Selected quad for the lemma: cause_n

Word A	Word B	Word C	Word D	Occurrence	Frequency Band	MI	MI Band	Prominent
cause_n	body_n	drink_v	eat_v	1,720	5	7.3129	4	false

Text snippets containing the quad

ID	Title	Author	Corrected Date of Publication (TCP Date of Publication)	STC	Words	Pages
A60282	Natural philosophy improven by new experiments touching the mercurial weather-glass, the hygroscope, eclipsis, conjunctions of Saturn and Jupiter, by new experiments, touching the pressure of fluids, the diving-bell, and all the curiosities thereof : to which is added some new observations, and experiments, lately made of several kinds : together with a true relation of an evil spirit, which troubled a mans family for many days : lastly, there is a large discourse anent coal, coal-sinks, dipps, risings, and streeks of coal, levels running of mines, gaes, dykes, damps, and wild-fire / by G.S.	Sinclair, George, d. 1696.	1683 (1683)	Wing S3855; ESTC R15622	205,371	320

they_o outward_a it_o be_v certain_a the_o more_o air_n be_v in_o the_o ark_n the_o more_o easy_a be_v respiration_n therefore_o it_o be_v more_o easy_a to_o breath_n when_o the_o ark_n be_v but_o down_o 5_o fathom_n than_o when_o it_o be_v down_o 10_o or_o 15._o it_o be_v probable_a a_o man_n may_v live_v within_o the_o ark_n it_o be_v 40_o inch_n deep_a and_o 36_o inch_n wide_a at_o the_o deepness_n of_o ten_o fathom_n near_o two_o hour_n whereas_o if_o it_o be_v round_o and_o narrow_a above_o in_o form_n of_o a_o bell_n he_o can_v not_o continue_v a_o hour_n it_o be_v very_o easy_a to_o try_v how_o long_o other_o creature_n may_v live_v in_o it_o for_o example_n dog_n and_o such_o like_a or_o fowl_n as_o hen_n pheasant_n or_o dove_n they_o may_v easy_o be_v enclose_v from_o come_v out_o for_o though_o the_o whole_a mouth_n of_o the_o ark_n be_v shut_v up_o except_o as_o much_o passage_n as_o will_v receive_v a_o man_n fist_n yet_o it_o will_v operate_v as_o well_o that_o way_n as_o the_o other_o and_o there_o a_o little_a door_n may_v be_v make_v to_o open_v and_o shut_v at_o pleasure_n it_o be_v observe_v that_o by_o long_o tarry_v under_o the_o water_n in_o the_o bell_n the_o air_n become_v gross_a and_o misty_a which_o hinder_v a_o man_n from_o see_v about_o he_o the_o cause_n of_o this_o be_v vapour_n that_o come_v from_o the_o stomach_n lung_n and_o other_o part_n of_o the_o body_n especial_o from_o the_o stomach_n when_o the_o ventricle_n be_v full_a of_o meat_n it_o be_v not_o fit_a then_o that_o a_o man_n about_o to_o dive_v shall_v eat_v too_o much_o or_o drink_v too_o much_o especial_o such_o liquor_n as_o sack_n or_o brandy_n that_o beget_v many_o fume_n and_o vapour_n if_o a_o man_n be_v necessitate_v to_o tarry_v a_o pretty_a while_n below_o fresh_a air_n may_v be_v send_v down_o from_o above_o in_o bottle_n or_o bladder_n even_o as_o much_o as_o may_v fill_v up_o the_o place_n desert_v by_o the_o contract_v air._n it_o be_v observe_v by_o some_o that_o have_v be_v under_o the_o water_n that_o their_o ear_n have_v be_v so_o trouble_v that_o for_o a_o long_a time_n they_o have_v find_v difficulty_n to_o hear_v distinct_o the_o reason_n of_o this_o must_v be_v from_o the_o great_a pressure_n the_o tympanum_fw-la have_v suffer_v from_o the_o imprison_a air_n of_o the_o bell._n the_o organ_n of_o hear_v be_v soon_o trouble_v especial_o when_o a_o man_n be_v near_o to_o a_o great_a gun_n when_o it_o be_v fire_v and_o sure_o when_o a_o man_n