for_o this_o strange_a hypothesis_n his_o negative_a i_o find_v in_o the_o 20._o chapter_n where_o he_o endeavour_v to_o confute_v the_o two_o way_n of_o explicate_v the_o rarefaction_n and_o spring_n of_o the_o air_n namely_o that_o of_o the_o vacuist_n and_o that_o of_o the_o plenist_n concern_v the_o first_o of_o these_o we_o find_v he_o conclude_v it_o impossible_a first_o because_o he_o have_v before_o prove_v that_o there_o can_v be_v no_o vacuum_n which_o be_v do_v by_o a_o circle_n viz._n there_o be_v no_o vacuum_n in_o the_o tube_n because_o nature_n abhor_v a_o vacuum_n and_o we_o see_v nature_n abhor_v a_o vacuum_n because_o she_o will_v not_o suffer_v a_o vacuum_n in_o the_o tube_n above_o the_o mercury_n but_o to_o prevent_v it_o will_v continual_o spin_v the_o quicksilver_n into_o supe_n ficies_n and_o never_o diminish_v the_o body_n of_o it_o will_v suffer_v i_o to_o pass_v to_o his_o next_o which_o be_v that_o this_o way_n be_v false_a because_o in_o the_o experiment_n of_o the_o carp_n bladder_n the_o air_n be_v rarefy_a a_o 1000_o time_n big_a nay_o in_o respect_n of_o the_o body_n of_o gold_n it_o have_v 1000000._o time_n less_o matter_n in_o equal_a space_n and_o this_o say_v he_o be_v a_o phaenomenon_n that_o be_v impossible_a ever_o to_o be_v make_v out_o by_o interspersed_a vacuity_n now_o that_o the_o vacuist_n can_v present_o by_o so_o bold_a a_o assertion_n as_o this_o be_v make_v to_o forsake_v their_o principle_n he_o may_v perceive_v by_o these_o follow_a solution_n which_o i_o shall_v give_v of_o all_o the_o phaenomena_n he_o recite_v flow_v natural_o from_o a_o hypothesis_n that_o i_o shall_v for_o the_o present_a assume_v let_v we_o suppose_v then_o the_o particle_n of_o body_n at_o least_o those_o of_o the_o air_n to_o be_v of_o the_o form_n of_o a_o piece_n of_o ribbon_n that_o be_v to_o be_v very_o long_o slender_a thin_a and_o flexible_a laminae_fw-la coyl_v or_o wind_v up_o together_o as_o a_o cable_n piece_n of_o ribbon_n spring_n of_o a_o watch_n hoop_n or_o the_o like_a be_v we_o will_v suppose_v these_o to_o have_v all_o of_o they_o the_o same_o length_n but_o some_o to_o have_v a_o strong_a other_o a_o weak_a spring_n we_o will_v further_o suppose_v each_o of_o these_o so_o coyl_v up_o to_o have_v such_o a_o innate_a circular_a motion_n as_o that_o thereby_o they_o may_v describe_v a_o sphere_n equal_a in_o diameter_n to_o their_o own_o much_o after_o the_o manner_n that_o a_o meridian_n turn_v about_o the_o pole_n of_o a_o globe_n will_v describe_v by_o its_o revolution_n a_o sphere_n of_o the_o same_o diameter_n with_o its_o own_o in_o the_o air._n by_o this_o circular_a motion_n the_o part_n of_o the_o laminae_fw-la endeavour_v to_o recede_v from_o the_o centre_n or_o axis_n of_o their_o motion_n acquire_v a_o springiness_n outward_a like_o that_o of_o a_o watch-spring_n and_o will_v natural_o fly_v abroad_o until_o they_o be_v stretch_v out_o at_o length_n but_o that_o be_v encompass_v with_o 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themselves_o let_v we_o suppose_v i_o say_v the_o diameter_n of_o these_o particle_n to_o be_v 1_o 1000000000000_o of_o a_o inch_n and_o then_o to_o be_v much_o of_o the_o form_n of_o those_o represent_v in_o the_o 4._o figure_n by_o a_o b_o c_o d_o and_o that_o these_o particle_n when_o a_o considerable_a quantity_n of_o the_o pressure_n of_o the_o ambient_fw-la parts_z be_v take_v away_o will_v fly_v abroad_o into_o a_o coyle_n or_o zone_n ten_o time_n as_o big_a in_o diameter_n as_o before_o that_o be_v they_o will_v now_o be_v 10_o 1000000000000_o of_o a_o inch_n in_o diameter_n and_o appear_v in_o the_o form_n of_o those_o in_o the_o figure_n express_v by_o e_z f_o g_o h_o these_o zone_n whirl_v round_o as_o the_o former_a will_v describe_v a_o sphere_n a_o 1000_o time_n as_o big_a in_o bulk_n and_o thereby_o fence_v that_o space_n from_o be_v enter_v by_o any_o of_o the_o like_a zone_n this_o it_o will_v do_v suppose_v those_o