_v but_o that_o in_o all_o those_o great_a body_n from_o which_o light_n be_v reflect_v unto_o we_o there_o must_v be_v a_o like_a variety_n of_o complexion_n and_o of_o quality_n and_o of_o body_n temper_v by_o they_o as_o we_o find_v here_o in_o the_o orb_n we_o live_v in_o which_o system_v how_o different_a it_o be_v from_o that_o which_o aristotle_n and_o the_o most_o of_o the_o school_n have_v deliver_v we_o as_o well_o in_o the_o evidency_n of_o the_o proof_n for_o its_o be_v so_o as_o in_o the_o position_n and_o model_n of_o it_o i_o leave_v unto_o the_o prudent_a reader_n to_o consider_v and_o judge_v out_o of_o what_o have_v be_v already_o say_v active_a it_o be_v not_o hard_a to_o discover_v in_o what_o manner_n the_o composition_n of_o body_n be_v make_v in_o effect_v of_o which_o the_o main_a hinge_n whereon_o that_o motion_n depend_v be_v fire_n or_o heat_n as_o it_o likewise_o be_v in_o all_o other_o motion_n whatsoever_o now_o because_o the_o composition_n of_o a_o mix_v body_n proceed_v fâ—om_o the_o action_n of_o one_o simple_a body_n or_o element_n upon_o the_o other_o it_o will_v not_o be_v amiss_o to_o declare_v by_o some_o example_n how_o this_o workâ—_n pass_v for_o thâ—t_a purpose_n let_v we_o examine_v how_o fire_n or_o heat_n work_v upon_o his_o fâ—llowes_n by_o what_o wâ—_n have_v former_o deliver_v it_o be_v clear_v that_o fire_n stream_v out_o from_o its_o centre_n and_o diffuse_v itself_o abroad_o so_o as_o to_o fill_v the_o circumference_n of_o a_o large_a circle_n it_o must_v needs_o follow_v that_o the_o beam_n of_o it_o be_v most_o condense_a and_o compact_v together_o near_o the_o centre_n and_o the_o further_o they_o stream_n from_o the_o centre_n the_o more_o thin_a and_o rarify_v they_o must_v grow_v yet_o this_o be_v with_o such_o moderation_n as_o we_o can_v not_o any_o where_o discern_v that_o one_o beam_n do_v not_o touch_v a_o other_o and_o therefore_o the_o distance_n must_v be_v very_o small_a now_o let_v we_o suppose_v that_o fire_n happen_v to_o be_v in_o a_o viscous_a and_o tenacious_a body_n and_o then_o consider_v what_o will_v happen_v in_o this_o case_n of_o one_o side_n the_o fire_n spread_v itself_o abroad_o on_o the_o other_o side_n the_o part_n of_o the_o tenacious_a body_n be_v moist_a as_o we_o have_v former_o determine_v their_o edge_n on_o all_o hand_n will_v stick_v fast_o to_o the_o dry_a beam_n of_o the_o fire_n that_o pass_v between_o they_o then_o they_o stretch_v wide_o and_o wide_a from_o one_o a_o other_o must_v needs_o draw_v with_o they_o the_o part_n of_o that_o tenacious_a body_n which_o stick_v unto_o they_o and_o stertch_v they_o into_o a_o great_a wideness_n or_o largeness_n than_o they_o enjoy_v before_o from_o whence_o it_o follow_v that_o see_v there_o be_v no_o other_o body_n near_o thereabouts_o but_o they_o two_o either_o there_o must_v be_v a_o vacuity_n leave_v or_o else_o the_o tenacious_a body_n must_v hold_v and_o fill_v a_o great_a space_n than_o it_o do_v before_o and_o consequent_o be_v more_o rare_a contrariwise_o if_o any_o of_o the_o other_o element_n be_v strong_a than_o fire_n the_o denser_n element_n break_v off_o from_o their_o continue_a stream_n the_o little_a part_n of_o fire_n which_o be_v get_v into_o their_o great_a part_n and_o stick_v on_o all_o side_n about_o they_o they_o do_v so_o enclose_v they_o that_o they_o have_v no_o more_o semblance_n of_o fire_n and_o if_o afterwards_o by_o any_o accident_n there_o come_v a_o great_a compression_n they_o force_v they_o to_o loose_v their_o natural_a rarity_n and_o to_o become_v some_o other_o element_n thus_o it_o fare_v with_o fire_n both_o in_o act_v and_o in_o suffering_n and_o the_o same_o course_n we_o have_v in_o both_o these_o regard_v express_v of_o it_o pass_v likewise_o in_o the_o rest_n of_o the_o element_n to_o the_o proportion_n of_o their_o contrariety_n hence_o it_o follow_v that_o when_o fire_n meet_v with_o humidity_n in_o any_o body_n it_o divide_v and_o subtilise_v it_o and_o disperse_v it_o gentle_o and_o in_o a_o kind_n of_o equal_a manner_n through_o the_o whole_a body_n it_o be_v in_o if_o the_o operation_n of_o it_o be_v a_o natural_a and_o a_o gentle_a one_o and_o so_o drive_v it_o into_o other_o part_n which_o at_o the_o same_o time_n it_o prepare_v to_o receive_v it_o by_o subtilise_v likewise_o those_o part_n and_o thus_o moderate_a fire_n make_v humour_n in_o very_o small_a part_n to_o incorporate_v itself_o in_o a_o even_a or_o uniform_a manner_n with_o the_o dry_a part_n it_o meet_v withal_o which_o be_v do_v whether_o the_o heat_n do_v afterwards_o continue_v or_o that_o cold_a succee_v in_o lieu_n of_o it_o the_o effect_n must_v of_o necessity_n be_v that_o the_o body_n thus_o compose_v be_v bind_v up_o and_o fasten_v more_o or_o less_o according_a to_o the_o proportion_n of_o the_o matter_n it_o be_v make_v of_o and_o of_o the_o agent_n that_o work_v upon_o it_o and_o of_o the_o time_n they_o employ_v about_o it_o this_o be_v every_o day_n see_v in_o the_o ripen_n of_o fruit_n and_o in_o other_o frequent_a work_n as_o well_o of_o art_n as_o of_o nature_n and_o be_v so_o obvious_a and_o sensible_a to_o any_o reasonable_a observation_n that_o it_o be_v needless_a to_o enlarge_v myself_o much_o upon_o this_o subject_n metal_n only_o it_o will_v not_o be_v amiss_o for_o example_n sake_n to_o consider_v the_o progress_n of_o it_o in_o the_o compose_n or_o augment_v of_o metal_n or_o of_o earth_n of_o diverse_a sort_n first_o heat_n as_o we_o have_v say_v draw_v humour_n out_o of_o all_o the_o body_n it_o work_v upon_o then_o if_o the_o extract_a humour_n be_v in_o quantity_n and_o the_o steame_n of_o it_o do_v happen_v to_o come_v together_o in_o some_o hollow_a place_n fit_a to_o assemble_v they_o into_o great_a part_n they_o be_v condense_v and_o they_o fall_v down_o in_o a_o liquid_a and_o run_a body_n these_o steame_n be_v thus_o corporify_v the_o body_n result_v out_o of_o they_o make_v itself_o in_o the_o earth_n a_o channel_n to_o run_v in_o and_o if_o there_o be_v any_o loose_a part_n in_o the_o channel_n they_o mingle_v themselves_o with_o the_o run_a liquor_n and_o though_o there_o be_v none_o such_o yet_o in_o time_n the_o liquor_n itself_o loosen_v the_o channel_n all_o about_o and_o imbibe_v into_o its_o own_o substance_n the_o part_n it_o raise_v and_o thus_o all_o of_o they_o compact_v together_o do_v roll_n along_o till_o they_o tumble_v into_o some_o low_a place_n out_o of_o which_o they_o can_v not_o so_o easy_o get_v to_o wander_v further_o when_o they_o be_v thus_o settle_v they_o do_v the_o more_o easy_o receive_v into_o they_o and_o retain_v such_o heat_n as_o be_v every_o where_o to_o be_v meet_v withal_o because_o it_o be_v diffuse_v more_o or_o less_o through_o the_o earth_n this_o heat_n if_o it_o be_v sufficient_a digest_v it_o into_o a_o solid_a body_n the_o temper_n of_o cold_a likewise_o concur_v in_o its_o measure_n to_o this_o effect_n and_o according_a to_o the_o variety_n of_o the_o substance_n whereof_o the_o first_o liquor_n be_v make_v
phlegme_n and_o earth_n now_o these_o be_v not_o pure_a and_o simple_a part_n of_o the_o dissolve_a body_n but_o new_o compound_v body_n make_v of_o the_o first_o by_o the_o operation_n of_o heat_n as_o smoke_n be_v not_o pure_a water_n but_o water_n and_o fire_n together_o and_o therefore_o become_v not_o water_n but_o by_o cool_v that_o be_v by_o the_o fire_n fly_v away_o from_o it_o so_o likewise_o those_o spirit_n salt_n oil_n and_o the_o rest_n be_v but_o degree_n of_o thing_n which_o fire_n make_v of_o diverse_a part_n of_o the_o dissolve_a body_n by_o separate_a they_o one_o from_o a_o other_o and_o incorporate_n itself_o with_o they_o and_o so_o they_o be_v all_o of_o they_o compound_v of_o the_o four_o element_n and_o be_v further_a resoluable_a into_o they_o yet_o i_o intend_v not_o to_o say_v that_o there_o be_v not_o original_o in_o the_o body_n before_o its_o dissolution_n some_o loose_a part_n which_o have_v the_o property_n of_o these_o body_n that_o be_v make_v by_o the_o fire_n in_o the_o dissolve_v of_o it_o for_o see_v that_o nature_n work_v by_o the_o like_a instrument_n as_o art_n use_v she_o must_v needs_o in_o her_o excess_n and_o defect_n produce_v like_o body_n to_o what_o art_n do_v in_o dissolution_n which_o operation_n of_o art_n be_v but_o a_o kind_n of_o excess_n in_o the_o progress_n of_o nature_n but_o my_o meaning_n be_v that_o in_o such_o dissolution_n there_o be_v more_o of_o these_o part_n make_v by_o the_o work_n of_o fire_n then_o be_v in_o the_o body_n before_o now_o because_o this_o be_v the_o natural_a and_o most_o ordinary_a dissolution_n of_o thing_n let_v we_o see_v in_o particular_a how_o it_o be_v do_v suppose_v then_o that_o fire_n be_v in_o a_o convenient_a manner_n apply_v to_o a_o body_n that_o have_v all_o sort_n of_o part_n in_o it_o and_o our_o own_o discourse_n will_v tell_v we_o that_o the_o first_o effect_n it_o work_v will_v be_v that_o as_o the_o subtle_a part_n of_o fire_n do_v divide_v and_o pass_v through_o that_o body_n they_o will_v adhere_v to_o the_o most_o subtle_a part_n in_o it_o which_o be_v most_o agile_a and_o least_o bind_v and_o incorporate_v to_o the_o bowel_n of_o the_o body_n and_o lie_v as_o it_o be_v loose_o scatter_v in_o it_o the_o fire_n will_v carry_v they_o away_o with_o it_o thâ—se_o will_v be_v the_o first_o that_o be_v separate_v from_o the_o main_a body_n which_o be_v retain_v in_o a_o fit_a receiver_n will_v by_o the_o coldness_n of_o the_o circumdant_fw-la air_n grow_v outward_o cool_v themselves_o and_o become_v first_o a_o dew_n upon_o the_o side_n of_o the_o glass_n and_o then_o still_o as_o they_o grow_v cool_a condense_a more_o and_o more_o till_o at_o the_o length_n they_o fall_v down_o congeal_v into_o a_o palpable_a liquor_n which_o be_v compose_v as_o you_o see_v of_o the_o hot_a part_n of_o the_o body_n mingle_v with_o the_o fire_n that_o carry_v they_o out_o and_o therefore_o this_o liquor_n be_v very_o inflammable_a and_o easy_o turn_v into_o actual_a fire_n as_o you_o see_v all_o spirit_n and_o aquae_fw-la ardentes_fw-la of_o vegetable_n be_v the_o hot_a and_o loose_a part_n be_v extract_v and_o the_o fire_n continue_v and_o increase_n those_o that_o will_v follow_v next_o be_v such_o as_o though_o they_o be_v not_o of_o themselves_o loose_a yet_o be_v easy_a to_o be_v make_v so_o and_o be_v therefore_o most_o separable_a these_o must_v be_v humid_a and_o those_o little_a dry_a part_n which_o be_v incorporate_v with_o the_o overflow_a humid_a one_o in_o they_o for_o no_o part_n that_o we_o can_v arrive_v unto_o be_v of_o one_o pure_a simple_a nature_n but_o all_o be_v mix_v and_o compose_v of_o the_o 4_o element_n in_o some_o proportion_n must_v be_v hold_v together_o with_o such_o gross_a glue_v as_o the_o fire_n may_v easy_o penetrate_v and_o separate_v they_o and_o then_o the_o humid_a part_n divide_v into_o little_a atom_n do_v stick_v to_o the_o lesser_a one_o of_o the_o fire_n which_o by_o their_o multitude_n of_o number_n and_o velocity_n of_o motion_n supply_v what_o they_o want_v of_o they_o in_o bulk_n do_v carry_v they_o away_o with_o they_o and_o thus_o these_o phlegmatic_a part_n fly_v up_o with_o the_o fire_n and_o be_v afterwards_o congeal_v into_o a_o insipid_a water_n which_o if_o it_o have_v any_o savour_n be_v because_o the_o first_o ardent_a spirit_n be_v not_o total_o separate_v from_o it_o but_o some_o few_o of_o they_o remain_v in_o it_o and_o give_v some_o little_a life_n to_o the_o whole_a body_n of_o that_o otherwise_o flat_a liquor_n now_o those_o part_n which_o the_o fire_n separate_v next_o from_o the_o remain_a body_n after_o the_o fiery_a and_o watery_a one_o be_v carry_v away_o