can_v strike_v it_o but_o it_o be_v evident_a say_v you_o out_o of_o these_o pretend_a cause_n of_o this_o motion_n that_o such_o atom_n can_v move_v so_o swift_o downward_o as_o a_o great_a dense_a body_n since_o their_o littleness_n and_o their_o rarity_n be_v both_o of_o they_o hinder_v to_o their_o motion_n therefore_o this_o can_v be_v cause_n of_o that_o effect_n which_o we_o call_v gravity_n to_o this_o i_o reply_v that_o to_o have_v the_o atom_n give_v these_o blow_n to_o a_o descend_v dense_a body_n it_o be_v not_o require_v that_o their_o natural_a and_o ordinary_a motion_n shall_v be_v swift_a than_o the_o descent_n of_o such_o a_o dense_a body_n but_o the_o very_a descent_n of_o it_o occasion_n their_o strike_v it_o for_o as_o it_o fall_v and_o make_v itself_o a_o way_n through_o they_o they_o divide_v themselves_o before_o it_o and_o swell_v on_o the_o side_n and_o a_o little_a above_o it_o and_o present_o close_v again_o behind_o it_o and_o over_o it_o assoon_o as_o it_o 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so_o its_o superficies_n become_v even_o in_o the_o three_o place_n a_o enquiry_n occur_v emergent_a out_o of_o this_o doctrine_n of_o the_o cause_n of_o body_n move_v upward_o and_o downward_o undecided_a which_o be_v whether_o there_o will_v be_v any_o natural_a motion_n deep_a in_o the_o earth_n beyond_o the_o activity_n of_o the_o sun_n beam_n for_o out_o of_o these_o principle_n it_o follow_v that_o there_o will_v not_o and_o consequent_o there_o must_v be_v a_o vast_a orb_n in_o which_o there_o will_v be_v no_o motion_n of_o gravity_n or_o levity_n for_o suppose_v the_o sun_n beam_n may_v pierce_v a_o thousand_o mile_n deep_a into_o the_o body_n of_o the_o earth_n yet_o there_o will_v still_o remain_v a_o mass_n who_o diameter_n will_v be_v near_o 5000_o mile_n in_o which_o there_o will_v be_v no_o gravitation_n nor_o the_o contrary_a motion_n for_o my_o part_n i_o shall_v make_v no_o difficulty_n to_o grant_v the_o inference_n as_o far_o as_o concern_v motion_n cause_v by_o 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of_o a_o body_n gravity_n and_o descend_v towards_o the_o centre_n the_o same_o body_n will_v at_o divers_a time_n descend_v more_o and_o less_o swift_o for_o example_n after_o midnight_n when_o the_o atom_n begin_v to_o descend_v more_o slow_o the_o same_o body_n will_v descend_v more_o slow_o in_o a_o like_a proportion_n and_o not_o weigh_v so_o much_o as_o it_o do_v in_o the_o heat_n of_o the_o day_n the_o same_o may_v be_v say_v of_o summer_n and_o winter_n for_o in_o winter_n time_n the_o atom_n seem_v to_o be_v more_o gross_a and_o consequent_o to_o strike_v more_o strong_o upon_o the_o body_n they_o meet_v with_o in_o their_o way_n as_o they_o descend_v yet_o on_o the_o other_o side_n they_o seem_v in_o the_o summer_n to_o be_v more_o numerous_a as_o also_o to_o descend_v from_o a_o great_a height_n both_o which_o circumstance_n will_v be_v cause_n of_o a_o strong_a stroke_n and_o more_o vigorous_a impulse_n on_o the_o body_n they_o hit_v and_o the_o like_a may_v be_v object_v of_o divers_a part_n of_o the_o world_n for_o in_o the_o torrid_a zone_n it_o will_v always_o happen_v as_o in_o summer_n in_o place_n of_o the_o temperate_a zone_n and_o in_o the_o polar_a time_n as_o in_o deep_a winter_n so_o that_o no_o where_o there_o shall_v be_v any_o standard_n or_o certainty_n in_o the_o weight_n of_o body_n if_o it_o depend_v upon_o so_o mutable_a a_o cause_n and_o it_o make_v to_o the_o same_o effect_n that_o a_o body_n which_o lie_v under_o a_o thick_a rock_n or_o any_o other_o very_o dense_a body_n that_o can_v be_v penetrate_v by_o any_o great_a store_n of_o atom_n shall_v not_o be_v so_o heavy_a as_o it_o will_v be_v in_o the_o open_a and_o free_a air_n where_o the_o atom_n in_o their_o complete_a number_n have_v their_o full_a stroke_n for_o answer_v to_o these_o and_o such_o like_a instance_n we_o be_v to_o note_v first_o that_o it_o be_v not_o so_o much_o the_o number_n or_o violence_n of_o the_o percussion_n of_o the_o strike_a atom_n as_o the_o density_n of_o the_o thing_n strike_v which_o give_v the_o measure_n to_o the_o descend_v of_o a_o weighty_a body_n and_o the_o chief_a thing_n which_o the_o stroke_n of_o the_o atom_n give_v to_o a_o dense_a body_n be_v a_o determination_n of_o the_o way_n which_o a_o dense_a body_n be_v to_o cut_v to_o itself_o therefore_o multiplication_n or_o lessen_v of_o the_o atom_n will_v not_o make_v any_o sensible_a difference_n betwixt_o the_o weight_n of_o one_o dense_a body_n where_o manya_n tom_n strike_v and_o a_o other_o body_n of_o the_o same_o density_n where_o but_o a_o few_o strike_v so_o that_o the_o stroke_n downward_o of_o the_o descend_a atom_n be_v great_a than_o the_o stroke_n upward_o of_o the_o ascend_a atom_n and_o thereby_o determine_v it_o to_o weigh_v to_o the_o centreward_n and_o not_o rise_v float_v upward_o which_o be_v all_o the_o sensible_a effect_n we_o can_v perceive_v next_o we_o may_v observe_v that_o the_o first_o particular_n of_o the_o objection_n do_v not_o reach_v home_o to_o enfeeble_v our_o doctrine_n in_o this_o particular_a although_o we_o admit_v they_o to_o be_v in_o such_o sort_n as_o they_o be_v propose_v for_o they_o withal_o imply_v such_o a_o perpetual_a variation_n of_o cause_n ever_o favourable_a to_o our_o position_n that_o nothing_o can_v be_v infer_v out_o of_o they_o to_o repugn_v against_o it_o as_o thus_o when_o there_o be_v many_o atom_n descend_v in_o the_o air_n the_o same_o general_a cause_n which_o make_v they_o be_v many_o make_v they_o also_o be_v light_n in_o proportion_n to_o their_o multitude_n and_o so_o when_o they_o be_v few_o they_o be_v heavy_a likewise_o when_o the_o atom_n be_v light_a the_o air_n be_v rarify_v and_o thin_a and_o when_o they_o be_v heavy_a the_o air_n be_v thick_a and_o so_o upon_o the_o whole_a matter_n it_o be_v evident_a that_o we_o can_v make_v such_o a_o precise_a and_o exact_a judgement_n of_o the_o variety_n of_o circumstance_n as_o to_o be_v able_a to_o determine_v when_o there_o be_v absolute_o more_o cause_n of_o weight_n and_o when_o less_o and_o as_o we_o find_v not_o weight_n enough_o in_o either_o side_n of_o these_o opposite_a circumstance_n to_o turn_v the_o scale_n in_o our_o discourse_n so_o likewise_o we_o find_v the_o same_o indifference_n in_o experience_n itself_o for_o the_o weight_n we_o use_v do_v weigh_v equal_o in_o misty_a weather_n and_o in_o clear_a and_o yet_o in_o rigour_n of_o discourse_n we_o can_v doubt_v but_o that_o in_o truth_n they_o do_v not_o gravitate_fw-la or_o weigh_v so_o much_o though_o the_o difference_n be_v imperceptible_a to_o sense_n when_o the_o air_n be_v thick_a and_o foggy_a as_o when_o its_o pure_a and_o rarify_v which_o thickness_n of_o the_o medium_fw-la when_o it_o arrive_v to_o a_o very_a
refraction_n 6._o a_o answer_n to_o the_o argument_n bring_v in_o favour_n of_o mounseur_fw-fr des_fw-fr cartes_n his_o opinion_n 7._o the_o true_a cause_n of_o refraction_n of_o light_n both_o at_o its_o entrance_n and_o at_o its_o go_v out_o from_o the_o refle_a body_n 8._o a_o general_a rule_n to_o know_v the_o nature_n of_o reflection_n and_o refraction_n in_o all_o sort_n of_o surface_n 9_o a_o body_n of_o great_a part_n and_o great_a pore_n make_v a_o great_a refraction_n than_o one_o of_o lesser_a part_n and_o lesser_a pore_n 10._o a_o confirmation_n of_o the_o former_a doctrine_n out_o of_o the_o nature_n of_o body_n that_o refract_v light_a chap._n fourteen_o of_o the_o composition_n quality_n &_o generation_n of_o mix_a body_n 1._o the_o connexion_n of_o this_o chapter_n with_o the_o rest_n and_o the_o author_n intent_n in_o it_o 2._o that_o there_o be_v a_o least_o size_n of_o body_n and_o that_o this_o least_o size_n be_v find_v in_o fire_n 3._o the_o first_o conjunction_n of_o part_n be_v in_o body_n of_o least_o size_n and_o it_o be_v make_v by_o the_o force_n of_o quantity_n 4._o the_o second_o sort_n of_o conjunction_n be_v compactedness_n in_o simple_a element_n and_o it_o proceed_v from_o density_n 5._o the_o three_o conjunction_n be_v of_o part_n of_o different_a element_n and_o it_o proceed_v from_o quantity_n and_o density_n together_o 6._o the_o reason_n why_o liquid_a body_n do_v easy_o join_v together_o and_o dry_a one_o difficult_o 7._o that_o no_o two_o hard_a body_n can_v touch_v one_o another_o immediate_o 8._o how_o mix_v body_n be_v frame_v in_o general_n 9_o the_o cause_n of_o the_o several_a degree_n of_o solidity_n in_o mix_a body_n 10._o the_o rule_n whereto_o be_v reduce_v all_o the_o several_a combination_n of_o element_n in_o compound_v of_o mix_a body_n 11._o earth_n and_o water_n be_v the_o basis_n of_o all_o permanent_a mix_a body_n 12._o what_o kind_n of_o body_n those_o be_v where_o water_n be_v the_o basis_n and_o earth_n the_o predominant_a element_n over_o the_o other_o two_o 13._o of_o those_o body_n where_o water_n be_v the_o basis_n air_n be_v the_o predominant_a element_n 14._o what_o kind_n of_o body_n result_v where_o water_n be_v the_o basis_n and_o fire_n the_o predominant_a element_n 15._o of_o those_o body_n where_o water_n be_v in_o excess_n it_o alone_o be_v both_o the_o basis_n and_o the_o predominant_a element_n 16._o of_o those_o body_n where_o earth_n alone_o be_v the_o basis_n and_o also_o the_o predominant_a in_o excess_n over_o the_o other_o three_o element_n 17._o of_o those_o body_n where_o earth_n be_v the_o basis_n &_o water_n be_v the_o predominant_a element_n over_o the_o other_o two_o 18._o of_o those_o body_n where_o earth_n be_v the_o basis_n air_n be_v the_o predominant_a 19_o of_o those_o body_n where_o earth_n be_v the_o basis_n fire_n be_v the_o predominant_a 20._o all_o the_o second_o quality_n of_o mix_a body_n arise_v from_o several_a combination_n of_o the_o first_o quality_n and_o be_v at_o last_o resolve_v into_o several_a degree_n of_o rarity_n &_o density_n 21._o that_o in_o the_o planet_n &_o star_n there_o be_v a_o like_a variety_n of_o mix_a body_n cause_v by_o light_n as_o here_o on_o earth_n 22._o in_o what_o manner_n the_o element_n work_v on_o one_o another_o in_o the_o composition_n of_o mix_a body_n and_o in_o particular_a fire_n which_o be_v the_o most_o active_a 23._o a_o particular_a declaration_n touch_v the_o generation_n of_o metal_n chap._n xv._n of_o the_o dissolution_n of_o mix_a body_n 1._o why_o some_o body_n be_v brittle_a and_o other_o tough_a or_o apt_a to_o withstand_v outward_a violence_n the_o first_o instrument_n to_o dissolve_v mix_v body_n 2._o how_o outward_a violence_n do_v work_v on_o the_o most_o compact_a body_n 3._o the_o several_a effect_n of_o fire_n the_o second_o and_o chief_a instrument_n to_o dissolve_v all_o compound_a body_n 4._o the_o reason_n why_o some_o body_n be_v not_o dissolve_v by_o fire_n 5._o the_o reason_n why_o fire_n melt_v gold_n but_o can_v consume_v it_o 6._o why_o lead_n be_v easy_o consume_v and_o calcint_v by_o fire_n 7._o why_o and_o how_o some_o body_n be_v divide_v by_o fire_n into_o spirit_n water_n oil_n salt_n and_o earth_n and_o what_o those_o part_n be_v 8._o how_o water_n the_o three_o instrument_n to_o dissolve_v body_n dissolu_v calx_fw-la into_o salt_n and_o so_o into_o terra_fw-la damnata_fw-la 9_o how_o water_n mingle_v with_o salt_n become_v a_o most_o powerful_a agent_n to_o dissolve_v other_o body_n 10._o how_o putrefaction_n be_v cause_v chap._n xvi_o a_o explication_n of_o certain_a maxim_n touch_v the_o operation_n and_o qualy_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 1._o what_o be_v the_o sphere_n of_o activity_n in_o corporeal_a agent_n 2._o the_o reason_n why_o no_o body_n can_v work_v in_o distance_n 3._o a_o objection_n answer_v against_o the_o manner_n of_o explicate_v the_o former_a axiom_n 4._o of_o re-action_n and_o first_o in_o pure_a local_a motion_n that_o each_o agent_n must_v suffer_v in_o act_v and_o act_n in_o suffering_n 5._o the_o former_a doctrine_n apply_v to_o other_o local_a motion_n design_v by_o particular_a name_n and_o that_o suisseths_n argument_n be_v of_o no_o force_n against_o this_o way_n of_o doctrine_n 6._o why_o some_o notion_n do_v admit_v of_o intention_n and_o remission_n and_o other_o not_o 7._o that_o in_o every_o part_n of_o our_o habitable_a world_n all_o the_o four_o element_n be_v find_v pure_a in_o small_a atom_n but_o not_o in_o any_o great_a bulk_n chap._n xvii_o of_o rarefaction_n and_o condensation_n the_o two_o first_o motion_n of_o particular_a body_n 1._o the_o author_n intent_n in_o this_o and_o the_o follow_a chapter_n 2._o that_o body_n may_v be_v rarify_v both_o by_o outward_a and_o inward_a heart_n and_o how_o this_o be_v perform_v 3._o of_o the_o great_a effect_n of_o rarefaction_n 4._o the_o first_o manner_n of_o condensation_n by_o heat_n 5._o the_o second_o manner_n of_o condensation_n by_o cold_a 6._o that_o ice_n be_v not_o water_v rarify_v but_o condense_v 7._o how_o wind_n snow_n and_o hail_n be_v make_v and_o wind_n by_o rain_n allay_v 8._o how_o part_n of_o the_o same_o or_o divers_a body_n be_v join_v more_o strong_o together_o by_o condensation_n 9_o vacuity_n can_v be_v the_o reason_n why_o water_n impregnate_v