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london_n who_o the_o learned_a harvey_n one_o of_o his_o master_n have_v tell_v i_o be_v exceed_v strong_a to_o labour_n and_o very_o able_a to_o carry_v any_o necessary_a burden_n and_o to_o remove_v thing_n dexterous_o according_a to_o the_o occasion_n and_o yet_o he_o be_v so_o void_a of_o feel_v that_o he_o use_v to_o grind_v his_o hand_n against_o the_o wall_n and_o against_o course_n lumber_n when_o he_o be_v employ_v to_o rummage_v any_o in_o so_o much_o that_o they_o will_v run_v with_o blood_n through_o grate_v of_o the_o skin_n without_o his_o feel_n of_o what_o occasion_v it_o in_o our_o way_n the_o reason_n of_o both_o these_o condition_n of_o people_n the_o paralitike_a and_o the_o insensible_a be_v easy_a to_o be_v render_v for_o they_o proceed_v out_o
which_o the_o contain_v substance_n shall_v go_v out_o as_o the_o moisten_a of_o the_o string_n and_o mouth_n of_o a_o purse_n almost_o shut_v it_o until_o in_o some_o for_o example_n the_o stomach_n after_o a_o meal_n the_o humour_n be_v attenuate_v by_o little_a and_o little_a get_v out_o subtile_o and_o so_o leave_v less_o weight_n in_o the_o stomach_n the_o bag_n which_o weighth_n down_o low_o than_o the_o nether_a orifice_n at_o which_o the_o digest_v meat_n issue_v rise_v a_o little_a and_o this_o rise_n of_o it_o be_v also_o further_v by_o the_o wrinkle_a up_o and_o shorten_v of_o the_o upper_a part_n of_o the_o stomach_n which_o still_o return_v into_o its_o natural_a corrugation_n as_o the_o mass_n of_o liquid_a meat_n leave_v soak_v it_o which_o it_o do_v by_o degree_n still_o as_o more_o and_o more_o go_v out_o and_o so_o what_o remain_v fill_v less_o place_n and_o reach_v not_o so_o high_a of_o the_o stomach_n and_o thus_o at_o length_n the_o residue_n and_o thick_a substance_n of_o the_o meat_n after_o the_o thin_a be_v get_v out_o in_o steam_n and_o the_o middling_a part_n be_v boil_a over_o in_o liquor_n come_v to_o press_v and_o gravitate_fw-la whole_o upon_o the_o orifice_n of_o the_o stomach_n which_o be_v then_o help_v by_o the_o figure_n and_o lie_v of_o the_o rest_n of_o the_o stomach_n and_o its_o string_n and_o mouth_n relax_v by_o have_v the_o juice_n which_o swell_v they_o squeeze_v out_o of_o they_o it_o open_v itself_o and_o give_v way_n unto_o that_o which_o lie_v so_o heavy_a upon_o it_o to_o tumble_v out_o in_o other_o for_o example_n in_o a_o woman_n with_o child_n the_o enclose_a substance_n retain_v first_o by_o such_o a_o course_n of_o nature_n as_o we_o have_v set_v down_o break_v itself_o a_o passage_n by_o force_n and_o open_v the_o orifice_n at_o which_o it_o be_v to_o go_v out_o by_o violence_n when_o all_o circumstance_n be_v ripe_a according_a to_o nature_n institution_n physic_n but_o yet_o there_o be_v the_o expulsion_n which_o be_v make_v by_o physic_n that_o require_v a_o little_a declaration_n it_o be_v of_o five_o kind_n vomit_v purge_v by_o stool_n by_o urine_n sweat_v and_o salivation_n every_o one_o of_o which_o seem_v to_o consist_v of_o two_o part_n namely_o the_o disposition_n of_o the_o thing_n to_o be_v purge_v and_o the_o motion_n of_o the_o nerve_n or_o fiber_n for_o the_o expulsion_n as_o for_o example_n when_o the_o physician_n give_v a_o purge_n it_o work_v two_o thing_n the_o one_o be_v to_o make_v some_o certain_a humour_n more_o liquid_a and_o purgeable_a they_o the_o rest_n the_o other_o be_v to_o make_v the_o stomach_n or_o belly_n suck_n or_o vent_v this_o humour_n for_o the_o first_o the_o property_n of_o the_o purge_n must_v be_v to_o precipitate_v that_o humour_n out_o of_o the_o rest_n of_o the_o blood_n or_o if_o it_o be_v thick_a to_o dissolve_v it_o that_o it_o may_v run_v easy_o for_o the_o second_o it_o ordinary_o heat_v the_o stomach_n and_o by_o that_o mean_n it_o cause_v the_o stomach_n to_o suck_v out_o of_o