sphere_n do_v immediate_o always_o touch_v each_o other_o but_o because_o of_o their_o circular_a motion_n whenever_o they_o meet_v they_o must_v necessary_o be_v beat_v and_o fly_v off_o from_o one_o another_o and_o so_o require_v a_o yet_o great_a space_n to_o perform_v their_o motion_n in_o this_o suppose_a there_o be_v no_o phaenomena_n of_o rarefaction_n which_o be_v enough_o at_o present_a to_o answer_v what_o he_o object_n but_o may_v be_v natural_o and_o intelligible_o make_v out_o as_o first_o for_o that_o of_o the_o swell_a of_o a_o carp_n bladder_n if_o we_o suppose_v some_o small_a parcel_n of_o the_o former_a compress_v laminae_fw-la to_o lie_v latitant_fw-la within_o the_o fold_n of_o it_o and_o be_v much_o coyl_v up_o together_o scarce_o to_o take_v any_o sensible_a room_n this_o bladder_n in_o the_o air_n will_v appear_v to_o contain_v very_o little_a or_o nothing_o within_o it_o whereas_o when_o the_o pressure_n of_o the_o air_n be_v take_v off_o in_o good_a part_n from_o the_o outside_n of_o it_o then_z those_z formerly_z latitant_fw-la particle_n disclose_v themselves_o by_o fly_v open_a into_o much_o big_a zone_n so_o as_o perhaps_o to_o be_v able_a to_o defend_v a_o thousand_o time_n big_a space_n from_o be_v enter_v into_o by_o their_o like_a or_o any_o other_o gross_a particle_n such_o as_o those_o of_o the_o bladder_n now_o because_o the_o pore_n of_o a_o bladder_n be_v such_o as_o be_v not_o easy_o permeable_a by_o the_o particle_n of_o air_n therefore_o these_o lurk_a particle_n so_o expand_v themselves_o must_v necessary_o plump_a out_o the_o side_n of_o the_o bladder_n and_o so_o keep_v they_o turgid_a until_o the_o pressure_n of_o the_o air_n that_o at_o first_o coyl_v they_o be_v readmit_v to_o do_v the_o same_o thing_n for_o they_o again_o next_o as_o for_o rarefaction_n by_o heat_n that_o will_v as_o natural_o follow_v as_o the_o former_a from_o this_o hypothesis_n for_o the_o atom_n of_o fire_n flow_v in_o in_o great_a number_n and_o pass_v through_o with_o a_o very_a rapid_a motion_n must_v needs_o accelerate_v the_o motion_n of_o these_o particle_n from_o which_o acceleration_n their_o spring_n or_o endeavour_v outward_a will_v be_v augment_v that_o be_v those_o zone_n will_v have_v a_o strong_a nitency_n to_o fly_v wide_a open_a for_o we_o know_v that_o the_o swift_a any_o body_n be_v move_v circular_o the_o more_o do_v the_o part_n of_o it_o endeavour_v to_o recede_v from_o the_o centre_n of_o that_o motion_n from_o whence_o if_o it_o have_v room_n will_v follow_v a_o rarefaction_n as_o for_o the_o conveyance_n of_o light_n that_o be_v according_a to_o epicurus_n perform_v by_o the_o local_a motion_n of_o peculiar_a atom_n their_o motion_n to_o and_o fro_o through_o this_o medium_n will_v be_v less_o impede_v by_o the_o rarefy_a air_n then_o by_o the_o condense_v as_o indeed_o upon_o experiment_n we_o shall_v real_o find_v they_o as_o for_o his_o three_o objection_n draw_v from_o his_o suppose_a attractive_a virtue_n of_o the_o thus_o rarefy_a air_n that_o be_v quick_o answer_v by_o deny_v it_o to_o have_v any_o power_n at_o all_o of_o attraction_n and_o by_o show_v which_o be_v already_o do_v that_o what_o effect_n he_o will_v have_v to_o be_v perform_v by_o the_o attraction_n of_o the_o include_v be_v real_o do_v by_o the_o pressure_n of_o the_o ambient_fw-la air._n and_o last_o the_o phaenomena_n of_o my_o lord_n bacon_n experiment_n be_v sufficient_o obvious_a and_o easy_a to_o be_v deduce_v so_o then_o by_o grant_v epicurus_n his_o principle_n that_o the_o atom_n or_o particle_n of_o body_n have_v a_o innate_a motion_n and_o grant_v our_o supposition_n of_o the_o determinate_a motion_n and_o figure_n of_o the_o aerial_a particle_n all_o the_o phaenomena_n of_o rarefaction_n and_o condensation_n of_o light_n sound_z heatt_z etc._n etc._n will_v natural_o and_o necessary_o follow_v and_o