to_o the_o full_a with_o one_o kind_n of_o salt_n will_v notwithstanding_o receive_v more_o of_o another_o 10._o the_o true_a reason_n of_o the_o former_a effect_n 11._o the_o reason_n why_o body_n of_o the_o same_o nature_n do_v join_v more_o easy_o together_o than_o other_o chap._n xviii_o of_o another_o motion_n belong_v to_o particular_a body_n call_v attraction_n and_o of_o certain_a operation_n term_v magical_a 1._o what_o attraction_n be_v and_o from_o whence_o it_o proceed_v 2._o the_o true_a sense_n of_o the_o maxim_n that_o nature_n abhor_v from_o vacuity_n 3._o the_o true_a reason_n of_o attraction_n 4._o water_n may_v be_v bring_v by_o the_o force_n of_o attraction_n to_o what_o height_n soever_o 5._o the_o doctrine_n touch_v the_o attraction_n of_o water_n in_o syphon_n 6._o that_o the_o syphon_n do_v not_o prove_v water_n to_o weigh_v in_o its_o own_o orb_n 7._o concern_v attraction_n cause_v by_o fire_n 8._o concern_v attraction_n make_v by_o virture_n of_o hot_a body_n amulet_n &c_n &c_n 9_o the_o natural_a reason_n give_v for_o divers_a operation_n esteem_v by_o some_o to_o be_v magical_a chap._n xix_o of_o three_o other_o motion_n belong_v to_o particular_a body_n filtration_n restitution_n and_o electrical_a attraction_n 1._o what_o be_v filtration_n and_o how_o it_o be_v effect_v 2._o what_o cause_v the_o water_n in_o filtration_n to_o ascend_v 3._o why_o the_o filter_n will_v not_o drop_v unless_o the_o label_n hang_v low_a than_o the_o water_n 4._o of_o the_o motion_n of_o restitution_n and_o why_o some_o body_n stand_v bend_v other_o not_o 5._o why_o some_o body_n return_v only_o in_o part_n to_o their_o natural_a figure_n other_o entire_o 6._o concern_v the_o nature_n of_o those_o body_n which_o shrink_v and_o stretch_v 7._o how_o great_a and_o wonderful_a effect_n proceed_v from_o small_a plain_a and_o simple_a principle_n 8._o concern_v electrical_a attratâ—on_n and_o the_o cause_n of_o it_o 9_o cabeus_n his_o opinion_n refute_v concern_v the_o cause_n of_o electrical_a motion_n chap._n xx._n of_o the_o lodestone_n generation_n and_o its_o particulas_fw-la motion_n 1._o the_o extreme_a heat_n of_o the_o sun_n under_o the_o zodiac_n draw_v a_o stream_n of_o air_n from_o each_o pole_n into_o the_o torrid_a zone_n 2._o the_o atom_n of_o these_o two_o stream_n come_v together_o be_v apt_a to_o incorporate_v with_o one_o another_o 3._o by_o the_o meeting_n and_o mingle_v together_o
of_o the_o great_a effect_n of_o rarefaction_n 4._o the_o first_o manner_n of_o condensation_n by_o heat_n 5._o the_o second_o manner_n of_o condensation_n by_o cold_a 3._o that_o ice_n be_v not_o water_v rarify_v but_o condense_v 7._o how_o wind_n snow_n and_o hail_n be_v make_v and_o wind_n by_o rain_n allay_v 8._o how_o part_n of_o the_o same_o or_o divers_a body_n be_v join_v more_o strong_o together_o by_o condensation_n 9_o vacuity_n can_v be_v the_o reason_n why_o water_n impregnate_v to_o the_o full_a with_o one_o kind_n of_o salt_n will_v notwithstanding_o receive_v more_o of_o another_o 10._o the_o true_a reason_n of_o the_o former_a effect_n 11._o the_o reason_n why_o body_n of_o the_o same_o nature_n join_v more_o easy_o together_o than_o other_o 1._o what_o attraction_n be_v and_o from_o whence_o it_o proceed_v 1._o the_o true_a sense_n of_o the_o maxim_n that_o nature_n abhor_v from_o vacuity_n 3._o the_o true_a rea_fw-la son_n of_o attraction_n 4._o water_n may_v be_v bring_v by_o the_o force_n of_o attraction_n to_o what_o height_n soever_o 5._o the_o doctrine_n touch_v the_o attraction_n of_o water_n in_o syphon_n 6._o that_o the_o syphon_n do_v not_o prove_v water_n to_o weigh_v in_o its_o own_o orb_n 7._o concern_v attraction_n cause_v by_o fire_n 8._o concern_v attraction_n make_v by_o virtue_n of_o hot_a body_n amulet_n etc._n etc._n 9_o the_o natural_a reason_n give_v for_o divers_a operation_n esteem_v by_o some_o to_o be_v magical_a 1._o what_o be_v filtration_n and_o how_o it_o be_v effect_v 2._o what_o cause_v the_o water_n in_o filtration_n to_o ascend_v 3._o why_o the_o filter_n will_v not_o drop_v unless_o the_o label_n hang_v low_a than_o the_o water_n 4._o of_o the_o motion_n of_o restitution_n and_o why_o some_o body_n stand_v bend_v other_o not_o 5._o why_o some_o bo_z die_v return_v only_o in_o part_n to_o their_o natural_a figure_n other_o entire_o 6._o concern_v the_o nature_n of_o those_o body_n which_o shrink_v and_o stretch_v 7._o how_o great_a &_o wonderful_a effect_n proceed_v from_o small_a plain_a and_o simple_a principle_n 8._o concern_v electrical_a at_o action_n and_o the_o cause_n of_o it_o 6._o cabeus_n his_o opinion_n reâ—uted_v concern_v the_o cause_n of_o electrical_a motion_n 1._o the_o extreme_a heat_n of_o the_o sun_n under_o the_o zodiac_n draw_v a_o stream_n of_o air_n from_o each_o pole_n into_o the_o torrid_a zone_n zone_n chap._n 18._o sect._n 7._o 2._o the_o atom_n of_o these_o two_o stream_n come_v together_o be_v apt_a to_o incorporate_v with_o one_o another_o 3._o by_o the_o meeting_n and_o mingle_v together_o of_o these_o stream_n at_o the_o equator_fw-la divers_a rivulet_n of_o atom_n of_o each_o pole_n be_v continuate_v from_o one_o pole_n to_o the_o other_o 4._o of_o these_o atom_n incorporate_v with_o some_o fit_a matter_n in_o the_o bowel_n of_o the_o earth_n be_v make_v a_o stone_n 5._o this_o stone_n work_v by_o emanation_n join_v with_o agree_v stream_n that_o meet_v they_o in_o the_o air_n and_o in_o fine_a it_o be_v a_o loadstone_n 6_o a_o method_n for_o make_v experience_n on_o any_o subject_n 7._o the_o lodestone_n generation_n by_o atom_n flow_v from_o both_o pole_n be_v confirm_v by_o experiment_n observe_v in_o the_o stone_n itself_o 8._o experiment_n to_o prove_v that_o the_o loadstone_n work_v by_o emanation_n meet_v with_o agree_v stream_n 1._o the_o operation_n of_o the_o loadstone_n be_v wrought_v by_o body_n and_o not_o by_o quality_n 2._o objection_n against_o the_o former_a position_n answer_v 3._o the_o loadstone_n be_v imbue_v with_o his_o virtue_n from_o another_o body_n 4_o the_o virtue_n of_o the_o loadstone_n be_v a_o double_a and_o not_o one_o simple_a virtue_n 5._o the_o virtue_n of_o the_o loadstone_n work_v more_o strong_o in_o the_o pole_n of_o it_o then_o in_o any_o other_o part_n 6._o the_o loadstone_n send_v forth_o its_o emanation_n spherical_o which_o be_v of_o two_o kindâ—_n and_o each_o kind_n be_v strong_a in_o that_o hemisphere_n through_o who_o polary_a part_n they_o issue_v out_o 7._o put_v two_o loadstone_n within_o the_o sphere_n of_o one_o another_o every_o part_n of_o one_o loadstone_n do_v not_o agree_v wâ—th_v every_o part_n of_o the_o other_o loadstone_n 8._o concetn_v the_o declination_n and_o other_o respect_n of_o a_o needle_n towards_o the_o loadstone_n it_o touch_v 8._o the_o virtue_n of_o the_o loadstone_n go_v from_o end_n to_o end_n in_o line_n almost_o parallel_v to_o the_o axis_n 10._o the_o virtue_n of_o the_o loadstone_n be_v not_o perfect_o spherical_a though_o the_o stone_n be_v such_o 11._o the_o intention_n of_o nature_n in_o all_o the_o operation_n of_o the_o loadstone_n be_v to_o make_v a_o union_n betwixt_o the_o attractive_a and_o attract_a body_n 12._o the_o main_a globe_n of_o the_o earth_n be_v not_o a_o loadstone_n 13._o the_o loadstone_n be_v generate_v in_o all_o part_n or_o climâ—t's_v of_o the_o earth_n 14._o the_o conformity_n betwixt_o the_o two_o motion_n of_o magnetic_a thing_n and_o of_o heavy_a thing_n 1._o which_o be_v the_o north_n and_o which_o the_o south_n pole_n of_o a_o loadstone_n 2._o whether_o any_o body_n beside_o magnetic_a one_o be_v attractive_a 3._o whether_o a_o iron_n place_v perpendicular_o towards_o the_o earth_n get_v a_o magnetical_a virtue_n of_o point_v towards_o the_o north_n or_o towards_o the_o south_n in_o that_o end_n that_o lie_v downward_o 4._o why_o loadstone_n affect_v iron_n better_o than_o one_o another_o 5._o gilbert_n reason_v refute_v touch_v a_o cape_v loadstone_n that_o take_v up_o more_o iron_n than_o one_o not_o cape_v and_o a_o iron_n impregnate_v that_o in_o some_o case_n draw_v more_o strong_o than_o the_o stone_n itself_o galileus_n his_o opinion_n touch_v the_o former_a effect_n refute_v 7._o the_o author_n solution_n to_o the_o former_a question_n 8._o the_o reason_n why_o in_o the_o former_a case_n a_o lesser_a lodestone_n draw_v the_o interjacent_a iron_n from_o the_o great_a 9_o why_o the_o variation_n of_o a_o touch_v needle_n from_o the_o north_n be_v great_a the_o near_a you_o go_v to_o the_o pole_n 10._o whether_o in_o the_o same_o part_n of_o the_o world_n a_o touch_v needle_n may_v it_o one_o time_n vary_v more_o fâ—om_n the_o north_n and_o at_o another_o time_n less_o 11._o the_o whâ—le_a doctrine_n of_o the_o loadstone_n sum_v up_o in_o short_a 1._o the_o connexion_n of_o the_o follow_a chapter_n with_o the_o precedent_a one_o 2._o concern_v several_a composition_n of_o mix_a body_n 3._o two_o sort_n of_o live_a creature_n 4._o a_o engine_n to_o express_v the_o first_o sort_n of_o live_a creature_n 5._o another_o engine_n by_o which_o may_v be_v express_v the_o second_o sort_n of_o live_a creature_n 4._o the_o two_o former_a engine_n and_o some_o other_o comparison_n apply_v to_o express_v the_o two_o several_a sort_n of_o live_a creature_n 7._o how_o plant_n be_v frame_v 8._o how_o sensitive_a creature_n be_v form_v 1._o the_o opinion_n that_o the_o seed_n contain_v formal_o every_o part_n of_o the_o parent_n 2._o the_o former_a opinion_n reject_v 3._o the_o author_n opinion_n of_o this_o question_n 4._o their_o opinion_n refute_v who_o hold_v that_o every_o thing_n contain_v formal_o all_o thing_n 5._o the_o author_n opinion_n concern_v the_o generation_n of_o animal_n declare_v and_o confirm_v that_o one_o substance_n be_v change_v into_o another_o 7._o concern_v the_o hatch_n of_o chicken_n and_o the_o generation_n of_o the_o other_o animal_n 8._o from_o whence_o it_o happen_v that_o the_o deficience_n or_o excresence_n of_o the_o parent_n body_n be_v often_o see_v in_o their_o child_n 9_o the_o difference_n between_o the_o author_n opinion_n anâ—â—he_v former_a 〈◊〉_d 10_o that_o the_o heart_n be_v imbue_v with_o the_o general_a specifike_n virtue_n of_o the_o whole_a body_n whereby_o be_v confirm_v the_o doctrine_n of_o the_o two_o former_a paragraphes_n 11_o that_o the_o heart_n be_v the_o first_o part_n generate_v in_o a_o live_a creature_n 1._o that_o the_o figure_n of_o a_o animal_n be_v produce_v by_o ordinary_a second_o cause_n as_o well_o as_o any_o other_o corporeal_a effect_n 2._o that_o the_o several_a figure_n of_o body_n proceed_v from_o a_o defect_n in_o one_o of_o three_o dimension_n cause_v by_o the_o circumference_n of_o accidental_a cause_n 3._o the_o former_a doctrine_n be_v confirm_v by_o several_a instance_n 4._o the_o same_o doctrine_n apply_v to_o plant_n 4._o the_o same_o doctrine_n declare_v in_o leaf_n of_o tree_n 16._o the_o same_o apply_v to_o the_o body_n of_o animal_n 7._o in_o what_o sense_n the_o author_n admit_v of_o vis_fw-la formatrix_fw-la 1._o from_o whence_o proceed_v the_o primary_n motion_n &_o growth_n in_o plant_n 2._o mr._n des_fw-fr cartes_n his_o opinion_n touch_v the_o motion_n of_o the_o heart_n 3._o the_o former_a opinion_n reject_v 4._o the_o author_n opinion_n