the_o vein_n and_o so_o to_o draw_v from_o all_o part_n of_o the_o body_n beside_o this_o it_o ordinary_o fill_v the_o belly_n with_o wind_n which_o occasion_v those_o gripe_n man_n feel_v when_o they_o take_v physic_n and_o be_v cause_n of_o the_o gut_n discharge_v those_o humour_n which_o otherwise_o they_o will_v retain_v the_o like_a of_o this_o happen_v in_o salivation_n for_o the_o humour_n be_v by_o the_o same_o mean_v bring_v to_o the_o stomach_n and_o thence_o sublime_v up_o to_o be_v spitten_v out_o as_o we_o see_v in_o those_o who_o take_v mercury_n into_o their_o body_n either_o in_o substance_n or_o in_o smoke_n or_o by_o application_n do_v vent_v cold_a humour_n from_o any_o part_n the_o mercury_n rise_v from_o all_o the_o body_n up_o to_o the_o mouth_n of_o the_o patient_a as_o to_o the_o helm_n of_o a_o sublimatory_n and_o the_o like_o some_o say_v of_o tobacco_n as_o for_o vomit_v it_o be_v in_o a_o manner_n whole_o the_o operation_n of_o the_o fiber_n provoke_v by_o the_o feel_n of_o some_o inconvenient_a body_n which_o make_v the_o stomach_n wrinkle_n itself_o and_o work_v and_o strive_v to_o cast_v out_o what_o offend_v it_o sweat_v seem_v to_o be_v cause_v by_o the_o heat_n of_o some_o introus_a body_n by_o the_o stomach_n which_o be_v of_o subtle_a part_n be_v by_o heat_n disperse_v from_o the_o middle_n to_o the_o circumference_n and_o carry_v with_o it_o light_a humour_n which_o turn_v into_o water_n as_o they_o come_v out_o into_o the_o air_n and_o thus_o you_o see_v in_o general_a and_o as_o much_o as_o concern_v we_o to_o declare_v what_o the_o natural_a faculty_n be_v and_o this_o according_a to_o galen_n his_o own_o mind_n who_o affirm_v that_o these_o faculty_n do_v follow_v the_o complexion_n or_o the_o temper_n of_o the_o part_n of_o a_o man_n body_n motion_n have_v explicate_v how_o voluntary_a motion_n proceed_v from_o the_o brain_n our_o next_o consideration_n ought_v to_o be_v to_o examine_v what_o it_o be_v that_o such_o a_o object_n as_o we_o bring_v by_o mean_n of_o the_o sense_n into_o the_o brain_n from_o without_o do_v contribute_v to_o make_v the_o brain_n apply_v itself_o to_o work_v such_o voluntary_a motion_n to_o which_o purpose_n we_o will_v go_v a_o step_n or_o two_o back_n to_o meet_v the_o object_n at_o its_o entrance_n into_o the_o sense_n and_o from_o thence_o accompany_v it_o in_o all_o its_o journey_n and_o motion_n onwards_o the_o object_n which_o strike_v at_o the_o sense_n door_n and_o get_v in_o mingle_v itself_o with_o the_o spirit_n it_o find_v there_o be_v either_o comforme_v and_o agreeable_a to_o the_o nature_n and_o temper_n of_o those_o spirit_n or_o it_o be_v not_o that_o be_v to_o say_v in_o short_a it_o be_v either_o please_a or_o displease_v to_o the_o live_a creature_n or_o it_o may_v be_v of_o a_o three_o kind_n which_o be_v neither_o of_o these_o we_o may_v term_v indifferent_a in_o which_o sort_n soever_o the_o object_n affect_v the_o sense_n the_o spirit_n carry_v it_o immediate_o to_o the_o brain_n unless_o some_o distemper_n or_o strong_a thought_n or_o other_o accident_n hinder_v they_o now_o if_o the_o object_n be_v of_o the_o three_o kind_n that_o be_v be_v indiffent_a as_o soon_o as_o it_o have_v strike_v the_o brain_n it_o rebound_v to_o the_o circle_n of_o the_o memory_n and_o there_o be_v speedy_o join_v to_o other_o of_o its_o own_o nature_n it_o find_v they_o annex_v to_o some_o please_a or_o displease_v thing_n or_o it_o do_v not_o if_o not_o in_o beast_n it_o serve_v to_o little_a use_n and_o in_o man_n it_o remain_v there_o until_o it_o be_v call_v for_o but_o if_o either_o in_o its_o own_o nature_n it_o be_v please_v or_o displease_v or_o afterwards_o in_o the_o memory_n it_o become_v join_v to_o some_o please_a or_o annoy_v fellowshipp_n present_o the_o hart_n be_v sensible_a of_o it_o for_o the_o hart_n be_v