Selected quad for the lemma: cause_n

Word A	Word B	Word C	Word D	Occurrence	Frequency Band	MI	MI Band	Prominent
cause_n	efficient_a	end_n	final_a	2,172	5	9.9792	5	true

Text snippets containing the quad

ID	Title	Author	Corrected Date of Publication (TCP Date of Publication)	STC	Words	Pages
A29007	New experiments physico-mechanical, touching the air; New experiments physico-mechanical, touching the spring of the air, and its effects	Boyle, Robert, 1627-1691.; Sharrock, Robert, 1630-1684.; Boyle, Robert, 1627-1691. Defence of the doctrine touching the spring and weight of the air.; Boyle, Robert, 1627-1691. Examen of Mr. T. Hobbes his Dialogus physicus de naturâ aëris.	1682 (1682)	Wing B4000_PARTIAL; Wing B3942_PARTIAL; ESTC R23366	337,085	461

the_o only_a example_n whereby_o he_o endeavour_v to_o illustrate_v the_o generation_n of_o his_o funiculus_fw-la yet_o i_o presume_v he_o scarce_o expect_v we_o shall_v think_v it_o a_o apposite_a one_o for_o beside_o that_o there_o here_o intervene_v a_o conspicuous_a and_o powerful_a agent_n namely_o a_o actual_a fire_n to_o sever_v and_o agitate_v the_o part_n of_o the_o candle_n and_o beside_o that_o there_o be_v a_o manifest_a waste_n of_o the_o wax_n or_o tallow_n turn_v into_o flame_n beside_o these_o thing_n i_o say_v we_o must_v not_o admit_v that_o the_o fuel_n when_o turn_v into_o a_o flame_n do_v real_o fill_v i_o say_v not_o with_o our_o author_n more_o than_o a_o thousand_o time_n but_o so_o much_o as_o twice_o more_o of_o genuine_a space_n than_o the_o wax_n it_o be_v make_v of_o for_o it_o may_v be_v say_v that_o the_o flame_n be_v little_a or_o nothing_o else_o than_o a_o aggregate_v of_o those_o corpuscle_n which_o before_o lie_v upon_o the_o upper_a superficies_n of_o the_o candle_n and_o by_o the_o violent_a heat_n be_v divide_v into_o minute_a particle_n vehement_o agitate_a and_o bring_v from_o lie_v as_o it_o be_v upon_o a_o flat_a to_o beat_v off_o one_o another_o and_o make_v up_o about_o the_o wiek_n such_o a_o figure_n as_o be_v usual_a in_o the_o flame_n of_o candle_n burn_v in_o the_o free_a air._n nor_o will_v it_o necessary_o follow_v that_o the_o space_n which_o the_o flame_n seem_v to_o take_v up_o shall_v contain_v neither_o air_n nor_o aether_n nor_o any_o thing_n else_o save_o the_o part_n of_o that_o flame_n because_o the_o eye_n can_v discern_v any_o other_o body_n there_o for_o even_o the_o smoke_n ascend_v from_o the_o snuff_n of_o a_o newly-extinguished_a candle_n appear_v a_o dark_a pillar_n which_o to_o the_o eye_n at_o some_o distance_n seem_v to_o consist_v of_o smoke_n when_o as_o yet_o there_o be_v so_o many_o aerial_a and_o other_o invisible_a corpuscle_n mingle_v with_o it_o as_o if_o all_o those_o part_n of_o smoke_n that_o make_v a_o great_a show_n in_o the_o air_n be_v collect_v and_o contiguous_a they_o will_v not_o perhaps_o amount_v to_o the_o bigness_n of_o a_o pin_n head_n as_o may_v appear_v by_o the_o great_a quantity_n of_o stream_n that_o in_o chemical_a vessel_n be_v wont_a to_o go_v to_o the_o make_v up_o of_o one_o drop_n of_o spirit_n and_o therefore_o it_o do_v not_o ill_o fall_v out_o for_o our_o turn_n that_o the_o examiner_n to_o enforce_v his_o former_a example_n allege_v the_o turn_n of_o a_o particle_n of_o quicksilver_n into_o vapour_n by_o put_v fire_n under_o it_o for_o if_o such_o be_v the_o rarefaction_n of_o mercury_n it_o be_v not_o at_o all_o like_a to_o make_v such_o a_o funiculus_fw-la as_o he_o talk_v of_o