quality_n it_o will_v always_o produce_v a_o equal_a to_o itself_o 5._o the_o three_o reason_n because_o if_o we_o imagine_v to_o our_o selve_v the_o substance_n of_o fire_n to_o be_v rarify_v it_o will_v have_v the_o same_o appearance_n which_o light_n have_v 6._o the_o four_o reason_n from_o the_o manner_n of_o the_o generation_n and_o corruption_n of_o light_n which_o agree_v with_o fire_n 7._o the_o five_o reason_n because_o such_o property_n belong_v to_o light_a as_o agree_v only_o to_o body_n chap._n vii_o two_o objection_n answer_v a_o against_o light_n be_v fire_n a_o more_o ample_a proof_n of_o its_o be_v such_o 1._o that_o all_o light_n be_v hot_a and_o apt_a to_o heat_n 2._o the_o reason_n why_o our_o body_n for_o the_o most_o part_n do_v not_o feel_v the_o heat_n of_o pure_a light_n 3._o the_o experience_n of_o burn_a glass_n and_o of_o sultry_a gloomy_a weather_n prove_v light_a to_o be_v fire_n 4._o philosopher_n ought_v not_o to_o judge_n of_o thing_n by_o the_o rule_n of_o vulgar_a people_n 5._o the_o different_a name_n of_o light_n and_o fire_n proceed_v from_o different_a notion_n of_o the_o same_o substance_n 6._o the_o reason_n why_o many_o time_n fire_n and_o heat_n be_v deprive_v of_o light_n 7._o what_o become_v of_o the_o body_n of_o light_n when_o it_o die_v 8._o a_o experiment_n of_o some_o who_o pretend_v that_o light_n may_v be_v precipitate_v into_o powder_n 9_o the_o author_n opinion_n concern_v lamp_n pretend_v to_o have_v leen_n find_v in_o tomb_n with_o inconsumptible_a light_n chap._n viii_o 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 1._o light_n be_v not_o real_o in_o every_o part_n of_o the_o room_n it_o enlighten_v nor_o fill_v entire_o any_o sensible_a part_n of_o it_o though_o it_o seem_v to_o we_o to_o do_v so_o 2._o the_o least_o sensible_a point_n of_o a_o diaphanous_a body_n have_v room_n sufficient_a to_o contain_v both_o air_n and_o light_n together_o with_o a_o multitude_n of_o beam_n issue_v from_o several_a light_n without_o penetrate_v one_o another_o 3._o that_o light_n do_v not_o enlighten_v any_o room_n in_o a_o instant_n and_o that_o the_o great_a celerity_n of_o its_o motion_n make_v it_o imperceptible_a to_o our_o sense_n 4._o the_o reason_n why_o the_o motion_n of_o light_n be_v not_o discern_v come_v towards_o we_o and_o that_o there_o be_v some_o real_a tardity_n in_o it_o 5._o the_o planet_n be_v not_o certain_o ever_o in_o that_o place_n where_o they_o appear_v to_o be_v 6._o the_o reason_n why_o light_n be_v a_o body_n do_v not_o by_o its_o motion_n shatter_v other_o body_n into_o piece_n 7._o the_o reason_n why_o the_o body_n of_o light_n be_v never_o perceive_v to_o be_v fan_v by_o the_o wind_n 8._o the_o reason_n for_o and_o against_o light_n be_v a_o body_n compare_v together_o 9_o a_o summary_n repetition_n of_o the_o reason_n which_o prove_v that_o light_n be_v fire_n chap._n ix_o of_o local_a motion_n in_o common_a 1._o no_o local_a motion_n can_v be_v perfor_v without_o succession_n 2._o time_n be_v the_o common_a measure_n of_o all_o succession_n 3._o what_o velocity_n be_v and_o that_o it_o can_v be_v infinite_a 4._o no_o force_n so_o little_a but_o be_v able_a to_o move_v the_o great_a weight_n imâ—nable_a 5._o the_o chief_a principle_n of_o mechanic_n deduce_v out_o of_o the_o former_a discourse_n 6._o no_o movable_a can_v pass_v from_o rest_n to_o any_o determinate_a degree_n of_o velocity_n or_o from_o a_o lesser_a degree_n to_o a_o great_a without_o pass_v through_o all_o the_o intermediate_v degree_n which_o be_v below_o the_o obtain_a degree_n 7._o the_o condition_n which_o help_v to_o motion_n in_o the_o movable_a be_v three_o in_o the_o medium_n one_o 8._o no_o body_n have_v any_o intrinsical_v virtue_n to_o move_v itself_o towards_o any_o determinate_a part_n of_o the_o universe_n 9_o the_o increase_n of_o motion_n be_v always_o make_v in_o the_o proportion_n of_o the_o odd_a number_n 20._o no_o motion_n can_v increase_v for_o ever_o or_o without_o come_v to_o a_o period_n 11._o certain_a problem_n resolve_v concern_v the_o proportion_n of_o some_o move_a agent_n compare_v to_o their_o effect_n 12._o when_o a_o movable_a come_v to_o rest_n the_o motion_n decrease_v according_a to_o the_o rule_n of_o increase_n chap._n x._o of_o gravity_n and_o levity_n and_o of_o local_a motion_n common_o term_v natural_a 1._o those_o motion_n be_v call_v natural_a which_o have_v constant_a cause_n and_o those_o violent_a which_o be_v contrary_a to_o they_o 2._o the_o first_o and_o most_o general_a opeperation_n of_o the_o sun_n be_v the_o make_n and_o raise_v of_o atom_n 3._o the_o light_n rebound_v from_o the_o earth_n with_o atom_n cause_v two_o stream_n in_o the_o air_n the_o one_o ascend_v the_o other_o descend_v and_o both_o of_o they_o in_o a_o perpendicular_a line_n 4._o a_o dense_a body_n place_v in_o the_o air_n between_o the_o ascend_a and_o descend_v stream_n must_v needs_o descend_v 5._o a_o more_o particular_a explication_n of_o all_o the_o former_a doctrine_n touch_v gravity_n 6._o gravity_n and_o levity_n do_v not_o signify_v a_o intrinsical_v inclination_n to_o such_o a_o motion_n in_o the_o body_n themselves_o which_o be_v term_v heavy_a and_o light_a 7._o the_o more_o dense_a a_o body_n be_v the_o more_o swift_o it_o descend_v 8._o the_o velocity_n of_o body_n descend_v do_v not_o increase_v in_o proportion_n to_o the_o difference_n that_o may_v be_v between_o their_o several_a density_n 9_o more_n or_o less_o gravity_n produce_v a_o swift_a or_o a_o slow_a descend_v of_o a_o heavy_a body_n aristotle_n argument_n to_o disprove_v motion_n in_o vacuo_fw-la be_v make_v good_a 10._o the_o reason_n why_o at_o the_o inferior_a quarter_n of_o a_o circle_n a_o body_n descend_v fast_a by_o the_o arch_n of_o that_o quarter_n than_o by_o the_o cord_n of_o it_o chap._n xi_o a_o answer_n to_o objection_n against_o the_o cause_n of_o natural_a motion_n avow_v in_o the_o former_a chapter_n and_o a_o refutation_n of_o the_o contrary_a opinion_n 1._o the_o first_o objection_n answer_v why_o a_o hollow_a body_n descend_v slow_a than_o a_o solid_a one_o 2._o the_o second_o objection_n answer_v and_o the_o reason_n show_v why_o atom_n do_v continual_o overtake_v the_o descend_v dense_a body_n 3._o a_o curious_a question_n leave_v undecided_a 4._o the_o four_o objection_n answer_v why_o the_o descent_n of_o the_o same_o heavy_a body_n be_v equal_a in_o so_o great_a inequality_n of_o the_o atom_n which_o cause_v it_o 5._o the_o reason_n why_o the_o shelter_n of_o a_o thick_a body_n do_v not_o hinder_v the_o descent_n of_o that_o which_o be_v under_o it_o 6._o the_o reason_n why_o some_o body_n sink_v other_o swim_v 7._o the_o five_o objection_n answer_v concern_v the_o descend_v of_o heavy_a body_n in_o stream_n 8._o the_o six_o objection_n answer_v and_o that_o all_o heavy_a element_n do_v weigh_v in_o their_o own_o sphere_n 9_o the_o seven_o objection_n answer_v and_o the_o reason_n why_o we_o do_v not_o feel_v the_o course_n of_o the_o air_n and_o atom_n that_o beat_v continual_o upon_o we_o 10._o how_o in_o the_o same_o body_n gravity_n may_v be_v great_a than_o density_n and_o density_n than_o gravity_n though_o they_o be_v the_o same_o thing_n 11._o the_o opinion_n of_o gravity_n be_v a_o intrinsical_a inclination_n of_o a_o body_n to_o the_o centea_fw-la refute_v by_o reason_n 12._o the_o same_o opinion_n refuted_o several_a experience_n chap._n xii_o of_o violent_a motion_n 1._o the_o state_n of_o the_o question_n touch_v the_o cause_n of_o violent_a motion_n 2._o that_o the_o medium_n be_v the_o only_a cause_n which_o continue_v violent_a motion_n 3._o a_o further_a explication_n of_o the_o former_a doctrine_n 4._o that_o the_o air_n have_v strength_n enough_o to_o continue_v violent_a motion_n in_o a_o movable_a 5._o a_o answer_n to_o the_o first_o objection_n that_o air_n be_v not_o apt_a to_o conserve_v motion_n and_o how_o violent_a motion_n come_v to_o cease_v 6._o a_o answer_n to_o the_o second_o objection_n that_o the_o air_n have_v no_o power_n over_o heavy_a body_n 7._o a_o answer_n to_o the_o three_o objection_n that_o a_o arrow_n shall_v fly_v fast_o broad_a way_n than_o long_v way_n chap._n xiii_o of_o three_o sort_n of_o violent_a motion_n reflection_n undulation_n and_o refraction_n 1._o that_o reflection_n be_v a_o kind_n of_o violent_a motion_n 2._o reflection_n be_v make_v at_o equal_a angle_n 3._o the_o cause_n and_o property_n of_o undulation_n 4._o refraction_n at_o the_o entrance_n into_o the_o reflectent_a body_n be_v towards_o the_o perpendicular_a at_o the_o go_v out_o be_v from_o it_o when_o the_o second_o superficies_n be_v parallel_n to_o the_o first_o 5._o a_o refutation_n of_o mounseur_fw-fr des_fw-fr cartes_n his_o explication_n of_o
of_o these_o stream_n at_o the_o equator_fw-la divers_a rivulet_n of_o atom_n of_o each_o pole_n be_v continuate_v from_o one_o pole_n to_o the_o other_o 4._o of_o these_o atom_n incorporate_v with_o some_o fit_a matter_n in_o the_o bowel_n of_o the_o earth_n be_v make_v a_o stone_n 5._o this_o stone_n work_v by_o emanatition_n join_v with_o agree_v stream_n that_o meet_v they_o in_o the_o air_n and_o in_o fine_a it_o be_v a_o loadstone_n 6._o a_o method_n for_o make_v experience_n upon_o any_o subject_n 7._o the_o lodestone_n generation_n by_o atom_n flow_v from_o both_o pole_n be_v confirm_v by_o experiment_n observe_v in_o the_o stone_n itself_o 8._o experiment_n to_o prove_v that_o the_o loadstone_n work_v by_o emanation_n meet_v with_o agree_v stream_n chap._n xxi_o position_n draw_v out_o of_o the_o former_a doctrine_n and_o confirm_v by_o experimental_a proof_n 1._o the_o operation_n of_o the_o loadstone_n be_v wrought_v by_o body_n and_o not_o by_o quality_n 2._o objection_n against_o the_o former_a position_n answer_v 3._o the_o loadstone_n be_v imbue_v with_o his_o virtue_n from_o another_o body_n 4._o the_o virtue_n of_o the_o loadstone_n be_v a_o double_a and_o not_o one_o simple_a virtue_n 5._o the_o virtue_n of_o the_o loadstone_n work_v more_o strong_o in_o the_o pole_n of_o it_o than_o in_o any_o other_o part_n 6._o the_o loadstone_n send_v forth_o its_o emanation_n spherical_o which_o be_v of_o two_o kind_n and_o each_o kind_n be_v strong_a in_o that_o hemisphere_n through_o who_o polary_a part_n they_o issue_v out_o 7._o put_v two_o loadstone_n within_o the_o sphere_n of_o one_o another_o every_o part_n of_o one_o loadstone_n do_v not_o agree_v with_o every_o part_n of_o the_o other_o loadstone_n 8._o concern_v the_o declination_n and_o other_o respect_n of_o a_o needle_n towards_o the_o loadstone_n it_o touch_v 9_o the_o virtue_n of_o the_o loadstone_n go_v from_o end_n to_o end_v in_o line_n almost_o parallel_v to_o the_o axis_fw-la 10._o the_o virtue_n of_o a_o loadstone_n be_v not_o perfect_o spherical_a though_o the_o stone_n be_v such_o 11._o the_o intention_n of_o nature_n in_o all_o the_o operation_n of_o the_o loadstone_n be_v to_o make_v a_o union_n betwixt_o the_o attractive_a and_o the_o attract_a body_n 12._o the_o main_a globe_n of_o the_o earth_n not_o a_o loadstone_n 13._o the_o loadstone_n be_v generate_v in_o all_o part_n or_o climate_n of_o the_o earth_n 14._o the_o conformity_n betwixt_o the_o two_o motion_n of_o magnetic_a thing_n and_o of_o heavy_a thing_n chap._n xxii_o a_o solution_n of_o certain_a problem_n concern_v the_o loadstone_n and_o a_o short_a sum_n of_o the_o whole_a doctrine_n touch_v it_o 1._o which_o be_v the_o north_n and_o which_o the_o south_n pole_n of_o a_o loadstone_n 2._o whether_o any_o body_n beside_o magnetic_a one_o be_v attractive_a 3._o whether_o a_o iron_n place_v perpendicular_o towards_o the_o earth_n do_v get_v a_o magnetical_a virtue_n of_o point_v towards_o the_o north_n or_o towards_o the_o south_n in_o that_o end_n that_o lie_v downward_o 4._o why_o loadstone_n affect_v iron_n better_o than_o one_o another_o 5._o gilbert_n reason_v refute_v touch_v a_o cap_a loadstone_n that_o take_v up_o more_o iron_n than_o one_o not_o cap_v and_o a_o iron_n impregnate_v that_o in_o some_o case_n draw_v more_o strong_o than_o the_o stone_n itself_o 6._o galileus_n his_o opinion_n touch_v the_o former_a effect_n refute_v 7._o the_o author_n solution_n to_o the_o former_a question_n 8._o the_o reason_n why_o in_o the_o former_a case_n a_o lesser_a load_n stone_n draw_v the_o interjacent_a iron_n from_o the_o great_a 9_o why_o the_o variation_n of_o a_o touch_v needle_n from_o the_o north_n be_v great_a the_o near_o you_o go_v to_o the_o pole_n 10._o whether_o in_o the_o same_o part_n of_o the_o world_n a_o touch_v needle_n may_v at_o one_o time_n vary_v more_o from_o the_o north_n and_o at_o another_o time_n less_o 11._o the_o whole_a doctrine_n of_o the_o load_n stone_n sum_v up_o in_o short_a chap._n xxiii_o a_o description_n of_o two_o sort_n of_o live_a creature_n plant_n and_o animal_n and_o how_o they_o be_v frame_v in_o common_a to_o perform_v vital_a motion_n 1._o the_o connexion_n of_o the_o follow_a chapter_n with_o the_o precedent_n 2._o concern_v several_a composition_n of_o mix_v body_n 3._o two_o sort_n of_o live_a creature_n 4._o a_o engine_n to_o express_v the_o first_o sort_n of_o live_a creature_n 5._o an_o other_o engine_n by_o which_o may_v be_v express_v the_o second_o sort_n of_o live_a creature_n 6._o the_o two_o former_a engine_n and_o some_o other_o comparison_n upply_v express_v 〈◊〉_d 〈◊〉_d 〈◊〉_d 〈◊〉_d of_o live_a creature_n 7._o how_o plant_n be_v frame_v 8._o how_o sensitive_a creature_n be_v form_v chap._n xxiv_o a_o more_o particular_a survey_n of_o the_o generation_n of_o animal_n in_o which_o be_v discover_v what_o part_n of_o the_o animal_n be_v first_o generate_v 1._o the_o opinion_n that_o the_o seed_n contain_v formal_o every_o part_n of_o the_o parent_n 2._o the_o former_a opinion_n reject_v 3._o the_o author_n opinion_n of_o this_o question_n 4._o their_o opinion_n refute_v who_o hold_v that_o every_o thing_n contain_v formal_o all_o thing_n 5._o the_o author_n opinion_n concern_v the_o generation_n of_o animal_n declare_v and_o confirm_v 6._o that_o one_o substance_n be_v change_v into_o another_o 7._o concern_v the_o â—atching_n of_o chicken_n and_o the_o generation_n of_o other_o animal_n 8._o from_o whence_o it_o open_v that_o the_o defiâ—_n 〈◊〉_d 〈◊〉_d â—scences_n of_o the_o 〈◊〉_d 〈◊〉_d 〈◊〉_d see_v in_o their_o child_n 9_o the_o difference_n between_o the_o author_n opinion_n and_o the_o former_a 10._o that_o the_o heart_n be_v jove_v with_o the_o generalâ—_n spâ—ific_a virtue_n of_o the_o whole_a body_n 〈◊〉_d confirm_v the_o doctrine_n of_o the_o two_o former_a paragraph_n 11._o that_o the_o heart_n be_v the_o first_o part_n generate_v in_o a_o live_a creature_n chap._n xxv_o how_o a_o plant_n or_o animal_n come_v to_o that_o figure_n it_o have_v 1._o that_o the_o figure_n of_o a_o animal_n be_v produce_v by_o ordinary_a second_o cause_n as_o well_o as_o any_o other_o corporeal_a effect_n 2._o that_o the_o several_a figure_n of_o body_n proceed_v from_o a_o defect_n in_o one_o of_o the_o three_o dimension_n cause_v by_o the_o