be_v but_o 34_o foot_n down_o the_o air_n within_o the_o ark_n will_v be_v of_o double_a bensil_n put_v the_o case_n the_o man_n go_v down_o 68_o foot_n or_o 13_o or_o 14_o fathom_n the_o bensil_n be_v tripled_a that_o be_v to_o say_v if_o the_o air_n above_o have_v five_o degree_n of_o pressure_n in_o it_o the_o air_n of_o the_o bell_n at_o 68_o foot_n deep_a will_v have_v 15_o degree_n of_o pressure_n therefore_o the_o tympanum_fw-la of_o the_o ear_n that_o be_v but_o a_o small_a and_o thin_a membran_n must_v be_v sore_o distress_v that_o be_v overbended_a and_o press_v inward_a even_o as_o while_o a_o man_n set_v upon_o a_o drum_n head_n a_o great_a weight_n v_o g._n a_o bullet_n of_o lead_n or_o iron_n of_o 20_o or_o 30_o pound_n the_o skin_n by_o this_o suffer_v a_o extraordinary_a pressure_n whereby_o it_o be_v in_o hazard_n to_o be_v rend_v it_o be_v probable_a if_o a_o man_n shall_v go_v very_o far_o down_o the_o tympanum_fw-la may_v be_v in_o hazard_n of_o break_v or_o be_v rend_v in_o two_o piece_n there_o be_v a_o great_a pressure_n upon_o the_o one_o side_n from_o the_o air_n without_o than_o upon_o the_o other_o side_n from_o the_o internal_a air_n within_o which_o be_v think_v to_o be_v within_o the_o tympanum_fw-la there_o remain_v another_o phenomenon_n to_o be_v explicate_v and_o it_o be_v this_o the_o further_a up_o the_o ark_n come_v from_o the_o ground_n of_o the_o water_n towards_o the_o top_n the_o water_n within_o it_o subside_n and_o settle_v down_o more_o and_o more_o towards_o the_o mouth_n the_o reason_n of_o it_o be_v because_o the_o further_o up_o the_o pressure_n of_o the_o water_n be_v the_o less_o and_o therefore_o the_o contract_a air_n get_v liberty_n to_o expand_v and_o dilate_v itself_o and_o so_o thrust_v down_o the_o water_n from_o pq_n to_o lm_o in_o a_o word_n by_o what_o proportion_n the_o air_n be_v contract_v in_o go_v down_o by_o that_o same_o proportion_n it_o dilate_v and_o open_v itself_o in_o come_v up_o this_o let_v we_o see_v as_o there_o be_v disadvantage_n in_o go_v down_o from_o the_o contraction_n of_o the_o air_n so_o there_o be_v advantage_n in_o come_v up_o from_o the_o dilatation_n of_o it_o some_o think_v that_o the_o coldness_n of_o the_o water_n be_v the_o cause_n why_o the_o air_n be_v contract_v in_o the_o ark_n such_o be_v those_o who_o deny_v the_o pressure_n of_o it_o but_o this_o fancy_n be_v easy_o refute_v because_o in_o assert_v this_o they_o must_v maintain_v the_o further_o down_o the_o cold_a be_v the_o great_a if_o this_o be_v then_o far_o more_o air_n must_v be_v contract_v in_o go_v down_o from_o 10_o to_o 15_o fathom_n than_o in_o pass_v from_o 5_o to_o 10_o see_v as_o they_o say_v the_o further_o down_o the_o cold_a be_v the_o great_a and_o therefore_o the_o contraction_n of_o the_o air_n must_v be_v the_o great_a that_o be_v to_o say_v there_o must_v be_v more_o quantity_n of_o air_n contract_v in_o the_o one_o space_n than_o in_o the_o other_o but_o so_o it_o be_v that_o the_o further_o down_o the_o contraction_n be_v the_o less_o they_o judge_v likewise_o the_o coldness_n of_o the_o water_n to_o be_v the_o cause_n why_o the_o side_n of_o empty_a vessel_n be_v break_v in_o go_v down_o but_o if_o this_o be_v than_o a_o strong_a vessel_n shall_v go_v no_o further_o down_o than_o a_o weak_a vessel_n see_v cold_a can_v pierce_v through_o the_o side_n of_o the_o one_o as_o well_o as_o through_o the_o side_n of_o the_o other_o and_o