since_o those_o mercurial_a fume_n appear_v by_o divers_a experiment_n to_o be_v mercury_n divide_v and_o throw_v abroad_o into_o minute_n part_n whereby_o though_o the_o body_n obtain_v more_o of_o surface_n than_o it_o have_v before_o yet_o it_o real_o fill_v no_o more_o of_o true_a and_o genuine_a space_n since_o if_o all_o the_o particular_a little_a space_n fill_v by_o these_o scatter_a corpuscle_n be_v reduce_v into_o one_o as_o the_o corpuscle_n themselves_o often_o be_v in_o chemical_a operation_n they_o will_v amount_v but_o to_o one_o total_a space_n equal_a to_o that_o of_o the_o whole_a mercury_n before_o rarefaction_n but_o these_o objection_n against_o this_o explication_n be_v not_o all_o that_o i_o have_v to_o say_v against_o our_o adversary_n funiculus_fw-la itself_o for_o i_o far_o demand_v how_o the_o funiculus_fw-la come_v by_o such_o hook_n or_o graple-iron_n or_o part_n of_o the_o like_a shape_n to_o take_v fast_o hold_v of_o all_o contiguous_a body_n and_o even_o the_o smooth_a such_o as_o glass_n and_o the_o calm_a surface_n of_o quicksilver_n water_n oil_n and_o other_o fluid_n and_o how_o these_o slender_a and_o invisible_a hook_n can_v only_o in_o the_o terse_a body_n find_v a_o innumerable_a company_n of_o ear_n or_o loop_n to_o take_v hold_v on_o but_o hold_v so_o strong_o that_o they_o be_v able_a not_o alone_o to_o lift_v up_o a_o tall_a cylinder_n of_o that_o very_a ponderous_a metal_n of_o quicksilver_n but_o to_o draw_v inward_o the_o side_n of_o strong_a glass_n so_o forcible_o as_o to_o break_v they_o all_o to_o piece_n and_o it_o be_v also_o somewhat_o strange_a that_o water_n and_o other_o fluid_a body_n who_o part_n be_v wont_a to_o be_v so_o easy_o separable_a shall_v when_o the_o funiculus_fw-la once_o lay_n hold_v on_o the_o superficial_a corpuscle_n present_o emulate_v the_o nature_n of_o consistent_a body_n and_o be_v draw_v up_o like_o mass_n each_o of_o they_o of_o a_o entire_a piece_n though_o even_o in_o the_o exhaust_a receiver_n they_o appear_v by_o their_o undulation_n when_o they_o be_v stir_v by_o bubble_n that_o pass_v free_o through_o they_o and_o many_o other_o sign_n to_o continue_v fluid_a body_n it_o seem_v also_o very_o difficult_a to_o conceive_v how_o this_o extenuate_v substance_n shall_v require_v so_o strong_a a_o spring_n inward_a as_o the_o examiner_n all_o along_o his_o book_n ascribe_v to_o it_o nor_o will_v it_o serve_v his_o turn_n to_o require_v of_o we_o in_o exchange_n a_o explication_n of_o the_o air_n spring_v outward_a since_o he_o acknowledge_v as_o well_o as_o we_o that_o it_o have_v such_o a_o spring_n i_o know_v that_o by_o call_v this_o extenuate_v substance_n a_o funiculus_fw-la he_o seem_v plain_o to_o intimate_v that_o it_o have_v its_o spring_n inward_a upon_o the_o same_o account_n that_o lute-string_n and_o rope_n forcible_o stretch_v have_v they_o but_o there_o be_v no_o small_a disparity_n betwixt_o they_o for_o whereas_o in_o string_n there_o be_v require_v either_o wreathe_a or_o some_o peculiar_a and_o artificial_a texture_n of_o the_o component_a part_n a_o rarefaction_n of_o air_n be_v it_o grant_v do_v not_o include_v or_o infer_v any_o such_o contrivance_n of_o part_n as_o be_v requisite_a to_o make_v body_n elastical_a and_o if_o the_o cartesian_a notion_n of_o the_o cause_n of_o springiness_n be_v admit_v than_o our_o extenuate_v substance_n have_v no_o pore_n to_o be_v pervade_v by_o the_o materia_fw-la subtilis_fw-la to_o which_o