concurrence_n of_o accidental_a cause_n 3._o the_o former_a doctrine_n be_v confirm_v by_o several_a instance_n 4._o the_o same_o doctrine_n apply_v to_o plant_n 5._o the_o same_o doctrine_n declare_v in_o leaf_n of_o tree_n 6._o the_o same_o apply_v to_o the_o body_n of_o animal_n 7._o in_o what_o sense_n the_o author_n admit_v of_o vis_fw-fr formatrix_fw-la chap._n xxvi_o how_o motion_n begin_v in_o live_v creature_n and_o of_o the_o motion_n of_o the_o heart_n circulation_n of_o the_o blood_n nutrition_n augmentation_n and_o corruption_n or_o death_n 1._o from_o whence_o proceed_v the_o primary_n motion_n and_o growth_n in_o plant_n 2._o mounseur_fw-fr des_fw-fr cartes_n his_o opinion_n touch_v the_o motion_n of_o the_o heart_n 3._o the_o former_a opinion_n reject_v 4._o the_o author_n opinion_n concern_v the_o motion_n of_o the_o heart_n 5._o the_o motion_n of_o the_o heart_n depend_v original_o of_o its_o fiber_n irrigate_v by_o blood_n 6._o a_o objection_n answer_v against_o the_o former_a doctrine_n 7._o the_o circulation_n of_o the_o blood_n and_o other_o effect_n that_o follow_v the_o motion_n of_o the_o heart_n 8._o of_o nutrition_n 9_o of_o augmentation_n 10._o of_o death_n and_o sickness_n chap._n xxvii_o of_o the_o motion_n of_o sense_n and_o of_o the_o sensible_a quality_n in_o gegeral_a &_o in_o particular_a of_o those_o which_o belong_v to_o touch_v taste_n and_o smell_a 1._o the_o connexion_n of_o the_o subsequent_a chapter_n with_o the_o precedent_n 2._o of_o the_o sense_n and_o sensible_a quality_n in_o general_a and_o of_o the_o end_n for_o which_o they_o serve_v 3._o of_o the_o sense_n of_o touch_v and_o that_o both_o it_o and_o its_o quality_n be_v body_n 4._o of_o the_o taste_n and_o its_o quality_n that_o they_o be_v body_n 5._o that_o the_o smell_n and_o its_o quality_n be_v real_a body_n 6._o of_o the_o conformity_n betwixt_o the_o two_o sense_n of_o smell_v and_o taste_v 7._o the_o reason_n why_o the_o sense_n of_o smell_v be_v not_o so_o perfect_a in_o man_n as_o in_o beast_n with_o a_o wonderful_a history_n of_o a_o man_n who_o can_v wind_v send_v as_o well_o as_o any_o beast_n chap._n xxviii_o of_o the_o sense_n of_o hear_v and_o of_o the_o sensible_a quality_n sound_v 1._o of_o the_o sense_n of_o hear_v and_o that_o sound_n be_v pure_o motion_n 2._o of_o divers_a art_n belong_v to_o the_o sense_n of_o hear_v all_o which_o confirm_v that_o sound_n be_v nothing_o but_o motion_n 3._o the_o same_o be_v confirm_v by_o the_o effect_n cause_v
oftentimes_o work_v strange_a effect_n in_o their_o issue_n 4._o of_o antipathy_n 5._o of_o sympathy_n 6._o that_o the_o antipathy_n of_o beast_n towards_o one_o another_o may_v be_v take_v away_o by_o assuefaction_n 7._o of_o long_a mark_n see_v in_o child_n 8._o why_o divers_a man_n hate_v some_o certain_a meat_n &_o particular_o cheese_n 9_o concern_v the_o providence_n of_o ant_n in_o lay_v up_o in_o store_n for_o winter_n 10._o concern_v the_o foreknowing_a of_o beast_n the_o conclusion_n of_o the_o first_o treatise_n table_n of_o the_o second_o treatise_n concern_v man_n soul_n preface_n chap._n i._o of_o simple_a apprehension_n 1_o what_o be_v a_o right_a apprehension_n of_o a_o thing_n 2._o the_o very_a thing_n itself_o be_v true_o in_o his_o understanding_n who_o right_o apprehend_v it_o 3._o the_o apprehension_n of_o thing_n come_v to_o we_o by_o our_o sense_n be_v resolvable_a into_o other_o more_o simple_a apprehension_n 4._o the_o apprehension_n of_o a_o be_v be_v the_o most_o simple_a and_o basis_n of_o all_o the_o rest_n 5._o the_o apprehension_n of_o a_o thing_n be_v in_o next_o degree_n to_o that_o of_o be_v and_o it_o be_v the_o basis_n of_o all_o the_o subsequent_a one_o 6._o the_o apprehension_n of_o thing_n know_v to_o we_o by_o our_o sense_n consist_v in_o certain_a respect_n betwixt_o two_o thing_n 7._o respect_n or_o relation_n have_v not_o real_o any_o formal_a be_v but_o only_o in_o the_o apprehension_n of_o man_n 8._o that_o existence_n or_o be_v be_v the_o proper_a affection_n of_o man_n and_o that_o man_n soul_n be_v a_o compare_v power_n 9_o a_o thing_n by_o come_v into_o the_o understanding_n of_o man_n lose_v nothing_o of_o its_o own_o peculiar_a nature_n 10._o a_o multitude_n of_o thing_n may_v be_v unite_v in_o man_n understanding_n without_o be_v mingle_v or_o confound_v together_o 11._o of_o abstract_a and_o concrete_a term_n 12._o of_o universal_a notion_n 13._o of_o apprehend_v a_o multitude_n under_o one_o notion_n 14._o the_o power_n of_o the_o understanding_n reach_v as_o far_o as_o the_o extent_n of_o be_v chap._n ii_o of_o think_v and_o know_v 1._o how_o a_o judgement_n be_v make_v by_o the_o understanding_n 2._o that_o two_o or_o more_o apprehension_n be_v identify_v in_o the_o soul_n by_o unite_n they_o in_o the_o stock_n of_o be_v 3._o how_o the_o notion_n of_o a_o substantive_a &_o a_o adjective_n be_v unite_v in_o the_o soul_n by_o the_o common_a stock_n of_o be_v 4._o that_o a_o settle_a judgement_n become_v a_o part_n of_o our_o soul._n 5._o how_o the_o soul_n come_v to_o deem_v or_o settle_v a_o judgement_n 6._o how_o opinion_n be_v beget_v in_o the_o understanding_n 7._o how_o faith_n be_v beget_v in_o the_o unstanding_n 8._o why_o truth_n be_v the_o perfection_n of_o a_o reasonable_a soul_n and_o why_o it_o be_v not_o find_v in_o simple_a apprehension_n as_o well_o as_o in_o enuntiation_n 9_o what_o be_v a_o solid_a judgement_n and_o what_o a_o slight_a one_o 10._o what_o be_v a_o acute_a judgement_n and_o what_o a_o dull_a one_o 11._o in_o what_o consist_v quickness_n and_o clearness_n of_o judgement_n and_o their_o opposite_a vice_n chap._n iii_o of_o discourse_v 1._o how_o discourse_n be_v make_v 2._o of_o the_o figure_n and_o mood_n of_o syllogism_n 3._o that_o the_o life_n of_o man_n as_o man_n consist_v in_o discourse_n and_o of_o the_o vast_a extent_n of_o it_o 4._o of_o humane_a action_n and_o of_o those_o that_o concern_v our_o selus_fw-la 5._o of_o humane_a action_n as_o they_o concern_v our_o neighbour_n 6._o of_o logic_n 7._o of_o grammar_n 8._o of_o rhetoric_n 9_o of_o poetry_n 10._o of_o the_o power_n of_o speak_v 11._o of_o art_n that_o concern_v dumb_a and_o insensible_a creature_n 12._o of_o arithmetic_n 13._o of_o prudence_n 14._o observation_n upon_o what_o have_v be_v say_v in_o this_o chapter_n chap._n iu._n how_o a_o man_n proceed_v to_o action_n 1._o that_o humane_a action_n proceed_v from_o two_o several_a principle_n understanding_n and_o sense_n 2._o how_o our_o general_n and_o inbred_a maxim_n concur_v to_o humane_a action_n 3._o that_o the_o rule_n and_o maxim_n of_o art_n work_v positive_o in_o we_o though_o we_o think_v not_o of_o they_o 4._o how_o the_o understanding_n cast_v about_o when_o it_o want_v sufficient_a ground_n for_o action_n 5._o how_o reason_n rule_v over_o sense_n and_o passion_n 6._o how_o we_o recall_v our_o thought_n from_o distraction_n 7._o how_o reason_n be_v sometime_o overcome_v by_o sense_n and_o passion_n chap._n v._o contain_v proof_n out_o of_o our_o single_a apprehension_n that_o our_o soul_n be_v incorporeal_a 1._o the_o connexion_n of_o the_o subsequent_a chapter_n with_o the_o precedent_n 2._o the_o existence_n of_o corporeal_a thing_n in_o the_o soul_n by_o the_o power_n of_o apprehension_n prove_v she_o to_o be_v immaterial_a 3._o the_o notion_n of_o be_v which_o be_v innate_a in_o the_o soul_n prove_v the_o same_o 4._o the_o same_o be_v prove_v by_o the_o notion_n of_o respect_n 5._o that_o corporeal_a thing_n be_v spiritualise_v in_o the_o understanding_n by_o mean_n of_o the_o soul_n work_v in_o and_o by_o respect_n 6._o that_o the_o abstract_n of_o notion_n from_o all_o particular_a and_o individual_a accident_n prove_v the_o the_o immateriality_n of_o the_o soul._n 7._o that_o the_o universality_n of_o abstract_a notion_n prove_v the_o same_o 8._o that_o collective_a apprehension_n prove_v the_o same_o 9_o the_o operation_n of_o the_o soul_n draw_v always_o from_o multitude_n to_o unity_n prove_v the_o same_o 10._o the_o difference_n betwixt_o the_o notion_n of_o a_o thing_n in_o our_o understanding_n and_o the_o impression_n that_o correspond_v to_o the_o same_o thing_n in_o our_o fancy_n prove_v the_o same_o 11._o the_o apprehension_n of_o negation_n and_o privation_n prove_v the_o same_o chap._n vi_o contain_v proof_n out_o of_o our_o soul_n operation_n in_o know_v or_o deem_v any_o thing_n that_o she_o be_v of_o a_o spiritual_a nature_n 1._o the_o manner_n of_o judge_v or_o deem_v by_o apprehend_v two_o thing_n to_o be_v identify_v prove_v the_o soul_n to_o be_v immaterial_a 2._o the_o same_o be_v prove_v by_o the_o manner_n of_o apprehend_v opposition_n in_o a_o negative_a judgement_n 3._o that_o thing_n in_o themselves_o opposite_a to_o one_o another_o have_v no_o opposition_n in_o the_o soul_n prove_v the_o same_o 4._o that_o the_o first_o truth_n be_v identify_v to_o the_o soul._n 5._o that_o the_o soul_n have_v a_o infinite_a capacity_n and_o consequent_o be_v immaterial_a 6._o that_o the_o opposition_n of_o contradictory_n proposition_n in_o the_o soul_n prove_v her_o immateriality_n 7._o how_o proposition_n of_o eternal_a truth_n prove_v the_o immateriality_n of_o the_o soul._n chap._n vii_o that_o our_o discourse_v prove_v our_o soul_n to_o be_v incorporeal_a 1._o that_o in_o discourse_v the_o soul_n contain_v more_o in_o it_o at_o the_o same_o time_n than_o be_v in_o the_o phantasy_n which_o prove_v she_o to_o be_v immaterial_a 2._o that_o the_o nature_n of_o discourse_n prove_v the_o soul_n to_o be_v order_v to_o infinite_a knowledge_n and_o consequent_o immaterial_a 3._o that_o the_o most_o natural_a object_n of_o the_o soul_n be_v immaterial_a and_o consequent_o the_o soul_n herself_o be_v such_o chap._n viii_o cantain_v proof_n out_o of_o our_o manner_n of_o proceed_v to_o action_n that_o our_o soul_n be_v incorporeal_a 1._o that_o the_o soul_n be_v a_o power_n to_o order_v thing_n prove_v she_o to_o be_v immaterial_a 2._o that_o the_o soul_n be_v able_a to_o move_v without_o be_v move_v prove_v she_o to_o be_v immaterial_a 3._o that_o the_o soul_n proceed_v to_o action_n with_o a_o universality_n and_o indifferency_n prove_v the_o same_o 4._o that_o the_o quiet_a proceed_n of_o reason_n prove_v the_o same_o 5._o a_o conclusion_n of_o what_o have_v be_v say_v hitherto_o in_o this_o second_o treatise_n chap._n ix_o that_o our_o soul_n be_v a_o substance_n and_o immortal_a 1._o that_o man_n soul_n be_v a_o substance_n 2._o that_o man_n be_v compound_v of_o some_o other_o substance_n beside_o his_o body_n 3._o that_o the_o soul_n subsist_v of_o itself_o independent_o of_o the_o body_n 4._o two_o other_o argument_n to_o prove_v the_o same_o one_o positive_a the_o other_o negative_a 5._o the_o same_o be_v prove_v because_o the_o soul_n can_v be_v obnoxious_a to_o the_o cause_n of_o mortality_n 6._o the_o same_o be_v prove_v because_o the_o soul_n have_v no_o contrary_a 7._o the_o same_o be_v prove_v from_o the_o end_n for_o which_o the_o soul_n be_v create_v 8._o the_o same_o be_v prove_v because_o she_o can_v move_v without_o be_v move_v 9_o the_o same_o be_v prove_v from_o her_o manner_n of_o operation_n which_o be_v ground_v in_o be_v 10._o last_o it_o be_v prove_v from_o the_o science_n of_o morality_n the_o principle_n whereof_o will_v be_v destroy_v
