our_o whole_a scope_n both_o in_o this_o and_o in_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 whosoever_o be_v force_v to_o fly_v unto_o they_o the_o therteenth_n chapter_n of_o three_o sort_n of_o violent_a motion_n reflection_n vndulation_n and_o refraction_n motion_n the_o motion_n we_o have_v last_o speak_v of_o because_o it_o be_v ordinary_o 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 unto_o 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 do_v but_o consider_v how_o force_a motion_n be_v make_v we_o shall_v find_v that_o it_o be_v nothing_o else_o but_o a_o force_a motion_n who_o line_n whereupon_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_v of_o water_n that_o be_v 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 afterwards_o come_v themselves_o to_o the_o wall_n force_v they_o again_o a_o other_o way_n from_o the_o wall_n right_o 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 resistent_fw-la body_n and_o afterwards_o again_o from_o it_o but_o this_o be_v more_o eminent_a in_o light_n then_o in_o any_o other_o body_n because_o 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manner_n also_o be_v perform_v that_o undulation_n which_o we_o see_v in_o water_n when_o it_o be_v stir_v from_o the_o natural_a situation_n of_o its_o spherical_a superficies_n galileo_n have_v note_v that_o the_o time_n in_o which_o the_o undulation_n be_v make_v which_o follow_v one_o a_o other_o of_o their_o own_o accord_n be_v the_o same_o in_o every_o one_o of_o they_o and_o that_o as_o much_o time_n precise_o be_v take_v up_o in_o a_o pendant_n go_v a_o very_a short_a arch_n towards_o the_o end_n of_o its_o vibration_n as_o be_v in_o its_o go_n of_o the_o great_a arch_n at_o the_o beginning_n of_o its_o motion_n the_o reason_n whereof_o seem_v strange_a to_o he_o and_o he_o think_v it_o to_o be_v a_o accident_n natural_a to_o the_o body_n out_o of_o its_o gravity_n and_o that_o this_o effect_n convince_v it_o be_v not_o the_o air_n which_o move_v such_o body_n whereas_o in_o truth_n it_o be_v clear_o the_o air_n which_o cause_v this_o effect_n because_o the_o air_n strive_v at_o each_o end_n where_o it_o be_v further_a from_o the_o force_n of_o the_o motion_n to_o quiett_v itself_o get_v at_o every_o bout_n somewhat_o upon_o the_o space_n and_o so_o contract_v that_o into_o a_o short_a arch_n that_o motion_n also_o which_o we_o call_v refraction_n and_o be_v manifest_a to_o sense_n only_o in_o light_n though_o peradventure_o hereafter_o more_o diligent_a searcher_n of_o nature_n may_v likewise_o find_v it_o in_o such_o other_o body_n as_o be_v call_v quality_n as_o in_o cold_a or_o heat_n etc._n etc._n be_v but_o a_o kind_n of_o reflection_n for_o there_o be_v certain_a body_n in_o which_o the_o passage_n be_v so_o well_o order_v with_o their_o resistance_n that_o all_o the_o part_n of_o they_o seem_v to_o permit_v light_a to_o pass_v through_o they_o and_o yet_o all_o part_n of_o they_o seem_v to_o reflect_v it_o when_o light_n pass_v through_o such_o body_n it_o find_v at_o the_o very_a entrance_n of_o they_o such_o resistance_n where_o it_o pass_v as_o 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refraction_n which_o monsieur_n des_n cartes_n use_v so_o witty_a a_o one_o as_o i_o be_o sorry_a it_o want_v success_n he_o therefore_o follow_v the_o demonstration_n above_o give_v of_o reflection_n suppose_v the_o superficies_n which_o a_o ball_n light_v upon_o to_o be_v a_o thin_a linen_n cloth_n or_o some_o other_o such_o matter_n as_o will_v break_v clean_o by_o the_o force_n of_o the_o ball_n strike_v smart_o upon_o it_o and_o because_o that_o superficies_n