why_o be_v it_o that_o a_o bladder_n full_a of_o wind_n will_v go_v down_o 40_o or_o 50_o fathom_n without_o burst_v yea_o 100_o and_o yet_o a_o stone-bottle_n or_o glass-bottle_n can_v go_v beyond_o 20_o or_o 30_o if_o cold_a have_v in_o it_o that_o power_n to_o break_v the_o side_n of_o a_o strong_a bottle_n it_o must_v be_v far_o more_o able_a to_o burst_v the_o side_n of_o a_o thin_a bladder_n this_o difference_n be_v clear_o explicate_v from_o the_o pressure_n of_o the_o water_n but_o i_o defy_v any_o man_n to_o show_v the_o difference_n from_o the_o coldness_n of_o it_o it_o be_v to_o be_v observe_v that_o in_o all_o such_o experiment_n of_o sink_v of_o vessel_n as_o hogshead_n barrel_n and_o bottle_n they_o must_v be_v close_o on_o all_o side_n therefore_o if_o a_o man_n desire_v to_o know_v how_o far_o down_o a_o glass-bottle_n be_v able_a to_o go_v without_o burst_v he_o must_v stop_v the_o mouth_n of_o it_o exact_o with_o a_o piece_n of_o wood_n and_o cement_n in_o set_v down_o the_o dimension_n of_o the_o ark_n i_o have_v restrict_v they_o to_o 40_o inch_n high_a and_o 36_o inch_n wide_a but_o if_o any_o man_n be_v desirous_a to_o enlarge_v they_o or_o make_v they_o less_o he_o may_v do_v it_o only_o it_o be_v to_o be_v observe_v that_o the_o large_a the_o ark_n be_v the_o footstool_n that_o sink_v it_o must_v be_v the_o heavy_a yet_o it_o have_v this_o advantage_n that_o it_o contain_v much_o air_n which_o be_v the_o great_a perfection_n of_o it_o one_o of_o a_o lesser_a size_n have_v this_o advantage_n that_o it_o be_v more_o tractable_a and_o easy_a to_o let_v down_o and_o to_o be_v pull_v up_o but_o these_o thing_n be_v best_a know_v from_o experience_n or_o if_o a_o man_n please_v he_o may_v calculate_v as_o the_o ark_n be_v a_o most_o useful_a device_n for_o profit_n so_o it_o be_v excellent_a for_o pleasure_n and_o recreation_n if_o a_o man_n be_v dispose_v to_o see_v the_o ground_n and_o channel_n of_o deep_a water_n or_o be_v incline_v to_o find_v out_o hydrostatical_a conclusion_n a_o knowledge_n very_o profitable_a and_o which_o few_o have_v attain_v to_o though_o it_o seem_v somewhat_o difficult_a to_o enter_v the_o ark_n and_o go_v down_o below_o the_o water_n yet_o a_o little_a use_n will_v expel_v all_o fear_n then_o a_o man_n may_v go_v down_o with_o less_o hazard_n and_o fear_v in_o the_o ark_n then_o in_o the_o bell_n because_o he_o may_v convenient_o fasten_v his_o hand_n to_o each_o side_n of_o the_o ark_n if_o need_n be_v he_o may_v convenient_o sit_v as_o in_o a_o chair_n all_o the_o time_n of_o down_o go_v and_o up-coming_a by_o fix_v a_o

pillar_n of_o mercury_n each_o one_o of_o they_o 29_o inch_n high_a it_o follow_v of_o necessity_n that_o the_o mercury_n within_o the_o tub_n must_v be_v as_o high_a as_o r._n it_o be_v no_o wonder_n to_o see_v the_o silver_n halt_v at_o r_o provide_v rx_n and_o zs_n be_v two_o bulk_n of_o mercury_n environ_v the_o pipe_n as_o the_o outward_a water_n environ_n the_o wide_a and_o narrow_a pipe_n neither_o aught_o any_o to_o wonder_v when_o the_o silver_n fall_v down_o and_o rest_v at_o r_o nothing_o environ_v the_o pipe_n but_o air_n see_v the_o pressure_n of_o the_o air_n be_v equivalent_a to_o the_o weight_n of_o 29_o inch_n of_o quicksilver_n this_o experiment_n be_v easy_o make_v take_v therefore_o a_o slender_a glass-pipe_n of_o any_o length_n beyond_o 30_o inch_n open_a at_o both_o end_n but_o the_o low_a end_n q_n must_v be_v draw_v