if_o the_o soul_n be_v mortal_a chap._n x._o declare_v what_o the_o soul_n of_o a_o man_n separate_v from_o his_o body_n be_v and_o of_o her_o knowledge_n and_o manner_n of_o work_v 1._o that_o the_o soul_n be_v one_o simple_a know_a act_n which_o be_v a_o pure_a substance_n and_o nothing_o but_o substance_n 2._o that_o a_o separate_a soul_n be_v in_o no_o place_n and_o yet_o be_v not_o absent_a from_o any_o place_n 3._o that_o a_o separate_a soul_n be_v not_o in_o time_n nor_o subject_n to_o it_o 4._o that_o the_o soul_n be_v a_o active_a substance_n and_o all_o in_o it_o be_v activity_n 5._o a_o description_n of_o the_o soul_n 6._o that_o a_o separate_a soul_n know_v all_o that_o which_o she_o know_v whilst_o she_o be_v in_o her_o body_n 7._o that_o the_o least_o knowledge_n which_o the_o soul_n acquire_v in_o her_o body_n of_o any_o one_o thing_n cause_n in_o she_o when_o she_o be_v separate_v from_o her_o body_n a_o complete_a knowledge_n of_o all_o thing_n whatever_o 8._o a_o answer_n to_o the_o objection_n of_o some_o peripatetic_n who_o maintain_v the_o soul_n to_o perish_v with_o the_o body_n 9_o the_o former_a peripatetic_n refute_v out_o of_o aristotle_n 10._o the_o operation_n of_o a_o separate_a soul_n compare_v to_o her_o operation_n in_o her_o body_n 11._o that_o a_o separate_a soul_n be_v in_o a_o state_n of_o pure_a be_v and_o consequent_o immortal_a chap._n xi_o show_v what_o effect_n the_o divers_a manner_n of_o live_v in_o this_o world_n do_v cause_n in_o a_o soul_n after_o she_o be_v separate_v from_o her_o body_n 1._o that_o a_o soul_n in_o this_o life_n be_v subject_a to_o mutation_n and_o may_v be_v perfect_v in_o knowledge_n 2._o that_o the_o knowledge_n which_o a_o soul_n get_v in_o this_o life_n will_v make_v her_o knowledge_n in_o the_o next_o life_n more_o perfect_a and_o firm_a 3._o that_o the_o soul_n of_o man_n addict_v to_o science_n while_o they_o live_v here_o be_v more_o perfect_a in_o the_o next_o world_n than_o the_o soul_n of_o unlearned_a man_n 4._o that_o those_o soul_n which_o embrace_v virtue_n in_o this_o world_n will_v be_v most_o perfect_a in_o the_o next_o and_o those_o which_o embrace_v vice_n most_o miserable_a 5._o the_o state_n of_o a_o vicious_a soul_n in_o the_o next_o life_n 6._o the_o fundamenatl_n reason_n why_o as_o well_o happiness_n as_o misery_n be_v so_o excessive_a in_o the_o next_o life_n 7._o the_o reason_n why_o man_n soul_n require_v to_o be_v in_o a_o body_n and_o to_o live_v for_o some_o space_n of_o time_n join_v with_o it_o 8._o that_o the_o misery_n of_o the_o soul_n in_o the_o next_o world_n proceed_v out_o of_o the_o inequality_n and_o not_o out_o of_o the_o falsity_n of_o her_o judgement_n chap._n xii_o of_o the_o perseverance_n of_o a_o soul_n in_o the_o state_n she_o find_v herself_o in_o at_o her_o first_o separation_n from_o her_o body_n 1._o the_o explication_n and_o proof_n of_o that_o maxim_n that_o if_o the_o cause_n be_v in_o act_n the_o effect_n must_v also_o be_v 2._o the_o effect_n of_o all_o such_o agent_n as_o work_v instantaneous_o be_v complete_a in_o the_o first_o instant_n that_o the_o agent_n be_v put_v 3._o all_o pure_a spirit_n work_v instantaneous_o 4._o that_o a_o soul_n separate_v from_o her_o body_n can_v suffer_v any_o change_n after_o the_o first_o instant_n of_o her_o separation_n 5._o that_o temporal_a sin_n be_v just_o punish_v with_o eternal_a pain_n the_o conclusion_n preface_n this_o write_n be_v design_v to_o have_v see_v the_o light_n under_o the_o name_n of_o one_o treatise_n but_o afer_fw-la it_o be_v draw_v in_o paper_n as_o i_o cast_v a_o view_n over_o it_o i_o find_v the_o proaemial_a part_n which_o treat_v of_o body_n so_o ample_a in_o respect_n of_o the_o other_o which_o be_v the_o end_n of_o it_o and_o for_o who_o sake_n i_o meddle_v with_o it_o that_o i_o ready_o apprehend_v my_o reader_n will_v think_v i_o have_v go_v much_o astray_o from_o my_o text_n when_o propose_v to_o speak_v of_o the_o immortality_n of_o man_n soul_n three_o part_n of_o four_o of_o the_o whole_a discourse_n shall_v not_o so_o much_o as_o in_o one_o word_n mention_v that_o soul_n who_o nature_n and_o propriety_n i_o aim_v at_o the_o discovery_n of_o to_o avoid_v this_o incongruity_n occasion_v i_o to_o change_v the_o name_n and_o unity_n of_o the_o work_n and_o to_o make_v the_o survey_n of_o body_n a_o body_n by_o itself_o though_o subordinate_a to_o the_o treatise_n of_o the_o soul_n which_o notwithstanding_o it_o be_v less_o in_o bulk_n than_o the_o other_o yet_o i_o dare_v promise_v my_o reader_n that_o if_o he_o bestow_v the_o painsr_n equisite_a to_o perfect_v himself_o in_o it_o he_o will_v find_v as_o much_o time_n well_o spend_v in_o the_o due_a read_n of_o it_o as_o in_o the_o read_n of_o the_o former_a treatise_n though_o far_o more_o large_a but_o i_o discern_v a_o objection_n obvious_a to_o be_v make_v or_o rather_o a_o question_n why_o i_o shall_v spend_v so_o much_o time_n in_o the_o consideration_n of_o body_n whereas_o none_o that_o have_v former_o write_v of_o this_o subject_a have_v in_o any_o measure_n do_v the_o like_a i_o may_v answer_v that_o they_o have_v on_o other_o occasion_n first_o write_v of_o the_o nature_n of_o body_n as_o i_o may_v instance_n in_o aristotle_n and_o sundry_a other_o who_o either_o have_v themselves_o profess_o treat_v the_o science_n of_o body_n or_o have_v suppose_v that_o part_n sufficient_o perform_v by_o other_o pen_n but_o true_o i_o be_v by_o a_o unavoidable_a necessity_n hereto_o oblige_v which_o be_v a_o current_n of_o doctrine_n that_o at_o this_o day_n much_o reign_v in_o the_o christian_a school_n where_o body_n and_o their_o overation_n be_v explicate_v after_o the_o manner_n of_o spiritual_a thing_n for_o we_o have_v very_o slender_a knowledge_n of_o spiritual_a substance_n can_v reach_v no_o further_o into_o their_o nature_n than_o to_o know_v that_o they_o have_v certain_a power_n or_o quality_n but_o can_v seldom_o penetrate_v so_o deep_a as_o to_o descend_v to_o the_o particular_n of_o such_o quality_n or_o power_n now_o our_o modern_a philosopher_n have_v introduce_v such_o a_o course_n of_o learning_n into_o the_o school_n that_o to_o all_o question_n concern_v the_o proper_a nature_n of_o body_n and_o their_o operation_n it_o be_v hold_v sufficient_a to_o answer_v they_o have_v a_o quality_n or_o a_o power_n to_o do_v such_o a_o thing_n and_o afterward_o they_o dispute_v whether_o this_o quality_n or_o power_n be_v a_o entity_n distinct_a from_o its_o subject_n or_o no_o and_o how_o it_o be_v separable_a or_o unseparable_a from_o it_o and_o the_o like_a consormable_a to_o this_o who_o will_v look_v into_o the_o book_n which_o be_v in_o vogue_n in_o these_o school_n shall_v find_v such_o answer_n and_o such_o controversy_n every_o where_o and_o few_o other_o as_o of_o the_o sensible_a qality_n ask_v what_o it_o be_v to_o be_v white_a or_o red_a what_o to_o be_v sweet_a or_o sour_a what_o to_o be_v odoriferous_a or_o stink_a what_o to_o be_v cold_a or_o hot_a and_o you_o be_v present_o pay_v with_o that_o it_o be_v a_o sensible_a quality_n which_o have_v the_o power_n to_o make_v a_o wall_n white_z or_o red_a to_o make_v a_o meat_n agreeable_a or_o disagreeable_a to_o the_o taste_n to_o make_v a_o grateful_a or_o ungrateful_a smell_n to_o the_o nose_n etc._n etc._n likewise_o they_o make_v the_o same_o question_n and_o resolution_n of_o gravity_n and_o levity_n as_o whether_o they_o be_v quality_n that_o be_v entity_n distinct_a from_o their_o subject_n and_o whether_o they_o be_v active_a or_o passive_a which_o when_o they_o have_v dispute_v slight_o and_o in_o common_a with_o logical_a argument_n they_o rest_v there_o without_o any_o further_o search_v into_o the_o physical_a cause_n or_o effect_n of_o they_o the_o like_v you_o shall_v find_v of_o all_o strange_a effect_n of_o they_o the_o loadstone_n and_o electrical_a body_n be_v produce_v for_o miraculous_a and_o not_o understandable_a thing_n and_o which_o must_v be_v acknowledge_v to_o work_v by_o hide_a quality_n that_o man_n wit_n can_v reach_v to_o and_o ascend_v to_o live_v body_n they_o give_v it_o for_o a_o maxim_n that_o life_n be_v the_o action_n of_o the_o same_o entity_n upon_o itself_o that_o sense_n be_v likewise_o a_o work_n of_o a_o intrinsical_a power_n in_o the_o part_n we_o call_v sense_n upon_o itself_o which_o our_o predecessor_n hold_v the_o great_a absurdity_n that_o can_v be_v speak_v in_o philosophy_n even_o some_o physician_n that_o take_v upon_o they_o to_o teach_v the_o cure_n of_o our_o body_n often_o pay_v we_o with_o such_o term_n among_o they_o you_o have_v long_a discourse_n of_o a_o retentive_a of_o a_o expulsive_a of_o a_o purge_n of_o a_o consolidating_a faculty_n
will_v pierce_v &_o cut_v out_o the_o water_n almost_o into_o as_o little_a part_n as_o themselves_o and_o mingle_v themselves_o with_o they_o they_o will_v fly_v away_o together_o and_o so_o convert_v the_o whole_a body_n of_o water_n into_o subtle_a smoke_n whereas_o the_o same_o agent_n after_o long_o work_v upon_o lead_n will_v bring_v it_o into_o no_o less_o part_n then_o small_a grain_n of_o dust_n which_o it_o calcines_fw-la it_o into_o and_o gold_n that_o be_v more_o dense_a than_o lead_v resist_v peremptory_o all_o the_o divide_v power_n of_o fire_n and_o will_v not_o at_o all_o be_v reduce_v into_o a_o calx_fw-la or_o lime_n by_o such_o operation_n as_o reduce_v lead_n into_o it_o so_o that_o remember_v how_o the_o nature_n of_o quantity_n be_v divisibility_n and_o consider_v that_o rare_a thing_n be_v more_o divisible_a than_o dense_a one_o we_o must_v needs_o acknowledge_v that_o the_o nature_n of_o quantity_n be_v some_o way_n more_o perfect_o in_o thing_n that_o be_v 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foot_n he_o about_o the_o 90._o page_n of_o his_o first_o dialogue_n of_o motion_n clear_o demonstrate_v how_o any_o real_a medium_n must_v of_o necessity_n resist_v more_o the_o descent_n of_o a_o little_a piece_n of_o lead_n or_o any_o other_o weighty_a matter_n than_o it_o will_v a_o great_a piece_n and_o the_o resistance_n will_v be_v great_a and_o great_a as_o the_o piece_n be_v lesser_a and_o lesser_a so_o that_o as_o the_o piece_n be_v make_v less_o they_o will_v in_o the_o same_o medium_n sink_v the_o flower_n and_o seem_v to_o have_v acquire_v a_o new_a nature_n of_o lightness_n by_o the_o diminution_n not_o only_o of_o have_v less_o weight_n in_o they_o than_o they_o have_v as_o half_o a_o ounce_n be_v less_o than_o a_o whole_a ounce_n but_o also_o of_o have_v in_o themselves_o a_o less_o proportion_n of_o weight_n to_o their_o bulk_n than_o they_o have_v as_o a_o pound_n of_o cork_n be_v in_o regard_n of_o its_o magnitude_n light_a than_o a_o pound_n of_o lead_n so_o as_o they_o conclude_v that_o the_o thing_n who_o continue_a part_n be_v the_o lesser_a be_v in_o its_o own_o nature_n the_o light_a and_o the_o rare_a and_o other_o thing_n who_o continue_a part_n be_v great_a be_v heavy_a and_o denser_n but_o this_o discourse_n reach_v not_o home_n for_o by_o it_o the_o weight_n of_o any_o body_n be_v discover_v by_o the_o proportion_n it_o have_v to_o the_o medium_n discover_v in_o which_o it_o descend_v it_o must_v ever_o suppose_v a_o body_n light_a than_o itself_o in_o which_o it_o may_v sink_v and_o go_v to_o the_o bottom_n now_o of_o that_o light_a body_n i_o inquire_v what_o make_v it_o be_v so_o and_o you_o must_v answer_v by_o what_o you_o have_v conclude_v that_o it_o be_v light_a than_o the_o other_o because_o the_o part_n of_o it_o be_v less_o and_o moreseverd_v from_o one_o another_o for_o if_o they_o be_v as_o close_v together_o their_o division_n avail_v they_o nothing_o since_o thing_n stick_v fast_o together_o work_v as_o if_o they_o be_v 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man_n that_o see_v the_o divider_n be_v the_o agent_n in_o division_n and_o in_o local_a motion_n and_o dense_a body_n be_v by_o their_o nature_n divider_v the_o earth_n must_v in_o that_o regard_n be_v the_o most_o active_a among_o the_o element_n since_o it_o be_v the_o most_o dense_a of_o they_o all_o but_o this_o seem_v to_o be_v against_o the_o common_a judgement_n of_o all_o the_o searcher_n of_o nature_n who_o unamimous_o agree_v that_o fire_n be_v the_o most_o active_a element_n as_o also_o it_o seem_v to_o impugn_v what_o we_o ourselves_o have_v determine_v when_o we_o say_v there_o be_v two_o active_a quality_n heat_n and_o cold_a whereof_o the_o first_o be_v in_o its_o great_a excess_n in_o fire_n and_o the_o latter_a in_o water_n to_o reconcile_v these_o we_o be_v to_o consider_v that_o the_o action_n of_o cold_a in_o its_o great_a height_n be_v compose_v of_o two_o part_n the_o one_o be_v a_o kind_n of_o press_v and_o the_o other_o be_v penetration_n which_o require_v 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activity_n and_o the_o great_a activity_n show_v a_o great_a percussion_n burn_v being_n 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 evident_o convince_v that_o of_o its_o own_o nature_n it_o make_v a_o sting_v 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 rarefy_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 parrticular_o and_o seek_v the_o cause_n why_o a_o violent_a effect_n do_v not_o always_o appear_v wherever_o light_n strike_v for_o which_o we_o be_v to_o note_v that_o three_o thing_n 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 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be_v say_v that_o density_n have_v in_o it_o a_o power_n of_o divide_v and_o that_o rarity_n be_v the_o cause_n of_o be_v divide_v likewise_o we_o have_v say_v that_o fire_n by_o reason_n of_o its_o small_a part_n intow_v ch_o it_o may_v be_v cut_v which_o make_v they_o sharp_a have_v also_o a_o eminence_n in_o divide_v so_o that_o we_o have_v two_o quality_n density_n and_o tenuity_n or_o sharpness_n which_o concur_v active_o to_o division_n we_o have_v tell_v motion_n you_o also_o how_o galileus_n have_v demonstrate_v that_o a_o great_a quantity_n of_o the_o same_o figure_n and_o density_n have_v a_o privilege_n of_o descend_v fast_o than_o a_o lesser_a and_o that_o privilege_n consist_v in_o this_o that_o the_o proportion_n of_o the_o superficies_n to_o the_o body_n it_o limit_n which_o proportion_n the_o great_a it_o be_v the_o more_o it_o retard_v be_v less_o in_o a_o great_a bulk_n than_o in_o a_o small_a we_o have_v therefore_o three_o condition_n concur_v to_o make_v the_o 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only_a rarity_n and_o density_n the_o one_o to_o help_v the_o other_o to_o hinder_v that_o require_v consideration_n on_o its_o side_n for_o neither_o figure_n nor_o littleness_n and_o greatness_n do_v make_v any_o variation_n in_o it_o and_o as_o for_o the_o agent_n it_o be_v not_o as_o yet_o time_n before_o we_o have_v look_v further_o into_o the_o nature_n of_o motion_n to_o determine_v his_o quality_n now_o then_o let_v we_o reflect_v how_o these_o three_o condition_n do_v all_o agree_v in_o this_o circumstance_n