join_v to_o the_o brain_n by_o straight_o and_o large_a nerve_n full_a of_o strong_a spirit_n which_o ascend_v from_o the_o hart_n it_o be_v impossible_a but_o that_o it_o must_v have_v some_o communication_n with_o those_o motion_n which_o pass_v in_o the_o brain_n upon_o which_o the_o hart_n or_o rather_o the_o spirit_n about_o it_o be_v either_o dilate_a or_o compress_v and_o these_o motion_n may_v be_v either_o total_o of_o one_o kind_n or_o moderate_v and_o allay_v by_o the_o mixture_n of_o its_o contrary_n if_o of_o the_o former_a sort_n one_o of_o they_o we_o call_v joy_n the_o other_o grief_n which_o do_v continue_v about_o the_o hart_n and_o peradventure_o do_v oppress_v it_o if_o they_o be_v in_o the_o utmost_a extremity_n without_o send_v any_o due_a proportion_n of_o spirit_n to_o the_o brain_n until_o they_o settle_v a_o little_a and_o grow_v more_o moderate_a now_o when_o these_o motion_n be_v moderate_a they_o immediate_o send_v up_o some_o abundance_n of_o spirit_n to_o the_o brain_n which_o if_o they_o be_v in_o a_o convenient_a proportion_n they_o be_v by_o the_o brain_n thrust_v into_o such_o nerve_n as_o be_v fit_a to_o receive_v they_o and_o swell_v they_o they_o give_v motion_n to_o the_o muscle_n and_o tendon_n that_o be_v fasten_v to_o they_o and_o they_o do_v move_v the_o whole_a body_n or_o what_o part_n of_o it_o be_v under_o command_n of_o those_o nerve_n that_o be_v thus_o fill_v and_o swell_v with_o spirit_n by_o the_o brain_n if_o the_o object_n be_v conformable_a to_o the_o live_a creature_n than_o the_o brain_n send_v spirit_n into_o such_o nerve_n as_o caâ—â—y_v the_o body_n to_o it_o but_o if_o otherwise_o it_o cause_v a_o motion_n of_o aversion_n or_o flight_n from_o it_o to_o the_o cause_n of_o this_o latter_a we_o give_v
of_o intention_n and_o remission_n and_o other_o do_v not_o ibid._n §_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 pag._n 142._o 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 pag._n 144._o §_o 1._o the_o author_n intent_n in_o this_o and_o the_o follow_a chapter_n ibid._n §_o 2._o that_o body_n may_v be_v rarify_v both_o by_o outward_a heat_n and_o how_o this_o be_v perform_v pag._n 145._o §_o 3._o of_o the_o great_a effect_n for_n rarefaction_n pag._n 147._o §_o 4._o the_o first_o manner_n of_o condensation_n by_o heat_n pag._n 148._o §_o 5._o the_o second_o manner_n of_o condensation_n by_o cold_a pag._n 149._o §_o 6._o that_o ice_n be_v not_o water_v rarify_v but_o condense_v pag._n 151._o §_o 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 pag._n 152._o §_o 8._o how_o part_n of_o the_o same_o or_o diverse_a body_n be_v join_v more_o strong_o together_o by_o condensation_n pag._n 153._o §_o 9_o vacuite_n can_v not_o 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 a_o other_o pag._n 154._o §_o 10._o the_o true_a reason_n of_o the_o former_a effect_n pag._n 155._o §_o 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 pag._n 156._o chap._n xviii_o of_o a_o other_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 pag._n 157._o §_o 1._o what_o attraction_n be_v and_o from_o whence_o it_o proceed_v ibid._n §_o 2._o the_o true_a sense_n of_o the_o maxim_n that_o nature_n abhor_v from_o vacuity_n pag._n 158._o §_o 3._o the_o true_a reason_n of_o attraction_n pag._n 159._o §_o 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 pag._n 160._o §_o 5._o the_o doctrine_n touch_v the_o attraction_n of_o water_n in_o syphon_n ibid._n §_o 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 pag._n 161._o §_o 7._o concern_v attraction_n cause_v by_o fire_n pag._n 162._o §_o 8._o concern_v attraction_n make_v by_o virtue_n of_o hot_a body_n amulet_n etc_n pag._n 163._o §_o 9_o the_o natural_a reason_n give_v for_o diverse_a operation_n esteem_v by_o some_o to_o be_v magical_a ibid._n 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 