must_v be_v such_o as_o it_o can_v work_v upon_o and_o therefore_o must_v abound_v in_o humidity_n but_o since_o they_o stir_v not_o till_o the_o watery_a one_o be_v go_v it_o be_v evident_a that_o they_o be_v compose_v of_o many_o dry_a part_n strong_o incorporate_v and_o very_o subtile_o mix_v with_o the_o moist_a one_o and_o that_o both_o of_o they_o be_v exceed_o small_a and_o be_v so_o close_o and_o fine_o knit_v together_o that_o the_o fire_n have_v much_o ado_n to_o get_v between_o they_o and_o cut_v the_o thridde_n that_o tie_v they_o together_o and_o therefore_o they_o require_v a_o very_a great_a force_n of_o fire_n to_o carry_v they_o up_o now_o the_o composition_n of_o these_o show_v they_o to_o be_v aerial_a and_o together_o with_o the_o fire_n that_o be_v mingle_v with_o they_o they_o congeal_v into_o that_o consistence_n which_o we_o call_v oil_n last_o it_o can_v not_o be_v otherwise_o but_o that_o the_o fire_n in_o all_o this_o while_n of_o continual_a application_n to_o the_o body_n it_o thus_o anatomise_v have_v harden_v and_o as_o it_o be_v roast_v some_o part_n into_o such_o greatness_n and_o dryness_n as_o they_o will_v not_o fly_v nor_o can_v be_v carry_v up_o with_o any_o moderate_a heat_n but_o great_a quantity_n of_o fire_n be_v mingle_v with_o the_o subtle_a part_n of_o his_o bake_a earth_n make_v they_o very_o pungent_a and_o acrimonious_a in_o taste_n so_o that_o they_o be_v of_o the_o nature_n of_o ordinary_a salt_n and_o be_v so_o call_v and_o by_o the_o help_n of_o water_n may_v easy_o be_v separate_v from_o the_o more_o gross_a part_n which_o then_o remain_v a_o dead_a and_o useless_a earth_n by_o this_o discourse_n it_o be_v apparent_a that_o fire_n have_v be_v the_o instrument_n which_o have_v wrought_v all_o these_o part_n of_o a_o entire_a body_n into_o the_o form_n they_o be_v in_o for_o while_o it_o carry_v away_o the_o fiery_a part_n it_o swell_v the_o watery_a one_o and_o while_o it_o lift_v up_o they_o it_o digest_v the_o aerial_a part_n and_o while_o it_o drive_v up_o the_o oil_n it_o bake_v the_o earth_n and_o salt_n again_o all_o these_o retain_v for_o the_o most_o part_n the_o proper_a nature_n of_o the_o substance_n from_o whence_o they_o be_v extract_v it_o be_v evident_a that_o the_o substance_n be_v not_o dissolve_v for_o so_o the_o nature_n of_o the_o whole_a will_v be_v dissolve_v and_o quite_o destroy_v and_o extinguish_v in_o every_o part_n but_o that_o only_a some_o part_n contain_v the_o whole_a substance_n or_o rather_o the_o nature_n of_o the_o whole_a substance_n in_o they_o be_v separate_v from_o other_o part_n that_o have_v likewise_o the_o same_o nature_n in_o they_o the_o three_o instrument_n damnata_fw-la for_o the_o separation_n and_o dissolution_n of_o body_n be_v water_n who_o proper_a matter_n to_o work_v upon_o be_v salt_n and_o it_o serve_v to_o supply_v what_o the_o fire_n can_v not_o perform_v which_o be_v the_o separation_n of_o the_o salt_n from_o the_o earth_n in_o calcine_v body_n all_o the_o other_o part_n fire_n be_v able_a to_o sever_v but_o in_o these_o he_o have_v so_o bake_v the_o little_a humidity_n he_o have_v leave_v in_o they_o with_o their_o much_o earth_n as_o he_o can_v not_o divide_v they_o any_o further_a and_o so_o though_o he_o incorporate_v himself_o with_o they_o yet_o he_o can_v carry_v nothing_o away_o with_o he_o if_o then_o pure_a water_n be_v put_v upon_o that_o chalk_n the_o subtle_a dry_a part_n of_o it_o do_v easy_o join_v to_o the_o superuenient_a moisture_n and_o stick_v close_o to_o it_o do_v draw_v it_o down_o to_o they_o but_o because_o they_o be_v the_o light_a it_o happen_v to_o they_o as_o when_o a_o man_n in_o a_o boat_n pull_v the_o land_n to_o he_o that_o come_v not_o to_o he_o but_o he_o remove_v himself_o and_o his_o boat_n to_o it_o so_o these_o ascend_v in_o the_o water_n as_o they_o dissolve_v and_o the_o water_n more_o and_o more_o penetrate_v they_o and_o by_o addition_n of_o its_o part_n make_v the_o humidity_n which_o
glew_v their_o earthy_a part_n together_o great_a and_o great_a do_v make_v a_o wide_a and_o wide_a separation_n between_o those_o little_a earthy_a part_n and_o so_o imbu_v the_o whole_a body_n of_o the_o water_n with_o they_o into_o which_o they_o be_v disperse_v in_o little_a atom_n those_o that_o be_v of_o big_a bulk_n remain_v low_a in_o the_o water_n and_o in_o the_o same_o measure_n as_o their_o quantity_n dissolve_v into_o less_o and_o less_o they_o ascend_v high_a and_o high_o in_o the_o water_n till_o at_o the_o length_n the_o water_n be_v full_o replenish_v with_o they_o and_o they_o be_v diffuse_v through_o the_o whole_a body_n of_o it_o while_o the_o more_o gross_a and_o heavy_a earthy_a part_n have_v nothing_o in_o they_o to_o make_v a_o present_a combination_n between_o they_o and_o the_o water_n do_v fall_v down_o to_o the_o bottom_n and_o settle_v under_o the_o water_n in_o dust_n in_o which_o because_o earth_n alone_o do_v predominate_v in_o a_o very_a great_a excess_n we_o can_v expect_v no_o other_o virtue_n to_o be_v in_o it_o but_o that_o which_o be_v proper_a to_o mere_a earth_n to_o wit_n dryness_n and_o weight_n which_o ordinary_a alchemisst_n look_v not_o after_o and_o therefore_o call_v it_o terra_fw-la damnata_fw-la but_o other_o find_v a_o fix_v quality_n in_o it_o by_o which_o they_o perform_v very_o admirable_a operation_n now_o if_o you_o pour_v the_o impregnated_a water_n from_o the_o terra_fw-la damnata_fw-la and_o then_o evaporate_v it_o you_o will_v find_v a_o pure_a white_a substance_n remain_v which_o by_o its_o bulk_n show_v itself_o to_o be_v very_o earthy_a and_o by_o its_o prick_n and_o corrosive_n taste_n will_v inform_v you_o much_o fire_n be_v in_o it_o and_o by_o its_o easy_a dissolution_n in_o a_o moist_a place_n that_o water_n have_v a_o great_a share_n in_o the_o production_n of_o it_o and_o thus_o the_o salte_n of_o body_n be_v make_v and_o extract_v body_n now_o as_o water_n do_v dissolve_v salt_n so_o by_o the_o incorporation_n and_o virtue_n of_o that_o corrosive_n substance_n it_o do_v more_o than_o salt_n itself_o can_v do_v for_o have_v get_v acrimony_n and_o more_o weight_n by_o the_o mixture_n and_o dissolution_n of_o salt_n in_o it_o it_o make_v itself_o a_o way_n into_o solid_a body_n even_o into_o metal_n as_o we_o see_v in_o brass_n and_o iron_n which_o be_v easy_o rust_v by_o salt_n dissolve_v upon_o they_o and_o according_a as_o the_o salte_n be_v strong_a so_o this_o corrosive_n virtue_n increase_v in_o they_o even_o so_o much_o as_o neither_o silver_n nor_o gold_n be_v free_a from_o their_o eat_a quality_n but_o they_o as_o well_o as_o the_o rest_n be_v divide_v into_o most_o small_a part_n and_o be_v make_v to_o swim_v in_o water_n in_o such_o sort_n as_o we_o have_v explicate_v above_o and_o whereof_o every_o ordinary_a alchemist_n teach_v the_o practice_n but_o this_o be_v not_o all_o salt_n do_v help_v as_o well_o to_o melt_v hard_a body_n and_o metal_n as_o to_o corrode_v they_o for_o some_o fusible_a salt_n flow_v upon_o they_o by_o the_o heat_n of_o the_o fire_n and_o other_o dissolve_v by_o the_o stream_n of_o the_o mettle_n that_o incorporate_v with_o they_o as_o soon_o as_o they_o be_v in_o flux_n they_o mingle_v with_o the_o natural_a juice_n of_o the_o mettle_n and_o penetrate_v they_o deep_o then_o without_o they_o the_o fire_n can_v do_v and_o swell_v they_o and_o make_v they_o fit_a to_o run_v cause_v these_o be_v the_o principal_a way_n of_o the_o two_o last_o instrument_n in_o dissolve_v of_o body_n take_v each_o of_o they_o by_o itself_o but_o there_o remain_v one_o more_o of_o very_o great_a importance_n as_o well_o in_o the_o work_n of_o nature_n as_o of_o art_n in_o which_o both_o the_o former_a be_v join_v and_o do_v concure_a and_o that_o be_v putrefraction_n who_o way_n of_o work_v be_v by_o gentle_a heat_n and_o moisture_n to_o wet_v and_o pierce_v the_o body_n it_o work_v upon_o whereby_o it_o be_v make_v to_o swell_v and_o the_o hot_a part_n of_o it_o be_v loosen_v they_o be_v at_o length_n drink_v up_o and_o drown_v in_o the_o moist_a one_o from_o whence_o by_o fire_n they_o be_v easy_o separate_v as_o we_o have_v already_o declare_v and_o those_o moist_a part_n afterwards_o leave_v it_o the_o substance_n remain_v dry_a and_o fall_v in_o piece_n for_o want_v of_o the_o glue_v that_o hold_v it_o together_o the_o sixteen_o chapter_n a_o explication_n of_o certain_a maxim_n touch_v the_o operation_n and_o quality_n of_o body_n and_o whether_o the_o element_n be_v find_v pure_a in_o any_o part_n of_o the_o world_n out_o of_o what_o we_o have_v determine_v agent_n concern_v the_o natural_a action_n of_o body_n in_o their_o make_n and_o destroy_v one_o a_o other_o it_o be_v easy_a to_o understand_v the_o right_a meaning_n of_o some_o term_n and_o the_o true_a reason_n of_o some_o maxim_n much_o use_v in_o the_o school_n as_o first_o when_o philosopher_n attribute_v unto_o all_o sort_n of_o corporeal_a agent_n a_o sphere_n of_o activity_n the_o sense_n of_o that_o manner_n of_o expression_n in_o fire_n appear_v plain_o by_o what_o we_o have_v already_o declare_v of_o the_o nature_n and_o manner_n of_o operation_n of_o that_o element_n and_o in_o like_a manner_n if_o we_o consider_v how_o the_o force_n of_o cold_a consist_v in_o a_o compression_n of_o the_o body_n that_o be_v make_v cold_a we_o may_v preceive_v that_o if_o in_o the_o cool_v body_n there_o be_v any_o subtle_a part_n which_o can_v break_v forth_o from_o the_o rest_n such_o compression_n will_v make_v they_o do_v so_o especial_o if_o the_o compression_n be_v of_o little_a part_n of_o the_o compress_a body_n within_o themselves_o as_o well_o as_o of_o the_o outward_a bulk_n of_o the_o whole_a body_n round_o about_o for_o at_o first_o the_o compression_n of_o such_o cause_v in_o the_o body_n where_o they_o be_v little_a hole_n or_o pore_n in_o the_o place_n they_o be_v compress_v and_o drive_v from_o which_o pore_n they_o fill_v up_o when_o they_o be_v dilate_v at_o their_o own_o natural_a liberty_n but_o be_v thus_o forcible_o shrink_v up_o into_o less_o room_n afterwards_o they_o squeeze_v again_o out_o of_o their_o crowd_n all_o such_o very_a loose_a and_o subtle_a part_n reside_v till_o then_o with_o they_o as_o can_v find_v their_o way_n out_o from_o among_o they_o and_o these_o subtle_a part_n that_o thus_o be_v deliver_v from_o the_o cold_n compression_n get_v first_o into_o the_o pore_n that_o we_o have_v show_v be_v make_v by_o this_o compression_n but_o they_o can_v not_o long_o stay_v there_o for_o the_o atom_n of_o advenient_a cold_a that_o obsesse_v the_o compress_a body_n do_v likewise_o with_o all_o their_o force_n throng_v into_o those_o pore_n and_o soon_o drive_v out_o the_o subtle_a guest_n they_o find_v there_o because_o they_o be_v more_o in_o number_n big_a in_o bulk_n and_o more_o violent_a in_o their_o course_n then_o they_o who_o therefore_o must_v yield_v unto_o they_o the_o little_a channel_n and_o capacity_n they_o former_o take_v up_o out_o of_o which_o they_o be_v thrust_v with_o such_o a_o impetuosity_n that_o they_o spin_v from_o they_o with_o a_o vehemence_n as_o quicksilver_n do_v through_o leather_n when_o to_o purify_v it_o or_o to_o bring_v a_o amalgame_n to_o a_o due_a consistence_n it_o be_v strain_v through_o the_o side_n of_o it_o now_o these_o shower_n or_o stream_n of_o atom_n issue_v from_o the_o compress_a body_n be_v on_o all_o side_n round_o about_o it_o at_o exceed_v little_a distance_n because_o the_o pore_n out_o of_o which_o they_o be_v drive_v be_v so_o likewise_o and_o consequent_o there_o they_o remain_v round_o about_o besiege_v it_o as_o though_o they_o will_v return_v to_o their_o original_a home_n as_o soon_o as_o the_o usurp_a stranger_n that_o be_v too_o powerful_a for_o they_o will_v give_v they_o leave_v and_o according_a to_o the_o multitude_n of_o they_o and_o to_o the_o force_n with_o which_o they_o be_v drive_v out_o the_o compass_n they_o take_v up_o round_o about_o the_o compress_a body_n be_v great_a or_o lesser_a which_o besiege_v atom_n be_v not_o so_o soon_o carry_v away_o by_o any_o exterior_a and_o accidental_a cause_n but_o they_o be_v supply_v by_o new_a emanation_n succeed_v they_o out_o of_o the_o say_v compress_v body_n now_o this_o which_o we_o have_v declare_v by_o the_o example_n of_o cold_a compress_v a_o particular_a body_n happen_v in_o all_o body_n wheresoever_o they_o be_v in_o the_o world_n for_o this_o be_v the_o unavoidable_a effect_n of_o heat_n and_o of_o cold_a wheresoever_o they_o reside_v which_o be_v the_o active_a quality_n by_o who_o mean_n not_o only_a fire_n and_o water_n and_o the_o other_o two_o element_n but_o all_o other_o mix_v body_n compose_v of_o the_o