beside_o our_o author_n also_o make_v glass_n impervious_a will_v be_v destitute_a of_o springiness_n and_o however_o since_o lute-string_n rope_n etc._n etc._n must_v when_o they_o shrink_v inward_o either_o fill_v up_o or_o lessen_v their_o pore_n and_o increase_v in_o thickness_n as_o they_o diminish_v in_o length_n our_o examiner_n funiculus_fw-la must_v differ_v very_o much_o from_o they_o since_o it_o have_v no_o pore_n to_o receive_v the_o shrink_a part_n and_o contract_v itself_o as_o to_o length_n without_o increase_v its_o thickness_n nor_o can_v it_o well_o be_v pretend_v that_o this_o self_n contraction_n be_v do_v ob_fw-la fugam_fw-la vacui_fw-la since_o though_o it_o shall_v not_o be_v make_v a_o vacuum_n will_v not_o ensue_v and_o if_o it_o be_v say_v that_o it_o be_v make_v that_o the_o preternatural_o stretch_a body_n may_v restore_v itself_o to_o its_o natural_a dimension_n i_o answer_v that_o i_o be_o not_o very_o forward_o to_o allow_v act_v for_o end_n to_o body_n inanimate_a and_o consequent_o devoid_a of_o knowledge_n and_o therefore_o shall_v glad_o see_v some_o unquestionable_a example_n produce_v of_o operation_n of_o that_o nature_n and_o however_o to_o i_o who_o in_o physical_a inquiry_n of_o this_o nature_n look_v for_o efficient_a rather_o than_o final_a cause_n it_o be_v not_o easy_a to_o conceive_v how_o air_n by_o be_v expanded_a in_o which_o case_n its_o force_n like_o that_o of_o other_o rarefy_a body_n seem_v principal_o to_o tend_v outward_o as_o we_o see_v in_o fire_a gunpowder_n in_o aeolipile_n in_o warm_a weather-glass_n etc._n etc._n shall_v acquire_v so_o prodigious_a a_o force_n of_o move_v contiguous_a body_n inward_o nor_o do_v it_o to_o i_o seem_v very_o probable_a that_o when_o for_o instance_n part_n of_o a_o polish_a marble_n be_v extend_v into_o a_o funiculus_fw-la that_o funiculus_fw-la do_v so_o strong_o aspire_v to_o turn_v into_o marble_n again_o i_o may_v likewise_o wish_v our_o author_n have_v more_o clear_o explicate_v how_o it_o come_v to_o pass_v which_o he_o all_o along_o take_v for_o grant_v that_o the_o access_n of_o the_o outward_a air_n do_v so_o much_o and_o so_o sudden_o relax_v the_o tension_n of_o his_o funiculus_fw-la since_o that_o be_v according_a to_o he_o a_o real_a and_o poreless_a body_n it_o be_v not_o so_o obvious_a how_o the_o presence_n of_o another_o can_v so_o easy_o and_o to_o so_o strange_a a_o degree_n make_v it_o shrink_v but_o i_o will_v rather_o observe_v that_o it_o be_v very_o unlikely_a that_o the_o space_n which_o our_o adversary_n will_v have_v replenish_v with_o his_o funicular_a substance_n shall_v be_v full_a of_o little_a

for_o the_o other_o he_o quarrel_v not_o with_o quod_fw-la quidem_fw-la lanx_fw-la say_v he_o in_o qua_fw-la est_fw-la vesica_fw-la magis_fw-la deprimitur_fw-la 15._o quam_fw-la altera_fw-la certi_fw-la esse_fw-la possunt_fw-la oculis_fw-la testibus_fw-la quod_fw-la autem_fw-la id_fw-la à_fw-la gravitate_fw-la aëris_fw-la naturali_fw-la accidit_fw-la certi_fw-la esse_fw-la non_fw-la possunt_fw-la praesertim_fw-la si_fw-la quae_fw-la sit_fw-la gravitatis_fw-la causa_fw-la efficiens_fw-la nesciunt_fw-la but_o i_o know_v not_o who_o mr._n hobbs_n will_v persuade_v that_o a_o man_n can_v be_v sure_o that_o lead_n be_v in_o specie_fw-la heavy_a than_o cork_n unless_o he_o know_v what_o be_v the_o efficient_a cause_n of_o gravity_n and_o mr._n hobbs_n speak_v in_o his_o 30._o chapter_n where_o he_o express_o treat_v of_o