so_o small_a by_o a_o flame_n of_o a_o lamp_n that_o the_o entry_n may_v be_v no_o wide_o than_o may_v admit_v the_o point_n of_o a_o small_a needle_n or_o the_o hair_n of_o one_o head_n then_o stop_v the_o say_a orifice_n pour_v in_o mercury_n above_o at_o the_o orifice_n n_o till_o the_o pipe_n be_v complete_o full_a next_o close_o the_o say_a orifice_n with_o wet_a paper_n and_o the_o pulp_n of_o your_o finger_n and_o open_v the_o low_a orifice_n you_o shall_v find_v which_o be_v very_o delightful_a to_o behold_v the_o mercury_n spring_v out_o like_v unto_o a_o small_a silver_n thread_n and_o fall_v down_o from_o the_o top_n n_o shall_v rest_v at_o r_o the_o motion_n cease_v at_o the_o narrow_a orifice_n q._n this_o show_v evident_o that_o there_o be_v not_o need_v always_o of_o stagnant_a mercury_n for_o try_v the_o torricellian_a experiment_n but_o only_o when_o the_o mouth_n of_o the_o pipe_n below_o be_v wide_a for_o be_v narrow_a the_o silver_n run_v slow_o out_o and_o consequent_o subside_v slow_o above_o and_o come_v down_o slow_o to_o r_o there_o rest_v but_o when_o the_o mouth_n be_v wide_o below_o the_o silver_n fall_v down_o so_o quick_o that_o it_o go_v beyond_o r_o before_o it_o can_v recover_v itself_o which_o recovery_n will_v never_o be_v unless_o there_o be_v stagnant_a mercury_n to_o run_v up_o again_o from_o what_o be_v say_v we_o see_v first_o that_o when_o one_o part_n of_o a_o surface_n of_o water_n or_o air_n be_v more_o burden_a than_o another_o the_o burden_a part_n present_o yield_v till_o it_o be_v no_o more_o burden_a than_o the_o other_o this_o be_v clear_a from_o the_o fall_n down_o of_o the_o water_n from_o e_z to_z g_z which_o can_v be_v support_v by_o the_o part_n i_o because_o more_o burden_a than_o the_o rest_n we_o see_v second_o that_o the_o element_n of_o air_n rest_v upon_o the_o surface_v of_o all_o body_n with_o a_o considerable_a weight_n otherwise_o it_o can_v not_o sustain_v the_o water_n before_o it_o fall_v down_o from_o e_z to_z g_z for_o if_o it_o do_v not_o rest_n upon_o the_o surface_n mh_o with_o weight_n the_o water_n can_v never_o be_v suspend_v see_v the_o application_n of_o the_o finger_n to_o the_o orifice_n e_o be_v only_o the_o accidental_a cause_n of_o this_o sustentation_n we_o see_v three_o that_o according_a to_o the_o difference_n of_o natural_a weight_n between_o two_o fluid_n so_o be_v the_o proportion_n of_o altitude_n between_o two_o of_o their_o cylinder_n therefore_o air_n be_v reckon_v 14000_o time_n light_a than_o mercury_n it_o follow_v that_o the_o cylinder_n of_o mercury_n sustain_v by_o the_o air_n must_v be_v 14000_o time_n low_o and_o short_a than_o the_o cylinder_n of_o air_n that_o sustain_v it_o which_o appear_v from_o this_o experiment_n to_o be_v true_a see_v by_o the_o pressure_n of_o the_o air_n which_o be_v think_v to_o be_v about_o 7000_o fathom_n high_a 29_o inch_n of_o mercury_n be_v support_v between_o r_o and_o x._o in_o a_o word_n if_o air_n be_v natural_o 14000_o time_n light_a than_o mercury_n which_o be_v very_o probable_a then_o must_v the_o altitude_n of_o it_o common_o call_v the_o atmosphere_n be_v fourteen_o thousand_o time_n nine_o and_o twenty_o inch_n that_o be_v 406000_o or_o of_o foot_n 33833._o experiment_n iii_o figure_n 6._o while_o the_o outward_a and_o inward_a water_n be_v of_o the_o same_o altitude_n withdraw_v the_o inward_a air_n eglantine_n by_o suction_n or_o by_o any_o other_o device_n