break_v and_o divide_v they_o into_o lesser_a atom_n and_o so_o bring_v some_o of_o they_o into_o the_o state_n of_o fire_n which_o you_o may_v remember_v be_v nothing_o else_o but_o a_o body_n bring_v into_o such_o a_o degree_n of_o littleness_n and_o rarity_n of_o its_o part_n and_o this_o be_v the_o reason_n why_o such_o hard_a and_o dry_a body_n as_o have_v a_o unctuous_a substance_n in_o they_o be_v by_o motion_n either_o easy_o set_v on_o fire_n or_o at_o the_o least_o fire_n be_v easy_o get_v out_o of_o they_o as_o happen_v in_o flinte_n and_o in_o diverse_a other_o stone_n which_o yield_v fire_n when_o they_o be_v strike_v and_o if_o present_o after_o you_o smell_v unto_o they_o you_o shall_v perceive_v a_o odour_n of_o brimstone_n and_o of_o burn_v which_o be_v a_o certain_a sign_n that_o the_o motion_n do_v convert_v into_o fire_n the_o natural_a brimstone_n that_o be_v mingle_v with_o the_o flint_n and_o who_o denser_n part_n be_v grow_v cold_a and_o so_o stick_v to_o the_o stone_n and_o in_o like_a manner_n the_o ivywood_n and_o diverse_a other_o as_o also_o the_o indian_a cane_n which_o from_o thence_o be_v call_v firecane_n be_v rub_v with_o some_o other_o stick_n of_o the_o same_o nature_n if_o they_o be_v first_o very_o dry_a will_v of_o themselves_o set_v on_o fire_n and_o the_o like_a will_v happen_v to_o coach_n wheel_n in_o summer_n if_o they_o be_v overheat_v with_o motion_n to_o conclude_v our_o discourse_n of_o rarefaction_n rarefaction_n we_o may_v look_v a_o little_a into_o the_o power_n and_o efficacity_n of_o it_o which_o be_v no_o where_o to_o be_v see_v so_o clear_o as_o in_o fire_n and_o as_o fire_n be_v the_o general_a cause_n of_o rarefaction_n so_o be_v it_o of_o all_o body_n that_o which_o be_v most_o rarify_v and_o therefore_o it_o be_v no_o marvel_n if_o its_o effect_n be_v the_o great_a that_o be_v in_o nature_n see_v it_o be_v the_o proper_a operation_n of_o the_o most_o active_a element_n the_o wonderful_a force_n of_o it_o we_o daily_o see_v in_o thunder_n in_o gun_n in_o granado_n and_o in_o mine_n of_o which_o continual_a experience_n as_o well_o as_o several_a history_n wittness_v little_o less_o than_o miracle_n leave_v they_o to_o the_o remarke_n of_o curious_a person_n we_o will_v only_o look_v into_o the_o way_n by_o which_o so_o main_a effect_n do_v proceed_v from_o cause_n that_o appear_v so_o slender_a it_o be_v evident_a that_o fire_n as_o we_o have_v say_v before_o dilate_v itself_o spherical_o as_o nature_n show_v we_o manifest_o in_o bubble_n of_o boil_a water_n and_o of_o mike_a and_o general_o of_o such_o substance_n as_o be_v of_o a_o viscous_a composition_n for_o those_o bubble_n be_v round_o do_v assure_v we_o that_o the_o cause_n which_o make_v they_o do_v equal_o dilate_v they_o from_o the_o centre_n unto_o all_o part_n now_o then_o remember_v the_o infinite_a multiplication_n which_o be_v in_o fire_n we_o may_v conceive_v that_o when_o a_o grain_n of_o gunnepouder_n be_v turn_v thereinto_o there_o be_v so_o many_o little_a bubble_n of_o a_o viscous_a substance_n one_o back_v a_o other_o with_o great_a celerity_n as_o there_o be_v part_n of_o fire_n more_o than_o there_o be_v of_o gunnepouder_n and_o if_o we_o make_v a_o computation_n of_o the_o number_n and_o of_o the_o celerity_n of_o these_o bubble_n we_o shall_v find_v that_o although_o every_o one_o of_o they_o single_a do_v seem_v to_o be_v of_o a_o inconsiderable_a force_n yet_o the_o whole_a number_n of_o they_o together_o will_v exceed_v the_o resistance_n of_o the_o body_n move_v or_o break_v by_o they_o especial_o if_o we_o note_v that_o when_o hard_a substance_n have_v not_o time_n allow_v they_o to_o yield_v they_o break_v the_o soon_o and_o then_o we_o shall_v not_o so_o much_o admire_v the_o extremity_n we_o see_v act_v by_o these_o mean_n thus_o have_v look_v into_o the_o nature_n of_o rarefaction_n and_o trace_v the_o progress_n of_o it_o from_o the_o motion_n of_o the_o sun_n and_o fire_n heat_n in_o the_o next_o place_n we_o be_v to_o examine_v the_o nature_n of_o condensation_n and_o we_o shall_v oftentimes_o find_v it_o likewise_o a_o effect_n of_o the_o same_o cause_n otherwise_o work_v for_o there_o be_v two_o different_a way_n to_o dry_v any_o wet_a thing_n the_o one_o by_o take_v away_o that_o juice_n which_o make_v a_o body_n liquid_a the_o other_o by_o put_v more_o drought_n to_o the_o wet_a body_n that_o it_o may_v imbibe_n the_o moisture_n this_o latter_a way_n do_v as_o well_o as_o the_o former_a condense_a a_o body_n for_o by_o the_o close_o stick_v of_o wet_a to_o dry_v the_o most_o part_n of_o condensation_n be_v effect_v in_o compound_a body_n the_o first_o of_o these_o way_n do_v proper_o and_o immediate_o proceed_v from_o heat_n for_o heat_n enter_v into_o a_o body_n incorporate_v itself_o with_o the_o moist_a and_o viscous_a part_n it_o find_v there_o as_o purge_v medicine_n do_v with_o the_o humour_n they_o work_v upon_o which_o when_o the_o stomach_n can_v no_o long_o entertain_v by_o reason_n of_o their_o unruly_a motion_n in_o wrestle_v together_o they_o be_v both_o eject_v grapple_v with_o one_o a_o other_o and_o the_o place_n of_o their_o contention_n be_v thus_o by_o the_o superuenience_n of_o a_o guest_n of_o a_o contrary_a nature_n that_o will_v not_o stay_v long_o there_o purge_v from_o the_o superaboundance_n of_o the_o former_a one_o that_o annoy_v it_o even_o so_o the_o fire_n that_o be_v greedy_o drink_v up_o by_o the_o watery_a and_o viscous_a part_n of_o a_o compound_a body_n and_o who_o activity_n and_o restless_a nature_n will_v not_o endure_v to_o be_v long_o imprison_v there_o quick_o pierce_v quite_o through_o â—he_n body_n it_o enter_v into_o and_o after_o a_o while_n stream_v out_o at_o the_o opposite_a side_n as_o fast_o as_o it_o enter_v on_o the_o side_n next_o to_o it_o and_o carry_v away_o with_o it_o those_o glewy_a part_n it_o be_v incorporate_v with_o and_o by_o their_o absence_n leave_v the_o body_n they_o part_v from_o dry_a than_o at_o the_o first_o it_o be_v which_o course_n we_o may_v observe_v in_o sirupe_n that_o be_v boil_a to_o a_o consistence_n and_o in_o broth_n that_o be_v consume_v unto_o a_o jelly_n over_o which_o while_o they_o be_v make_v by_o the_o fire_n under_o they_o you_o see_v a_o great_a steam_n which_o be_v the_o watery_a part_n that_o be_v incorporate_v with_o fire_n fly_v away_o in_o smoke_n likewise_o when_o the_o sea_n water_n be_v condense_v into_o salt_n you_o see_v it_o be_v a_o effect_n of_o the_o sun_n or_o fire_n that_o exhale_v or_o boil_v away_o all_o the_o palpable_a moisture_n and_o so_o when_o wet_a clothes_n be_v hang_v either_o in_o the_o sun_n or_o at_o the_o fire_n we_o see_v a_o smoke_n about_o the_o clothes_n and_o heat_n within_o they_o which_o be_v all_o draw_v out_o from_o they_o they_o become_v dry_a and_o this_o deserve_v a_o particular_a note_n that_o although_o they_o shall_v be_v not_o quite_o dry_a when_o you_o take_v they_o from_o the_o fire_n yet_o by_o than_o they_o be_v cool_v they_o will_v be_v dry_a for_o the_o fire_n that_o be_v in_o they_o when_o they_o be_v remove_v from_o the_o main_a stock_n of_o fire_n fly_v away_o carry_v with_o it_o the_o moisture_n that_o be_v incorporate_v with_o it_o and_o therefore_o while_o they_o be_v hot_a that_o be_v while_o the_o fire_n be_v in_o they_o they_o must_v also_o be_v moist_a because_o the_o fire_n and_o the_o moisture_n be_v grow_v to_o be_v one_o body_n and_o can_v not_o become_v through_o dry_a with_o that_o measure_n of_o fire_n for_o more_o will_v have_v dry_v they_o even_o while_o they_o where_o hot_a until_o they_o be_v also_o grow_v through_o cold_a and_o in_o like_a manner_n sirupe_n hydromel_n jelly_n and_o the_o like_a grow_v much_o thick_a after_o they_o be_v take_v off_o from_o the_o fire_n than_o they_o be_v upon_o the_o fire_n and_o much_o of_o their_o humidity_n fly_v away_o with_o the_o fire_n in_o their_o cool_n whereby_o they_o lessen_v much_o of_o their_o quantity_n even_o after_o the_o outward_a fire_n have_v cease_v from_o work_v upon_o they_o now_o if_o the_o moist_a part_n that_o remain_v after_o the_o dry_n be_v by_o the_o heat_n well_o incorporate_v in_o the_o dry_a part_n and_o so_o do_v occasion_n the_o dry_a part_n to_o stick_v close_o together_o then_o that_o body_n be_v condense_v and_o will_v to_o the_o proportion_n of_o it_o be_v heavy_a in_o a_o less_o bulk_n as_o we_o see_v that_o metal_n be_v heavy_a than_o stone_n although_o this_o effect_n be_v in_o these_o example_n wrought_v by_o heat_n cold_a yet_o general_o speak_v it_o be_v more_o proper_a to_o cold_a which_o be_v the_o second_o way_n of_o dry_v a_o moist_a body_n as_o
the_o want_n of_o a_o continual_a sucker_n but_o if_o the_o nose_n of_o that_o arm_n that_o hang_v out_o of_o the_o water_n be_v but_o even_o with_o the_o water_n then_o the_o water_n will_v stand_v still_o in_o both_o pipe_n or_o arm_n of_o the_o syphon_n after_o they_o be_v fill_v with_o suck_v but_o if_o by_o the_o run_v out_o of_o the_o water_n the_o outward_a pipe_n do_v grow_v short_a than_o to_o reach_v as_o low_o as_o the_o superficies_n of_o the_o water_n in_o the_o fountain_n from_o whence_o it_o run_v in_o this_o case_n the_o water_n in_o each_o arm_n of_o the_o syphon_n will_v run_v back_o into_o the_o fountain_n withal_o it_o be_v to_o be_v note_v that_o though_o the_o arm_n which_o be_v out_o of_o the_o water_n be_v never_o so_o long_o yet_o if_o it_o reach_v not_o low_a than_o the_o superficies_n of_o the_o fountain_n the_o over_o quantity_n and_o weight_n of_o the_o water_n there_o more_o than_o in_o the_o other_o arm_n help_v it_o nothing_o to_o make_v it_o run_v out_o which_o be_v because_o the_o declivity_n of_o the_o other_o arm_n overrecompence_v this_o overweight_n not_o that_o the_o weight_n in_o the_o short_a pipe_n have_v so_o much_o force_n as_o the_o weight_n in_o the_o long_a pipe_n but_o because_o it_o have_v more_o force_n than_o the_o great_a weight_n do_v exercise_v there_o in_o its_o run_n for_o the_o great_a part_n of_o its_o force_n tend_v a_o other_o way_n then_o to_o the_o end_n of_o the_o pipe_n to_o wit_n perpendicular_o towards_o the_o centre_n and_o so_o be_v hinder_v from_o effect_n by_o the_o great_a slope_v or_o little_a declivity_n of_o the_o pipe_n upon_o which_o it_o lean_v but_o some_o consider_v how_o the_o water_n that_o be_v in_o the_o long_a arm_n of_o the_o syphon_n be_v more_o in_o quantity_n then_o the_o water_n that_o be_v in_o the_o other_o arm_n of_o it_o whereat_o it_o run_v out_o orb_n do_v admire_v why_o the_o great_a quantity_n of_o water_n do_v not_o draw_v back_o the_o less_o into_o the_o cistern_n but_o suffer_v itself_o to_o be_v lift_v up_o and_o drayn_v away_o as_o if_o