resist_v only_o one_o way_n therefore_o he_o infer_v that_o the_o velocity_n of_o the_o ball_n be_v lessen_v only_o one_o way_n and_o not_o the_o other_o so_o that_o the_o velocity_n of_o its_o motion_n that_o way_n in_o which_o it_o find_v no_o resistance_n must_v be_v after_o the_o ball_n passage_n through_o the_o linen_n in_o a_o great_a proportion_n to_o the_o velocity_n which_o it_o have_v the_o other_o way_n where_o it_o find_v resistance_n than_o it_o be_v before_o and_o therefore_o the_o ball_n will_v in_o less_o time_n arrive_v to_o its_o period_n on_o the_o one_o side_n then_o on_o the_o other_o and_o consequent_o it_o will_v lean_v towards_o that_o side_n unto_o which_o the_o course_n wherein_o it_o find_v no_o opposition_n do_v carry_v it_o which_o to_o shâ—w_v how_o it_o be_v contrary_a unto_o his_o own_o principle_n let_v we_o conceive_v the_o cloth_n ce_fw-fr to_o be_v of_o some_o thickness_n and_o so_o draw_v the_o line_n open_v to_o determine_v that_o thickness_n and_o let_v we_o make_v from_o b_o upon_o all_o a_o other_o parallelogramme_n like_o the_o parallelogramme_n all_o who_o diameter_n shall_v be_v bq_n and_o it_o must_v necessaril_o follow_v that_o the_o motion_n from_o b_o to_o q_o if_o there_o be_v no_o resistance_n be_v in_o the_o same_o proportion_n as_o from_o a_o to_o b._n but_o the_o proportion_n of_o the_o motion_n from_o
a_o other_o forwards_o as_o you_o may_v do_v a_o fine_a towel_n through_o a_o muskett_n barrel_n which_o though_o it_o be_v too_o limber_a to_o be_v thrust_v straight_o through_o yet_o cram_v still_o new_a part_n into_o it_o at_o the_o length_n you_o will_v drive_v the_o first_o quite_o through_o and_o thus_o when_o these_o part_n of_o water_n be_v get_v up_o to_o the_o top_n of_o the_o vessel_n on_o which_o the_o filter_n hang_v and_o over_o it_o on_o the_o other_o side_n by_o stick_v still_o to_o the_o tow_n and_o by_o their_o natural_a gravity_n against_o which_o nothing_o press_v on_o this_o side_n the_o label_n they_o fall_v down_o again_o by_o little_a and_o little_a and_o by_o drop_n break_v again_o into_o water_n in_o the_o vessel_n set_v to_o receive_v they_o but_o now_o if_o you_o ask_v why_o it_o will_v not_o drop_n unless_o the_o end_n of_o the_o label_n that_o hang_v water_n be_v low_a than_o the_o water_n i_o conceive_v it_o be_v because_o the_o water_n which_o be_v all_o 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into_o drop_n so_o that_o the_o water_n in_o the_o cistern_n serve_v like_o the_o flax_n upon_o a_o distaff_n and_o be_v spin_a into_o a_o thridde_v of_o water_n still_o as_o it_o come_v to_o the_o flannen_n by_o the_o draw_v it_o up_o occasion_v by_o the_o overweight_n of_o the_o thridde_v on_o the_o other_o side_n of_o the_o centre_n which_o to_o express_v better_o by_o a_o similitude_n in_o a_o solid_a body_n i_o remember_v i_o have_v oftentimes_o see_v in_o a_o mercer_n shop_n a_o great_a heap_n of_o massy_a goldlace_n lie_v upon_o their_o stall_n and_o a_o little_a way_n above_o it_o a_o round_a smooth_a pin_n of_o wood_n over_o which_o they_o use_v to_o hale_v their_o lace_n when_o they_o wind_v it_o into_o bottom_n now_o over_o this_o pin_n i_o have_v put_v one_o end_n of_o the_o lace_n and_o as_o long_o as_o it_o hang_v no_o low_o they_o the_o board_n upon_o which_o the_o rest_n of_o the_o lace_n do_v lie_v it_o stir_v not_o for_o as_o the_o weight_n of_o the_o loose_a end_n carry_v it_o one_o way_n so_o the_o weight_n of_o the_o other_o side_n where_o the_o whole_a be_v draw_v it_o the_o other_o way_n and_o in_o this_o manner_n keep_v it_o in_o equilibrity_n but_o as_o soon_o as_o i_o draw_v on_o