that_o subject_a as_o if_o that_o have_v not_o be_v explain_v by_o any_o man_n and_o consequent_o not_o by_o any_o writer_n of_o staticks_n and_o perhaps_o i_o be_o therein_o somewhat_o of_o his_o mind_n and_o yet_o sure_a all_o these_o writer_n treat_v of_o the_o proportion_n of_o heavy_a body_n do_v not_o write_v they_o know_v not_o what_o and_o though_o he_o mention_n his_o own_o hypothesis_n as_o that_o than_o which_o nothing_o be_v more_o likely_a yet_o i_o think_v i_o can_v frame_v objection_n against_o it_o that_o will_v not_o easy_o be_v answer_v if_o my_o present_a task_n require_v it_o or_o if_o i_o find_v his_o opinion_n in_o this_o point_n embrace_v as_o yet_o by_o man_n of_o note_n wherefore_o i_o shall_v now_o say_v no_o more_o of_o it_o than_o he_o himself_o do_v namely_o that_o according_a to_o his_o doctrine_n it_o may_v well_o be_v think_v to_o determine_v for_o it_o be_v a_o certain_a consequent_a that_o heavy_a body_n descend_v with_o less_o and_o less_o velocity_n as_o they_o be_v 4._o more_o and_o more_o remote_a from_o the_o aequator_fw-la and_o that_o at_o the_o pole_n themselves_o they_o will_v either_o not_o descend_v at_o all_o or_o not_o descend_v by_o the_o axis_n which_o whether_o it_o be_v true_a or_o false_a experience_n must_v determine_v which_o till_o it_o have_v do_v in_o his_o favour_n a_o event_n i_o do_v not_o expect_v i_o hope_v he_o will_v allow_v i_o to_o distrust_v his_o hypothesis_n but_o to_o return_v to_o our_o experiment_n the_o account_n he_o give_v why_o the_o bladder_n do_v propend_v for_o so_o he_o love_v to_o speak_v be_v this_o quod_fw-la vesica_fw-la sive_fw-la follibus_fw-la sive_fw-la flatu_fw-la oris_fw-la 16._o distenta_fw-la sit_fw-la gravior_n sit_fw-la quam_fw-la eadem_fw-la vesica_fw-la non_fw-la distenta_fw-la negarenolo_fw-it propter_fw-la majorem_fw-la quantitatem_fw-la atomorum_fw-la follibus_fw-la vel_fw-la corpusculorum_fw-la fuligineorum_fw-la ab_fw-la halitu_fw-la inflatorum_fw-la ab_fw-la experimento_fw-la autem_fw-la quod_fw-la fit_a à_fw-la vesica_fw-la inflata_fw-la nihil_fw-la colligunt_fw-la quod_fw-la sit_fw-la satis_fw-la certum_fw-la oportuit_fw-la lancibus_fw-la imponere_fw-la duo_fw-la vasa_fw-la pondere_fw-la aequalia_fw-la quorum_fw-la alterum_fw-la esset_fw-la accuratè_fw-la clausum_fw-la alterum_fw-la apertum_fw-la sic_fw-la enim_fw-la non_fw-la inflatus_fw-la sed_fw-la inclusus_fw-la tantum_fw-la aër_fw-la ponderatus_fw-la esset_fw-la quando_fw-la igitur_fw-la aërem_fw-la sic_fw-la ponderatum_fw-la videbis_fw-la meditabimur_fw-la postea_fw-la quid_fw-la dicendum_fw-la sit_fw-la de_fw-la phaenomeno_fw-la quod_fw-la retuleris_fw-la but_o as_o to_o the_o first_o part_n of_o this_o passage_n it_o do_v not_o deny_v the_o gravity_n of_o what_o we_o call_v the_o air_n but_o only_a endeavour_n to_o show_v what_o part_v they_o be_v that_o make_v it_o heavy_a and_o as_o to_o the_o second_o he_o seem_v to_o mistake_v the_o present_a case_n for_o there_o be_v no_o need_n that_o the_o air_n in_o the_o bladder_n be_v before_o the_o exhaustion_n of_o the_o receiver_n in_o which_o the_o forego_n fifteen_o page_n declare_v he_o suppose_n the_o experiment_n to_o be_v make_v heavy_a than_o the_o outward_a air._n wherefore_o when_o he_o subjoin_v that_o from_o this_o experiment_n we_o collect_v nothing_o quoth_v sit_v satis_fw-la certum_fw-la the_o affirmation_n be_v not_o a_o inference_n but_o precarious_a and_o as_o for_o the_o annex_v way_n whereby_o he_o will_v