electricall_a attraction_n pag._n 166._o §_o 1._o what_o be_v filtration_n and_o how_o it_o be_v effect_v ibid._n §_o 2._o what_o cause_v the_o water_n in_o filtration_n to_o ascend_v pag._n 167._o §_o 3._o why_o the_o filter_n will_v not_o drop_n unless_o the_o label_n hang_v low_a than_o the_o water_n ibid._n §_o 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 pag._n 168._o §_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 pag._n 170._o §_o 6._o concern_v the_o nature_n of_o those_o body_n which_o do_v shrink_v and_o stretch_v pag._n 171._o §_o 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 ibid._n §_o 8._o concern_v electricall_a attraction_n and_o the_o cause_n of_o it_o pag._n 172._o §_o 9_o cabeus_n his_o opinion_n refute_v concern_v the_o cause_n of_o electricall_a motion_n pag._n 174._o chap._n xx._n of_o the_o loadestone_n generation_n and_o its_o particular_a motion_n pag._n 175._o §_o 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 torride_a zone_n ibid._n §_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 a_o other_o pag._n 176._o §_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 diverse_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 te_fw-mi other_z pag._n 177._o §_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 pag._n 179._o §_o 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 loadestone_n ibid._n §_o 6._o a_o method_n for_o make_v experience_n upon_o any_o subject_n pag._n 181._o §_o 7._o the_o loadestone_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 ibid._n §_o 8._o experiment_n to_o prove_v that_o the_o loadestone_n work_v by_o emanation_n meet_v with_o agree_v stream_n pag._n 182._o 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 pag._n 185._o .1_o the_o operation_n of_o the_o loadestone_n be_v wrought_v by_o body_n and_o not_o by_o quality_n ibid._n §_o 2._o objection_n against_o the_o former_a position_n answer_v pag._n 186._o §_o 3._o the_o loadestone_n be_v imbue_v with_o his_o virtue_n from_o a_o other_o body_n ibid._n §_o 4._o the_o virtue_n of_o the_o loadestone_n be_v a_o double_a and_o not_o one_o simple_a virtue_n 188._o §_o 5._o the_o virtue_n of_o the_o laodestone_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 ibid._n §_o 6._o the_o laodestone_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 ibid._n §_o 7._o put_v two_o loadestone_n within_o the_o sphere_n of_o one_o a_o other_o every_o part_n of_o one_o laodestone_n do_v not_o agree_v with_o every_o part_n of_o the_o other_o loadestone_n pag_n 189._o §_o 8._o concern_v the_o declination_n and_o other_o respect_n of_o a_o needle_n towards_o the_o loadestone_n it_o touch_v ibid._n §_o 9_o the_o virtue_n of_o the_o laodestone_n go_v from_o end_n to_o end_v in_o line_n almost_o paralelle_n to_o the_o axis_fw-la pag._n 191._o §_o 10._o the_o virtue_n of_o loadestone_n be_v not_o perfect_o spherical_a though_o the_o stone_n be_v such_o pag._n 192._o §_o 11._o the_o intention_n of_o nature_n in_o all_o the_o operation_n of_o the_o loadestone_n be_v to_o make_v a_o union_n betwixt_o the_o attractive_a and_o attract_a body_n ibid._n §_o 12._o the_o main_a globe_n of_o the_o earth_n be_v not_o a_o loadestone_n ibid._n §_o 13._o the_o laodestone_n be_v generate_v in_o all_o part_n or_o climate_n of_o the_o earth_n pag._n 193._o §_o 14._o the_o conformity_n betwixt_o the_o two_o motion_n of_o magnetike_a thing_n and_o of_o heavy_a thing_n ibid._n chap._n xxii_o a_o solution_n of_o certain_a problem_n concern_v the_o loadestone_n and_o a_o short_a sum_n of_o the_o whole_a doctrine_n touch_v it_o pag._n 194._o §_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 loadestone_n ibid._n §_o 2._o whether_o any_o body_n beside_o magnetike_a one_o be_v attractive_a ibid._n §_o 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 downwards_o