the_o hang_a end_n to_o be_v heavy_a they_o the_o climb_v side_n for_o no_o more_o weigh_v they_o be_v in_o the_o air_n that_o which_o lie_v upon_o the_o board_n have_v a_o other_o centre_n than_o it_o begin_v to_o roll_n to_o the_o ground_n and_o still_o draw_v up_o new_a part_n of_o that_o which_o lie_v upon_o the_o board_n until_o all_o be_v tumble_v down_o upon_o the_o floor_n in_o the_o same_o manner_n it_o happen_v to_o the_o water_n in_o which_o the_o thridde_v of_o it_o upon_o the_o filter_n be_v to_o be_v compare_v fit_o unto_o that_o part_n of_o the_o lace_n which_o hang_v upon_o the_o pin_n and_o the_o whole_a quantity_n in_o the_o cistern_n be_v like_o the_o bulk_n of_o lace_n upon_o the_o shoppeboard_n for_o as_o fast_o as_o the_o filter_n draw_v it_o up_o it_o be_v convert_v into_o a_o thridde_v like_o that_o which_o be_v already_o upon_o the_o filter_n in_o like_a manner_n as_o the_o wheel_n convert_v the_o flax_n into_o yarn_n as_o fast_o as_o it_o draw_v it_o out_o from_o the_o distaff_n not_o our_o next_o consideration_n will_v very_o apt_o fall_v upon_o the_o motion_n of_o those_o thing_n which_o be_v bend_v do_v leap_v with_o violence_n to_o their_o former_a figure_n whereas_o other_o return_v but_o a_o little_a and_o other_o do_v stand_v in_o that_o ply_v wherein_o the_o bend_n of_o they_o have_v set_v they_o for_o find_v the_o reason_n of_o which_o effect_n our_o first_o reflection_n may_v be_v to_o note_n that_o a_o superficies_n which_o be_v more_o long_o then_o broad_a contain_v a_o less_o floor_n then_o that_o who_o side_n be_v equal_a or_o near_a being_n equal_a and_o that_o of_o those_o surface_n who_o line_n and_o angle_n be_v all_o equal_a that_o which_o have_v most_o side_n and_o angle_n contain_v still_o the_o great_a floor_n whence_o it_o be_v that_o mathematician_n conclude_v a_o circle_n to_o be_v the_o most_o capacious_a of_o all_o figure_n and_o what_o they_o say_v of_o line_n in_o respect_n of_o a_o superficies_n the_o same_o with_o proportion_n they_o say_v of_o surface_n in_o respect_n of_o the_o body_n contain_v and_o according_o we_o see_v by_o consequence_n that_o in_o the_o make_v a_o bag_n of_o a_o long_a napkin_n if_o the_o napkin_n be_v sow_v together_o longwise_o it_o hold_v a_o great_a deal_n less_o than_o if_o it_o be_v sow_v together_o broadwise_o by_o this_o we_o see_v plain_o that_o if_o any_o body_n which_o be_v in_o a_o thick_a and_o short_a figure_n be_v force_v into_o a_o thin_a which_o by_o become_v thin_a must_v likewise_o become_v either_o long_a or_o broad_a for_o what_o it_o lose_v one_o way_n it_o must_v get_v a_o other_o than_o that_o superfiey_n must_v needs_o be_v stretch_v which_o in_o our_o case_n be_v a_o physical_a outside_n or_o material_a part_n of_o a_o solid_a body_n not_o a_o mathematical_a consideration_n of_o a_o indivisible_a entity_n we_o see_v also_o that_o this_o change_n of_o figure_n happen_v in_o the_o bend_n of_o all_o those_o body_n whereof_o we_o be_v now_o inquire_v the_o reason_n why_o some_o of_o they_o restore_v themselves_o to_o their_o original_a figure_n and_o other_o stand_v as_o they_o be_v bend_v then_o to_o begin_v with_o the_o latter_a sort_n we_o find_v that_o they_o be_v of_o a_o moist_a nature_n as_o among_o metal_n lead_v and_o tin_n and_o among_o other_o body_n those_o which_o we_o account_v soft_a and_o we_o may_v determine_v that_o this_o effect_n proceed_v partly_o from_o the_o humidity_n of_o the_o body_n that_o stand_v bend_v and_o partly_o from_o a_o dryness_n peculiar_a to_o it_o that_o comprehend_v and_o fix_v the_o humidity_n of_o it_o for_o by_o the_o first_o they_o be_v render_v capable_a