wish_v to_o have_v a_o experiment_n make_v fit_a to_o infer_v the_o gravity_n of_o the_o air_n if_o he_o have_v not_o overlooked_a what_o i_o have_v deliver_v in_o the_o begin_n of_o the_o 36._o experiment_n he_o will_v easy_o have_v perceive_v that_o we_o do_v make_v a_o trial_n much_o of_o the_o same_o nature_n with_o that_o he_o desire_v for_o we_o weigh_v in_o our_o receiver_n the_o air_n in_o a_o glass_n hermetical_o seal_v wherein_o it_o be_v not_o to_o use_v his_o expression_n inflate_v but_o only_o include_v this_o be_v what_o he_o here_o object_n against_o the_o gravity_n of_o the_o air_n in_o the_o other_o place_n pag._n 8._o &_o 9_o where_o he_o say_v something_o to_o this_o controversy_n he_o inculcate_n also_o that_o we_o shall_v first_o explicate_v what_o be_v gravity_n and_o then_o add_v quod_fw-la atmosphaerae_fw-la insunt_fw-la permistae_fw-la corpori_fw-la aethereo_fw-la multae_fw-la tum_fw-la aquae_fw-la tum_fw-la etiam_fw-la terrae_fw-la particulae_fw-la facile_fw-la persuadeor_fw-la 9_o sed_fw-la quod_fw-la in_o medio_fw-la aethere_fw-la sursum_fw-la deorsum_fw-la quaquaversum_fw-la motae_fw-la nec_fw-la semper_fw-la alterae_fw-la alteris_fw-la innitentes_fw-la gravitent_a inconceptibile_fw-la est_fw-la to_o which_o he_o add_v two_o or_o three_o reflection_n who_o examen_fw-la be_v here_o unnecessary_a will_v require_v more_o time_n than_o perhaps_o it_o will_v in_o reference_n to_o the_o present_a controversy_n deserve_v for_o we_o be_v now_o inquire_v not_o how_o the_o air_n come_v to_o gravitate_fw-la but_o whether_o or_o no_o it_o have_v gravity_n and_o since_o in_o his_o element_n of_o philosophy_n he_o grant_v and_o give_v 10._o his_o reason_n for_o it_o that_o if_o air_n be_v blow_v into_o a_o hollow_a cylinder_n or_o into_o a_o bladder_n it_o will_v increase_v the_o weight_n of_o either_o of_o they_o a_o little_a and_o since_o here_o he_o likewise_o confess_v as_o we_o have_v just_a now_o see_v that_o there_o be_v mingle_v with_o the_o aether_n many_o aqueous_a and_o earthly_a and_o consequent_o heavy_a particle_n he_o confess_v that_o which_o we_o labour_v to_o evince_v namely_o that_o the_o air_n be_v not_o devoid_a of_o weight_n and_o it_o concern_v we_o no_o more_o than_o himself_o to_o show_v how_o the_o corpuscle_n upon_o who_o account_n the_o air_n be_v heavy_a make_v it_o so_o and_o this_o be_v what_o mr._n hobbs_n in_o several_a place_n think_v fit_a to_o object_v against_o the_o gravity_n of_o the_o air_n the_o reader_n will_v i_o suppose_v easy_o take_v notice_n that_o he_o have_v leave_v the_o experiment_n of_o the_o aeolipile_n and_o some_o other_o unanswered_a though_o these_o alone_o prove_v that_o the_o air_n be_v a_o manifest_a weight_n even_o when_o it_o be_v not_o compress_v but_o retain_v its_o laxity_n have_v say_v thus_o much_o to_o evince_v against_o mr._n hobbs_n the_o gravity_n of_o the_o air_n let_v we_o now_o examine_v whether_o it_o have_v not_o also_o a_o spring_n in_o the_o sense_n we_o take_v that_o word_n in_o this_o though_o mr._n hobbs_n be_v please_v 21._o to_o call_v as_o he_o also_o do_v the_o weight_n of_o the_o air_n a_o dream_n yet_o he_o do_v himself_o grant_v in_o effect_n as_o much_o as_o be_v requisite_a to_o prove_v the_o spring_n of_o the_o air_n in_o the_o sense_n i_o contend_v for_o it_o for_o take_v upon_o he_o to_o give_v account_n how_o good_a a_o one_o we_o shall_v see_v anon_o of_o that_o know_a experiment_n wherein_o the_o air_n be_v compress_v in_o