you_o think_v fit_a and_o you_o will_v find_v the_o water_n rise_v as_o high_a as_o e_z which_o i_o suppose_v to_o be_v 34_o foot_n above_o mgh_n the_o same_o phenomenon_n happen_v in_o take_v the_o air_n out_o of_o the_o narrow_a pipe_n fk_n the_o reason_n be_v still_o unequal_a pressure_n for_o in_o remove_v the_o air_n that_o be_v within_o the_o pipe_n the_o part_n of_o the_o surface_n m_o and_o the_o part_n h_n remain_v burden_a while_o the_o part_n g_z be_v free_v of_o its_o burden_n therefore_o this_o part_n of_o the_o surface_n be_v liberate_v of_o its_o burden_n that_o come_v down_o through_o the_o pipe_n instant_o rise_v and_o climb_v up_o as_o far_o as_o the_o outward_a air_n rest_v upon_o m_n and_o h_n can_v raise_v it_o which_o be_v to_o e_o 34_o foot_n for_o the_o pressure_n of_o the_o air_n upon_o the_o surface_v of_o all_o water_n according_a to_o the_o 25_o theorem_fw-la be_v equivalent_a to_o the_o weight_n of_o 34_o foot_n of_o water_n must_v raise_v the_o say_a water_n in_o the_o pipe_n 34_o foot_n you_o do_v not_o wonder_v why_o it_o rise_v from_o i_o to_o g_o as_o in_o the_o first_o experiment_n no_o more_o ought_v you_o to_o wonder_n why_o it_o rise_v from_o g_z to_z e_z see_v the_o weight_n of_o the_o air_n do_v the_o same_o thing_n that_o 34_o foot_n of_o water_n rest_v upon_o the_o surface_n mh_o will_v do_v from_o this_o experiment_n we_o see_v first_o that_o the_o pressure_n of_o the_o air_n be_v the_o proper_a cause_n of_o the_o motion_n of_o water_n up_o through_o pump_n and_o siphons_n or_o any_o other_o instrument_n that_o be_v use_v in_o water-work_n of_o that_o kind_n for_o if_o the_o weight_n of_o the_o air_n rest_v upon_o the_o surface_n mh_o be_v the_o cause_n why_o the_o water_n climb_v up_o from_o g_z to_z e_z the_o same_o must_v be_v the_o cause_n why_o the_o stagnant_a water_n follow_v the_o sucker_n of_o the_o pump_n while_o it_o be_v pull_v up_o and_o the_o same_o be_v the_o cause_n why_o water_n ascend_v the_o leg_n of_o a_o siphon_n and_o be_v the_o cause_n why_o motion_n continue_v after_o suction_n be_v end_v we_o see_v second_o that_o every_o press_v fluid_a have_v a_o sphere_n of_o activity_n to_o which_o it_o be_v able_a to_o raise_v the_o fluid_a that_o be_v press_v this_o be_v evident_a in_o this_o experiment_n because_o the_o pressure_n of_o the_o air_n rest_v upon_o mh_o be_v able_a to_o raise_v the_o water_n the_o height_n of_o e_o in_o the_o wide_a pipe_n and_o the_o height_n of_o f_o in_o the_o narrow_a and_o no_o further_o even_o though_o the_o say_v pipe_n be_v far_o long_o and_o this_o altitude_n and_o high_a point_n be_v precise_o 34_o foot_n between_o air_n and_o water_n we_o see_v three_o that_o it_o be_v all_o one_o matter_n whether_o pump_n and_o siphons_n be_v wide_a or_o narrow_a whether_o the_o tub_n of_o the_o baroscope_n be_v wherein_o the_o mercury_n be_v suspend_v of_o a_o large_a diameter_n or_o of_o a_o lesser_a diameter_n this_o be_v also_o evident_a from_o the_o same_o experiment_n see_v there_o be_v no_o more_o difficulty_n in_o cause_v the_o water_n ascend_v the_o wide_a pipe_n than_o in_o cause_v it_o ascend_v the_o narrow_a one_o and_o the_o reason_n be_v because_o the_o press_a fluid_n repect_v not_o the_o press_v fluid_a according_a to_o its_o thickness_n and_o breadth_n but_o only_o according_a to_o its_o altitude_n therefore'it_v as_o easy_a for_o the_o air_n to_o press_v up_o water_n through_o a_o pump_n four_o foot_n in_o