the_o author_n objection_n against_o this_o first_o way_n of_o rarefaction_n will_v signify_v very_o little_a as_o to_o the_o second_o way_n of_o rarefaction_n by_o the_o intrusion_n or_o intervention_n of_o some_o subtle_a matter_n of_o aether_n into_o the_o space_n desert_v by_o the_o raresy_a particle_n which_o be_v that_o propose_v by_o the_o assertor_n of_o a_o plenum_fw-la this_o also_o be_v by_o the_o author_n condemn_v and_o brand_v with_o impossibility_n and_o why_o first_o because_o it_o be_v he_o say_v impossible_a that_o the_o abovementioned_a phaenomena_n of_o the_o carp_n bladder_n can_v be_v explain_v by_o it_o second_o because_o it_o be_v impossible_a to_o give_v a_o reason_n from_o it_o of_o the_o impetuous_a ascent_n of_o water_n admit_v into_o a_o exhaust_a receiver_n and_o three_o because_o it_o be_v impossible_a to_o explicate_v the_o phaenomena_n of_o gunpowder_n his_o reason_n to_o confirm_v which_o three_o impossibility_n because_o draw_v from_o a_o mere_a mistake_n or_o ignorance_n of_o those_o hypothesis_n which_o have_v be_v invent_v by_o the_o assertor_n of_o that_o opinion_n i_o shall_v pass_v over_o and_o content_v myself_o to_o explain_v a_o way_n how_o these_o impossibility_n may_v become_v possibility_n if_o not_o probability_n and_o the_o way_n that_o i_o shall_v take_v shall_v be_v that_o of_o the_o most_o acute_a modern_a philosopher_n mounseur_fw-fr des_fw-mi cartes_n publish_v in_o his_o philosophical_a work_n which_o be_v this_o that_o the_o air_n be_v a_o body_n consist_v of_o long_a slender_a flexible_a particle_n agitate_a or_o whirl_v round_o by_o the_o rapid_a motion_n of_o the_o globuli_fw-la coelestes_fw-la and_o the_o subtle_a matter_n of_o his_o first_o element_n whereby_o they_o be_v each_o of_o they_o enable_v to_o drive_v or_o force_v out_o of_o their_o vortice_fw-la all_o such_o other_o agitate_a particle_n now_o the_o swift_a these_o body_n be_v whirl_v round_o the_o more_o do_v their_o flexible_a part_n fly_v asunder_o and_o stretch_v themselves_o out_o and_o the_o more_o forcible_o do_v they_o resist_v the_o ingress_n of_o any_o other_o so_o agitate_a particle_n into_o their_o vortice_fw-la and_o consequent_o the_o slow_a their_o motion_n be_v the_o less_o will_v be_v their_o resistance_n and_o because_o there_o be_v a_o vast_a number_n of_o these_o whirl_v particle_n lie_v one_o above_o another_o and_o each_o particle_n have_v its_o peculiar_a gravity_n it_o will_v necessary_o follow_v that_o the_o undermost_a which_o to_o maintain_v their_o vortice_fw-la must_v resist_v so_o great_a a_o pressure_n must_v very_o much_o be_v hinder_v from_o expand_v themselves_o so_o far_o as_o otherwise_o they_o will_v be_v there_o none_o of_o those_o encompass_v agitate_a particle_n that_o lay_v in_o their_o way_n and_o that_o those_o be_v by_o any_o mean_v remove_v or_o they_o themselves_o by_o a_o more_o rapid_a motion_n of_o the_o particle_n of_o their_o vehicles_n the_o first_o and_o second_o element_n which_o be_v according_a to_o that_o hypothesis_n a_o effect_n of_o heat_n more_o swift_o and_o strong_o whirl_v round_o they_o present_o begin_v to_o expand_v themselves_o and_o maintain_v a_o big_a vortice_fw-la then_o before_o now_o to_o perform_v what_o i_o just_a now_o promise_v i_o shall_v endeavour_v to_o give_v a_o possible_a if_o not_o a_o probable_a cause_n of_o the_o object_v phaenomena_n and_o first_o for_o that_o of_o the_o carp_n bladder_n where_o the_o air_n be_v rarefy_a say_v the_o author_n 1000_o time_n it_o will_v easy_o be_v explain_v by_o suppose_v the_o few_o particle_n of_o the_o air_n which_o while_o they_o sustain_v the_o pressure_n of_o all_o the_o incumbent_a atmosphere_n inconspicuous_o luck_n within_o the_o bladder_n each_o of_o they_o be_v able_a to_o maintain_v but_o a_o very_a small_a vortice_fw-la to_o be_v by_o the_o subside_v mercury_n in_o the_o torricellian_a experiment_n free_v from_o the_o pressure_n of_o the_o air_n and_o their_o motion_n continue_v the_o same_o by_o reason_n that_o the_o transcursion_n of_o their_o vehicles_n