that_o they_o help_v nothing_o to_o division_n unless_o the_o body_n in_o which_o they_o be_v to_o be_v move_v and_o press_v against_o universe_n the_o body_n that_o be_v to_o be_v divide_v so_o that_o we_o see_v no_o principle_n to_o persuade_v we_o that_o any_o body_n can_v move_v itself_o towards_o any_o determinate_a part_n or_o place_n of_o the_o universe_n of_o its_o own_o intrinsical_a inclination_n for_o beside_o that_o the_o learned_a author_n of_o the_o dialogue_n de_fw-fr mundo_fw-la in_o his_o three_o dialogue_n and_o the_o second_o knot_n have_v demonstrate_v that_o a_o body_n can_v move_v unless_o it_o be_v move_v by_o some_o extrinsical_a agent_n we_o may_v easy_o frame_v to_o ourselves_o a_o conceit_n how_o absurd_a it_o be_v to_o think_v that_o a_o body_n by_o a_o quality_n in_o it_o can_v work_v upon_o itself_o as_o if_o we_o shall_v say_v that_o rarity_n which_o be_v but_o more_o quantity_n can_v work_v upon_o quantity_n or_o that_o figure_n which_o be_v but_o that_o the_o body_n reach_v no_o further_a can_v work_v upon_o the_o body_n and_o in_o general_a that_o the_o manner_n of_o any_o thing_n can_v work_v upon_o that_o thing_n who_o manner_n it_o be_v for_o aristotle_n and_o st._n thomas_n and_o their_o intelligent_a commentator_n declare_v the_o notion_n of_o quality_n tell_v we_o that_o to_o be_v a_o quality_n be_v nothing_o else_o but_o to_o be_v the_o determination_n or_o modification_n of_o the_o thing_n who_o quality_n it_o be_v beside_o the_o natural_a manner_n of_o operation_n be_v to_o work_v according_a to_o the_o capacity_n of_o the_o subject_n but_o when_o a_o body_n be_v in_o the_o midst_n of_o a_o uniform_a medium_n or_o space_n the_o subject_n be_v equal_o prepare_v on_o all_o side_n to_o receive_v the_o action_n of_o that_o body_n wherefore_o though_o we_o shall_v allow_v it_o a_o force_n to_o move_v if_o it_o be_v a_o natural_a agent_n and_o have_v no_o understanding_n it_o must_v work_v indifferent_o on_o all_o side_n and_o by_o consequence_n can_v move_v on_o any_o side_n for_o if_o you_o say_v that_o the_o agent_n in_o this_o case_n where_o the_o medium_n be_v uniform_a work_v rather_o upon_o one_o side_n than_o upon_o another_o it_o must_v be_v because_o this_o determination_n be_v within_o the_o agent_n itself_o and_o not_o out_o of_o the_o circumstant_fw-la disposition_n which_o be_v the_o manner_n of_o work_v of_o those_o substance_n that_o work_v for_o a_o end_n of_o their_o own_o that_o be_v of_o understand_a creature_n and_o not_o of_o natural_a hody_n now_o he_o that_o will_v exact_o determine_v what_o motion_n a_o body_n have_v or_o be_v apt_a to_o have_v determine_v by_o supposition_n the_o force_n of_o number_n the_o agent_n must_v calculate_v the_o proportion_n of_o all_o these_o three_o condition_n of_o the_o movable_a and_o the_o quality_n of_o the_o medium_n which_o be_v a_o proceed_n too_o particular_a for_o the_o intention_n of_o our_o discourse_n but_o to_o speak_v in_o common_a it_o will_v not_o be_v amiss_o to_o examine_v in_o what_o proportion_n motion_n do_v increase_v since_o we_o have_v conclude_v that_o all_o motion_n proceed_v from_o quiet_a by_o a_o continual_a increase_n galileus_n that_o miracle_n of_o our_o age_n and_o who_o wit_n be_v able_a to_o discover_v whatever_o he_o have_v a_o mind_n to_o employ_v it_o about_o have_v tell_v we_o that_o natural_a motion_n increase_v in_o the_o proportion_n of_o the_o odd_a number_n which_o to_o express_v by_o example_n be_v thus_o suppose_v that_o in_o the_o go_n of_o the_o first_o yard_n it_o have_v one_o degree_n of_o velocity_n then_o in_o the_o go_n of_o the_o second_o yard_n it_o will_v have_v three_o degree_n and_o in_o go_v of_o the_o three_o it_o will_v have_v five_o and_o so_o onward_o still_o add_v two_o to_o the_o degree_n of_o the_o velocity_n for_o every_o one_o to_o the_o space_n or_o to_o express_v it_o more_o plain_o if_o in_o the_o first_o minute_n of_o time_n it_o go_v one_o yard_n of_o space_n then_o in_o the_o next_o minute_n it_o will_v go_v three_o yard_n in_o the_o three_o it_o will_v go_v five_o in_o the_o four_o seven_o and_o so_o forth_o but_o we_o must_v enlarge_v this_o proposition_n to_o all_o motion_n as_o we_o have_v do_v the_o former_a of_o the_o increase_n itself_o in_o velocity_n because_o the_o reason_n of_o it_o be_v common_a to_o all_o motion_n which_o be_v that_o all_o motion_n as_o may_v appear_v out_o of_o what_o we_o have_v former_o say_v proceed_v from_o two_o cause_n namely_o the_o agent_n or_o the_o force_n that_o move_v and_o the_o disposition_n of_o the_o body_n move_v as_o it_o be_v compose_v of_o the_o three_o quality_n we_o late_o explicate_v in_o which_o be_v to_o be_v note_v that_o the_o agent_n do_v not_o move_v simple_o by_o its_o own_o virtue_n but_o apply_v also_o the_o virtue_n of_o the_o body_n move_v which_o it_o have_v to_o divide_v the_o medium_n when_o it_o be_v put_v on_o as_o when_o we_o cut_v with_o a_o knife_n the_o effect_n proceed_v from_o the_o knife_n press_v on_o by_o the_o hand_n or_o from_o the_o hand_n as_o apply_v and_o put_v in_o action_n the_o edge_n and_o cut_a power_n of_o the_o knife_n now_o this_o in_o physics_n and_o nature_n be_v clear_o parallel_v to_o what_o in_o geometry_n
and_o arithmetic_n the_o mathematician_n call_v draw_v one_o number_n or_o one_o side_n into_o another_o for_o as_o in_o mathematics_n to_o draw_v one_o number_n into_o another_o be_v to_o apply_v the_o number_n draw_v to_o every_o part_n of_o the_o number_n into_o which_o it_o be_v draw_v as_o if_o we_o draw_v three_o into_o seven_o we_o make_v twenty_o one_o by_o make_v every_o unity_n or_o part_n of_o the_o number_n seven_o to_o be_v three_o and_o the_o like_a be_v of_o line_n in_o geometry_n so_o in_o the_o present_a case_n to_o every_o part_n of_o the_o hand_n motion_n we_o add_v the_o whole_a virtue_n of_o the_o cut_a faculty_n which_o be_v in_o the_o knife_n and_o to_o every_o part_n of_o the_o motion_n of_o the_o knife_n we_o add_v the_o whole_a press_a virtue_n of_o the_o hand_n therefore_o the_o increase_n of_o the_o effect_n proceed_v from_o two_o cause_n so_o work_v must_v also_o be_v parallel_n to_o the_o increase_n of_o the_o quantity_n arise_v out_o of_o the_o like_o draw_v in_o mathematics_n but_o in_o those_o it_o be_v evident_a that_o the_o increase_n be_v according_a to_o the_o order_n of_o the_o odd_a number_n and_o therefore_o it_o must_v in_o our_o case_n be_v the_o like_a that_o be_v the_o increase_n must_v be_v in_o the_o say_a proportion_n of_o odd_a number_n now_o that_o in_o those_o the_o increase_n proceed_v so_o will_v be_v evident_a if_o you_o consider_v the_o increase_n of_o a_o equicrure_a triangle_n which_o because_o it_o go_v upon_o a_o certain_a proportion_n of_o length_n and_o breadth_n if_o you_o compare_v the_o increase_v of_o the_o whole_a triangle_n that_o gain_v on_o each_o side_n with_o the_o increase_v of_o the_o perpendicular_a which_o gain_v only_o in_o length_n you_o will_v see_v that_o they_o will_v proceed_v in_o the_o foresay_a proportion_n of_o odd_a number_n but_o we_o must_v not_o imagine_v that_o the_o velocity_n of_o motion_n will_v always_o increase_v thus_o for_o as_o long_o as_o we_o can_v fancy_v any_o motion_n but_o when_o it_o be_v arrive_v to_o the_o utmost_a period_n that_o such_o a_o movable_a with_o such_o cause_n be_v capable_a of_o than_o it_o keep_v constant_o the_o same_o pace_n and_o go_v equal_o and_o uniform_o at_o the_o same_o rate_n for_o since_o the_o density_n of_o the_o movable_a &_o the_o force_n of_o the_o agent_n move_v it_o which_o two_o cause_n the_o motion_n have_v a_o limit_a proportion_n to_o the_o resistance_n of_o the_o medium_n how_o yield_v soever_o it_o be_v it_o must_v needs_o follow_v that_o when_o the_o motion_n be_v arrive_v to_o that_o height_n which_o arise_v out_o of_o this_o proportion_n it_o can_v exceed_v it_o but_o must_v continue_v at_o that_o rate_n unless_o some_o other_o cause_n give_v yet_o a_o great_a impulse_n to_o the_o movable_a for_o velocity_n consist_v in_o this_o that_o the_o movable_a cut_n through_o more_o of_o the_o medium_n in_o a_o equal_a time_n it_o be_v evident_a that_o in_o the_o increase_n of_o velocity_n the_o resistance_n of_o the_o medium_n which_o be_v overcome_v by_o it_o grow_v great_a and_o great_a and_o by_o little_a and_o little_a gain_n upon_o the_o force_n of_o the_o agent_n so_o that_o the_o superproportion_n of_o the_o agent_n grow_v still_o lesser_a and_o lesser_a as_o the_o velocity_n increase_v and_o therefore_o at_o the_o length_n they_o must_v come_v to_o be_v balance_v and_o then_o the_o velocity_n can_v increase_v no_o more_o and_o the_o reason_n of_o the_o increase_n of_o it_o for_o a_o while_n at_o the_o beginning_n be_v because_o come_v from_o rest_n it_o must_v pass_v through_o all_o the_o intermediate_v degree_n of_o velocity_n before_o it_o can_v attain_v to_o the_o height_n of_o it_o which_o require_v time_n to_o perform_v and_o therefore_o fall_v under_o the_o power_n of_o our_o sense_n to_o observe_v but_o because_o we_o see_v it_o do_v so_o for_o some_o time_n we_o must_v not_o therefore_o conclude_v the_o nature_n of_o such_o motion_n be_v still_o to_o increase_v without_o any_o period_n or_o limit_n like_o those_o line_n that_o perpetual_o grow_v near_o and_o yet_o can_v never_o meet_v for_o we_o see_v our_o reason_n examine_v the_o cause_n of_o this_o velocity_n assure_v we_o that_o in_o continuance_n of_o time_n and_o space_n it_o may_v come_v to_o its_o height_n which_o it_o can_v exceed_v and_o there_o will_v be_v the_o pitch_n at_o which_o distance_n weight_v be_v let_v fall_v will_v give_v the_o great_a stroke_n and_o make_v great_a impression_n it_o be_v true_a that_o galileus_n and_o mersenius_n two_o exact_a experimenter_n do_v think_v they_o find_v this_o verity_n by_o their_o experience_n but_o sure_o that_o be_v impossible_a to_o be_v do_v for_o the_o increase_n of_o velocity_n be_v in_o a_o proportion_n ever_o diminish_v must_v of_o necessity_n come_v to_o a_o insensible_a increase_n in_o proportion_n before_o it_o end_v for_o the_o space_n which_o the_o movable_a go_v through_o be_v still_o increase_v and_o the_o time_n wherein_o it_o pass_v through_o that_o space_n remain_v still_o the_o same_o little_a one_o as_o be_v take_v up_o in_o pass_v a_o less_o space_n immediate_o before_o &_o such_o little_a difference_n of_o great_a space_n pass_v over_o in_o a_o little_a time_n come_v soon_o to_o be_v undiscernible_a by_o sense_n but_o reason_n which_o show_v we_o that_o if_o velocity_n never_o cease_v from_o increase_a it_o will_v in_o time_n arrive_v to_o exceed_v any_o particular_a velocity_n and_o by_o consequence_n the_o proportion_n which_o the_o mover_n have_v to_o the_o medium_n because_o of_o the_o add_v still_o a_o determinate_a part_n to_o its_o velocity_n conclude_v plain_o that_o it_o be_v impossible_a motion_n shall_v increase_v for_o ever_o without_o come_v to_o a_o period_n now_o the_o impression_n which_o fall_v weight_n make_v be_v of_o two_o kind_n for_o the_o body_n into_o which_o impression_n be_v make_v either_o can_v effect_n yield_v backward_o or_o it_o can_v if_o it_o can_v yield_v backward_o than_o the_o impression_n make_v be_v a_o motion_n as_o we_o see_v a_o stroke_n with_o a_o racket_n upon_o a_o ball_n or_o with_o a_o pail-mail_n beetle_n upon_o a_o bowl_n make_v it_o fly_v from_o it_o but_o if_o the_o strike_a body_n can_v yield_v backward_o than_o it_o make_v it_o yield_v on_o the_o side_n and_o this_o in_o divers_a matter_n for_o if_o the_o smite_a body_n be_v dry_a and_o brittle_a it_o be_v subject_a to_o break_v it_o and_o make_v the_o piece_n fly_v round_o about_o but_o if_o it_o be_v a_o tough_a body_n it_o squeese_v it_o into_o a_o large_a form_n but_o because_o the_o effect_n in_o any_o of_o these_o way_n be_v eminent_o great_a than_o the_o force_n of_o the_o agent_n seem_v to_o be_v it_o be_v worth_a our_o labour_n to_o look_v into_o the_o cause_n of_o it_o to_o which_o end_n we_o may_v remember_v how_o we_o have_v already_o declare_v that_o the_o force_n of_o the_o velocity_n be_v equal_a to_o a_o reciprocal_a force_n of_o weight_n in_o the_o virtue_n movent_fw-la wherefore_o the_o effect_n of_o a_o blow_n that_o a_o man_n give_v with_o a_o hammer_n depend_v on_o the_o weight_n of_o the_o hammer_n on_o the_o velocity_n of_o the_o motion_n and_o on_o the_o hand_n in_o case_n the_o hand_n accompany_v the_o blow_n but_o if_o the_o motion_n of_o the_o hand_n cease_v before_o as_o when_o we_o throw_v a_o thing_n then_o only_o the_o velocity_n and_o the_o weight_n of_o the_o hammer_n remain_v to_o be_v consider_v however_o let_v we_o put_v the_o hand_n and_o weight_n in_o one_o sum_n which_o we_o may_v equalise_v by_o some_o other_o virtue_n or_o weight_n then_o let_v we_o consider_v the_o way_n or_o space_n which_o a_o weight_n lie_v upon_o the_o thing_n be_v to_o go_v forward_o to_o do_v the_o same_o effect_n in_o the_o same_o time_n as_o the_o percussion_n do_v and_o what_o excess_n the_o line_n of_o the_o blow_n have_v over_o the_o line_n of_o that_o way_n or_o space_n such_o a_o excess_n we_o must_v add_v of_o equal_a weight_n or_o force_n to_o the_o weight_n we_o have_v already_o take_v and_o the_o weight_n compose_v of_o both_o will_v be_v a_o fit_a agent_n to_o make_v the_o like_a impression_n this_o problem_n be_v propose_v to_o i_o by_o that_o worthy_a religious_a man_n father_n mersenius_n who_o be_v not_o content_a with_o advance_v learning_n by_o his_o own_o industry_n and_o labour_n but_o beside_o be_v always_o out_o of_o his_o generous_a affection_n to_o verity_n incite_v other_o to_o contribute_v to_o the_o public_a stock_n of_o it_o he_o propose_v to_o i_o likewise_o this_o follow_a question_n to_o wit_n why_o there_o be_v require_v a_o weight_n of_o water_n in_o double_a geometrical_a proportion_n to_o make_v a_o pipe_n run_v twice_o as_o fast_o as_o it_o do_v or_o have_v twice_o as_o much_o