diameter_n as_o to_o press_v it_o up_o through_o a_o pump_n but_o one_o foot_n in_o diameter_n experiment_n iv._o figure_n 7._o this_o schematism_n represent_v a_o large_a vessel_n full_a of_o water_n who_o first_o and_o visible_a surface_n be_v dehk_v the_o second_o that_o be_v imaginary_a be_v li_z six_o foot_n below_o it_o the_o three_o of_o the_o same_o kind_n be_v mg_n six_o foot_n low_o the_o four_o be_v nfo_n six_o foot_n yet_o low_o the_o last_o and_o low_a be_v abc_n there_o be_v here_o also_o four_o tub_n or_o rather_o one_o tub_n under_o four_o divers_a position_n with_o both_o end_n open_a after_o this_o tub_n da_fw-la be_v thrust_v below_o the_o water_n till_o it_o ascend_v as_o high_a as_o d_o in_o it_o lift_v it_o up_o between_o your_o finger_n till_o it_o have_v the_o position_n of_o the_o second_o pipe_n of_o and_o then_o you_o shall_v see_v as_o the_o

see_v four_a that_o the_o pressure_n or_o bensil_n of_o a_o fluid_a can_v affect_v the_o scale_n of_o a_o balance_n but_o only_o the_o natural_a weight_n we_o see_v five_o that_o a_o body_n natural_o heavy_a than_o water_n weigh_v in_o water_n because_o the_o stone_n fg_v make_v the_o water_n about_o it_o 10_o pound_n heavy_a if_o it_o be_v inquire_v whether_o body_n that_o be_v natural_o light_a will_v weigh_v in_o water_n i_o answer_v if_o they_o be_v of_o any_o sensible_a weight_n they_o weigh_v as_o well_o as_o the_o other_o for_o this_o cause_n i_o except_v air._n for_o though_o they_o be_v never_o so_o light_a in_o respect_n of_o water_n yet_o if_o they_o have_v any_o considerable_a gravity_n with_o they_o they_o will_v make_v the_o water_n heavy_a they_o be_v among_o put_v the_o case_n the_o body_n be_v a_o cube_n of_o timber_n of_o six_o inch_n weigh_v sixteen_o ounce_n and_o that_o a_o cube_n of_o water_n of_o that_o quantity_n weigh_v 112_o ounce_n here_o be_v a_o great_a 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air_n it_o will_v not_o weigh_v in_o water_n because_o in_o this_o sense_n no_o body_n weigh_v in_o water_n but_o that_o which_o be_v natural_o heavy_a than_o water_n as_o lead_v or_o stone_n in_o this_o sense_n water_n do_v not_o weigh_v in_o water_n as_o will_v be_v see_v in_o the_o 17_o experiment_n experiment_n ix_o figure_n 13._o take_v a_o glass-pipe_n 70_o inch_n long_o or_o thereabout_a and_o of_o any_o wideness_n have_v the_o upper_a end_n h_n hermetical_o seal_v the_o low_a end_n c_o complete_o open_v and_o fill_v it_o with_o mercury_n and_o cause_v a_o diver_n carry_v it_o down_o to_o the_o ground_n of_o the_o sea_n mn_v where_o i_o suppose_v be_v stand_v the_o vessel_n abde_n with_o stagnant_a mercury_n and_o drown_v the_o end_n below_o the_o surface_n ab_fw-la this_o be_v do_v the_o mercury_n fall_v from_o the_o upper_a end_n h_n to_o the_o point_n g_o and_o there_o halt_v the_o space_n hg_v be_v empty_a for_o understand_v this_o experiment_n i_o shall_v propose_v 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light_a than_o mercury_n than_o they_o can_v be_v of_o equal_a weight_n unless_o the_o one_o be_v 14_o time_n high_o than_o the_o other_o now_o suppose_v the_o weight_n of_o the_o air_n upon_o the_o surface_n like_a to_o be_v equivalent_a to_o 34_o foot_n of_o water_n or_o which_o be_v the_o same_o thing_n to_o 29_o inch_n of_o mercury_n the_o surface_n of_o the_o stagnant_a mercury_n ab_fw-la must_v be_v as_o much_o burden_v with_o the_o incumb_a water_n and_o the_o air_n together_o as_o