it_o run_v steep_o downwards_o and_o they_o imagine_v that_o hence_o may_v be_v deduce_v that_o the_o part_n of_o water_n in_o the_o cistern_n do_v not_o weigh_v as_o long_o as_o they_o be_v within_o the_o orb_n of_o their_o own_o body_n unto_o when_o we_o answer_v that_o they_o shall_v consider_v how_o that_o to_o have_v the_o great_a quantity_n of_o water_n which_o be_v in_o the_o long_a arm_n of_o the_o syphon_fw-mi which_o arm_n be_v immerse_v in_o the_o water_n of_o the_o cistern_n to_o draw_v back_o into_o the_o cistern_n the_o water_n which_o be_v in_o the_o other_o arm_n of_o the_o syphon_n that_o hang_v out_o in_o the_o air_n it_o must_v both_o raise_v as_o much_o of_o the_o water_n of_o the_o cistern_n as_o its_o own_o bulk_n be_v above_o the_o level_n which_o at_o present_a the_o whole_a bulk_n of_o water_n have_v and_o withal_o it_o must_v at_o the_o same_o time_n pull_v up_o the_o water_n which_o be_v in_o the_o other_o arm_n now_o it_o be_v manifest_a that_o these_o two_o quantity_n of_o water_n together_o be_v heavy_a than_o the_o water_n in_o the_o sink_a arm_n of_o the_o syphon_n since_o one_o of_o they_o single_a be_v equal_a unto_o it_o and_o by_o consequence_n the_o more_o water_n in_o the_o sink_a arm_n can_v not_o weigh_v back_o the_o less_o water_n in_o the_o hang_a arm_n since_o that_o to_o do_v that_o it_o must_v at_o the_o same_o time_n weigh_v up_o over_o and_o above_o as_o much_o more_o in_o the_o cistern_n as_o itself_o weigh_v but_o turn_v the_o argument_n i_o say_v that_o if_o once_o the_o arm_n of_o the_o syphon_n that_o be_v in_o the_o air_n be_v suppose_v to_o draw_v any_o water_n be_v it_o never_o so_o little_a out_o of_o the_o cistern_n whether_o occasion_v by_o suck_v or_o by_o whatsoever_o other_o mean_n it_o follow_v that_o as_o much_o water_n as_o be_v draw_v up_o above_o the_o level_a of_o the_o whole_a bulk_n in_o the_o cistern_n must_v needs_o press_v into_o the_o suncken_a arm_n from_o the_o next_o adjacent_a part_n that_o be_v from_o the_o bottom_n to_o supply_v its_o empty_n and_o as_o much_o must_v of_o itself_o press_v down_o from_o above_o according_a to_o its_o natural_a course_n when_o nothing_o violent_v it_o to_o rest_v in_o the_o place_n that_o the_o ascend_a water_n which_o be_v low_o than_o it_o leave_v at_o liberty_n for_o it_o to_o take_v possession_n of_o and_o then_o it_o can_v not_o be_v doubt_v but_o that_o this_o descend_a water_n have_v all_o its_o weight_n in_o press_v down_o apply_v to_o drive_v up_o the_o rise_a water_n in_o the_o sink_a arm_n of_o the_o syphon_n and_o the_o water_n in_o the_o other_o arm_n of_o the_o syphon_n without_o have_v all_o its_o weight_n in_o run_v out_o apply_v at_o the_o same_o time_n to_o draw_v up_o the_o same_o water_n in_o the_o sink_a arm_n this_o single_a resistant_n must_v yield_v to_o their_o double_a and_o master_a force_n and_o consequent_o the_o water_n in_o the_o arm_n of_o the_o syphon_n that_o be_v in_o the_o air_n must_v needs_o draw_v the_o water_n that_o be_v in_o the_o other_o immersed_a arm_n as_o long_o as_o the_o end_n of_o its_o pipe_n reach_v low_a than_o the_o level_a of_o the_o water_n in_o the_o cistern_n for_o so_o long_o it_o appear_v by_o what_o we_o have_v say_v it_o must_v needs_o be_v more_o weighty_a since_o part_v of_o the_o rise_a water_n in_o the_o sink_a arm_n of_o the_o syphon_n be_v counterpoyse_v by_o as_o much_o descend_a water_n in_o the_o cistern_n and_o thus_o it_o be_v evident_a that_o out_o of_o this_o experiment_n it_o can_v not_o be_v infer_v that_o part_n of_o water_n do_v not_o weigh_v within_o the_o orb_n of_o their_o own_o whole_a but_o only_o that_o two_o equal_a part_n of_o water_n in_o their_o own_o orb_n namely_o that_o which_o rise_v in_o the_o sink_a arm_n and_o that_o which_o press_v down_o from_o the_o whole_a bulk_n in_o the_o cistern_n be_v of_o equal_a weight_n and_o do_v balance_v one_o a_o othet_n so_o that_o never_o so_o little_a odds_n between_o the_o two_o counterpoyse_v parcel_n of_o water_n which_o be_v in_o the_o air_n must_v needs_o make_v the_o water_n run_v out_o at_o that_o end_n of_o the_o syphon_n where_o the_o overweight_n of_o water_n be_v fire_n the_o attraction_n who_o cause_n next_o to_o this_o be_v most_o manifest_a be_v that_o which_o be_v make_v by_o the_o force_n of_o heat_n or_o of_o fire_n for_o we_o see_v that_o fire_n ever_o draw_v air_n unto_o it_o so_o notable_o that_o if_o in_o a_o close_a room_n there_o be_v a_o good_a fire_n a_o man_n that_o stand_v at_o the_o door_n or_o at_o the_o window_n especial_o without_o shall_v hear_v such_o a_o noise_n that_o he_o will_v think_v there_o be_v a_o great_a wind_n within_o the_o chamber_n the_o reason_n of_o this_o attraction_n be_v that_o fire_n rarify_n the_o air_n which_o be_v next_o unto_o it_o and_o withal_o spend_v itself_o perpetual_o cause_v the_o air_n and_o his_o own_o body_n mingle_v together_o to_o fly_v up_o through_o the_o chimney_n or_o by_o some_o other_o passage_n whence_o it_o follow_v of_o necessity_n that_o the_o next_o body_n must_v succeed_v into_o the_o place_n of_o the_o body_n that_o be_v fly_v away_o this_o next_o body_n general_o be_v air_n who_o mobility_n and_o fluidity_n beyond_o all_o other_o body_n make_v it_o of_o all_o other_o the_o fit_a to_o be_v draw_v and_o the_o more_o of_o it_o that_o be_v draw_v the_o more_o must_v needs_o follow_v now_o if_o there_o be_v float_v in_o this_o air_n any_o other_o atom_n subject_a to_o the_o current_n which_o the_o air_n take_v they_o must_v also_o come_v with_o it_o to_o the_o fire_n and_o by_o it_o must_v be_v rarify_v and_o be_v export_v out_o of_o that_o little_a orb_n hence_o it_o be_v that_o man_n with_o very_o good_a reason_n do_v hold_v that_o fire_n ayr_v a_o chamber_n as_o we_o term_v it_o that_o be_v purifi_v it_o both_o because_o it_o purifi_v it_o as_o wind_n do_v by_o draw_v a_o current_n of_o air_n into_o it_o that_o sweep_v through_o it_o or_o by_o make_v it_o purify_v itself_o by_o motion_n as_o a_o stream_n of_o water_n do_v by_o run_v as_o also_o because_o those_o vapour_n which_o approach_v the_o fire_n be_v burn_v and_o dissolve_v so_o that_o the_o air_n be_v noisome_a and_o unwholesome_a by_o reason_n of_o its_o grossness_n proceed_v from_o its_o stand_a unmoved_a like_o a_o stagnation_n of_o dead_a water_n in_o a_o marish_a place_n the_o fire_n take_v away_o that_o cause_n of_o annoyance_n by_o this_o very_a rule_n we_o learn_v that_o other_o hot_a
thing_n etc_n which_o participate_v the_o nature_n of_o fire_n must_v likewise_o in_o other_o respect_n have_v a_o resemblance_n in_o this_o quality_n and_o according_o we_o see_v that_o hot_a loafe_v in_o a_o baker_n shop_n new_o draw_v out_o of_o the_o oven_n be_v account_v to_o draw_v unto_o they_o any_o infection_n which_o be_v in_o the_o air_n the_o like_a we_o say_v of_o onion_n and_o other_o strong_a breathe_a substance_n which_o by_o their_o smell_n show_v much_o heat_n in_o they_o in_o like_a manner_n it_o be_v conceive_v that_o pigeon_n and_o rabbit_n and_o cat_n easy_o take_v infection_n by_o reason_n of_o their_o extraordinary_a warmth_n which_o they_o have_v in_o themselves_o and_o this_o be_v confirm_v by_o the_o practice_n of_o physician_n who_o use_v to_o lay_v warm_a pigeon_n new_o kill_v to_o the_o foot_n wrist_n or_o head_n of_o sick_a person_n and_o young_a puppy_n to_o their_o stomach_n and_o sometime_o certain_a hot_a gum_n to_o their_o navel_n to_o draw_v out_o such_o vapour_n or_o humour_n as_o infest_v the_o body_n for_o the_o same_o reason_n they_o hang_v amulete_n of_o arsenike_n sublimate_n dry_a toad_n or_o spider_n about_o their_o patient_n neck_n to_o draw_v unto_o they_o venomous_a quality_n from_o their_o body_n hence_o also_o it_o be_v that_o if_o a_o man_n be_v strike_v by_o a_o viper_n or_o a_o scorpion_n they_o use_v to_o break_v the_o body_n of_o the_o beast_n itself_o that_o sting_v he_o if_o they_o can_v get_v it_o upon_o the_o wound_n but_o if_o that_o beast_n be_v crawl_v out_o of_o their_o find_n they_o do_v the_o like_a by_o some_o other_o venomous_a creature_n as_o i_o have_v see_v a_o bruise_a toad_n lay_v to_o the_o bite_n of_o a_o viper_n and_o they_o manifest_o perceive_v the_o apply_v body_n to_o swell_v with_o the_o poison_n suck_v out_o from_o the_o wound_n and_o the_o patient_a to_o be_v relieve_v and_o have_v less_o poison_n in_o the_o same_o manner_n as_o by_o cup_a glass_n the_o poison_n be_v likewise_o draw_v out_o from_o the_o wound_n so_o that_o you_o may_v see_v the_o reason_n of_o both_o be_v the_o very_a same_o or_o at_o the_o least_o very_a like_o one_o a_o other_o only_o we_o be_v to_o note_v that_o the_o proper_a body_n of_o the_o beast_n out_o of_o which_o the_o venom_n be_v drive_v into_o the_o wound_n be_v more_o efficacious_a than_o any_o other_o to_o suck_v it_o out_o and_o the_o like_a be_v to_o be_v observe_v in_o all_o other_o kind_n that_o such_o vapour_n as_o be_v to_o be_v draw_v do_v come_v better_o and_o incorporate_v fast_o in_o body_n of_o like_a nature_n then_o in_o those_o which_o have_v only_o the_o common_a condition_n of_o heat_n and_o dryness_n the_o one_o of_o which_o serve_v to_o attract_v the_o other_o to_o fasten_v and_o incorporate_v into_o itself_o the_o moisture_n which_o the_o first_o draw_v unto_o it_o so_o we_o see_v that_o water_n soak_v into_o a_o dry_a body_n whence_o it_o be_v extract_v almost_o inseparable_o and_o be_v hide_v in_o it_o as_o when_o it_o rain_v first_o after_o hot_a weather_n the_o ground_n be_v present_o dry_v after_o the_o shower_n likewise_o we_o see_v that_o in_o most_o ciment_n magical_a you_o must_v mingle_v a_o dust_n of_o the_o nature_n of_o the_o thing_n which_o be_v to_o be_v cement_v if_o you_o will_v have_v they_o bind_v strong_o out_o of_o this_o discourse_n we_o may_v yield_v a_o reason_n for_o those_o magical_a operation_n which_o some_o attribute_n to_o the_o devil_n assistance_n peradventure_o because_o man_n wickedness_n have_v be_v more_o ingenious_a than_o his_o good_a will_n and_o so_o have_v find_v more_o mean_n to_o hurt_v then_o to_o help_v nay_o when_o he_o have_v arrive_v some_o way_n to_o help_v those_o very_a help_n have_v undergo_v the_o same_o calumny_n because_o of_o the_o likeness_n which_o their_o operation_n have_v to_o the_o other_o without_o doubt_n very_o unjust_o if_o there_o be_v truth_n in_o the_o effect_n for_o where_o have_v we_o any_o such_o good_a suggestion_n of_o the_o enemy_n of_o mankind_n propose_v unto_o we_o that_o we_o may_v with_o reason_n believe_v he_o will_v due_o settle_o and_o constant_o concur_v to_o the_o help_n and_o service_n of_o all_o those_o he_o so_o much_o hate_v as_o he_o must_v needs_o do_v if_o he_o be_v the_o author_n of_o such_o effect_n or_o be_v it_o not_o a_o wrong_n to_o almighty_a god_n and_o to_o his_o careful_a instrument_n rather_o to_o impute_v unto_o the_o devil_n the_o aid_n which_o to_o some_o may_v seem_v supernatural_a then_o unto_o they_o of_o who_o we_o may_v just_o believe_v and_o expect_v such_o good_a officies_n and_o assistance_n i_o mean_v those_o operation_n both_o good_a and_o bad_a which_o ordinary_o be_v call_v magnetical_a though_o peradventure_o wrongful_o as_o not_o have_v that_o property_n which_o denominate_v the_o loadestone_n one_o thing_n i_o may_v assure_v that_o if_o the_o report_n be_v true_a they_o have_v the_o perfect_a imitation_n of_o nature_n in_o they_o as_o for_o example_n that_o the_o weapon_n salve_v or_o the_o sympathetike_a powder_n do_v require_v in_o the_o use_v it_o to_o be_v conserve_v in_o a_o equal_a and_o moderate_a temper_n and_o that_o the_o weapon_n which_o make_v the_o wound_n or_o the_o cloth_n upon_o which_o the_o blood_n remain_v that_o issue_v