of_o be_v drive_v into_o any_o figure_n which_o nature_n or_o art_n desire_v and_o by_o the_o second_o they_o be_v preserve_v from_o have_v their_o gravity_n put_v they_o out_o of_o what_o figure_n they_o have_v once_o receive_v but_o because_o these_o two_o condition_n be_v common_a to_o all_o solid_a body_n we_o may_v conclude_v that_o if_o no_o other_o circumstance_n concur_v the_o effect_n arise_v out_o of_o they_o will_v likewise_o be_v common_a to_o all_o such_o and_o therefore_o where_o we_o find_v it_o otherwise_o we_o must_v seek_v further_o for_o a_o cause_n of_o that_o transgression_n as_o for_o example_n if_o you_o bend_v the_o body_n of_o young_a tree_n or_o the_o branch_n of_o other_o they_o will_v return_v to_o their_o due_a figure_n it_o be_v true_a they_o will_v sometime_o lean_v towards_o that_o way_n they_o have_v be_v bend_v as_o may_v be_v see_v even_o in_o great_a tree_n after_o violent_a tempest_n and_o general_o the_o head_n of_o tree_n and_o the_o ear_n of_o corn_n and_o the_o grow_v hedgerowe_n will_v all_o bend_v one_o way_n in_o some_o country_n where_o some_o one_o wind_n have_v a_o main_a predominance_n and_o reign_v most_o continual_o as_o near_o the_o seashore_n upon_o the_o western_a coast_n of_o england_n where_o the_o south-west_n wind_n blow_v constant_o the_o great_a part_n of_o the_o year_n may_v be_v observe_v but_o this_o effect_n proceed_v from_o a_o particular_a and_o extraordinary_a cause_n concern_v not_o our_o matter_n in_o hand_n we_o be_v to_o examine_v the_o reason_n of_o the_o motion_n of_o restitution_n which_o we_o general_o see_v in_o young_a tree_n and_o branch_n of_o other_o as_o we_o say_v before_o in_o such_o we_o see_v that_o the_o earthy_a part_n which_o make_v they_o stiff_o or_o
to_o perform_v vital_a motion_n pag._n 203._o §_o 1._o the_o connexion_n of_o the_o follow_a chapter_n with_o the_o precedent_a one_o ibid._n §_o 2._o concern_v several_a composition_n of_o mix_a body_n pag._n 204._o §_o 3._o two_o sort_n of_o live_a creature_n pag._n 205._o §_o 4._o a_o engine_n to_o express_v the_o first_o sort_n of_o live_a creature_n ibid._n §_o 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 pag._n 207._o §_o 6._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 ibid._n §_o 7._o how_o plant_n be_v frame_v pag._n 209._o §_o 8._o how_o sensitive_a creature_n be_v form_v pag._n 210._o 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 pag._n 213_o §_o 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 ibid._n §_o 2._o the_o former_a opinion_n reject_v pag._n 214._o §_o 3._o the_o author_n opinion_n of_o this_o question_n pag._n 215._o §_o 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 pag._n 216._o §_o 5._o the_o author_n opinion_n concern_v the_o generation_n of_o animal_n declare_v and_o confirm_v pag._n 217._o §_o 6._o that_o one_o substance_n be_v change_v into_o a_o other_o pag._n 219._o §_o 7._o concern_v the_o hatch_n of_o chicken_n and_o the_o generation_n of_o other_o animal_n pag._n 220._o §_o 8._o from_o whence_o it_o happen_v that_o the_o deficience_n or_o excrescence_n of_o the_o parent_n body_n be_v often_o see_v in_o their_o child_n pag._n 221_o §_o 9_o the_o difference_n between_o the_o author_n opinion_n and_o the_o former_a one_o p._n 222_o §_o 10._o that_o the_o hart_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 paragraphe_n pag._n 223._o §_o 11._o that_o the_o hart_n be_v the_o first_o part_n generate_v in_o a_o live_a creature_n pag._n 225._o 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 pag._n 226._o §_o 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 pag._n 226._o §_o 