pag._n 195._o §_o 4._o why_o loadestone_n affect_v iron_n better_o than_o one_o a_o other_o ibid._n §_o 5._o gilbert_n reason_v refute_v touch_v a_o cap_a loadestone_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 ibid._n §_o 6._o galileus_n his_o opinion_n touch_v the_o former_a effect_n refute_v pag._n 196._o §_o 7._o the_o author_n solution_n to_o the_o former_a question_n pag._n 197._o §_o 8._o the_o reason_n why_o in_o the_o former_a case_n a_o lesser_a loadestone_n do_v draw_v the_o interjacent_a iron_n from_o the_o great_a pag._n 198._o §_o 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 pag._n 199._o §_o 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 a_o other_o time_n less_o pag._n 200._o §_o 11._o the_o whole_a doctrine_n of_o the_o loadestone_n sum_v up_o in_o short_a pag._n 201._o chap._n xxiii_o a_o description_n of_o the_o two_o sort_n of_o live_a creature_n plantes_n and_o animal_n and_o how_o they_o be_v frame_v in_o common_a
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 forwards_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 unto_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 alwayse_n 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 to_o have_v twice_o as_o much_o water_n run_v out_o in_o the_o same_o time_n unto_o which_o i_o answer_v out_o of_o the_o same_o ground_n as_o before_o that_o because_o in_o run_v twice_o as_o fast_o there_o go_v out_o double_a 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 double_a 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 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 of_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 experience_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_n 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 the_o other_o 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 loose_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 can_v be_v lose_v but_o must_v have_v its_o adequate_a effect_n one_o way_n or_o other_o let_v we_o then_o first_o suppose_v the_o body_n strike_v to_o be_v a_o hard_a body_n of_o no_o exceed_a biggnesse_n in_o which_o case_n if_o the_o stroke_n light_v perpendiculary_a upon_o it_o it_o will_v carry_v such_o a_o body_n before_o it_o but_o if_o the_o body_n be_v too_o great_a and_o have_v its_o part_n so_o conjoin_v as_o that_o they_o be_v weak_a they_o the_o stroke_n in_o this_o case_n the_o stroke_n drive_v one_o part_n before_o it_o and_o so_o break_v it_o from_o the_o rest_n but_o last_o if_o the_o part_n of_o the_o strike_a body_n be_v so_o easy_o cessible_a as_o without_o difficulty_n the_o stroke_n can_v divide_v they_o than_o it_o enter_v into_o such_o a_o body_n until_o it_o have_v spend_v its_o force_n so_o that_o now_o make_v up_o our_o account_n we_o see_v that_o a_o equal_a effect_n proceed_v from_o a_o equal_a force_n in_o all_o the_o three_o case_n though_o in_o themselves_o they_o be_v far_o different_a but_o we_o be_v apt_a to_o account_v that_o effect_n great_a which_o be_v more_o considerable_a unto_o we_o by_o the_o profitt_a or_o damage_v it_o bring_v us._n and_o therefore_o we_o usual_o say_v that_o the_o blow_n which_o shake_v a_o wall_n or_o beat_v it_o down_o and_o kill_v man_n with_o the_o stone_n it_o scatter_v abroad_o have_v a_o great_a effect_n than_o that_o which_o penetrate_v far_o into_o a_o mud_n wall_n and_o do_v little_a harm_n for_o that_o innocuousnesse_n of_o the_o effect_n make_v that_o although_o in_o itself_o it_o be_v as_o great_a as_o the_o other_o yet_o it_o be_v little_o observe_v or_o consider_v this_o discourse_n draw_v on_o a_o other_o increase_n which_o be_v to_o declare_v how_o motion_n cease_v and_o to_o sum_n that_o up_o in_o short_a we_o say_v that_o when_o motion_n come_v unto_o rest_n it_o decrease_v and_o pass_v through_o all_o the_o degree_n of_o celerity_n and_o