from_o it_o be_v orderly_o and_o frequent_o dress_v or_o else_o the_o wound_a person_n will_v not_o be_v cure_v likewise_o the_o steam_n or_o spirit_n which_o at_o the_o give_n of_o the_o wound_n do_v enter_v into_o the_o pore_n of_o the_o weapon_n must_v not_o be_v drive_v out_o of_o it_o which_o will_v be_v do_v by_o fire_n and_o so_o when_o it_o be_v heat_v by_o hold_v over_o coal_n you_o may_v see_v a_o moisture_n sweat_v out_o of_o the_o blade_n at_o the_o opposite_a side_n to_o the_o fire_n as_o far_o as_o it_o enter_v into_o the_o wound_a person_n body_n which_o be_v once_o all_o sweat_v out_o you_o shall_v see_v no_o more_o the_o like_a steam_n upon_o the_o sword_n neither_o must_n the_o blood_n be_v wash_v out_o of_o the_o bloody_a cloth_n for_o in_o these_o case_n the_o powder_n or_o salve_v will_v work_v nothing_o likewise_o if_o there_o be_v any_o excess_n either_o of_o heat_n or_o of_o cold_a in_o keep_v the_o medicated_a weapon_n or_o cloth_n the_o patient_a feel_v that_o as_o he_o will_v do_v if_o the_o like_a excess_n be_v in_o any_o remedy_n that_o be_v apply_v to_o the_o wound_n itself_o likewise_o if_o the_o medicated_a weapon_n or_o bloody_a cloth_n be_v keep_v too_o close_o no_o effect_n follow_v likewise_o the_o nature_n of_o the_o thing_n use_v in_o these_o cure_n be_v of_o themselves_o sovereign_a for_o heal_v the_o like_a grief_n though_o peradventure_o too_o violent_a if_o they_o be_v apply_v in_o body_n without_o much_o attenuation_n and_o true_o if_o we_o will_v deny_v all_o effect_n of_o this_o kind_n we_o must_v in_o a_o manner_n renounce_v all_o humane_a faith_n man_n of_o all_o sort_n and_o quality_n and_o many_o of_o they_o such_o in_o my_o own_o knowledge_n as_o i_o can_v not_o question_v their_o prudence_n in_o observe_v or_o their_o sincerity_n in_o relate_v have_v very_o frequent_o make_v experience_n of_o such_o medicine_n and_o all_o affirm_v after_o one_o fashion_n to_o have_v find_v the_o same_o effect_n add_v to_o these_o the_o multitude_n of_o other_o like_a effect_n appear_v or_o conceit_a to_o appear_v in_o other_o thing_n in_o some_o country_n it_o be_v a_o familiar_a disease_n with_o cow_n to_o have_v a_o swell_a in_o the_o sole_n of_o their_o foot_n and_o the_o ordinary_a cure_n be_v to_o cut_v a_o turf_n upon_o which_o they_o have_v tread_v with_o their_o sore_a foot_n and_o to_o hang_v it_o upon_o a_o hedge_n and_o as_o that_o dry_v away_o so_o will_v their_o sore_n amend_v in_o other_o part_n they_o observe_v that_o if_o milk_n new_o come_v from_o the_o cow_n do_v in_o the_o boil_a run_v over_o into_o the_o fire_n and_o that_o this_o do_v happen_v often_o and_o near_o together_o to_o the_o same_o cow_n milk_n that_o cow_n will_v have_v her_o udder_n sore_o and_o inflame_v and_o the_o prevention_n be_v to_o cast_v salt_n immediate_o into_o the_o fire_n upon_o the_o milk_n the_o herb_n persicaria_n if_o it_o be_v well_o rub_v upon_o wart_n and_o then_o be_v lay_v in_o some_o fit_a place_n to_o putrify_v cause_v the_o wart_n to_o wear_v away_o as_o it_o rot_v some_o say_v the_o like_a of_o fresh_a beef_n many_o example_n also_o there_o be_v of_o hurt_v live_a creature_n by_o the_o like_a mean_n which_o i_o set_v not_o down_o for_o fear_n of_o do_v more_o harm_n by_o the_o evil_a inclination_n of_o some_o person_n into_o who_o hand_n they_o may_v fall_v then_o profitt_a by_o their_o know_v they_o
all_o the_o air_n in_o this_o our_o hemisphere_n be_v as_o it_o be_v strew_v over_o and_o sow_v with_o abundance_n of_o northern_a atom_n and_o that_o some_o brook_n of_o they_o be_v in_o station_n other_o in_o a_o motion_n of_o retrogradation_n back_o to_o their_o own_o north_n pole_n the_o southern_a atom_n which_o come_v upon_o they_o at_o the_o equator_fw-la do_v not_o only_o press_v in_o among_o they_o wheresoever_o they_o can_v find_v admittance_n but_o do_v also_o go_v on_o fowarde_n to_o the_o north_n pole_n in_o several_a file_n by_o themselves_o be_v drive_v that_o way_n by_o the_o same_o accidental_a cause_n which_o make_v the_o other_o retire_v back_o seize_v in_o their_o way_n upon_o the_o northern_a one_o in_o such_o manner_n as_o we_o describe_v in_o filtration_n and_o thereby_o creep_v along_o by_o they_o wheresoever_o they_o find_v they_o stand_v still_o and_o go_v along_o with_o they_o wheresoever_o they_o find_v they_o go_v back_o must_v of_o necessity_n find_v passage_n in_o great_a quantity_n towards_o and_o even_o to_o the_o north_n pole_n though_o some_o part_n of_o they_o will_v ever_o and_o anon_o be_v check_v in_o this_o their_o journey_n by_o the_o main_a current_n prevail_v over_o some_o accidental_a one_o and_o so_o be_v carry_v back_o again_o to_o the_o aequator_fw-la who_o line_n they_o have_v cross_v and_o this_o effect_n can_v not_o choose_v but_o be_v more_o or_o less_o according_a to_o the_o season_n of_o the_o year_n for_o when_o the_o sun_n be_v in_o the_o tropic_a of_o capricorn_n the_o southern_a atom_n will_v flow_v in_o much_o more_o abundance_n and_o with_o far_o great_a speed_n into_o the_o torride_a zone_n than_o the_o northern_a atom_n can_v by_o reason_n of_o the_o sun_n approximation_n to_o the_o south_n and_o his_o distance_n from_o the_o north_n pole_n since_o he_o work_v faint_v where_o he_o be_v further_a off_o and_o therefore_o from_o the_o north_n no_o more_o emanation_n or_o atom_n will_v be_v draw_v but_o such_o as_o be_v most_o subtilise_v and_o due_o prepare_v for_o that_o course_n and_o since_o only_o these_o select_a band_n do_v now_o march_v towards_o the_o aequator_fw-la their_o file_n must_v needs_o be_v thin_a than_o when_o the_o sun_n be_v in_o the_o aequator_fw-la or_o tropike_n of_o cancer_n waken_v and_o muster_v up_o all_o their_o force_n and_o consequent_o the_o quiett_a part_n of_o air_n between_o their_o file_n in_o which_o like_a atom_n be_v also_o scatter_v be_v the_o great_a whereby_o the_o advenient_a southern_a atom_n have_v the_o large_a filter_n to_o climb_v up_o by_o and_o the_o like_a happen_v in_o the_o other_o hemisphere_n when_o the_o sun_n be_v in_o the_o tropic_a of_o cancer_n as_o who_o will_v bestow_v the_o pain_n to_o compare_v they_o will_v present_o see_v now_o then_o let_v we_o consider_v what_o these_o two_o stream_n thus_o incorporate_v must_v of_o necessity_n do_v in_o the_o surface_n or_o upper_a part_n of_o the_o earth_n stone_n first_o it_o be_v evident_a they_o must_v needs_o penetrate_v a_o pretty_a depth_n into_o the_o earth_n for_o so_o freeze_a persuade_v we_o and_o much_o more_o the_o subtle_a penetration_n of_o diverse_a more_o spiritual_a body_n of_o which_o we_o have_v sufficient_o discourse_v above_o now_o let_v we_o conceive_v that_o these_o steame_n do_v find_v a_o body_n of_o a_o convenient_a density_n to_o incorporate_v themselves_o in_o in_o the_o way_n of_o density_n as_o we_o see_v that_o fire_n do_v in_o iron_n and_o in_o other_o dense_a body_n and_o this_o not_o for_o a_o hour_n or_o two_o as_o happen_v in_o fire_n but_o for_o year_n as_o i_o have_v be_v tell_v that_o in_o the_o extreme_a cold_a hill_n in_o the_o peake_n in_o darbyshire_n happen_v to_o the_o dry_a atom_n of_o cold_a which_o be_v permanent_o incorporate_v in_o water_n by_o long_o continual_a freeze_a and_o so_o make_v a_o kind_n of_o crystal_n in_o this_o case_n certain_o it_o must_v come_v to_o pass_v that_o this_o body_n will_v become_v in_o a_o manner_n whole_o of_o the_o nature_n of_o these_o steame_n which_o because_o they_o be_v draw_v from_o the_o pole_n that_o abound_v in_o cold_a and_o dryness_n for_o other_o that_o have_v not_o these_o quality_n do_v not_o contribute_v to_o the_o intend_a effect_n the_o body_n be_v apt_a to_o become_v a_o stone_n loadestone_n for_o so_o we_o see_v that_o cold_a and_o drought_n turn_v the_o superficial_a part_n of_o the_o earth_n into_o stone_n and_o rock_n and_o according_o wheresoever_o cold_a and_o dry_a wind_n reign_v powerful_o all_o such_o country_n be_v main_o rocky_a now_o then_o let_v we_o suppose_v this_o stone_n to_o be_v take_v out_o of_o the_o earth_n and_o hang_v in_o the_o air_n or_o set_v convenient_o upon_o some_o little_a pin_n or_o otherwise_o put_v in_o liberty_n so_o as_o a_o small_a impulse_n may_v easy_o turn_v it_o any_o way_n it_o will_v in_o this_o case_n certain_o follow_v that_o the_o end_n of_o the_o stone_n which_o in_o the_o earth_n lie_v towards_o the_o north_n pole_n will_v now_o in_o the_o air_n convert_v itself_o in_o the_o same_o manner_n towards_o the_o same_o point_n and_o the_o other_o end_n which_o lie_v towards_o the_o south_n turn_v by_o consequence_n to_o the_o south_n i_o speak_v of_o these_o country_n which_o lie_v between_o the_o aequator_fw-la and_o the_o north_n in_o which_o it_o can_v not_o choose_v but_o that_o the_o stream_n go_v from_o the_o north_n to_o the_o aequator_fw-la must_v be_v strong_a than_o the_o opposite_a one_o now_o to_o explicate_v how_o this_o be_v do_v suppose_v the_o stone_n hang_v east_n and_o west_n free_o in_o the_o air_n the_o stream_n which_o be_v draw_v from_o the_o north_n pole_n of_o the_o earth_n range_v along_o by_o it_o in_o its_o course_n to_o the_o aequator_fw-la and_o find_v in_o the_o stone_n the_o south_n steam_n which_o be_v grow_v innate_a to_o it_o very_o strong_a it_o must_v needs_o incorporate_v itself_o with_o it_o and_o most_o by_o those_o part_n of_o the_o steam_n in_o the_o stone_n which_o be_v strong_a which_o be_v they_o that_o come_v direct_o from_o the_o north_n of_o the_o stone_n by_o which_o i_o mean_v that_o part_n of_o the_o stone_n that_o lie_v northward_o in_o the_o earth_n and_o that_o still_o look_v to_o the_o north_n pole_n of_o the_o earth_n now_o it_o be_v in_o the_o air_n and_o therefore_o the_o great_a flood_n of_o atom_n come_v from_o the_o north_n pole_n of_o the_o earth_n will_v incorporate_v itself_o most_o strong_o by_o the_o north_n end_n of_o the_o stone_n with_o the_o little_a flood_n of_o southern_a atom_n it_o find_v in_o the_o stone_n for_o that_o end_n serve_v for_o the_o come_n out_o of_o the_o southern_a atom_n and_o send_v they_o abroad_o as_o the_o south_n end_n do_v the_o northern_a steam_n since_o the_o steame_n do_v come_v in_o at_o one_o end_n and_o do_v go_v out_o at_o the_o opposite_a end_n from_o hence_o we_o may_v gather_v that_o this_o stone_n will_v join_v and_o cleave_v to_o its_o attractive_a whensoever_o it_o happen_v to_o be_v within_o the_o sphere_n of_o its_o activity_n beside_o if_o by_o some_o accident_n it_o shall_v happen_v that_o the_o atom_n or_o steame_n which_o be_v draw_v by_o the_o sun_n from_o the_o polewarde_n to_o the_o aequator_fw-la shall_v come_v strong_a from_o some_o part_n of_o the_o earth_n which_o be_v on_o the_o side_n hand_n of_o the_o pole_n then_o from_o the_o very_a pole_n itself_o in_o this_o case_n the_o stone_n will_v turn_v from_o the_o pole_n towards_o that_o side_n last_o whatsoever_o this_o stone_n will_v do_v towards_o the_o pole_n of_o the_o earth_n the_o very_a same_o a_o lesser_a stone_n of_o the_o same_o kind_n will_v do_v towards_o a_o great_a and_o if_o there_o be_v any_o kind_n of_o other_o substance_n that_o have_v participation_n of_o the_o nature_n of_o this_o stone_n such_o a_o substance_n will_v behave_v itself_o towards_o this_o stone_n in_o the_o same_o manner_n as_o such_o a_o stone_n behave_v itself_o towards_o the_o earth_n all_o the_o phenomens_n whereof_o may_v be_v the_o more_o plain_o observe_v if_o the_o stone_n be_v cut_v into_o the_o form_n of_o the_o earth_n and_o thus_o we_o have_v find_v a_o perfect_a delineation_n of_o the_o loadestone_n from_o its_o cause_n for_o there_o be_v no_o man_n so_o ignorant_a of_o the_o nature_n of_o a_o loadestone_n but_o he_o know_v that_o the_o property_n of_o it_o be_v to_o tend_v towards_o the_o north_n to_o vary_v sometime_o to_o join_v with_o a_o other_o loadestone_n to_o draw_v iron_n unto_o it_o and_o such_o like_a who_o cause_n you_o see_v deliver_v but_o to_o come_v to_o experimental_a proof_n and_o observation_n upon_o the_o loadestone_n by_o which_o it_o will_v appear_v that_o these_o cause_n be_v well_o esteem_v and_o