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 â—he_n three_o dimension_n cause_v by_o the_o concurrence_n of_o accidental_a cause_n pag._n 227_o §_o 3._o the_o former_a doctrine_n be_v confirm_v by_o several_a instance_n pag_n 228_o §_o 4._o the_o same_o doctrine_n apply_v to_o plantes_n pag._n 229_o §_o 5._o the_o same_o doctrine_n declare_v in_o leaf_n of_o tree_n ibid._n §_o 6._o the_o same_o apply_v to_o the_o body_n of_o animal_n pag._n 230_o §_o 7._o in_o what_o sense_n the_o author_n do_v admit_v of_o vis_fw-fr formatrix_fw-la pag._n 231_o chap._n xxvi_o how_o motion_n begin_v in_o live_a creature_n and_o of_o the_o motion_n of_o the_o hart_n circulation_n of_o the_o blood_n nutrition_n augmentation_n and_o corruption_n or_o death_n pag._n 232_o §_o 1._o fromwhence_o do_v proceed_v the_o primary_n motion_n and_o growth_n in_o plantes_n ibid._n §_o 2._o mounseur_fw-fr des_fw-fr cartes_n his_o opinion_n touch_v the_o motion_n of_o the_o hart_n p._n 233_o §_o 3._o the_o former_a opinion_n reject_v ibid._n §_o 4._o the_o author_n opinion_n concern_v the_o motion_n of_o the_o hart_n pag._n 234_o §_o 5._o the_o motion_n of_o the_o hart_n depend_v original_o of_o its_o fiber_n irrigate_v by_o blood_n pag._n 236_o §_o 6._o a_o objection_n answer_v against_o the_o former_a doctrine_n pag._n 237_o §_o 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 hart_n pag._n 238_o §_o 8._o of_o nutrition_n pag._n 239_o §_o 9_o of_o augmentation_n pag._n 240_o §_o 10._o of_o death_n and_o sickness_n pag._n 241_o 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 general_a and_o in_o particular_a of_o those_o which_o belong_v to_o touch_v taste_n and_o smell_a pag._n 242_o §_o 1._o the_o connexion_n of_o the_o subsequent_a chapter_n with_o the_o precedent_n ibid._n §_o 2._o of_o the_o sense_n and_o sensible_a quality_n in_o general_n and_o of_o the_o end_n for_o which_o they_o serve_v ibid._n §_o 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 244_o §_o 4._o of_o the_o taste_n and_o its_o quality_n that_o they_o be_v body_n pag._n 245_o §_o 5._o that_o the_o smell_n and_o its_o quality_n be_v real_a body_n ibid._n §_o 6._o of_o the_o conformity_n betwixt_o the_o two_o sense_n of_o smell_v and_o taste_v p._n 246_o §_o 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 a_o send_v as_o well_o as_o any_o beast_n pag._n 247_o 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_n p._n 249_o §_o 1._o of_o the_o sense_n of_o hear_v and_o that_o sound_n be_v pure_o motion_n ibid._n §_o 2._o of_o diverse_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 pag._n 250_o §_o 3._o the_o same_o be_v confirm_v by_o the_o effect_n cause_v by_o great_a noise_n pag._n 251_o §_o 4._o that_o solid_a body_n may_v conveye_v the_o motion_n of_o the_o air_n or_o sound_n to_o the_o organ_n of_o hear_v pag._n 252_o §_o 5._o where_o the_o motion_n be_v interrupt_v there_o be_v no_o sound_n ibid._n §_o 6._o that_o not_o only_o the_o motion_n of_o the_o air_n but_o all_o other_o motion_n come_v to_o our_o ear_n make_v sound_n pag._n 253_o §_o 7._o how_o one_o sense_n may_v supply_v the_o want_n of_o a_o other_o ibid._n §_o 8._o of_o one_o who_o can_v discern_v sound_n of_o word_n with_o his_o eye_n pag._n 254_o §_o 9_o diverse_a reason_n to_o prove_v sound_a to_o be_v nothing_o else_o but_o a_o motion_n of_o some_o real_a body_n pag._n 256_o chap._n xxix_o of_o sight_n and_o colour_n pag._n 257_o §_o 1._o that_o colour_n be_v nothing_o but_o light_v mingle_v with_o darkness_n or_o the_o disposition_n off_o a_o body_n superficies_n apt_a to_o reflect_v light_a so_o mingle_v ibid._n §_o 2._o concern_v the_o disposition_n of_o