a_o glass_n bottle_n by_o the_o forcible_a injection_n of_o water_n which_o water_n when_o the_o glass_n be_v unstope_v the_o air_n do_v again_o throw_v out_o in_o recover_v its_o former_a dimension_n of_o this_o experiment_n i_o say_v he_o give_v this_o account_n pag._n 24._o aër_fw-la quo_fw-la ab_fw-la initio_fw-la sphaera_fw-la plenus_fw-la erat_fw-la à_fw-la corpusculis_fw-la illis_fw-la terreis_fw-la motus_fw-la motu_fw-la circulari_fw-la simplice_fw-la vi_fw-la injectionis_fw-la coactus_fw-la qui_fw-la quidem_fw-la purus_fw-la est_fw-la exit_fw-la aquam_fw-la injectam_fw-la penetrans_fw-la in_fw-la aërem_fw-la extrinsecum_fw-la locum_fw-la relinquens_fw-la aquae_fw-la sequitur_fw-la ergo_fw-la corpusculis_fw-la illis_fw-la terreis_fw-la minus_fw-la relinqui_fw-la loci_fw-la in_o quo_fw-la motum_fw-la suum_fw-la naturalen_v exercere_fw-la possint_fw-la itaque_fw-la in_o se_fw-la mutuo_fw-la impingentes_fw-la aquam_fw-la urgent_a ad_fw-la egressum_fw-la egredientem_fw-la aër_fw-la externus_fw-la quia_fw-la universum_fw-la supponitur_fw-la esse_fw-la plenum_fw-la penetrate_v locumque_fw-la egredientis_fw-la aëris_fw-la successiuè_fw-la occupo_fw-la donec_fw-la corpuscula_fw-la quantitate_fw-la aëris_fw-la eadem_fw-la restituta_fw-la libertatem_fw-la motui_fw-la svo_fw-la naturalem_fw-la recipiant_fw-la but_o how_o little_a this_o come_v short_a of_o grant_v as_o much_o spring_n to_o the_o air_n as_o the_o cartesian_o do_v and_o as_o i_o need_v require_v may_v easy_o be_v judge_v by_o divers_a passage_n in_o our_o book_n and_o particular_o by_o

find_v out_o of_o the_o invisible_a cause_n of_o natural_a thing_n all_o will_v be_v in_o vain_a p._n 15._o cum_fw-la ejus_fw-la etc._n etc._n see_v almost_o all_o its_o part_n be_v flexil_n like_o little_a soft_a feather_n to_o fine_a thread_n ibid._n sed_fw-la quisquis_fw-la etc._n etc._n but_o it_o matter_n not_o who_o be_v the_o author_n of_o that_o supposition_n for_o the_o very_a hypothesis_n itself_o wherein_o be_v suppose_v a_o motion_n of_o subtle_a matter_n which_o be_v swift_a without_o any_o cause_n assign_v and_o have_v moreover_o divers_a innumerable_a circulation_n of_o corpuscle_n generate_v from_o the_o single_a motion_n of_o that_o matter_n be_v not_o the_o conceit_n of_o a_o man_n of_o wit_n or_o sense_n p._n 16._o nempe_fw-la hoc_fw-la etc._n etc._n this_o be_v the_o thing_n that_o the_o great_a des-cartes_n somewhere_o admire_v that_o he_o whether_o his_o position_n be_v true_a or_o false_a do_v never_o in_o argumentation_n make_v any_o right_a inference_n from_o his_o supposition_n p._n 17._o quod_fw-la sane_fw-la etc._n etc._n which_o be_v indeed_o a_o most_o evident_a argument_n of_o the_o weight_n of_o the_o air._n ibid._n quod_fw-la quidem_fw-la lanx_fw-la etc._n etc._n that_o the_o scale_n in_o which_o the_o bladder_n be_v be_v more_o depress_v than_o the_o other_o they_o may_v be_v certain_a their_o eye_n bear_v they_o witness_n but_o that_o this_o come_v from_o the_o natural_a gravity_n of_o the_o air_n he_o can_v be_v assure_v especial_o if_o they_o be_v ignorant_a what_o be_v the_o efficient_a cause_n of_o gravity_n p._n 18._o quod_fw-la vesica_fw-la etc._n etc._n that_o the_o bladder_n whether_o it_o be_v blow_v up_o with_o a_o pair_n of_o bellows_o or_o with_o the_o breath_n of_o one_o mouth_n be_v heavy_a than_o when_o it_o be_v not_o blow_v up_o i_o will_v not_o deny_v because_o of_o the_o great_a quantity_n of_o atom_n from_o the_o bellows_o or_o of_o