be_v not_o at_o all_o or_o very_o little_a hinder_v either_o by_o the_o glass_n or_o bladder_n their_o part_n have_v room_n to_o expand_v themselves_o will_v fly_v abroad_o to_o such_o extension_n as_o may_v perhaps_o make_v a_o vortice_fw-la 1000_o time_n as_o big_a in_o bulk_n as_o what_o they_o be_v not_o able_a just_o before_o to_o exceed_v hence_o the_o particle_n of_o the_o air_n be_v so_o gross_a as_o not_o easy_o to_o pervade_v the_o pore_n of_o the_o bladder_n must_v necessary_o drive_v out_o the_o fides_fw-la of_o the_o bladder_n to_o its_o utmost_a extent_n and_o serve_v to_o fill_v the_o receiver_n in_o the_o magdeburgick_a experiment_n now_o whereas_o these_o particle_n will_v by_o the_o same_o pressure_n of_o the_o air_n be_v reduce_v to_o the_o same_o state_n they_o be_v in_o at_o first_o that_o be_v to_o be_v throng_v into_o a_o very_a little_a room_n and_o thereby_o be_v able_a to_o maintain_v a_o very_a small_a vortice_fw-la the_o air_n let_v in_o in_o the_o torrecellian_a experiment_n reduce_v the_o air_n in_o the_o bladder_n to_o its_o former_a inconspicuousness_n as_o the_o admission_n of_o the_o water_n in_o the_o magdeburg_n experiment_n do_v that_o receiver_n full_a of_o rarefy_a air_n into_o the_o bigness_n of_o a_o hazel_n nut._n now_o the_o water_n in_o this_o last-mentioned_a experiment_n enter_v with_o a_o great_a impetuosity_n because_o drive_v on_o with_o the_o whole_a pressure_n of_o the_o atmosphere_n and_o resist_v only_o by_o the_o small_a force_n of_o the_o so-far-rarefied_a air._n as_o for_o the_o author_n objection_n against_o this_o way_n of_o rarefaction_n draw_v from_o the_o phaenomena_n of_o gun_n powder_n i_o shall_v endeavour_v to_o answer_v it_o by_o show_v they_o possible_o explicable_a by_o a_o cartesian_a hypothesis_n for_o suppose_v those_o terrestrial_a part_n of_o the_o gun_n powder_n to_o be_v first_o at_o rest_n and_o afterward_o agitate_a by_o the_o rapid_a motion_n of_o his_o first_o element_n there_o will_v be_v sufficient_a difference_n of_o the_o former_a and_o late_a condition_n in_o respect_n of_o extension_n and_o suppose_v the_o particular_a constitution_n of_o gunpowder_n arise_v partly_o from_o the_o specific_a form_n of_o the_o particle_n of_o its_o ingredient_n nitre_n sulphur_n and_o char-coal_n and_o partly_o from_o their_o proportionate_a commistion_n to_o be_v such_o as_o will_v ready_o yield_v to_o the_o motion_n of_o his_o materia_fw-la subtilis_fw-la so_o soon_o as_o a_o ingress_n be_v admit_v to_o it_o by_o the_o fire_n of_o any_o particular_a parcel_n of_o it_o the_o expansion_n will_v be_v speedy_a enough_o so_o then_o let_v we_o suppose_v a_o barrel_n of_o gunpowder_n place_v in_o some_o close_a room_n to_o some_o grain_n of_o which_o we_o will_v suppose_v some_o actual_a fire_n to_o be_v apply_v by_o which_o actual_a fire_n the_o texture_n of_o the_o powder_n be_v such_o those_o grain_n be_v sudden_o fire_v that_o be_v many_o million_o of_o part_n which_o before_o lay_v still_o and_o at_o rest_n be_v by_o the_o action_n of_o the_o burn_a coal_n shatter_v as_o it_o be_v and_o put_v into_o a_o posture_n ready_a to_o be_v agitate_a by_o the_o rapid_a motion_n of_o the_o materia_fw-la subtilis_fw-la into_o which_o posture_n they_o be_v no_o soon_o put_v than_o agitate_a and_o whirl_v sufficient_o by_o it_o whence_o follow_v a_o vast_a expansion_n of_o that_o part_n of_o gunpowder_n so_o fire_v for_o each_o of_o its_o part_n be_v thus_o whirl_v and_o hurry_v round_o expel_v and_o beat_v off_o with_o great_a violence_n all_o the_o contiguous_a particle_n so_o as_o that_o each_o particle_n take_v up_o now_o 1000_o time_n as_o much_o elbow-room_n if_o i_o may_v so_o speak_v as_o just_a before_o serve_v its_o turn_n and_o consequent_o those_o that_o be_v outermost_a take_v every_o one_o their_o way_n direct_o from_o the_o parcel_n or_o corn_n they_o have_v lie_v quiet_a in_o be_v hurry_v away_o by_o the_o sudden_a expansion_n of_o the_o particle_n