those_o body_n which_o produce_v white_a or_o black_a colour_n pag._n 259_o §_o 3._o the_o former_a doctrine_n confirm_v by_o aristotle_n authority_n reason_n and_o experience_n ibid._n §_o 4._o how_o the_o diversity_n of_o colour_n do_v follow_v out_o of_o various_a degree_n of_o rarity_n and_o density_n pag._n 260_o §_o 5._o why_o some_o body_n be_v diaphanous_a other_o opacous_a pag._n 261_o §_o 6._o the_o former_a doctrine_n of_o colour_n confirm_v by_o the_o generation_n of_o white_a and_o black_a in_o body_n pag._n 262_o chap._n xxx_o of_o luminous_a or_o apparente_n colour_n pag._n 262_o §_o 1._o apparition_n of_o colour_n through_o a_o prism_n or_o triangular_a glass_n be_v of_o two_o sort_n ibid._n §_o 2._o the_o several_a part_n of_o the_o object_n make_v several_a angle_n at_o their_o entrance_n into_o the_o prism_n pag._n 263_o §_o 3._o the_o reason_n why_o some_o time_n the_o same_o object_n appear_v throwgh_n the_o prism_n in_o two_o place_n and_o in_o one_o place_n more_o lively_a in_o the_o other_o place_n more_o dim_a ibid._n §_o 4._o the_o reason_n of_o the_o various_a colour_n that_o appear_v in_o look_v throwgh_n a_o prism_n pag._n 264_o §_o 5._o the_o reason_n why_o the_o prism_n in_o one_o position_n may_v make_v the_o colour_n appear_v quite_o contrary_a to_o what_o they_o do_v when_o it_o be_v in_o a_o other_o position_n pag._n 265_o §_o 6._o the_o reason_n of_o the_o various_a colour_n in_o general_a by_o pure_a light_n pass_v through_o a_o prism_n pag_n 266_o §_o 7._o upon_o what_o side_n every_o colour_n appear_v that_o be_v make_v by_o pure_a light_n pass_v through_o a_o prism_n pag._n 267_o chap._n xxxi_o the_o cause_n of_o certain_a appearance_n in_o luminous_a colour_n with_o a_o conclusion_n of_o the_o discourse_n touch_v the_o sense_n and_o the_o sensible_a quality_n pag._n 268_o §_o 1._o the_o reason_n of_o each_o several_a colour_n in_o particular_a cause_v by_o light_n pass_v through_o a_o prism_n pag._n 268_o §_o 2._o a_o difficult_a problem_n resolve_v touch_v the_o prism_n pag._n 270_o §_o 3._o of_o the_o rainbow_n and_o how_o by_o the_o colour_n of_o any_o body_n we_o may_v know_v the_o composition_n of_o
light_a which_o two_o term_n pass_v through_o all_o the_o body_n we_o have_v notice_n of_o therefore_o proceed_v upon_o our_o ground_n before_o lay_v to_o wit_n that_o no_o body_n can_v be_v move_v of_o itself_o we_o may_v determine_v those_o motion_n to_o be_v natural_a unto_o body_n which_o have_v constant_a cause_n or_o percutient_n to_o make_v they_o alwayse_v in_o such_o body_n and_o those_o violent_a which_o be_v contrary_a to_o such_o natural_a motion_n which_o be_v suppose_v we_o must_v search_v out_o the_o cause_n that_o so_o constant_o make_v some_o body_n descend_v towards_o the_o centre_n or_o middle_n of_o the_o earth_n and_o other_o to_o rise_v and_o go_v from_o the_o centre_n by_o which_o the_o world_n be_v subject_a to_o those_o restless_a motion_n that_o keep_v all_o thing_n in_o perpetual_a flux_n in_o this_o change_a sphere_n of_o action_n and_o passion_n atom_n let_v we_o then_o begin_v with_o consider_v what_o effect_n the_o sun_n which_o be_v a_o constant_a and_o perpetual_a cause_n work_v upon_o inferior_a body_n by_o his_o be_v regular_o sometime_o present_a and_o sometime_o absent_a observe_v in_o a_o pot_n of_o water_n hang_v over_o a_o fire_n how_o the_o heat_n make_v some_o part_n of_o the_o water_n to_o ascend_v and_o other_o to_o supply_v the_o room_n by_o descend_v so_o that_o as_o long_o as_o it_o boil_v it_o be_v in_o a_o perpetual_a confuse_a motion_n up_o and_o down_o now_o have_v forme_o conclude_v that_o fire_n be_v light_a