apply_v subject_n we_o must_v be_v behold_v to_o that_o admirable_a searcher_n of_o the_o nature_n of_o the_o loadestone_n doctor_n gilbert_n by_o mean_n of_o who_o and_o of_o doctor_n harvey_n our_o nation_n may_v claim_v even_o in_o this_o latter_a age_n as_o deserve_v a_o crown_n for_o solid_a philosophical_a learning_n as_o for_o many_o age_n together_o it_o have_v do_v former_o for_o acute_a and_o subtle_a speculation_n in_o divinity_n but_o before_o i_o fall_v to_o particular_n i_o think_v it_o worth_a warning_n my_o reader_n how_o this_o great_a man_n arrive_v to_o discover_v so_o much_o of_o magnetical_a philosophy_n that_o he_o likewise_o if_o he_o be_v desirous_a to_o search_v into_o nature_n may_v by_o imitation_n advance_v his_o thought_n and_o knowledge_n that_o way_n in_o short_a then_o all_o the_o knowledge_n he_o get_v of_o this_o subject_n be_v by_o form_v a_o little_a loadestone_n into_o the_o shape_n of_o the_o earth_n by_o which_o mean_v he_o compass_v a_o wonderful_a design_n which_o be_v to_o make_v the_o whole_a globe_n of_o the_o earth_n maniable_a for_o he_o find_v the_o property_n of_o the_o whole_a earth_n in_o that_o little_a body_n which_o he_o therefore_o call_v a_o tertella_n or_o little_a earth_n and_o which_o he_o can_v manage_v and_o try_v experience_n upon_o at_o his_o will_n and_o in_o like_a manner_n any_o man_n that_o have_v a_o aim_n to_o advance_v much_o in_o natural_a sciency_n must_v endeavour_v to_o draw_v the_o matter_n he_o enquire_v of_o into_o some_o small_a model_n or_o into_o some_o kind_n of_o manageable_a method_n which_o he_o may_v turn_v and_o wind_n as_o he_o please_v and_o then_o let_v he_o be_v sure_a if_o he_o have_v a_o competent_a understanding_n that_o he_o will_v not_o miss_v of_o his_o mark_n but_o to_o our_o intent_n the_o first_o thing_n we_o be_v to_o prove_v be_v that_o the_o loadestone_n be_v generate_v in_o such_o sort_n as_o we_o have_v describe_v itself_o for_o proof_n whereof_o the_o first_o ground_n we_o will_v lay_v shall_v be_v to_o consider_v how_o in_o diverse_a other_o effect_n it_o be_v manifest_a that_o the_o difference_n of_o be_v expose_v to_o the_o north_n or_o to_o the_o south_n do_v cause_n very_o great_a variety_n in_o the_o same_o thing_n as_o hereafter_o we_o shall_v have_v occasion_n to_o touch_v in_o the_o bark_n and_o grain_n of_o tree_n and_o the_o like_a next_o we_o find_v by_o experience_n that_o this_o virtue_n of_o the_o loadestone_n be_v receive_v into_o other_o body_n that_o resemble_v its_o nature_n by_o heatinge_n and_o coolinge_n for_o so_o it_o pass_v in_o iron_n bar_n which_o be_v thorough_o heat_v and_o then_o lay_v to_o cool_v north_n and_o south_n be_v thereby_o imbue_v with_o a_o magnetike_a virtue_n heat_n open_v their_o body_n and_o dispose_v they_o to_o suck_v in_o such_o atom_n as_o be_v convenient_a to_o their_o nature_n that_o flow_v unto_o they_o while_o they_o be_v cool_v so_o that_o we_o can_v not_o boubt_v but_o that_o convenient_a matter_n ferment_v in_o its_o warm_a bed_n under_o the_o earth_n become_v a_o loadestone_n by_o the_o like_o suck_v in_o of_o affluent_a stream_n of_o a_o like_a complexion_n to_o the_o former_a and_o it_o fare_v in_o like_a manner_n with_o those_o fiery_a instrument_n as_o fireforke_n tongue_n shovel_n and_o the_o like_a which_o do_v stand_v constant_o upwardes_o and_o downwards_o for_o they_o by_o be_v often_o heat_v and_o cool_v again_o do_v gain_v a_o very_a strong_a verticity_n or_o turn_v to_o the_o pole_n and_o indeed_o they_o can_v not_o stand_v upwardes_o and_o downwards_o so_o little_a a_o while_n but_o that_o they_o will_v in_o that_o short_a space_n gain_v a_o manifest_a verticity_n and_o change_v it_o at_o every_o turn_n now_o since_o the_o force_n and_o vigour_n of_o this_o verticity_n be_v in_o the_o end_n that_o stand_v downwards_o it_o be_v evident_a that_o this_o effect_n proceed_v out_o of_o a_o influence_n receive_v from_o the_o earth_n and_o because_o in_o a_o loadestone_n make_v into_o a_o globe_n or_o consider_v so_o to_o the_o end_n you_o may_v reckon_v hemisphere_n in_o it_o as_o in_o the_o great_a earth_n either_o hemisphere_n give_v unto_o a_o needle_n touch_v upon_o it_o not_o only_o the_o virtue_n of_o that_o hemisphere_n where_o it_o be_v touch_v but_o likewise_o the_o virtue_n of_o the_o contrary_a hemisphere_n we_o may_v bold_o conclude_v that_o the_o virtue_n which_o a_o loadestone_n be_v impregnate_v with_o in_o the_o womb_n or_o bed_n of_o the_o earth_n where_o it_o be_v form_v and_o grow_v proceed_v as_o well_o from_o the_o contrary_a hemisphere_n of_o the_o earth_n as_o from_o that_o wherein_o it_o lie_v in_o such_o sort_n as_o we_o have_v above_o describe_v and_o as_o we_o feel_v oftentimes_o in_o our_o own_o body_n that_o some_o cold_a we_o catch_v remain_v in_o we_o a_o long_a while_n after_o the_o take_v it_o and_o that_o sometime_o it_o seem_v even_o to_o change_v the_o nature_n of_o some_o part_n of_o our_o body_n into_o which_o it_o be_v chief_o enter_v and_o have_v take_v particular_a possession_n of_o so_o that_o whensoever_o new_a atom_n of_o the_o like_a nature_n do_v again_o range_v about_o in_o the_o circumstant_fw-la air_n that_o part_n so_o deep_o affect_v with_o the_o former_a one_o of_o kin_n to_o these_o do_v in_o a_o particular_a manner_n seem_v to_o rissent_fw-la they_o and_o to_o attract_v they_o to_o it_o and_o to_o have_v its_o guest_n within_o it_o as_o it_o be_v waken_v and_o rouse_v up_o by_o the_o stroke_n of_o the_o advenient_a one_o that_o knock_v at_o their_o door_n even_o so_o but_o much_o more_o strong_o by_o reason_n of_o the_o long_a time_n and_o less_o hindrance_n we_o may_v conceive_v that_o the_o two_o virtue_n or_o atom_n proceed_v from_o the_o two_o different_a hemisphere_n do_v constitute_v a_o certain_a permanent_a and_o constant_a nature_n in_o the_o stone_n that_o imbide_v they_o which_o then_o we_o call_v a_o loadestone_n and_o be_v exceed_o sensible_a as_o we_o shall_v hereafter_o declare_v of_o the_o advenience_n to_o it_o of_o new_a atom_n alike_o in_o nature_n and_o complexion_n to_o those_o that_o it_o be_v impregnate_v with_o and_o this_o virtue_n consist_v in_o a_o kind_n of_o soft_a and_o tender_a substance_n than_o the_o rest_n of_o the_o stone_n become_v thereby_o subject_a to_o be_v consume_v by_o fire_n from_o whence_o we_o may_v gather_v the_o reason_n why_o a_o loadestone_n never_o recover_v its_o magnetike_n virtue_n after_o it_o have_v once_o lose_v it_o though_o iron_n do_v for_o the_o humidity_n of_o iron_n be_v inseparable_a from_o its_o substance_n but_o the_o humidity_n of_o a_o loadestone_n which_o make_v it_o capable_a of_o this_o effect_n may_v be_v quite_o consume_v by_o fire_n and_o so_o the_o stone_n be_v leave_v too_o dry_a for_o ever_o be_v capable_a of_o imbibe_v any_o new_a influence_n from_o the_o earth_n unless_o it_o be_v by_o a_o kind_n of_o new_a make_v it_o stream_n in_o the_o next_o place_n we_o be_v to_o prove_v that_o the_o loadestone_n do_v work_v in_o that_o manner_n as_o we_o have_v show_v for_o which_o end_n let_v we_o consider_v how_o the_o atom_n that_o be_v draw_v from_o each_o pole_n and_o hemisphere_n of_o the_o earth_n to_o the_o aequator_fw-la make_v up_o their_o course_n by_o a_o manuduction_n of_o one_o a_o other_o the_o hindermost_a can_v not_o choose_v but_o still_o follow_v on_o after_o the_o foremost_a and_o as_o it_o happen_v in_o filtration_n by_o a_o cotton_n cloth_n if_o some_o one_o part_n of_o the_o cotton_n have_v its_o disposition_n to_o the_o ascent_n of_o the_o water_n more_o perfect_a and_o ready_a than_o the_o other_o part_n have_v the_o water_n will_v assure_o ascend_v fast_o in_o that_o part_n then_o in_o any_o of_o the_o rest_n so_o if_o the_o atom_n do_v find_v a_o great_a disposition_n for_o their_o passage_n in_o any_o one_o part_n of_o the_o medium_n they_o range_v through_o then_o in_o a_o other_o they_o will_v certain_o not_o fail_v of_o take_v that_o way_n in_o great_a abundance_n and_o with_o more_o vigour_n and_o strength_n than_o any_o other_o but_o it_o be_v evident_a that_o when_o they_o meet_v with_o such_o a_o stone_n as_o we_o have_v describe_v the_o help_n by_o which_o they_o advance_v in_o their_o journey_n be_v notable_o increase_v by_o the_o flood_n of_o atom_n which_o they_o meet_v come_v out_o of_o that_o stone_n which_o be_v of_o the_o nature_n of_o their_o opposite_a pole_n they_o seize_v greedy_o upon_o they_o and_o thereby_o do_v pluck_v themselves_o fast_a on_o like_o a_o ferryman_n that_o draw_v on_o his_o boat_n the_o swiftly_o the_o more_o vigorous_o he_o tug_v and_o pull_v at_o the_o rope_n that_o lie_v thwart_v the_o river_n for_o he_o to_o hale_v himself_o over_o by_o and_o therefore_o we_o
of_o itself_o yet_o every_o one_o require_v to_o be_v direct_v and_o put_v on_o in_o its_o motion_n by_o a_o other_o and_o they_o must_v all_o of_o they_o though_o of_o very_o different_a nature_n and_o kind_n of_o motion_n conspire_v together_o to_o effect_v any_o thing_n that_o may_v be_v for_o the_o use_n and_o service_n of_o the_o whole_a and_o thus_o we_o find_v in_o they_o perfect_o the_o nature_n of_o a_o mover_n and_o a_o movable_a each_o of_o they_o move_v different_o from_o one_o a_o other_o and_o frame_v to_o themselves_o their_o own_o motion_n in_o such_o sort_n as_o be_v most_o agreeable_a to_o their_o nature_n when_o that_o part_n which_o set_v they_o on_o work_n have_v stir_v they_o up_o and_o now_o because_o these_o part_n the_o mover_n and_o the_o move_v be_v part_n of_o one_o whole_a we_o call_v the_o entire_a thing_n automatum_n or_o se_fw-la movens_fw-la or_o a_o live_a creature_n which_o also_o may_v be_v fit_o compare_v to_o a_o joiner_n or_o a_o painter_n or_o other_o crafteâ—man_n that_o have_v his_o tool_n so_o exact_o fit_v about_o he_o as_o when_o he_o have_v occasion_n to_o do_v any_o thing_n in_o his_o trade_n his_o tool_n for_o that_o action_n be_v already_o in_o the_o fit_a position_n for_o it_o to_o be_v make_v use_n of_o so_o as_o without_o remove_v himself_o from_o the_o place_n where_o he_o may_v sit_v environ_v with_o his_o tool_n he_o may_v by_o only_o pull_v of_o some_o little_a chord_n either_o apply_v the_o matter_n to_o any_o remote_a tool_n or_o any_o of_o his_o tool_n to_o the_o matter_n he_o will_v work_v upon_o according_a as_o he_o find_v the_o one_o or_o the_o other_o more_o convenient_a for_o performance_n of_o the_o action_n he_o intend_v whereas_o in_o the_o other_o there_o be_v no_o variety_n of_o motion_n but_o one_o and_o the_o same_o go_v quite_o through_o the_o body_n from_o one_o end_n of_o it_o to_o the_o other_o and_o the_o passage_n of_o the_o moisture_n through_o it_o from_o one_o part_n to_o a_o other_o next_o which_o be_v all_o the_o motion_n it_o have_v be_v in_o a_o manner_n but_o like_o the_o rise_n of_o water_n in_o a_o still_o which_o by_o heat_n be_v make_v to_o creep_v up_o by_o the_o side_n of_o the_o glass_n and_o from_o thence_o run_v through_o the_o nose_n of_o the_o limbâ—ke_n and_o fall_v into_o the_o receiver_n so_o that_o if_o we_o will_v say_v that_o a_o plant_n live_v or_o that_o the_o whole_a move_v itself_o and_o every_o part_n move_v other_o it_o be_v to_o be_v understand_v in_o a_o far_o more_o imperfect_a manner_n then_o when_o we_o speak_v of_o a_o animal_n and_o the_o same_o word_n be_v