water_n run_v out_o in_o the_o same_o time_n to_o which_o i_o answer_v out_o of_o the_o same_o ground_n as_o before_z that_o because_o in_o run_v twice_o as_o fast_o there_o go_v out_o double_a the_o water_n in_o every_o part_n of_o time_n and_o again_o every_o part_n of_o water_n go_v a_o double_a space_n in_o the_o same_o part_n of_o time_n that_o be_v to_o say_v because_o double_v the_o celerity_n be_v draw_v into_o double_a the_o water_n and_o double_a the_o water_n into_o doule_n the_o celerity_n therefore_o the_o present_a effect_n be_v to_o the_o former_a effect_n as_o the_o effect_n or_o quadrate_n of_o a_o double_a line_n draw_v into_o into_o itself_o be_v to_o the_o effect_n or_o quadrate_n of_o half_a the_o say_a line_n draw_v into_o itself_o and_o consequent_o the_o cause_n of_o the_o latter_a effect_n which_o be_v the_o weight_n then_o must_v be_v to_o the_o cause_n of_o the_o former_a effect_n that_o be_v to_o the_o former_a weight_n in_o the_o same_o proportion_n namely_o as_o the_o quadrate_n of_o a_o double_a line_n be_v to_o the_o quadrate_n of_o half_a that_o line_n and_o so_o you_o see_v the_o reason_n of_o what_o he_o by_o experience_n find_v to_o be_v true_a though_o i_o doubt_v not_o but_o when_o he_o shall_v set_v out_o the_o treatise_n which_o he_o have_v make_v on_o this_o subject_n the_o reader_n will_v have_v better_a satisfaction_n in_o the_o mean_a while_n a_o experiment_n which_o galileo_n deliver_v will_v confirm_v this_o doctrine_n he_o say_v that_o to_o make_v the_o same_o pendant_fw-fr go_v twice_o as_o fast_o as_o it_o do_v or_o to_o make_v every_o undulation_n of_o it_o in_o half_a the_o time_n it_o do_v you_o must_v make_v the_o line_n at_o which_o it_o hang_v double_a in_o geometrical_a proportion_n to_o the_o line_n at_o which_o it_o hang_v before_o whence_o it_o follow_v that_o the_o circle_n by_o which_o it_o go_v be_v likewise_o in_o double_a geometrical_a proportion_n and_o this_o be_v certain_a that_o celerity_n to_o celerity_n have_v the_o proportion_n of_o force_n which_o weight_n have_v to_o weight_n it_o be_v evident_a that_o as_o in_o one_o case_n there_o must_v be_v weight_n in_o geometrical_a proportion_n so_o in_o theother_n case_n where_o only_a celerity_n make_v the_o variance_n the_o celerity_n must_v be_v in_o double_a geometrical_a proportion_n according_a as_o galileo_n find_v it_o by_o experience_n but_o to_o return_v to_o our_o main_a intent_n there_o be_v to_o be_v further_o note_v that_o if_o the_o subject_n strike_v be_v of_o a_o proportionate_a cessibility_n it_o seem_v to_o dull_a and_o deaden_a the_o stroke_n whereas_o if_o the_o thing_n strike_v be_v hard_o the_o stroke_n seem_v to_o lose_v no_o force_n but_o to_o work_v a_o great_a effect_n though_o indeed_o the_o truth_n be_v that_o in_o both_o case_n the_o effect_n be_v equal_a but_o diverse_a according_a to_o the_o nature_n of_o the_o thing_n that_o be_v strike_v for_o no_o force_n that_o once_o be_v in_o nature_n 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of_o that_o motion_n which_o so_o decline_v and_o that_o in_o the_o proportion_n of_o the_o odd_a number_n as_o we_o declare_v above_o it_o increase_v the_o reason_n be_v clear_a because_o that_o which_o make_v a_o motion_n cease_v be_v the_o resistance_n it_o find_v which_o resistance_n be_v a_o action_n of_o a_o mover_n that_o move_v something_o against_o the_o body_n move_v or_o something_o equivalent_a to_o such_o a_o action_n wherefore_o it_o must_v follow_v the_o law_n that_o be_v common_a to_o all_o motion_n of_o which_o kind_n those_o two_o be_v that_o we_o have_v express_v in_o this_o conclusion_n now_o that_o resistance_n be_v a_o countermotion_n or_o equivalent_a to_o one_o be_v plain_a by_o this_o that_o any_o body_n which_o be_v press_v must_v needs_o press_v again_o on_o the_o body_n that_o press_v it_o wherefore_o the_o cause_n that_o hinder_v such_o a_o body_n from_o yield_v be_v a_o force_n move_v that_o body_n against_o the_o body_n which_o press_v it_o the_o particular_n of_o all_o which_o we_o shall_v more_o at_o large_a declare_v where_o we_o speak_v of_o the_o action_n and_o reaction_n of_o particular_a body_n chap._n x._o of_o gravity_n and_o levity_n and_o of_o local_a motion_n common_o term_v natural_a it_o be_v now_o time_n to_o consider_v that_o distinction_n of_o motion_n which_o they_o be_v so_o famous_a in_o aristotle_n to_o wit_n that_o some_o motion_n be_v natural_a other_o violent_a and_o to_o determine_v what_o may_v be_v signify_v by_o these_o term_n for_o see_v we_o have_v say_v that_o no_o body_n have_v a_o natural_a intrinsical_a inclination_n to_o any_o place_n to_o which_o it_o be_v able_a to_o move_v itself_o we_o must_v needs_o conclude_v that_o the_o motion_n of_o every_o body_n follow_v the_o percussion_n of_o extrinsical_a agent_n it_o seem_v therefore_o impossible_a that_o any_o body_n shall_v have_v any_o motion_n natural_a to_o itself_o and_o if_o there_o be_v none_o natural_a there_o can_v be_v none_o violent_a and_o so_o this_o distinction_n will_v vanish_v to_o nothing_o but_o on_o the_o otherside_n live_v creature_n manifest_o show_v natural_a motion_n have_v natural_a instrument_n to_o perform_v certain_a motion_n wherefore_o such_o motion_n must_v of_o necessity_n be_v natural_a to_o they_o but_o these_o be_v not_o the_o motion_n we_o be_v to_o speak_v of_o for_o aristotle_n division_n be_v common_a to_o all_o body_n or_o at_o the_o least_o to_o all_o those_o we_o converse_v with_o and_o particular_o to_o those_o which_o be_v call_v heavy_a and_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 on_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 to_o body_n which_o have_v constant_a cause_n or_o percutient_n to_o make_v they_o always_o 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 much_o search_n 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 the_o middle_n of_o the_o earth_n &_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 let_v we_o then_o begin_v with_o consider_v what_o effect_n the_o sun_n atom_n which_o be_v a_o constant_a and_o perpetual_a cause_n work_v on_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 ascend_v and_o other_o to_o supply_v the_o room_n
as_o positive_a gravity_n or_o levity_n but_o that_o their_o course_n upward_o or_o downward_o happen_v to_o they_o by_o the_o order_n of_o nature_n which_o by_o outward_a cause_n give_v they_o a_o impulse_n one_o of_o these_o way_n without_o which_o they_o will_v rest_v quiet_o wherever_o they_o be_v as_o be_v of_o themselves_o indifferent_a to_o any_o motion_n but_o because_o our_o word_n express_v our_o notion_n and_o they_o be_v frame_v according_a to_o what_o appear_v to_o we_o when_o we_o observe_v any_o body_n to_o descend_v constant_o towards_o our_o earth_n we_o call_v it_o heavy_a and_o if_o it_o move_v contrariwise_o we_o call_v it_o light_n but_o we_o must_v take_v heed_n of_o consider_v such_o gravity_n and_o levity_n as_o if_o they_o be_v entity_n that_o work_v such_o effect_n since_o upon_o examination_n it_o appear_v that_o these_o word_n be_v but_o short_a expression_n of_o the_o effect_n themselves_o the_o cause_n whereof_o the_o vulgar_a of_o mankind_n who_o impose_v name_n to_o thing_n do_v not_o consider_v but_o leave_v that_o work_n to_o philosopher_n to_o examine_v while_o they_o only_o observe_v what_o they_o see_v do_v and_o agree_v upon_o word_n to_o express_v that_o which_o word_v neither_o will_n in_o all_o circumstance_n always_o agree_v to_o the_o same_o thing_n for_o as_o cork_n descend_v in_o air_n and_o ascend_v in_o water_n so_o also_o will_v any_o other_o body_n descend_v if_o it_o light_v among_o other_o more_o rare_a than_o itself_o and_o will_v ascend_v if_o it_o light_v among_o other_o that_o be_v more_o dense_a than_o it_o and_o we_o term_v body_n light_a and_o heavy_a only_o according_a to_o the_o course_n which_o we_o usual_o see_v they_o take_v now_o proceed_v further_o on_o and_o consider_v how_o there_o be_v descend_v various_a degree_n of_o density_n or_o gravity_n it_o be_v irrational_a to_o conceive_v that_o all_o body_n shall_v descend_v at_o the_o same_o rate_n and_o keep_v equal_a pace_n with_o one_o another_o in_o their_o journey_n downward_o for_o as_o two_o knife_n whereof_o one_o have_v a_o keen_a edge_n than_o the_o other_o be_v press_v with_o equal_a strength_n into_o like_a yield_a matter_n the_o sharp_a will_v cut_v deep_a than_o the_o other_o so_o if_o of_o two_o body_n one_o be_v more_o dense_a than_o the_o other_o that_o which_o be_v so_o will_v cut_v the_o air_n more_o powerful_o and_o descend_v fast_o than_o the_o other_o for_o in_o this_o case_n density_n may_v be_v compare_v to_o the_o knief_n edge_n since_o in_o it_o consist_v the_o power_n of_o divide_v as_o we_o have_v heretofore_o determine_v and_o therefore_o the_o press_v they_o downward_o by_o the_o descend_a atom_n be_v equal_a in_o both_o or_o peradventure_o great_a in_o the_o more_o dense_a body_n as_o anon_o we_o shall_v have_v occasion_n to_o touch_v and_o there_o be_v no_o other_o cause_n to_o determine_v they_o that_o way_n the_o effect_n of_o division_n must_v be_v the_o great_a where_o the_o divider_n be_v the_o more_o powerful_a which_o the_o more_o dense_a body_n be_v and_o density_n therefore_o cut_v more_o strong_o through_o the_o resistance_n of_o the_o air_n and_o consequent_o pass_v more_o swift_o that_o way_n it_o be_v determine_v to_o move_v i_o do_v not_o mean_v that_o the_o velocity_n of_o their_o descent_n shall_v be_v in_o the_o same_o proportion_n to_o one_o another_o as_o their_o density_n be_v for_o beside_o their_o density_n those_o other_o consideration_n which_o we_o have_v discourse_v of_o above_o when_o we_o examine_v the_o cause_n of_o velocity_n in_o motion_n must_v likewise_o be_v balance_v and_o out_o of_o the_o comparison_n of_o all_o they_o not_o out_o of_o the_o consideration_n of_o any_o one_o alone_a result_v the_o difference_n of_o their_o velocity_n nor_o that_o neither_o but_o in_o as_o much_o as_o concern_v the_o consideration_n of_o the_o moveable_n for_o to_o make_v the_o calculation_n exact_a the_o medium_fw-la must_v likewise_o be_v consider_v as_o by_o and_o by_o we_o shall_v declare_v for_o since_o the_o motion_n depend_v of_o all_o they_o together_o though_o there_o shall_v be_v difference_n between_o the_o moveable_n in_o regard_n of_o one_o only_a and_o that_o the_o rest_n be_v equal_a yet_o the_o proportion_n of_o the_o difference_n of_o their_o motion_n must_v not_o follow_v the_o proportion_n of_o their_o difference_n in_o that_o one_o regard_n because_o their_o difference_n consider_v single_a in_o that_o regard_n will_v have_v one_o proportion_n and_o with_o the_o addition_n of_o the_o other_o consideration_n though_o alike_o in_o both_o to_o their_o difference_n in_o this_o they_o will_v have_v another_o as_o for_o example_n reckon_v the_o density_n of_o one_o movable_a to_o be_v double_a the_o density_n of_o another_o movable_n so_o that_o in_o that_o regard_n it_o have_v two_o degree_n of_o power_n to_o descend_v whereas_o the_o other_o have_v but_o one_o suppose_v then_o the_o other_o cause_n of_o their_o descent_n to_o be_v alike_o in_o both_o and_o reckon_v they_o all_o three_o and_o then_o join_v these_o three_o to_o the_o one_o which_o be_v cause_v by_o the_o density_n in_o one_o of_o the_o moveable_n as_o likewise_o to_o the_o two_o which_o be_v cause_v by_o the_o density_n in_o the_o other_o movable_a and_o you_o will_v find_v that_o thus_o altogether_o their_o difference_n of_o power_n to_o descend_v be_v no_o long_o in_o a_o double_a proportion_n as_o it_o will_v be_v if_o nothing_o but_o their_o density_n be_v consider_v but_o be_v in_o the_o proportion_n of_o five_o to_o four_o but_o after_o we_o have_v consider_v all_o that_o concern_v the_o moveable_n we_o be_v then_o to_o cast_v a_o eye_n upon_o the_o medium_fw-la they_o be_v to_o move_v in_o and_o we_o shall_v find_v the_o addition_n of_o that_o decrease_v the_o proportion_n of_o their_o difference_n exceed_o more_a according_a to_o the_o cessibility_n of_o the_o medium_fw-la which_o if_o it_o be_v air_n the_o great_a disproportion_n of_o its_o weight_n to_o the_o weight_n of_o those_o body_n which_o man_n use_v to_o take_v in_o make_v experience_n of_o their_o descent_n in_o that_o yield_a medium_fw-la will_v cause_v their_o difference_n of_o