and_o light_n be_v fire_n it_o can_v not_o be_v doubt_v but_o that_o the_o sun_n do_v serve_v instead_o of_o fire_n to_o our_o globe_n of_o earth_n and_o water_n which_o may_v be_v fit_o compare_v to_o the_o boil_a pot_n and_o all_o the_o day_n long_o draw_v vapour_n from_o those_o body_n that_o his_o beam_n strike_v upon_o for_o he_o shoot_v his_o little_a dart_n of_o fire_n in_o multitude_n and_o in_o continue_a stream_n from_o his_o own_o centre_n against_o the_o python_n the_o earth_n we_o live_v on_o they_o do_v there_o overtake_v one_o a_o other_o and_o cause_v some_o degree_n of_o heat_n as_o far_o as_o they_o sink_v in_o but_o not_o be_v able_a by_o reason_n of_o their_o great_a expansion_n in_o their_o long_a journey_n to_o convert_v it_o into_o their_o own_o nature_n and_o set_v it_o on_o fire_n which_o require_v a_o high_a degree_n of_o condensation_n of_o the_o beam_n they_o do_v but_o pierce_v and_o divide_v it_o very_o subtile_o and_o cut_v some_o of_o the_o outward_a part_n of_o it_o into_o extreme_a little_a atom_n unto_o which_o they_o stick_v very_o close_o and_o be_v in_o a_o manner_n incorporate_v with_o they_o by_o reason_n of_o the_o moisture_n that_o be_v in_o they_o they_o do_v in_o their_o rebound_n back_o from_o the_o earth_n carry_v they_o along_o with_o they_o like_o a_o ball_n that_o strike_v against_o a_o moist_a wall_n do_v in_o its_o return_n from_o it_o bring_v back_o some_o of_o the_o mortar_n stick_v upon_o it_o for_o the_o distance_n of_o the_o earth_n from_o the_o sun_n be_v not_o the_o utmost_a period_n of_o these_o nimble_a body_n flight_n so_o that_o when_o by_o this_o solid_a body_n they_o be_v stop_v in_o their_o course_n forwards_o on_o they_o leap_v back_o from_o it_o and_o carry_v some_o little_a part_n of_o it_o with_o they_o some_o of_o they_o a_o far_a some_o of_o they_o a_o short_a journey_n according_a as_o their_o litlenesse_n and_o rarity_n make_v they_o fit_a to_o ascend_v as_o be_v manifest_a by_o the_o consent_n of_o all_o author_n that_o write_v of_o the_o region_n of_o the_o air_n who_o determine_v the_o low_a region_n to_o reach_v as_o far_o as_o the_o reflection_n of_o the_o sun_n and_o conclude_v this_o region_n to_o be_v very_o hot_a for_o if_o we_o mark_v how_o the_o heat_n of_o fire_n be_v great_a when_o it_o be_v incorporate_v in_o some_o dense_a body_n as_o in_o iron_n or_o in_o seacoal_n we_o shall_v easy_o conceive_v that_o the_o heat_n of_o this_o region_n proceed_v main_o out_o of_o the_o incorporation_n of_o light_n with_o those_o little_a body_n which_o stick_v to_o it_o in_o its_o reflection_n and_o experience_n testify_v the_o same_o both_o in_o our_o sultry_a day_n which_o we_o see_v be_v of_o a_o gross_a temper_n and_o ordinary_o go_v before_o rain_n as_o also_o in_o the_o hot_a springe_n of_o extreme_a cold_a country_n where_o the_o first_o heat_n be_v unsufferable_a which_o proceed_v out_o of_o the_o resolution_n of_o humidity_n congeal_v and_o in_o hot_a wind_n which_o the_o spaniard_n call_v bochornos_n from_o boca_fw-la de_fw-la horno_fw-la by_o allusion_n to_o the_o breathe_a steam_n of_o a_o oven_n when_o it_o be_v open_v which_o do_v manifest_o show_v that_o the_o heat_n of_o the_o sun_n be_v incorporate_v in_o the_o little_a body_n which_o compose_v the_o steam_n of_o that_o wind_n and_o by_o the_o principle_n we_o have_v already_o lay_v the_o same_o will_v be_v evident_a though_o we_o have_v no_o experience_n to_o instruct_v we_o for_o see_v that_o the_o body_n of_o fire_n be_v dry_a the_o wet_a part_n which_o be_v easily_a resolve_v by_o fire_n must_v needs_o stick_v unto_o they_o line_n and_o accompany_v they_o