fuliginous_a corpuseles_o that_o be_v blow_v in_o from_o the_o breath_n but_o notwithstanding_o they_o gather_v nothing_o of_o sufficient_a certainty_n from_o this_o experiment_n of_o a_o blow_a bladder_n they_o ought_v to_o have_v put_v into_o the_o scale_n two_o vessel_n of_o equal_a weight_n whereof_o one_o shall_v be_v shut_v and_o the_o other_o open_a for_o by_o this_o mean_v air_n not_o blow_v in_o but_o only_o enclose_v have_v be_v weigh_v when_o therefore_o you_o shall_v see_v air_n so_o weigh_v we_o will_v afterward_o consider_v what_o may_v be_v say_v concern_v the_o phaenomenon_n you_o bring_v p._n 19_o quod_fw-la atmosphaerae_fw-la etc._n etc._n that_o many_o particle_n both_o of_o earth_n and_o water_n mingle_v with_o the_o aethereal_a body_n be_v in_o the_o atmosphere_n i_o be_o easy_o persuade_v but_o that_o in_o the_o middle_n of_o the_o aether_n they_o shall_v move_v upward_o downward_o every_o way_n and_o that_o one_o lean_v on_o the_o back_n of_o another_o they_o shall_v not_o gravitate_fw-la be_v a_o thing_n utter_o unconceivable_a p._n 20._o aer_fw-la quo_fw-la etc._n etc._n the_o air_n with_o which_o in_o the_o begin_n the_o spherical_a glass_n be_v full_a be_v move_v by_o those_o earthy_a corpuscle_n in_o a_o simple_a circular_a motion_n and_o be_v compress_v by_o the_o force_n of_o the_o injection_n that_o of_o it_o which_o be_v pure_a penetrate_v the_o injected_a water_n get_v out_o into_o the_o open_a air_n and_o give_v place_n to_o the_o water_n it_o follow_v therefore_o that_o those_o earthy_a corpuscle_n have_v less_o place_n leave_v in_o which_o they_o can_v exercise_v their_o natural_a motion_n therefore_o beat_v one_o upon_o another_o they_o force_v the_o water_n to_o go_v out_o it_o thus_o go_v out_o the_o external_a air_n because_o the_o universe_n be_v suppose_v to_o be_v full_a penetrate_v it_o and_o successive_o take_v up_o the_o place_n of_o the_o air_n that_o go_v out_o until_o the_o corpuscle_n the_o same_o quantity_n of_o air_n be_v restore_v regain_v a_o liberty_n natural_a to_o their_o motion_n p._n 21._o quoniam_fw-la per_fw-la etc._n etc._n because_o by_o the_o draw_v back_o of_o the_o sucker_n the_o pure_a air_n be_v thrust_v in_o but_o the_o earthy_a part_n be_v not_o thrust_v in_o there_o be_v a_o great_a proportion_n of_o earthy_a particle_n which_o without_o the_o cylinder_n be_v near_o the_o sucker_n unto_o the_o pure_a air_n in_o which_o they_o exercise_v their_o motion_n as_o well_o after_o this_o revulsion_n as_o before_o wherefore_o these_o particle_n so_o move_v have_v less_o place_n to_o exercise_v their_o natural_a motion_n in_o some_o of_o they_o fall_v foul_a and_o beat_v upon_o the_o rest_n so_o that_o of_o necessity_n the_o particle_n that_o be_v near_o the_o surface_n of_o the_o sucker_n must_v drive_v it_o upward_o ibid._n vidisti_fw-la etc._n etc._n you_o see_v now_o that_o the_o spring_n of_o the_o air_n which_o they_o fuppose_v be_v either_o a_o impossible_a thing_n or_o they_o must_v for_o its_o defence_n have_v recourse_n to_o the_o hypothesis_n of_o mr._n hobbs_n p._n 23._o quia_fw-la cuticula_fw-la omnis_fw-la etc._n etc._n because_o every_o skin_n be_v make_v up_o of_o small_a thread_n or_o filament_n which_o by_o reason_n of_o their_o figure_n can_v accurate_o touch_v in_o all_o point_n the_o bladder_n therefore_o be_v a_o skin_n must_v be_v pervious_a not_o only_o to_o air_n but_o to_o water_n also_o as_o to_o sweat_v therefore_o of_o the_o air_n beat_v in_o