that_o lie_v next_o within_o they_o so_o that_o whatever_o grain_n or_o parcel_n of_o gunpowder_n they_o chance_v to_o meet_v with_o before_o they_o have_v lose_v their_o motion_n they_o present_o shiver_v and_o put_v into_o such_o a_o motion_n as_o make_v they_o fit_a to_o receive_v the_o action_n of_o the_o materia_fw-la subtilis_fw-la which_o subtle_a matter_n be_v every_o where_o present_a and_o nothing_o slow_a in_o perform_v its_o office_n immediate_o agitate_v those_o also_o like_o the_o former_a so_o that_o in_o a_o trice_n the_o particle_n of_o the_o whole_a barrel_n of_o gunpowder_n be_v thus_o disorder_v and_o by_o the_o motion_n the_o materia_fw-la subtilis_fw-la must_v needs_o be_v hurry_v away_o with_o so_o great_a a_o impetuosity_n on_o all_o side_n as_o not_o only_o to_o break_v in_o piece_n its_o slight_a wooden_a prison_n and_o remove_v the_o light_a particle_n of_o the_o ambient_fw-la air_n but_o huge_a
doubt_v whether_o in_o case_n it_o can_v be_v prove_v that_o in_o the_o exhaust_a globe_n we_o speak_v of_o there_o be_v no_o vacuity_n within_o nor_o any_o subtle_a matter_n permit_v to_o enter_v from_o without_o it_o be_v not_o more_o intelligible_a to_o suppose_v that_o god_n have_v create_v a_o new_a matter_n to_o join_v with_o the_o air_n in_o fill_v up_o the_o cavity_n then_o that_o the_o selfsame_a air_n shall_v adequate_o fill_v two_o thousand_o space_n whereof_o one_o be_v exact_o commensurate_a to_o it_o even_o when_o it_o be_v uncompress_v for_o divers_a eminent_a naturalist_n both_o ancient_a and_o modern_a believe_v upon_o a_o physical_a account_n the_o soul_n of_o man_n to_o be_v create_v and_o infuse_v will_v admit_v it_o as_o intelligible_a that_o god_n do_v frequent_o create_v substance_n on_o certain_a emergent_a occasion_n but_o i_o know_v that_o many_o of_o they_o will_v not_o likewise_o think_v it_o conceivable_a that_o without_o his_o immediate_a interposition_n 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mind_n from_o he_o about_o the_o possibility_n of_o such_o a_o rarefaction_n as_o he_o will_v here_o have_v our_o author_n may_v perchance_o think_v fit_a to_o grant_v if_o he_o remember_v that_o he_o himself_o say_v a_o few_o page_n after_o cum_fw-la tempus_fw-la sit_fw-la ens_fw-la essentialiter_fw-la successivum_fw-la it_o a_o ut_fw-la ne_fw-la divinitus_fw-la 175â—_n quidem_fw-la possint_fw-la dvae_fw-la ejus_fw-la part_n simul_fw-la existere_fw-la etc._n etc._n but_o not_o now_o to_o dispute_v of_o a_o power_n that_o i_o be_o more_o willing_a to_o adore_v then_o question_n i_o say_v that_o our_o controversy_n be_v not_o what_o god_n can_v do_v but_o about_o what_o can_v be_v do_v by_o natural_a agent_n not_o elevate_v above_o the_o sphere_n of_o nature_n for_o though_o god_n can_v both_o create_v and_o annihilate_v yet_o nature_n can_v do_v neither_o and_o in_o the_o judgement_n of_o true_a philosopher_n i_o suppose_v our_o hypothesis_n will_v need_v no_o other_o advantage_n to_o 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bring_v to_o far_a approximation_n without_o penetrate_v each_o other_o at_o least_o in_o some_o of_o their_o part_n so_o that_o i_o see_v not_o how_o the_o examiner_n condensation_n can_v be_v perform_v without_o penetration_n of_o dimension_n a_o thing_n that_o philosopher_n of_o all_o age_n have_v look_v upon_o as_o by_o no_o mean_n to_o be_v admit_v in_o nature_n and_o our_o author_n himself_o speak_v somewhere_o at_o the_o same_o rate_n where_o to_o the_o question_n why_o the_o wall_n that_o enclose_v fire_v gunpowder_n must_v be_v blow_v asunder_o respondeo_fw-la say_v he_o haec_fw-la omne_fw-la inde_fw-la accidere_fw-la quod_fw-la pulvis_fw-la ille_fw-la sic_fw-la accensus_fw-la &_o in_fw-la flammam_fw-la conversus_fw-la 159._o long_o majus_fw-la spatium_fw-la nunc_fw-la occupet_fw-la quam_fw-la prius_fw-la unde_fw-la fit_n ut_fw-la cum_fw-la totum_fw-la cubiculum_fw-la antea_fw-la fuerit_fw-la plenissimum_fw-la disrumpantur_fw-la