attribute_v to_o both_o in_o a_o kind_n of_o aequivocall_a sense_n but_o by_o the_o way_n i_o must_v note_v that_o under_o the_o title_n of_o plant_n i_o include_v not_o zoophyte_n or_o plantanimal_n that_o be_v such_o creature_n as_o though_o they_o go_v not_o from_o place_n to_o place_n and_o so_o cause_v a_o local_a motion_n of_o their_o whole_a substance_n yet_o in_o their_o part_n they_o have_v a_o distinct_a and_o articulate_a motion_n but_o to_o leave_v comparison_n frame_v and_o come_v to_o the_o proper_a nature_n of_o the_o thing_n let_v we_o frame_v a_o conception_n that_o not_o far_o under_o the_o superficies_n of_o the_o earth_n there_o be_v gather_v together_o diverse_a part_n of_o little_a mix_a body_n which_o in_o the_o whole_a sum_n be_v yet_o but_o little_a and_o that_o this_o little_a mass_n have_v some_o excess_n of_o fire_n in_o it_o such_o as_o we_o see_v in_o wet_a hay_n or_o in_o must_v of_o wine_n or_o in_o wort_n of_o beer_n and_o that_o withal_o the_o drought_n of_o it_o be_v in_o so_o high_a a_o degree_n as_o this_o heat_n shall_v not_o find_v mean_n be_v too_o much_o compress_v to_o play_v his_o game_n and_o that_o lie_v there_o in_o the_o bosom_n of_o the_o earth_n it_o shall_v after_o some_o little_a time_n receive_v its_o expect_a and_o desire_a drink_n through_o the_o benevolence_n of_o the_o heaven_n by_o which_o it_o be_v moisten_v and_o thereby_o make_v more_o pliable_a and_o tender_a and_o easy_a to_o be_v wrought_v upon_o the_o little_a part_n of_o fire_n shall_v break_v loose_a and_o they_o find_v this_o moisture_n a_o fit_a subject_n to_o work_v upon_o shall_v drive_v it_o into_o all_o the_o part_n of_o the_o little_a mass_n and_o digest_v it_o there_o shall_v make_v the_o mass_n swell_v which_o action_n take_v up_o long_a time_n for_o performance_n of_o it_o in_o respect_n of_o the_o small_a increase_n of_o bulk_n make_v in_o the_o mass_n by_o the_o swell_a of_o it_o can_v not_o be_v hinder_v by_o the_o press_n of_o the_o earth_n though_o lie_v never_o so_o weighty_o upon_o it_o according_a to_o the_o maxim_n we_o have_v above_o deliver_v that_o any_o little_a force_n be_v it_o never_o so_o little_a be_v able_a to_o overcome_v any_o great_a resistance_n be_v it_o never_o so_o powerful_a if_o the_o force_n do_v multiply_v the_o time_n it_o work_v in_o sufficient_o to_o equalife_o the_o proportion_n of_o the_o agent_n and_o the_o resistant_n this_o increase_n of_o bulk_n and_o swell_a of_o the_o little_a mass_n will_v of_o its_o own_o nature_n be_v towards_o all_o side_n by_o reason_n of_o the_o fire_n and_o heat_n that_o occasion_v it_o who_o motion_n be_v on_o every_o side_n from_o the_o centre_n to_o the_o circumference_n but_o it_o will_v be_v most_o efficacious_a upwardes_o towards_o the_o air_n because_o the_o resistance_n be_v least_o that_o way_n both_o by_o reason_n of_o the_o little_a thickness_n of_o the_o earth_n over_o it_o as_o also_o by_o reason_n that_o the_o upper_a part_n of_o the_o earth_n lie_v very_o loose_a and_o be_v exceed_o porous_a through_o the_o continual_a operation_n of_o the_o sun_n and_o fall_v of_o rain_n upon_o it_o it_o can_v not_o choose_v therefore_o but_o mount_n to_o the_o air_n and_o the_o same_o cause_n that_o make_v it_o do_v so_o press_v at_o the_o same_o time_n the_o low_a part_n of_o the_o mass_n downwards_o but_o what_o ascend_v to_o the_o air_n must_v be_v of_o the_o hot_a and_o more_o moist_a part_n of_o the_o ferment_a mass_n and_o what_o go_v downwards_o must_v be_v of_o his_o hard_a and_o dry_a part_n proportionate_a to_o the_o contrary_a motion_n of_o fire_n and_o of_o earth_n which_o predominate_a in_o these_o two_o kind_n of_o part_n now_o this_o that_o be_v push_v upwardes_o come_v above_o ground_n and_o be_v there_o expose_v to_o sun_n and_o wind_n contract_v thereby_o a_o hard_a and_o rough_a skin_n on_o its_o outside_n but_o within_o be_v more_o tender_a in_o this_o sort_n it_o defend_v itself_o from_o outward_a injury_n of_o weather_n while_o it_o mount_v and_o by_o thrust_v other_o part_n down_o into_o the_o earth_n it_o hold_v itself_o steadfast_a that_o although_o the_o wind_n may_v shake_v it_o yet_o it_o can_v not_o overthrow_v it_o the_o great_a this_o plant_n grow_v the_o more_o juice_n be_v daily_o accrue_v unto_o it_o and_o the_o heat_n be_v increase_v and_o consequent_o the_o great_a abundance_n of_o humour_n be_v continual_o send_v up_o which_o when_o it_o begin_v to_o clog_n at_o the_o top_n new_a humour_n press_v upwardes_o force_v a_o breach_n in_o the_o skin_n and_o so_o a_o new_a piece_n like_o the_o main_a stem_n be_v thrust_v out_o and_o begin_v on_o the_o side_n which_o we_o call_v a_o branch_n thus_o be_v our_o plant_n amplify_v till_o nature_n not_o be_v able_a still_o to_o breed_v such_o strong_a issue_n fall_v to_o work_n of_o less_o labour_n and_o push_v forth_o the_o most_o elaborate_a part_n of_o the_o plant_n juice_n into_o more_o tender_a substance_n but_o especial_o at_o the_o end_n of_o the_o branch_n where_o abundant_a humour_n but_o at_o the_o first_o not_o well_o concoct_v grow_v into_o the_o shape_n of_o a_o button_n and_o more_o and_o better_o concoct_v humour_n succeed_v it_o grow_v soft_a and_o soft_a the_o sun_n draw_v the_o subtle_a part_n outwards_o except_v what_o the_o coldness_n of_o the_o air_n and_o the_o roughness_n of_o the_o wind_n do_v harden_v into_o a_o outward_a skin_n so_o then_o the_o next_o part_n to_o the_o skin_n be_v tender_a but_o the_o very_a middle_n of_o this_o button_n must_v be_v hard_a and_o dry_a by_o reason_n that_o the_o sun_n from_o without_o and_o the_o natural_a heat_n within_o drawing_z and_o drive_v out_o the_o moisture_n and_o extend_v it_o from_o the_o centre_n must_v needs_o leave_v the_o more_o earthy_a part_n much_o shrink_v up_o and_o harden_v by_o their_o evaporate_n out_o from_o they_o whâ—ch_n harden_v be_v a_o effect_n of_o fire_n within_o and_o without_o that_o bake_v this_o hard_a substance_n incorporate_v much_o of_o itself_o with_o it_o as_o we_o
between_o they_o it_o be_v wound_v and_o enfeeble_v like_o those_o soldier_n that_o first_o enter_v a_o breach_n in_o a_o own_o from_o whence_o when_o they_o have_v drive_v the_o enemy_n they_o pursue_v he_o to_o the_o citadel_n and_o force_v he_o from_o thence_o too_o and_o so_o how_o maim_v soever_o they_o prove_v they_o make_v a_o free_a and_o easy_a way_n without_o resistance_n for_o the_o whole_a body_n of_o their_o army_n to_o follow_v they_o and_o take_v quiett_a possession_n of_o that_o which_o do_v cost_v they_o so_o much_o to_o win_v and_o thus_o we_o see_v how_o it_o may_v happen_v that_o one_o of_o these_o move_a body_n do_v not_o suffer_v so_o much_o as_o to_o be_v stay_v in_o its_o journey_n much_o less_o to_o be_v drive_v back_o and_o yet_o the_o other_o body_n at_o the_o same_o time_n work_v in_o some_o measure_n upon_o it_o by_o work_v upon_o what_o be_v next_o to_o it_o which_o recoil_v against_o it_o must_v needs_o make_v some_o impression_n upon_o it_o since_o there_o can_v be_v no_o opposition_n but_o must_v have_v some_o effect_n now_o this_o impression_n or_o effect_n though_o it_o be_v not_o perceptible_a by_o cause_v a_o contrary_a motion_n yet_o it_o must_v needs_o enfeeble_v the_o virtue_n of_o the_o conquer_a agent_n and_o deaden_a the_o celerity_n of_o its_o motion_n and_o thus_o it_o be_v evident_a that_o in_o all_o pure_a local_a motion_n of_o corporeal_a agent_n every_o one_o of_o they_o must_v in_o some_o proportion_n suffer_v in_o act_v and_o in_o suffer_v must_v act_v and_o what_o we_o have_v say_v of_o this_o kind_n of_o action_n doctrine_n may_v easy_o be_v apply_v to_o the_o other_o where_o the_o effect_n of_o local_a motion_n be_v design_v by_o a_o particular_a name_n as_o it_o be_v in_o the_o example_n we_o give_v of_o heat_n and_o cool_v and_o in_o that_o the_o proceed_n will_v appear_v to_o be_v the_o very_a same_o as_o in_o this_o for_o if_o fire_n do_v heat_n water_n the_o water_n react_v again_o either_o upon_o the_o fire_n and_o cool_v it_o if_o it_o be_v immediate_a unto_o it_o or_o else_o upon_o the_o interjacent_a air_n if_o it_o be_v at_o a_o distance_n from_o the_o fire_n and_o so_o the_o air_n be_v in_o some_o measure_n cool_v by_o the_o cold_a atom_n that_o issue_n from_o the_o water_n who_o compass_n or_o sphere_n of_o activity_n be_v lesser_a than_o the_o fire_n they_o can_v not_o cool_v so_o far_o off_o as_o the_o other_o can_v heat_v but_o where_o they_o do_v arrive_v they_o give_v their_o proportion_n of_o cold_a in_o the_o very_a midst_n of_o the_o other_o army_n of_o fiery_a atom_n notwithstanding_o their_o multitude_n and_o violence_n according_a to_o which_o doctrine_n our_o countryman_n suiss_v his_o argument_n that_o in_o the_o school_n be_v hold_v insoluble_a have_v not_o so_o much_o as_o any_o semblance_n of_o the_o least_o difficulty_n for_o it_o be_v evident_a that_o such_o atom_n of_o fire_n and_o of_o water_n as_o we_o determine_v heat_n and_o cold_a to_o be_v may_v pass_v and_o crowd_n by_o one_o a_o other_o into_o the_o subject_n they_o be_v send_v unto_o by_o diverse_a little_a stream_n without_o hinder_v one_o a_o other_o as_o we_o have_v declare_v of_o air_n and_o light_n and_o each_o of_o they_o be_v receive_v in_o their_o own_o nature_n and_o temper_n by_o the_o same_o subject_n though_o sense_n can_v judge_v only_o according_a to_o which_o of_o they_o be_v predominant_a and_o according_a to_o the_o proportion_n of_o its_o superiority_n upon_o which_o occasion_n we_o can_v not_o choose_v but_o note_n how_o the_o doctrine_n of_o quality_n be_v not_o only_o unable_a to_o give_v account_n of_o the_o ordinary_a and_o plain_a effect_n of_o nature_n but_o also_o use_v to_o end_v in_o clear_a impossibility_n and_o contradiction_n if_o it_o be_v drive_v far_o as_o this_o argument_n of_o suiss_v show_v and_o many_o other_o of_o the_o like_a nature_n a_o four_o position_n among_o philosopher_n be_v not_o that_o some_o notion_n do_v admit_v the_o denomination_n of_o intention_n and_o remission_n but_o that_o other_o do_v not_o the_o reason_n of_o which_o we_o shall_v clear_o see_v if_o we_o but_o consider_v how_o these_o term_n of_o intention_n and_o remission_n do_v but_o express_v more_o or_o less_o of_o the_o thing_n that_o be_v say_v to_o be_v intend_v or_o remit_v for_o the_o nature_n of_o more_o and_o less_o do_v imply_v a_o latitude_n and_o divisibility_n and_o therefore_o can_v not_o agree_v with_o the_o nature_n of_o such_o thing_n as_o consist_v in_o a_o indivisible_a be_v as_o for_o example_n to_o be_v a_o whole_a or_o to_o be_v a_o equal_a can_v not_o be_v sometime_o more_o sometime_o less_o for_o they_o consist_v in_o such_o a_o rigorous_a indivisible_a be_v that_o if_o the_o least_o part_n imaginable_a be_v want_v it_o be_v no_o long_o a_o whole_a and_o if_o there_o be_v the_o least_o excess_n between_o two_o thing_n they_o be_v no_o long_o equal_a but_o be_v in_o some_o other_o proportion_n then_o of_o equality_n in_o regard_n of_o one_o a_o other_o and_o hence_o it_o be_v that_o aristotle_n teach_v we_o that_o substance_n and_o the_o species_n of_o quantity_n do_v not_o admit_v of_o intention_n and_o remission_n but_o that_o quality_n do_v for_o first_o in_o substance_n we_o know_v that_o the_o signification_n of_o this_o word_n be_v that_o which_o make_v a_o thing_n be_v what_o it_o be_v as_o be_v evident_a by_o our_o give_v it_o for_o a_o answer_n to_o the_o question_n what_o a_o thing_n be_v and_o therefore_o if_o there_o be_v any_o divisibility_n in_o substance_n it_o will_v be_v in_o what_o the_o thing_n be_v and_o consequent_o every_o division_n follow_v that_o divisibility_n will_v make_v the_o thing_n a_o other_o what_o that_o be_v a_o other_o