if_o it_o have_v real_o rest_v upon_o it_o a_o pillar_n of_o mercury_n 58_o inch_n high_a if_o this_o be_v than_o it_o follow_v by_o necessity_n that_o there_o must_v be_v a_o equality_n of_o weight_n between_o the_o pondus_fw-la of_o the_o mercury_n in_o the_o tub_n and_o the_o potentia_fw-la of_o the_o surface_n dce_n or_o which_o be_v all_o one_o thing_n that_o the_o part_n c_o on_o which_o the_o pillar_n rest_v be_v no_o more_o burden_v than_o the_o part_n d_o or_o e._n for_o if_o 34_o foot_n of_o water_n and_o 34_o foot_n of_o water_n be_v equivalent_a for_o weight_n to_o 58_o inch_n of_o mercury_n then_o must_v the_o part_n d_o and_o e_o be_v as_o much_o burden_v with_o the_o say_a weight_n as_o the_o part_n c_o be_v burden_v with_o the_o pillar_n within_o the_o tub_n see_v both_o be_v of_o the_o same_o height_n therefore_o the_o power_n and_o force_v of_o the_o imaginary_a surface_n of_o the_o stagnant_a mercury_n dce_n be_v of_o the_o same_o strength_n with_o the_o weight_n of_o the_o pillar_n gfb_n and_o this_o let_v we_o see_v the_o reason_n why_o the_o whole_a 70_o inch_n can_v be_v suspend_v for_o if_o the_o outward_a pressure_n that_o be_v upon_o ab_fw-la be_v but_o equivalent_a to_o the_o pressure_n of_o 58_o it_o can_v never_o make_v the_o surface_n dce_o able_a to_o support_v 70._o to_o make_v it_o evident_a if_o any_o doubt_n that_o the_o mercury_n be_v suspend_v by_o the_o weight_n of_o the_o water_n and_o the_o weight_n of_o the_o air_n superad_v let_v a_o diver_n 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between_o f_o and_o e_o be_v keep_v up_o by_o the_o pressure_n of_o the_o air._n we_o see_v second_o that_o this_o pressure_n be_v according_a to_o arithmetical_a progression_n as_o 1_o 2_o 3_o 4_o 5._o because_o in_o go_v down_o the_o first_o 14_o inch_n the_o mercury_n rise_v one_o inch_n in_o go_v down_o the_o second_o 14_o inch_n it_o rise_v two_o in_o go_v down_o the_o three_o 14_o inch_n it_o rise_v three_o and_o so_o forward_o we_o see_v three_o though_o a_o water_n be_v 100_o fathom_n deep_a yea_o 1000_o yet_o the_o pressure_n of_o the_o air_n above_o be_v find_v at_o the_o bottom_n for_o suppose_v this_o experiment_n be_v 100_o fathom_n deep_a yet_o

90_o inch_n will_v give_v 15_o foot_n but_o 15_o of_o water_n in_o height_n and_o six_o inch_n thick_a be_v the_o just_a weight_n of_o it_o in_o a_o balance_n viz._n 208_o pound_n we_o see_v second_o the_o broad_a and_o large_a the_o surface_n of_o a_o fluid_a be_v it_o be_v the_o more_o able_a and_o strong_a to_o support_v a_o heavy_a burden_n therefore_o the_o part_n of_o a_o surface_n of_o water_n six_o inch_n square_v every_o way_n will_v carry_v a_o far_o great_a weight_n than_o a_o part_n four_o inch_n square_a though_o a_o surface_n of_o water_n 34_o or_o 35_o foot_n deep_a be_v not_o able_a to_o sustain_v a_o cylinder_n of_o gold_n if_o it_o exceed_v 28_o or_o 29_o inch_n in_o height_n yet_o take_v a_o cylinder_n of_o gold_n 10_o foot_n high_a and_o reduce_v it_o by_o make_v it_o thick_a to_o the_o height_n of_o 20_o inch_n a_o surface_n of_o water_n little_o more_o than_o 24_o foot_n deep_o will_v sustain_v it_o or_o reduce_v a_o cylinder_n 10_o foot_n high_a which_o require_v 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a_o cylinder_n of_o gold_n 28_o inch_n high_a yet_o though_o it_o be_v as_o large_a and_o broad_a as_o a_o millstone_n if_o it_o do_v not_o exceed_v the_o say_a height_n the_o air_n be_v