sic_fw-la parietes_fw-la ne_fw-la detur_fw-la corporum_fw-la penetratio_fw-la in_o the_o magdeburgick_a experiment_n he_o tell_v we_o as_o we_o have_v hear_v already_o that_o the_o whole_a capacity_n of_o the_o globe_n be_v fill_v with_o a_o extreme_o thin_a body_n but_o not_o now_o to_o examine_v how_o proper_o he_o call_v that_o a_o rare_a body_n which_o according_a to_o he_o intercept_v neither_o pore_n nor_o any_o heterogeneous_a substance_n the_o great_a or_o lesser_a absence_n of_o which_o make_v man_n call_v a_o body_n more_o or_o less_o dense_a not_o to_o insist_v on_o this_o i_o say_v let_v we_o consider_v that_o before_o the_o admission_n of_o water_n into_o the_o exhaust_a globe_n there_o be_v according_a to_o he_o two_o thousand_o half_a inch_n of_o a_o substance_n which_o however_o it_o be_v produce_v or_o get_v thither_o be_v a_o true_a and_o real_a body_n and_o that_o after_o the_o admission_n of_o the_o water_n there_o remain_v in_o the_o same_o globe_n beside_o the_o water_n that_o come_v in_o no_o more_o than_o 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a_o body_n into_o a_o spirit_n and_o confound_v their_o notion_n attribute_v to_o the_o former_a the_o discriminate_n and_o least_o easy_o conceivable_a property_n of_o the_o late_a and_o this_o argument_n be_v i_o confess_v with_o i_o of_o that_o weight_n that_o this_o alone_a will_v keep_v i_o from_o admit_v the_o examiner_n hypothesis_n yet_o if_o any_o happy_a contemplator_n shall_v prove_v so_o sharp-sighted_a as_o to_o devise_v and_o clear_o propose_v a_o way_n of_o make_v the_o rarefaction_n and_o condensation_n hither_o to_o argue_v against_o intelligible_a to_o i_o he_o be_v not_o like_a to_o find_v i_o obstinate_a nor_o indeed_o be_v there_o sufficient_a cause_n why_o his_o succeed_a in_o that_o attempt_n shall_v make_v our_o adversary_n hypothesis_n preferable_a to_o we_o since_o that_o will_v not_o prove_v it_o either_o necessary_a or_o so_o much_o as_o sufficient_a but_o only_o answer_v some_o of_o the_o argument_n that_o tend_v to_o prove_v it_o be_v not_o intelligible_a 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kind_n of_o inversion_n of_o we_o and_o suppose_v the_o spring_n or_o motion_n of_o restitution_n in_o the_o air_n to_o tend_v inward_o as_o according_a to_o we_o it_o tend_v outward_o it_o can_v be_v that_o if_o the_o supposition_n itself_o be_v what_o i_o think_v i_o have_v prove_v it_o be_v not_o true_a many_o of_o the_o phaenomena_n will_v be_v plausible_o enough_o explicable_a by_o it_o the_o same_o motion_n in_o a_o intermediate_v body_n be_v in_o many_o case_n producible_a alike_o whether_o we_o suppose_v it_o to_o be_v thrust_v or_o draw_v provide_v both_o the_o endeavour_n tend_v the_o same_o way_n but_o then_o we_o may_v be_v satisfy_v whether_o the_o effect_n be_v to_o be_v ascribe_v to_o pulsion_n or_o to_o traction_n as_o they_o common_o speak_v though_o indeed_o the_o late_a seem_v reducible_a to_o the_o former_a if_o we_o can_v find_v out_o a_o experiment_n wherein_o there_o be_v reason_n such_o a_o effect_n shall_v follow_v in_o case_n pulsion_n be_v the_o cause_n
admit_v to_o be_v divisible_a though_o according_a to_o his_o principle_n it_o may_v equalise_v the_o length_n of_o million_o of_o his_o other_o indivisibles_n nor_o admit_v a_o successive_a motion_n but_o instantaneous_a though_o that_o do_v necessary_o put_v a_o body_n into_o two_o three_o ten_o a_o hundred_o etc._n etc._n place_n at_o once_o but_o will_v have_v these_o also_o to_o be_v indivisible_a haste_n make_v i_o pass_v over_o the_o absurdity_n about_o the_o contact_n of_o a_o circle_n and_o a_o line_n and_o to_o comprise_v in_o short_a all_o that_o great_a explication_n he_o have_v give_v of_o this_o and_o other_o intricate_a as_o he_o call_v they_o problem_n which_o be_v this_o that_o the_o reason_n of_o the_o celerity_n of_o the_o motion_n of_o some_o one_o of_o these_o indivisibles_n above_o another_o be_v that_o it_o