tardity_n that_o be_v between_o rest_n and_o the_o height_n 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 that_o it_o do_v 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 some_o thing_n against_o the_o body_n which_o be_v move_v or_o some_o thing_n 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 upon_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 the_o ten_o chapter_n of_o gravity_n and_o levity_n and_o of_o local_a motion_n common_o term_v natural_a they_o it_o be_v now_o time_n to_o consider_v that_o distinction_n of_o motion_n which_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 unto_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 extrinsecall_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 vainsh_fw-mi to_o nothing_o but_o on_o the_o other_o side_n live_a creature_n do_v manifesty_n 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 which_o 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 withal_o and_o particulary_a to_o those_o which_o be_v call_v heavy_a and_o
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 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_a than_o any_o other_o body_n from_o which_o other_o do_v for_o the_o most_o part_n decline_v some_o way_n by_o reason_n of_o their_o weight_n angle_n now_o the_o particular_a law_n of_o reflection_n be_v that_o the_o line_n incident_a and_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 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-mi cartes_n have_v excellent_o set_v down_o in_o his_o book_n of_o dioptrike_n by_o the_o example_n of_o a_o ball_n strike_v by_o a_o rackett_n against_o the_o earth_n or_o any_o resist_a body_n the_o substance_n where_o of_o be_v as_o follow_v 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 pendant_n when_o it_o be_v remove_v from_o its_o perpendicular_a will_v restore_v itself_o thereunto_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 not_o cease_v on_o a_o sudden_a it_o must_v needs_o be_v carry_v out_o of_o the_o force_n of_o that_o motion_n direct_o the_o contrary_a way_n until_o the_o force_n of_o gravity_n overcome_v the_o velocity_n it_o must_v be_v bring_v back_o again_o to_o the_o perpendicular_a which_o be_v do_v likewise_o with_o velocity_n it_o must_v send_v it_o again_o towards_o the_o place_n from_o which_o it_o fall_v at_o the_o first_o and_o in_o this_o course_n of_o motion_n it_o must_v continue_v for_o a_o while_n every_o undulation_n be_v weak_a than_o other_o until_o at_o last_o it_o quite_o cease_v by_o the_o course_n of_o nature_n settle_v the_o air_n in_o its_o due_a situation_n according_a to_o the_o natural_a cause_n that_o work_v upon_o it_o and_o in_o this_o very_a 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 serve_v it_o for_o a_o reflectent_a body_n and_o yet_o such_o a_o reflectent_a body_n as_o hinder_v not_o the_o passage_n through_o but_o only_o hinder_v the_o passage_n from_o be_v in_o a_o straight_a line_n with_o the_o line_n incident_a wherefore_o the_o light_n must_v needs_o take_v a_o ply_v as_o beat_v from_o those_o part_n towards_o a_o line_n draw_v from_o the_o illuminant_fw-la and_o fall_v perpendicular_o upon_o the_o resist_a superficies_n and_o therefore_o be_v term_v by_o mathematician_n to_o be_v refract_v or_o break_v towards_o the_o perpendicular_a now_o at_o the_o very_o go_v out_o again_o of_o the_o light_n the_o second_o superficies_n if_o it_o be_v parallel_n to_o the_o former_a must_v needs_o upon_o a_o contrary_a cause_n strike_v it_o the_o contrary_a way_n which_o be_v term_v from_o the_o perpendicular_a but_o before_o we_o wade_v any_o deep_a into_o this_o difficulty_n refraction_n we_o can_v not_o omit_v a_o word_n of_o the_o manner_n of_o explicate_a 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 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