able_a to_o sustain_v it_o for_o the_o same_o cause_n if_o it_o be_v possible_a to_o free_v a_o millstone_n of_o the_o air_n that_o rest_v upon_o it_o the_o air_n below_o will_v lift_v it_o from_o the_o ground_n and_o carry_v it_o up_o many_o fathom_n even_o till_o it_o come_v to_o a_o surface_n equal_a in_o power_n to_o the_o weight_n of_o the_o stone_n or_o if_o a_o large_a millstone_n be_v demit_v from_o the_o top_n of_o the_o atmosphere_n towards_o the_o earth_n it_o can_v hardly_o touch_v the_o ground_n be_v detain_v by_o the_o way_n by_o a_o surface_n counterpoise_v it_o or_o if_o it_o do_v touch_v through_o the_o swiftness_n of_o the_o motion_n it_o will_v sure_o as_o it_o be_v rebound_n and_o be_v carry_v up_o again_o it_o be_v always_o to_o be_v remember_v that_o in_o such_o trial_n the_o 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further_o down_o and_o the_o light_a it_o be_v it_o sink_v the_o less_o for_o if_o cd_o be_v of_o gold_n it_o will_v go_v further_o down_o than_o be_v of_o brass_n or_o iron_n and_o if_o cd_o be_v a_o stone_n that_o be_v light_a in_o specie_fw-la than_o brass_n it_o will_v not_o go_v so_o far_o down_o this_o let_v we_o know_v the_o reason_n why_o thick_a black_a and_o heavy_a cloud_n come_v near_o to_o the_o earth_n than_o thin_a white_a and_o light_a we_o see_v ninthly_a that_o the_o pressure_n of_o the_o air_n be_v determinable_a even_o in_o its_o high_o degree_n and_o seem_v to_o be_v the_o same_o in_o all_o place_n of_o the_o world_n but_o the_o pressure_n of_o the_o water_n be_v not_o so_o the_o reason_n of_o the_o first_o part_n be_v because_o the_o element_n of_o air_n seem_v to_o be_v of_o the_o same_o height_n in_o all_o place_n and_o therefore_o we_o may_v know_v its_o outmost_a pressure_n which_o be_v just_o equivalent_a to_o the_o weight_n of_o 28_o or_o 29_o inch_n of_o gold_n or_o mercury_n but_o because_o the_o deepness_n of_o the_o sea_n be_v variable_a therefore_o the_o pressure_n be_v variable_a likewise_o yet_o if_o the_o exact_a deepness_n of_o the_o deep_a place_n be_v know_v it_o be_v as_o easy_a to_o determine_v the_o great_a pressure_n of_o it_o as_o to_o determine_v the_o great_a pressure_n of_o the_o air._n we_o see_v tenthly_a that_o a_o very_a small_a weight_n add_v or_o subtract_v in_o height_n will_v change_v and_o alter_v the_o counterpoise_n of_o a_o fluid_a because_o if_o you_o lay_v but_o one_o ounce_n upon_o the_o top_n of_o the_o brass_n at_o f_o it_o present_o subside_n according_o or_o take_v one_o ounce_n from_o it_o and_o it_o rise_v but_o though_o never_o so_o much_o weight_n be_v add_v to_o it_o or_o subtract_v from_o it_o in_o thickness_n no_o alteration_n follow_v therefore_o though_o this_o piece_n of_o brass_n cd_o that_o be_v now_o but_o 12_o inch_n in_o thickness_n be_v make_v 24_o by_o which_o mean_v the_o weight_n will_v be_v tripled_a and_o more_o yet_o the_o same_o surface_n anb_n will_v sustain_v it_o yet_o add_v to_o it_o in_o altitude_n but_o one_o inch_n and_o present_o it_o sink_v down_o proportionable_o this_o evident_o discover_v the_o reason_n why_o it_o be_v as_o easy_a for_o the_o air_n to_o support_v a_o cylinder_n of_o mercury_n 3_o inch_n thick_a as_o to_o support_v a_o cylinder_n half_o a_o inch_n thick_a and_o why_o it_o can_v support_v more_o in_o height_n than_o 29_o inch_n and_o why_o it_o can_v support_v less_o now_o the_o reason_n why_o a_o thick_a pillar_n be_v as_o easy_o suspend_v as_o