in_o their_o return_n from_o the_o earth_n now_o while_o these_o ascend_v the_o air_n must_v needs_o cause_v other_o that_o be_v of_o a_o grosser_n complexion_n to_o descend_v as_o fast_o to_o make_v room_n for_o the_o former_a and_o to_o fill_v the_o place_n they_o leave_v that_o there_o may_v be_v no_o vacuity_n in_o nature_n and_o to_o find_v what_o part_n they_o be_v and_o from_o whence_o they_o come_v that_o succeed_v in_o the_o room_n of_o light_n and_o atom_n glue_v together_o that_o thus_o ascend_v we_o may_v take_v a_o hint_n from_o the_o maxim_n of_o the_o optike_n that_o light_n reflect_v make_v equal_a angle_n whence_o suppose_v the_o superficies_n of_o the_o earth_n to_o be_v circular_a it_o will_v follow_v that_o a_o perpendicular_a to_o the_o centre_n pass_v just_a in_o the_o middle_n between_o the_o two_o ray_n the_o incident_a and_o the_o reflect_v wherefore_o the_o air_n between_o these_o two_o ray_n and_o such_o dody_n as_o be_v in_o it_o be_v equal_o press_v on_o both_o side_n those_o body_n which_o be_v just_a in_o the_o middle_n be_v near_o and_o likely_a to_o succeed_v immediate_o in_o the_o room_n of_o the_o light_n and_o atom_n which_o ascend_v from_o the_o superficies_n of_o the_o earth_n and_o their_o motion_n to_o that_o point_n be_v upon_o the_o perpendicular_a hence_o it_o be_v evident_a that_o the_o air_n and_o all_o such_o body_n as_o descend_v to_o supply_v the_o place_n of_o light_n and_o atom_n which_o ascend_v from_o the_o earth_n do_v descend_v perpendicular_o towards_o the_o centre_n of_o the_o earth_n and_o again_o such_o body_n as_o by_o the_o force_n of_o light_n be_v cut_n from_o the_o earth_n or_o water_n do_v not_o ascend_v in_o form_n of_o light_n but_o do_v incorporate_v a_o hide_a light_n and_o heat_n within_o they_o and_o thereby_o be_v rare_a than_o these_o descend_a body_n must_v of_o necessity_n be_v lift_v up_o by_o the_o descent_n of_o those_o denser_n body_n that_o go_v downwards_o because_o they_o by_o reason_n of_o their_o density_n be_v move_v with_o a_o great_a force_n and_o this_o lift_n up_o must_v be_v in_o a_o perpendicular_a line_n because_o the_o other_o descend_v on_o all_o side_n perpendicular_o must_v needs_o raise_v those_o that_o be_v between_o they_o equal_o from_o all_o side_n that_o be_v perpendicular_o from_o the_o centre_n of_o the_o earth_n and_o thus_o we_o see_v a_o motion_n set_v on_o foot_n of_o some_o body_n continual_o descend_v and_o other_o continual_o ascend_v all_o in_o perpendicular_a line_n except_v those_o which_o follow_v the_o course_n of_o light_n reflection_n again_o as_o soon_o as_o the_o decline_a sun_n grow_v weak_a or_o leave_v our_o horizon_n and_o that_o his_o beam_n vanish_v do_v leave_v the_o little_a horseman_n which_o ride_v upon_o they_o to_o their_o own_o temper_n and_o nature_n from_o whence_o they_o force_v they_o they_o find_v themselves_o surround_v by_o a_o smart_n descend_v stream_n do_v tumble_v down_o again_o in_o the_o night_n as_o fast_o as_o in_o the_o day_n they_o be_v carry_v up_o and_o crowd_v into_o their_o former_a habitation_n they_o exclude_v those_o that_o they_o find_v have_v usurp_v they_o in_o their_o absence_n and_o thus_o all_o body_n within_o reach_n of_o the_o sun_n power_n but_o especial_o our_o air_n be_v in_o perpetual_a motion_n the_o more_o rarify_v one_o ascend_v and_o the_o dense_a one_o descend_v descend_v now_o they_o because_o no_o body_n wheresoever_o they_o be_v as_o we_o have_v already_o show_v have_v any_o inclination_n to_o move_v towards_o a_o particular_a place_n otherwise_o they_o as_o they_o be_v
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