pass_v through_o a_o great_a part_n of_o a_o indivisible_a in_o the_o same_o instant_n than_o the_o slow_a that_o be_v in_o plain_a sense_n no_o more_o than_o this_o one_o body_n be_v swift_a than_o another_o because_o it_o be_v move_v fast_o from_o whence_o he_o draw_v several_a corollary_n as_o that_o hence_o may_v be_v give_v a_o reason_n why_o a_o eagle_n be_v swift_a than_o a_o tortoise_n viz._n because_o it_o move_v fast_o i_o shall_v have_v solve_v several_a objection_n which_o may_v be_v bring_v against_o the_o divisibility_n of_o quantity_n in_o infinitum_fw-la but_o that_o as_o all_o the_o scholastic_a writer_n be_v full_a of_o they_o so_o it_o be_v a_o subject_a which_o we_o be_v least_o able_a to_o dispute_v of_o have_v very_o little_a information_n of_o the_o nature_n of_o infinity_o from_o the_o sense_n finis_fw-la the_o citation_n english_v chap._n 2._o pag._n 4._o cum_fw-la tota_fw-la vis_fw-la etc._n etc._n be_v the_o whole_a power_n of_o the_o spring_n of_o the_o air_n depend_v upon_o the_o aequilibrium_fw-la of_o its_o weight_n with_o twenty_o nine_o inch_n and_o a_o half_a of_o quicksilver_n so_o that_o this_o spring_n do_v neither_o more_o nor_o less_o in_o a_o shut_a place_n then_o be_v do_v by_o that_o aequilibrium_fw-la in_o a_o open_a place_n it_o be_v manifest_a see_v we_o have_v show_v the_o aequilibrium_fw-la to_o be_v plain_o fictitious_a and_o imaginary_a that_o the_o spring_n ascribe_v to_o the_o air_n be_v so_o likewise_o ibid._n nam_fw-la si_fw-la tubus_fw-la etc._n etc._n for_o if_o a_o tube_n but_o twenty_o inch_n long_o such_o as_o we_o use_v in_o our_o first_o argument_n be_v not_o quite_o fill_v with_o quicksilver_n as_o before_o but_o a_o little_a space_n be_v leave_v betwixt_o the_o mercury_n and_o the_o finger_n on_o the_o top_n of_o the_o tube_n in_o which_o air_n only_o may_v abide_v we_o shall_v find_v that_o the_o finger_n below_o be_v remove_v the_o finger_n on_o the_o top_n will_v not_o only_o be_v draw_v downward_o as_o before_o but_o the_o quicksilver_n shall_v descend_v also_o and_o that_o notable_o viz._n as_o much_o as_o so_o small_a a_o parcel_n of_o air_n can_v be_v extend_v by_o such_o a_o descend_a weight_n so_o that_o if_o instead_o of_o air_n water_n or_o any_o other_o liquor_n which_o be_v not_o so_o easy_o extend_v be_v put_v in_o its_o place_n there_o will_v be_v no_o descent_n at_o all_o hence_o i_o say_v against_o this_o opinion_n a_o argument_n be_v frame_v for_o if_o the_o external_a air_n can_v keep_v up_o those_o twenty_o inch_n of_o quicksilver_n from_o descend_v as_o we_o have_v prove_v how_o shall_v it_o keep_v up_o twenty_o nine_o inch_n and_o a_o half_a assure_o these_o can_v no_o way_n be_v reconcile_v p._n 5._o dice_v fortè_fw-la etc._n etc._n you_o will_v perchance_o say_v that_o the_o quicksilver_n therefore_o do_v in_o the_o allege_a case_n descend_v because_o it_o be_v thrust_v down_o by_o that_o parcel_n of_o air_n which_o dilate_v itself_o by_o its_o own_o spring_n ibid._n sic_fw-la deberet_fw-la etc._n etc._n so_o shall_v the_o finger_n be_v rather_o thrust_v from_o the_o top_n of_o the_o tube_n than_o thereby_o fasten_v to_o it_o because_o this_o dilatation_n must_v be_v make_v as_o well_o upward_o as_o downward_o p._n 6._o concipi_fw-la etc._n etc._n it_o can_v be_v conceive_v how_o that_o air_n shall_v dilate_v itself_o or_o thrust_v down_o the_o mercury_n unless_o by_o take_v up_o a_o great_a place_n which_o thing_n these_o author_n be_v much_o against_o assert_v that_o rarefaction_n can_v be_v make_v no_o other_o way_n then_o by_o corpuscle_n or_o vacuity_n chap._n 3._o p._n 7._o si_fw-mi etc._n etc._n if_o you_o take_v a_o tube_n open_a at_o both_o end_n of_o a_o good_a length_n suppose_v forty_o inch_n long_o and_o fill_v it_o with_o mercury_n and_o place_v your_o finger_n on_o the_o top_n as_o before_o take_v away_o your_o low_a finger_n you_o will_v find_v the_o mercury_n to_o descend_v even_o to_o its_o wont_a station_n and_o your_o