thing_n and_o so_o the_o substance_n that_o be_v pretend_v to_o be_v change_v by_o intention_n or_o remission_n will_v not_o be_v divide_v as_o be_v suppose_v but_o will_v cease_v to_o be_v and_o a_o other_o substance_n will_v succeed_v in_o the_o room_n of_o it_o whereby_o you_o see_v that_o every_o mutation_n in_o substance_n make_v a_o new_a thing_n and_o that_o more_o and_o less_o in_o quiddity_n can_v not_o be_v pronounce_v of_o the_o same_o thing_n likewise_o in_o quantity_n it_o be_v clear_a that_o its_o speciese_n do_v consist_v in_o a_o indivisible_a for_o as_o in_o number_n ten_o lion_n for_o example_n or_o ten_o elephant_n be_v no_o more_o in_o regard_n of_o multitude_n than_o ten_o flea_n or_o ten_o moat_n in_o the_o sun_n and_o if_o you_o add_v or_o take_v any_o thing_n from_o ten_o it_o be_v no_o more_o ten_o but_o some_o other_o number_n so_o likewise_o in_o continue_a extension_n a_o span_n a_o ell_n a_o ounce_n or_o any_o other_o measure_n whatsoever_o cease_v to_o be_v a_o span_n and_o the_o rest_n if_o you_o add_v to_o it_o or_o diminish_v from_o it_o the_o least_o quantity_n imaginable_a and_o peradventure_o the_o same_o be_v also_o of_o figure_n as_o of_o a_o sphere_n a_o cube_fw-la a_o circle_n a_o square_a etc._n etc._n though_o they_o be_v in_o the_o rank_n of_o quality_n but_o if_o we_o consider_v such_o quality_n as_o heat_n cold_a moisture_n dryness_n softness_n hardness_n weight_n lightness_n and_o the_o like_a we_o shall_v find_v that_o they_o may_v be_v in_o any_o body_n sometime_o more_o sometime_o less_o according_a as_o the_o excess_n of_o any_o element_n or_o mixture_n be_v great_a in_o it_o at_o one_o time_n then_o at_o a_o other_o and_o yet_o the_o body_n in_o which_o these_o quality_n be_v intend_v or_o remit_v remain_v still_o with_o the_o same_o denomination_n as_o when_o dirt_n continue_v still_o soft_a though_o sometime_o it_o be_v less_o soft_a other_o while_o soft_a and_o wax_n remain_v figurable_a whether_o it_o be_v melt_v or_o congeal_v and_o wood_n be_v still_o hot_a though_o it_o lose_v or_o gain_v some_o degree_n of_o heat_n but_o such_o intention_n in_o any_o subject_n whatsoever_o have_v its_o determinate_a limit_n that_o it_o can_v not_o pass_v for_o when_o more_o of_o that_o quality_n that_o we_o say_v be_v intend_v that_o be_v more_o of_o the_o atom_n of_o the_o active_a body_n be_v bring_v into_o the_o body_n that_o suffer_v the_o intention_n than_o its_o complexion_n can_v brook_v it_o resign_v its_o nature_n to_o their_o violence_n and_o become_v a_o new_a thing_n such_o a_o one_o as_o they_o be_v please_v to_o make_v it_o as_o when_o wood_n with_o extremity_n of_o heat_n that_o be_v with_o bring_v into_o it_o so_o many_o atom_n of_o fire_n that_o the_o fire_n be_v strong_a in_o it_o then_o its_o own_o nature_n be_v convert_v into_o fire_n smoke_n water_n and_o ash_n and_o nothing_o remain_v of_o the_o nature_n of_o wood_n bulk_n but_o before_o we_o end_v this_o chapter_n
we_o may_v remember_v how_o in_o the_o close_a of_o the_o four_o we_o remit_v a_o question_n concern_v the_o existence_n of_o the_o element_n that_o be_v whether_o in_o any_o place_n of_o the_o world_n there_o be_v any_o pure_a element_n either_o in_o bulk_n or_o in_o little_a part_n as_o be_v not_o ready_a to_o resolve_v it_o till_o we_o have_v declare_v the_o manner_n of_o work_v of_o body_n one_o upon_o a_o other_o here_o then_o will_v be_v a_o fit_a place_n to_o determine_v that_o out_o of_o what_o we_o have_v discourse_v concern_v the_o action_n whereby_o body_n be_v make_v and_o corrupt_v for_o consider_v the_o universal_a action_n of_o fire_n that_o run_v through_o all_o the_o body_n we_o have_v commerce_n withal_o by_o reason_n of_o the_o sun_n influence_n into_o they_o and_o operation_n upon_o they_o with_o his_o light_n and_o beam_n which_o reach_v far_o and_o near_o and_o look_v upon_o the_o effect_n which_o we_o have_v show_v do_v follow_v thence_o it_o be_v manifest_a there_o can_v not_o be_v any_o great_a quantity_n of_o any_o body_n whatsoever_o in_o which_o fire_n be_v not_o intrinsical_o mix_v and_o on_o the_o other_o side_n we_o see_v that_o where_o fire_n be_v once_o mix_v it_o be_v very_o hard_a to_o separate_v it_o total_o from_o thence_o again_o we_o see_v it_o be_v impossible_a that_o pure_a fire_n shall_v be_v conserve_v without_o be_v adjoin_v to_o some_o other_o body_n both_o because_o of_o its_o violent_a nativity_n still_o stream_v forth_o with_o a_o great_a impetuosity_n as_o also_o because_o it_o be_v so_o easy_o overcome_v by_o any_o obsident_fw-la body_n when_o it_o be_v dilate_v and_o therefore_o we_o may_v safe_o conclude_v that_o no_o simple_a element_n can_v consist_v in_o any_o great_a quantity_n in_o this_o course_n of_o nature_n which_o we_o live_v in_o and_o take_v a_o survey_n of_o neither_o do_v it_o appear_v to_o what_o purpose_n nature_n shall_v have_v place_v any_o such_o storehouse_n of_o simple_n see_v she_o can_v make_v all_o needful_a complexion_n by_o the_o dissolution_n of_o mix_a body_n into_o other_o mix_a body_n savour_v of_o the_o nature_n of_o the_o element_n without_o need_v their_o purity_n to_o begin_v upon_o but_o on_o the_o other_o side_n it_o be_v as_o evident_a that_o the_o element_n must_v remain_v pure_a in_o every_o compound_a body_n in_o such_o extreme_a small_a part_n as_o we_o use_v to_o call_v atom_n for_o if_o they_o do_v not_o the_o variety_n of_o body_n will_v be_v nothing_o else_o but_o so_o many_o degree_n of_o rarity_n and_o density_n or_o so_o many_o pure_a homogeneal_a element_n and_o not_o body_n compose_v of_o heterogeneal_a part_n and_o consequent_o will_v not_o be_v able_a to_o show_v that_o variety_n of_o part_n which_o we_o see_v in_o body_n nor_o can_v produce_v the_o complicate_v effect_n which_o proceed_v from_o they_o and_o according_o we_o be_v sure_a that_o the_o least_o part_n which_o our_o sense_n can_v arrive_v to_o discover_v have_v many_o variety_n in_o they_o even_o so_o much_o that_o a_o whole_a live_a creature_n who_o organical_a part_n must_v needs_o be_v of_o exceed_v different_a nature_n may_v be_v so_o little_a as_o unto_o our_o eye_n to_o seem_v indivisible_a we_o not_o distinguish_v any_o difference_n of_o part_n in_o it_o without_o the_o help_n of_o a_o multiply_a glass_n as_o in_o the_o least_o kind_n of_o mite_n and_o in_o worm_n pick_v out_o of_o child_n hand_n we_o daily_o experience_n so_o as_o it_o be_v evident_a that_o no_o sensible_a part_n can_v be_v unmingled_a but_o then_o again_o when_o we_o call_v to_o mind_v how_o we_o have_v show_v that_o the_o quality_n which_o we_o find_v in_o body_n do_v result_v out_o of_o the_o composition_n and_o mixtion_n of_o the_o element_n we_o must_v needs_o conclude_v that_o they_o must_v of_o necessity_n remain_v in_o their_o own_o essence_n in_o the_o mix_a body_n and_o so_o out_o of_o the_o whole_a discourse_n determine_v that_o they_o be_v not_o there_o in_o any_o visible_a quantity_n but_o in_o those_o least_o atom_n that_o be_v too_o subtle_a for_o our_o sense_n to_o discern_v which_o position_n we_o do_v not_o understand_v so_o metaphysical_o as_o to_o say_v that_o their_o substantial_a form_n remain_v actual_o in_o the_o mix_a body_n but_o only_o that_o their_o accidental_a quality_n be_v find_v in_o the_o compound_n remit_v that_o other_o question_n unto_o metaphysician_n those_o spiritual_a anatomist_n to_o decide_v the_o seventeen_o chapter_n of_o rarefaction_n and_o condensation_n the_o two_o first_o motion_n of_o particular_a body_n chapter_n our_o intention_n in_o this_o discourse_n concern_v the_o nature_n and_o motion_n of_o body_n aim_v no_o further_a than_o at_o the_o discovery_n of_o what_o be_v or_o may_v be_v do_v by_o corporeal_a agent_n thereby_o to_o determine_v what_o be_v the_o work_n of_o immaterial_a and_o spiritual_a substance_n it_o can_v not_o be_v expect_v at_o our_o hand_n that_o we_o shall_v deliver_v here_o a_o entire_a and_o complete_a body_n of_o natural_a philosophy_n but_o only_o that_o we_o shall_v take_v so_o much_o of_o it_o in_o our_o way_n as_o be_v needful_a to_o carry_v we_o with_o truth_n and_o evidence_n to_o our_o journey_n end_n it_o belong_v not_o then_o to_o we_o to_o meddle_v with_o those_o sublime_a contemplation_n which_o search_v into_o the_o nature_n of_o the_o vast_a universe_n and_o that_o determine_v the_o unity_n and_o limitation_n of_o it_o and_o that_o show_v by_o what_o string_n and_o upon_o what_o pin_n and_o wheel_n and_o hinge_n the_o whole_a world_n move_v and_o that_o from_o thence_o do_v ascend_v unto_o a_o awful_a acknowledgement_n and_o humble_a admiration_n of_o the_o primary_n cause_n from_o whence_o and_o of_o which_o both_o the_o be_v of_o it_o and_o the_o beginning_n of_o the_o first_o motion_n and_o the_o continuance_n of_o all_o other_o do_v proceed_v and_o depend_v nor_o in_o deed_n will_v it_o be_v to_o the_o purpose_n for_o anyman_n to_o sail_v in_o this_o ocean_n and_o to_o begin_v a_o new_a voyage_n of_o navigation_n upon_o it_o unless_o he_o be_v assure_v he_o have_v ballast_n enough_o in_o his_o ship_n to_o make_v she_o sink_v deep_a into_o the_o water_n and_o to_o carry_v she_o steady_o through_o those_o unruly_a wave_n and_o that_o he_o be_v furnish_v with_o skill_n and_o provision_n sufficient_a to_o go_v through_o without_o either_o lose_n his_o course_n by_o steer_v after_o a_o wrong_a compass_n or_o be_v force_v back_o again_o with_o short_a and_o obscure_a relation_n of_o discovery_n since_o other_o that_o go_v out_o before_o he_o be_v return_v with_o a_o large_a account_n to_o such_o as_o be_v able_a to_o understand_v and_o sum_n it_o up_o which_o sure_o our_o learned_a countryman_n white_a and_o my_o best_a and_o most_o honour_a friend_n and_o to_o who_o of_o all_o man_n live_v i_o be_o most_o oblige_v for_o to_o he_o i_o owe_v that_o little_a which_o i_o know_v and_o what_o i_o have_v and_o shall_v set_v down_o in_o all_o this_o discourse_n be_v but_o a_o few_o spark_n kindle_v by_o i_o at_o his_o great_a fire_n have_v both_o profound_o and_o acute_o and_o in_o every_o regard_n judicious_o perform_v in_o his_o dialogue_n of_o the_o world_n our_o task_n then_o in_o a_o low_a strain_n and_o more_o proportionate_a to_o so_o weak_a shoulder_n be_v to_o look_v no_o further_o then_o among_o those_o body_n we_o converse_v withal_o of_o which_o have_v declare_v by_o what_o course_n and_o engine_n nature_n govern_v their_o common_a motion_n that_o be_v find_v even_o in_o the_o element_n and_o from_o thence_o be_v derive_v to_o all_o body_n compose_v of_o they_o we_o intend_v now_o to_o consider_v such_o motion_n as_o accompany_v diverse_a particular_a body_n and_o be_v much_o admire_v by_o whosoever_o understand_v not_o the_o cause_n of_o they_o to_o begin_v from_o the_o easy_a and_o most_o connex_v with_o the_o action_n of_o the_o element_n perform_v the_o handsel_n of_o our_o labour_n will_v light_v upon_o the_o motion_n of_o rarefaction_n and_o condensation_n as_o they_o be_v the_o passion_n of_o mix_a body_n and_o first_o for_o rarefaction_n we_o may_v remember_v how_o it_o proceed_v original_o from_o fire_n and_o depend_v of_o heat_n as_o be_v declare_v in_o the_o former_a chapter_n and_o wheresoever_o we_o find_v rarefaction_n we_o may_v be_v confident_a the_o body_n which_o suffer_v it_o be_v not_o without_o fire_n work_v upon_o it_o from_o hence_o we_o may_v gather_v that_o when_o the_o air_n imprison_v in_o a_o balloon_n or_o bladder_n swell_v against_o what_o contain_v it_o and_o stretch_v its_o case_n and_o seek_v to_o break_v out_o this_o effect_n must_v proceed_v from_o fire_n or_o heat_n though_o we_o see_v not_o the_o fire_n work_v either_o within_o the_o very_a bowel_n of_o the_o air_n