by_o force_n there_o be_v the_o same_o compression_n within_o the_o bladder_n that_o there_o be_v without_o the_o endeavour_n of_o which_o the_o way_n of_o its_o motion_n be_v every_o way_n cross_v tend_v every_o way_n to_o the_o concave_a superficies_n of_o the_o bladder_n wherefore_o it_o be_v of_o necessity_n that_o it_o must_v swell_v every_o way_n and_o the_o vehemency_n of_o the_o endeavour_n increase_v be_v tear_v at_o last_o p._n 26._o intellexti_fw-la etc._n etc._n have_v you_o understand_v my_o hypothesis_n 1._o that_o there_o be_v with_o the_o air_n intersper_v many_o earthy_a particle_n endue_v with_o a_o simple_a circular_a motion_n congenite_fw-la to_o its_o nature_n 2._o that_o there_o be_v a_o great_a quantity_n of_o these_o particle_n in_o the_o air_n that_o be_v near_o the_o earth_n than_o in_o that_o which_o be_v more_o remote_a from_o it_o p._n 27._o neque_fw-la est_fw-la etc._n etc._n nor_o be_v there_o any_o one_o that_o hitherto_o have_v bring_v any_o reason_n why_o it_o may_v not_o be_v so_o p._n 29._o nihil_fw-la etc._n etc._n nothing_o be_v move_v but_o by_o a_o contiguous_a body_n that_o be_v in_o motion_n ibid._n dum_fw-la suctor_n etc._n etc._n while_o the_o sucker_n be_v draw_v back_o by_o how_o much_o a_o great_a place_n be_v leave_v within_o by_o so_o much_o a_o lesser_a place_n be_v leave_v to_o the_o external_a air_n which_o be_v thrust_v backward_o by_o the_o motion_n of_o the_o sucker_n towards_o the_o outmost_a part_n do_v move_v in_o like_a manner_n the_o air_n that_o be_v next_o itself_o and_o that_o air_n the_o next_o and_o so_o forward_o so_o that_o it_o be_v of_o necessity_n at_o last_o that_o the_o air_n must_v be_v compel_v into_o the_o space_n desert_v by_o the_o sucker_n and_o to_o enter_v between_o the_o convex_a and_o surface_n of_o the_o sucker_n and_o the_o concave_n of_o the_o cylinder_n for_o it_o be_v suppose_v that_o the_o part_n of_o the_o air_n be_v infinite_o subtle_a it_o be_v impossible_a but_o they_o shall_v insinuate_v themselves_o that_o way_n by_o which_o the_o sucker_n be_v draw_v down_o for_o first_o the_o contact_n of_o those_o surface_n can_v be_v perfect_a in_o all_o point_n because_o the_o surface_v themselves_o can_v be_v make_v infinite_o smooth_a then_o that_o force_n which_o be_v apply_v to_o draw_v back_o the_o sucker_n do_v distend_v in_o some_o measure_n the_o cavity_n of_o the_o cylinder_n last_o if_o in_o the_o confine_n of_o that_o be_v betwixt_o the_o two_o surface_n any_o one_o single_a hard_a atom_n shall_v enter_v pure_a air_n will_v enter_v at_o the_o same_o way_n although_o with_o a_o weak_a endeavour_n i_o may_v also_o have_v account_v that_o air_n which_o for_o the_o same_o cause_n insinuate_v itself_o through_o the_o valve_n of_o the_o cylinder_n you_o see_v therefore_o the_o consequence_n from_o the_o retraction_n of_o the_o sucker_n to_o the_o be_v of_o a_o empty_a place_n be_v take_v away_o it_o will_v follow_v also_o that_o the_o air_n which_o be_v drive_v up_o into_o the_o place_n desert_v by_o the_o sucker_n because_o it_o be_v drive_v up_o thither_o by_o a_o great_a force_n be_v move_v with_o a_o very_a swift_a and_o circular_a motion_n betwixt_o the_o top_n and_o the_o bottom_n in_o the_o cylinder_n because_o there_o be_v nothing_o there_o that_o can_v weaken_v its_o motion_n and_o you_o know_v that_o there_o be_v nothing_o that_o can_v give_v motion_n to_o its_o own_o self_n or_o diminish_v it_o p._n 39_o haerent_fw-la hic_fw-la etc._n