finger_n on_o the_o top_n to_o be_v strong_o draw_v within_o the_o tube_n and_o to_o stick_v close_o unto_o it_o whence_o again_o it_o be_v evident_o conclude_v that_o the_o mercury_n place_v in_o its_o own_o station_n be_v not_o there_o uphold_v by_o the_o external_a air_n but_o suspend_v by_o a_o certain_a internal_a cord_n who_o upper_a end_n be_v fasten_v to_o the_o finger_n draw_v and_o fasten_v it_o after_o this_o manner_n into_o the_o tube_n chap._n 4._o p._n 8_o 9_o sumatur_fw-la etc._n etc._n take_v a_o tube_n short_a than_o twenty_o nine_o inch_n and_o a_o half_a for_o instance_n of_o twenty_o digit_n not_o shut_v as_o hitherto_o at_o one_o end_n but_o with_o both_o end_n open_a let_v this_o tube_n its_o orifice_n be_v immerse_v in_o restagnant_fw-la mercury_n and_o one_o finger_n be_v place_v underneath_o that_o the_o mercury_n to_o be_v pour_v in_o run_v not_o through_o be_v fill_v with_o mercury_n and_o then_o another_o finger_n be_v apply_v to_o its_o orifice_n to_o close_v it_o well_o which_o be_v do_v if_o you_o draw_v away_o your_o low_a finger_n the_o upper_a will_v be_v find_v to_o be_v strong_o draw_v and_o suck_v into_o the_o tube_n and_o so_o stiff_o to_o adhere_v to_o it_o or_o rather_o to_o the_o quicksilver_n as_o i_o shall_v hereafter_o show_v that_o it_o will_v elevate_v the_o tube_n itself_o with_o all_o the_o quicksilver_n and_o make_v it_o continue_v to_o hang_v pendulous_a in_o the_o vessel_n from_o which_o experiment_n this_o opinion_n be_v most_o clear_o refute_v for_o see_v according_a to_o it_o the_o quicksilver_n in_o such_o a_o tube_n but_o twenty_o inch_n long_o must_v be_v thrust_v upward_o by_o the_o preponderate_a air_n it_o will_v never_o by_o it_o be_v explain_v how_o this_o finger_n be_v so_o draw_v downward_o and_o make_v so_o strong_o to_o stick_v to_o the_o tube_n for_o it_o can_v by_o the_o air_n thrust_v upward_o be_v thus_o draw_v downward_o p._n 11._o quod_fw-la vel_fw-la etc._n etc._n which_o be_v thence_o confirm_v because_o if_o that_o preponderate_a air_n succeed_v as_o be_v assert_v in_o the_o place_n of_o the_o low_a finger_n which_o be_v withdraw_v that_o be_v if_o it_o uphold_v the_o quicksilver_n after_o the_o same_o manner_n which_o it_o be_v uphold_v by_o the_o low_a finger_n apply_v under_o it_o it_o be_v manifest_a according_a to_o this_o opinion_n that_o the_o finger_n on_o the_o top_n ought_v not_o to_o be_v more_o draw_v downward_o after_o the_o low_a finger_n be_v remove_v then_o before_o see_v then_o that_o experience_n teach_v the_o contrary_a it_o be_v manifest_v that_o opinion_n must_v be_v false_a chap._n 5._o p._n 12._o quarto_fw-la etc._n etc._n in_o the_o four_o place_n it_o be_v impugned_a because_o thence_o it_o will_v follow_v that_o quicksilver_n through_o a_o like_a tube_n may_v be_v suck_v with_o the_o same_o easiness_n out_o of_o a_o vessel_n that_o water_n be_v suck_v out_o of_o the_o same_o which_o not_o withstand_v be_v contrary_a to_o experience_n by_o which_o we_o be_v teach_v that_o water_n be_v easy_o draw_v into_o the_o mouth_n of_o he_o that_o suck_v whereas_o quicksilver_n can_v be_v draw_v thither_o by_o his_o utmost_a endeavour_n nay_o scarce_o unto_o the_o middle_n of_o the_o tube_n the_o sequel_n i_o thus_o manifest_a because_o see_v according_a to_o this_o opinion_n that_o the_o liquor_n underneath_o whether_o it_o be_v water_n or_o mercury_n may_v so_o ascend_v no_o more_o be_v require_v but_o that_o the_o air_n shut_v in_o the_o tube_n may_v be_v draw_v upward_o by_o suck_v which_o be_v draw_v up_o the_o liquor_n underneath_o will_n immediate_o ascend_v be_v thrust_v thither_o by_o the_o external_a air_n now_o preponderate_v as_o pecquet_n declare_v in_o his_o anatomical_a discourse_n p._n 63._o it_o be_v manifest_a that_o the_o mercury_n may_v be_v suck_v out_o with_o the_o same_o easiness_n that_o water_n be_v suck_v out_o with_o which_o be_v so_o evident_o against_o experience_n the_o opinion_n from_o whence_o it_o