velocity_n in_o descend_v to_o be_v hardly_o perceptible_a even_o as_o the_o difference_n of_o a_o sharp_a or_o dull_a knife_n which_o be_v easy_o perceive_v in_o cut_v of_o flesh_n or_o bread_n be_v not_o to_o be_v distinguish_v in_o divide_v of_o water_n or_o oil_n and_o likewise_o in_o weight_n a_o pound_n and_o a_o scruple_n will_v bear_v down_o a_o dram_n in_o no_o sensible_a proportion_n of_o velocity_n more_o than_o a_o pound_n alone_o will_v do_v and_o yet_o put_v a_o pound_n in_o that_o scale_n in_o stead_n of_o the_o dram_n and_o then_o the_o difference_n of_o the_o scruple_n will_v be_v very_o notable_a so_o then_o those_o body_n who_o difference_n of_o descend_v in_o water_n be_v very_o sensible_a because_o of_o the_o great_a proportion_n of_o weight_n in_o water_n to_o the_o body_n that_o descend_v in_o it_o will_v yield_v no_o sensible_a difference_n of_o velocity_n when_o they_o descend_v in_o air_n by_o reason_n of_o the_o great_a disproportion_n of_o weight_n between_o air_n and_o the_o body_n that_o descend_v in_o it_o the_o reason_n of_o this_o will_v clear_o show_v itself_o in_o abstract_a proportion_n thus_o suppose_v air_n to_o have_v one_o degree_n of_o density_n and_o water_n to_o have_v 400_o then_o let_v the_o movable_a a._n have_v 410_o degree_n of_o density_n and_o the_o movable_a b._n have_v 500_o now_o compare_v their_o motion_n to_o one_o another_o in_o the_o several_a medium_n of_o air_n and_o water_n the_o exuperance_n of_o the_o density_n of_o a._n to_o water_n be_v 10_o degree_n but_o the_o exuperance_n of_o b._n to_o the_o same_o water_n be_v 100_o degree_n so_o that_o b._n must_v have_v in_o water_n swift_a than_o a_o in_o the_o proportion_n of_o 103_o to_o ten_o that_o be_v of_o 10_o to_o one_o then_o let_v we_o 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galileus_n as_o it_o seem_v aim_v at_o but_o in_o divers_a part_n in_o which_o the_o movable_a successive_o be_v which_o be_v conclude_v let_v we_o see_v how_o the_o force_a motion_n come_v to_o decrease_v and_o be_v end_v to_o which_o purpose_n we_o may_v observe_v that_o the_o impression_n which_o the_o arrow_n receive_v from_o the_o air_n that_o drive_v it_o forward_o be_v weak_a than_o that_o which_o it_o receive_v at_o first_o from_o the_o string_n by_o reason_n that_o the_o air_n be_v not_o so_o dense_a and_o therefore_o can_v strike_v so_o great_a a_o blow_n the_o arrow_n do_v not_o in_o this_o second_o measure_n of_o time_n wherein_o we_o consider_v the_o impulse_n give_v by_o the_o air_n only_o cut_v so_o strong_o the_o air_n before_o it_o nor_o press_v so_o
violent_o upon_o it_o as_o in_o the_o first_o measure_n when_o the_o string_n part_v from_o it_o do_v beat_v it_o forward_o for_o till_o then_o the_o velocity_n increase_v in_o the_o arrow_n as_o it_o do_v in_o the_o string_n that_o carry_v it_o along_o which_o proceed_v from_o rest_n at_o the_o finger_n lose_v from_o it_o to_o its_o high_a degree_n of_o velocity_n which_o be_v when_o it_o arrive_v to_o the_o utmost_a extent_n of_o its_o jerk_n where_o it_o quit_v the_o arrow_n and_o therefore_o the_o air_n now_o do_v not_o so_o swift_o nor_o so_o much_o of_o it_o rebound_v back_o from_o before_o and_o clap_v itself_o behind_o the_o arrow_n to_o fill_v the_o space_n that_o else_o will_v be_v leave_v void_a by_o the_o arrow_n move_v forward_o and_o consequent_o the_o blow_n it_o give_v in_o the_o three_o measure_n to_o drive_v the_o arrow_n on_o can_v be_v so_o great_a as_o the_o blow_n be_v immediate_o after_o the_o string_n part_v from_o it_o which_o be_v in_o the_o second_o measure_n of_o time_n and_o therefore_o the_o arrow_n must_v needs_o move_v slow_a in_o the_o three_o measure_n than_o it_o do_v in_o the_o second_o as_o former_o it_o move_v slow_a in_o the_o second_o which_o be_v the_o air_n first_o stroke_n than_o it_o do_v in_o the_o first_o when_o the_o string_n drive_v it_o forward_o and_o thus_o successive_o in_o every_o moment_n of_o time_n as_o the_o cause_n grow_v weak_a &_o weak_a by_o the_o increase_n of_o resistance_n in_o the_o air_n before_o and_o by_o the_o decrease_n of_o force_n in_o the_o subsequent_a air_n so_o the_o motion_n must_v be_v slow_a and_o slow_a till_o it_o come_v to_o pure_a cessation_n body_n as_o for_o galileu_n second_o argument_n that_o the_o air_n have_v little_a power_n over_o heavy_a thing_n and_o therefore_o he_o will_v not_o allow_v it_o to_o be_v the_o cause_n of_o continue_v force_v motion_n in_o dense_a body_n i_o wish_v he_o can_v as_o well_o have_v make_v experience_n what_o velocity_n of_o motion_n a_o man_n breath_n may_v produce_v in_o a_o heavy_a bullet_n lie_v upon_o a_o even_o hard_a and_o slippery_a plain_n for_o a_o table_n will_v be_v too_o short_a as_o he_o do_v how_o admirable_a great_a a_o one_o it_o produce_v in_o pendant_n hang_v in_o the_o air_n and_o i_o doubt_v not_o but_o he_o will_v have_v grant_v it_o as_o powerful_a in_o cause_v horizontal_a motion_n as_o he_o find_v it_o in_o the_o undulation_n of_o his_o pendant_n which_o nevertheless_o sufficient_o convince_v how_o great_a a_o power_n air_n have_v over_o heay_n body_n as_o likewise_o the_o experience_n of_o wind-gun_n assure_v we_o that_o air_n due_o apply_v be_v able_a to_o give_v great_a motion_n to_o heavy_a body_n than_o to_o light_a one_o for_o how_o can_v a_o straw_n or_o feather_n be_v imagine_v possible_o to_o fly_v with_o half_a the_o violence_n as_o a_o bullet_n of_o lead_n do_v out_o of_o one_o of_o those_o engine_n and_o when_o a_o man_n suck_v a_o bullet_n upward_o in_o a_o perfect_o bore_v barrel_n of_o a_o gun_n which_o the_o bullet_n fit_v exact_o as_o we_o have_v mention_v before_o with_o what_o a_o violence_n do_v it_o follow_v the_o breath_n and_o ascend_v to_o the_o mouth_n of_o the_o barrel_n i_o remember_v to_o have_v see_v a_o man_n that_o be_v uncautious_a and_o suck_v strong_o that_o have_v his_o foretooth_n beat_v out_o by_o the_o blow_n of_o the_o bullet_n ascend_v this_o experiment_n if_o well_o look_v into_o may_v peradventure_o make_v good_a a_o great_a part_n of_o this_o doctrine_n we_o now_o deliver_v for_o the_o air_n press_v in_o behind_o the_o bullet_n at_o the_o touchhole_n give_v it_o its_o impulse_n upward_o to_o which_o the_o density_n of_o the_o bullet_n be_v add_v you_o have_v the_o cause_n of_o its_o swiftness_n and_o violence_n for_o a_o bullet_n of_o wood_n or_o cork_n will_v not_o ascend_v so_o fast_o and_o so_o strong_o and_o the_o suck_a away_o of_o the_o air_n before_o it_o take_v away_o that_o resistance_n which_o otherwise_o it_o will_v encounter_v with_o by_o the_o air_n lie_v in_o its_o way_n and_o its_o follow_v the_o breath_n with_o so_o great_a ease_n show_v as_o we_o touch_v before_o that_o of_o itself_o it_o be_v indifferent_a to_o any_o motion_n when_o nothing_o press_v upon_o it_o to_o determine_v it_o a_o certain_a way_n now_o to_o galileo_n last_o argument_n that_o a_o arrow_n shall_v fly_v fast_a way_n broad-way_n than_o long-way_n if_o the_o air_n be_v cause_n of_o its_o motion_n there_o need_v no_o more_o to_o be_v say_v but_o that_o the_o resistance_n of_o the_o air_n before_o hinder_v it_o as_o much_o as_o the_o impulse_n of_o the_o air_n behind_o help_v it_o on_o so_o that_o nothing_o be_v gain_v in_o that_o regard_n but_o much_o be_v lose_v in_o respect_n of_o the_o figure_n which_o make_v the_o arrow_n unapt_a to_o cut_v the_o air_n so_o well_o when_o it_o fly_v broad-way_n as_o when_o it_o be_v shoot_v long-way_n and_o therefore_o the_o air_n be_v weak_o cut_v so_o much_o of_o it_o can_v clap_v in_o behind_o the_o arrow_n and_o drive_v it_o on_o against_o the_o resistance_n before_o which_o be_v much_o great_a thus_o far_o with_o due_a respect_n and_o with_o acknowledge_v remembrance_n of_o the_o many_o admirable_a mystery_n of_o nature_n which_o that_o great_a man_n have_v teach_v the_o world_n we_o have_v take_v liberty_n to_o dipute_v against_o he_o because_o this_o difficulty_n seem_v to_o have_v drive_v he_o against_o his_o genius_n to_o believe_v that_o in_o such_o motion_n there_o must_v be_v allow_v a_o quality_n imprint_v into_o the_o move_a body_n to_o cause_v they_o which_o our_o whole_a scope_n both_o in_o this_o and_o all_o other_o occasion_n where_o like_a quality_n be_v urge_v be_v to_o prove_v superfluous_a and_o ill_o ground_v in_o nature_n and_o to_o be_v but_o mere_a term_n to_o confound_v and_o leave_v in_o the_o dark_a whoever_o be_v force_v to_o fly_v to_o they_o chap._n xiii_o of_o three_o sort_n of_o violent_a motion_n reflection_n undulation_n and_o refraction_n the_o motion_n we_o have_v last_o speak_v of_o because_o it_o be_v ordinary_o motion_n either_o in_o part_n or_o whole_o contrary_a to_o gravity_n which_o be_v account_v the_o natural_a motion_n of_o most_o body_n use_v to_o be_v call_v violent_a or_o force_v and_o thus_o you_o have_v deliver_v you_o the_o nature_n and_o cause_n both_o of_o natural_a and_o of_o force_a motion_n yet_o it_o remain_v that_o we_o advertise_v you_o of_o some_o particular_a kind_n of_o this_o force_a motion_n which_o seem_v to_o be_v different_a from_o it_o but_o indeed_o be_v not_o as_o first_o the_o motion_n of_o reflection_n which_o if_o we_o but_o consider_v how_o force_a motion_n be_v make_v we_o shall_v find_v it_o be_v nothing_o else_o but_o a_o force_a motion_n who_o line_n whereon_o it_o be_v make_v be_v as_o it_o be_v snap_v in_o two_o by_o the_o encounter_n of_o a_o hard_a body_n for_o even_o as_o we_o see_v in_o a_o spout_n of_o water_n strong_o shoot_v against_o a_o wall_n the_o water_n follow_v drive_v the_o precedent_a part_n first_o to_o the_o wall_n and_o afterward_o come_v themselves_o to_o the_o wall_n force_v they_o again_o another_o way_n from_o the_o wall_n so_o the_o latter_a part_n of_o the_o torrent_n of_o air_n which_o be_v cause_v by_o the_o force_n that_o occasion_v the_o force_a motion_n drive_v the_o former_a part_n first_o upon_o the_o resistant_n body_n and_o afterward_o again_o from_o it_o but_o this_o be_v more_o eminent_a in_o light_n than_o in_o any_o other_o body_n because_o light_n do_v less_o rissent_fw-la gravity_n and_o so_o observe_v the_o pure_a course_n of_o the_o stroke_n better_o than_o any_o other_o body_n from_o which_o other_o for_o the_o most_o part_n decline_v some_o way_n by_o reason_n of_o their_o weight_n now_o the_o particular_a law_n of_o reflection_n be_v that_o the_o line_n incident_a &_o the_o line_n of_o reflection_n must_v make_v equal_a angle_n with_o that_o line_n of_o angle_n the_o resistent_fw-la superficies_n which_o be_v in_o the_o same_o superficies_n with_o themselves_o the_o demonstration_n whereof_o that_o great_a wit_n renatus_n des_fw-fr cartes_n have_v excellent_o set_v down_o in_o his_o book_n of_o dioptric_n by_o the_o example_n of_o a_o ball_n strike_v by_o a_o racket_n against_o the_o earth_n or_o any_o resist_a body_n the_o substance_n whereof_o be_v as_o follows_z the_o motion_n which_o we_o call_v undulation_n need_v no_o further_a explication_n undulation_n for_o it_o be_v manifest_a that_o since_o a_o pendent_a when_o it_o be_v remove_v from_o its_o perpendicular_a will_v restore_v itself_o thereto_o by_o the_o natural_a force_n of_o gravity_n and_o that_o in_o so_o do_v it_o gain_v a_o velocity_n and_o therefore_o can_v cease_v on_o a_o sudden_a it_o must_v needs_o be_v
same_o point_n of_o incidence_n in_o a_o short_a line_n and_o a_o great_a angle_n than_o another_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 wake_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_o have_v more_o of_o a_o plain_a and_o straight_o superficies_n and_o consequent_o reflect_v at_o a_o great_a angle_n than_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 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 light_a make_v for_o if_o they_o as_o well_o as_o the_o immediate_a cause_n of_o refraction_n 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 mist_n and_o glass_n and_o thick-bodied_n water_n and_o monsir_fw-fr des_fw-fr 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 another_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 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 leau_n &_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_n 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 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 another_o as_o if_o they_o have_v be_v former_o stack_n 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 another_o the_o chemical_a oil_n and_o spirit_n which_o monsir_fw-fr des_fw-fr cartes_n speak_v of_o be_v likely_a to_o be_v of_o the_o same_o composition_n since_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 on_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 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 such_o a_o body_n as_o we_o have_v describe_v it_o where_o we_o treat_v of_o its_o nature_n it_o be_v evident_a the_o effect_n we_o have_v express_v must_v necessary_o follow_v by_o way_n of_o reflection_n and_o refraction_n be_v nothing_o else_o but_o a_o certain_a kind_n of_o reflection_n which_o last_o assertion_n be_v likewise_o convince_v out_o of_o this_o 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