i_o that_o the_o moon_n be_v a_o globe_n of_o water_n as_o he_o can_v never_o prove_v it_o so_o i_o can_v never_o disprove_v it_o unless_o i_o have_v such_o media_n of_o access_n to_o that_o body_n that_o can_v to_o my_o sense_n and_o experience_n confute_v it_o and_o therefore_o in_o such_o case_n the_o proof_n must_v be_v cast_v upon_o the_o assertor_n yet_o there_o seem_v to_o be_v some_o thing_n that_o render_v this_o supposition_n not_o very_o credible_a 1._o that_o it_o seem_v a_o unnecessary_a multiplication_n of_o being_n who_o office_n be_v well_o enough_o supply_v without_o they_o namely_o by_o the_o energy_n of_o the_o glorious_a god_n and_o those_o special_a active_a principle_n that_o he_o have_v lodge_v in_o almost_o all_o create_a nature_n and_o those_o institution_n and_o law_n that_o he_o have_v alligate_v and_o annex_v to_o the_o particular_a work_n of_o his_o creation_n and_o the_o systeme_n and_o syntax_n of_o the_o world_n 2._o but_o principal_o upon_o a_o strict_a examination_n it_o will_v appear_v that_o most_o of_o these_o phaenomena_n in_o nature_n and_o motion_n be_v perform_v by_o the_o active_a principle_n reside_v in_o particular_a subject_n or_o by_o the_o usual_a and_o necessary_a mechanism_n of_o body_n without_o our_o call_n to_o their_o immediate_a performance_n this_o suppose_a spirit_n of_o nature_n 3._o again_o it_o be_v very_o difficult_a to_o form_v to_o ourselves_o a_o notion_n of_o this_o spirit_n nature_n that_o may_v have_v any_o probable_a certainty_n let_v we_o take_v but_o these_o few_o difficulty_n 1._o be_v it_o a_o distinct_a self-subsisting_a spirit_n separate_v from_o matter_n or_o be_v it_o a_o kind_n of_o common_a soul_n or_o form_n reside_v in_o the_o universe_n as_o the_o soul_n of_o a_o brute_n reside_v in_o his_o body_n and_o unite_v to_o it_o by_o a_o wonderful_a union_n if_o it_o be_v the_o former_a it_o be_v a_o kind_n of_o angelic_a nature_n not_o unite_v to_o matter_n but_o act_v separately_z upon_o it_o subsist_v without_o it_o and_o be_v in_o all_o probability_n a_o intelligence_n if_o the_o latter_a it_o be_v fit_a to_o know_v whether_o it_o be_v a_o immaterial_a form_n as_o the_o humane_a soul_n and_o then_o perchance_o we_o shall_v give_v it_o too_o great_a a_o preference_n or_o be_v it_o a_o material_a form_n as_o that_o of_o brute_n and_o then_o it_o will_v be_v worth_a know_v whether_o it_o have_v the_o like_a perfection_n of_o sense_n or_o be_v of_o a_o low_a allay_n and_o only_o vital_a like_o those_o of_o vegetable_n or_o be_v it_o a_o kind_n of_o connatural_a sense_n suit_v to_o all_o material_a being_n together_o with_o a_o sentient_a perception_n and_o appetite_n proportionate_a to_o the_o nature_n of_o every_o material_a or_o substantial_a create_v be_v as_o campanella_n and_o our_o learned_a countryman_n have_v late_o assert_v whatever_o it_o be_v we_o be_v perfect_o in_o the_o dark_a to_o form_v any_o conception_n of_o it_o with_o any_o tolerable_a evidence_n or_o satisfaction_n again_o 2._o be_v there_o other_o particular_a or_o specifical_a form_n in_o the_o several_a class_n of_o material_a existence_n as_o animal_n vegetable_n mineral_n etc._n etc._n that_o exert_v the_o several_a operation_n that_o seem_v specifical_a to_o their_o nature_n but_o individuate_v in_o the_o several_a individual_a existence_n or_o be_v this_o common_a spirit_n of_o nature_n that_o which_o exert_v all_o these_o operation_n which_o be_v therefore_o only_o diversify_v by_o the_o diversification_n of_o the_o composition_n of_o those_o body_n in_o which_o and_o through_o which_o they_o be_v exert_v as_o the_o common_a bellows_o in_o the_o organ_n and_o the_o breath_n thereof_o give_v the_o various_a sound_n in_o the_o organ-pipe_n according_a to_o their_o figure_n stop_v or_o amplitude_n if_o we_o suppose_v the_o former_a we_o seem_v to_o multiply_v entity_n without_o necessity_n if_o the_o latter_a we_o destroy_v all_o that_o we_o be_v building_n and_o make_v all_o the_o animal_n and_o vegetable_n and_o material_a being_n in_o the_o universe_n if_o this_o spirit_n be_v universal_a or_o in_o this_o low_a world_n if_o single_o belong_v to_o this_o systeme_n to_o be_v nothing_o else_o but_o pure_a mechanical_a piece_n without_o any_o sentient_a or_o vital_a principle_n of_o their_o own_o but_o only_o be_v the_o dead_a tool_n and_o instrument_n of_o this_o spirit_n of_o nature_n such_o difficulty_n as_o these_o will_v be_v clear_v to_o give_v we_o some_o idea_n or_o probable_a fix_a notion_n of_o this_o spirit_n of_o nature_n or_o hylarchical_a principle_n but_o now_o if_o we_o shall_v suppose_v the_o interposition_n of_o this_o common_a spirit_n of_o nature_n in_o some_o phaenomena_n or_o motion_n of_o particular_a body_n yet_o it_o seem_v necessary_a for_o we_o to_o suppose_v these_o two_o thing_n in_o the_o exertion_n thereof_o 1._o that_o it_o do_v not_o immediate_o interpose_v unless_o upon_o great_a emergency_n and_o to_o deliver_v the_o thing_n of_o nature_n from_o some_o important_a inconvenience_n which_o without_o so_o effectual_a a_o interposition_n will_v befall_v they_o as_o to_o preserve_v the_o continuity_n of_o the_o part_n of_o the_o universe_n or_o avoid_v vacuity_n and_o the_o like_a and_o not_o upon_o those_o little_a occasion_n which_o be_v of_o no_o consideration_n and_o importance_n whether_o they_o be_v relieve_v or_o supply_v or_o not_o such_o as_o be_v the_o emergency_n of_o a_o rundle_n of_o light_a wood_n from_o the_o bottom_n of_o the_o water_n or_o the_o sustain_n of_o a_o weight_n or_o attraction_n by_o the_o embolus_fw-la of_o a_o syringe_n or_o air-pump_n or_o the_o keep_n up_o of_o the_o valve_n or_o operculum_fw-la in_o the_o low_a end_n of_o a_o tube_n immerse_v in_o water_n these_o and_o the_o like_a instance_n be_v of_o so_o small_a concernment_n to_o the_o good_a of_o the_o universe_n or_o to_o the_o nature_n of_o physical_a body_n that_o they_o be_v scarce_o worthy_a the_o access_n of_o the_o noble_a spirit_n of_o nature_n nodi_fw-la vix_fw-la tali_fw-la vindice_fw-la digni_fw-la 2._o that_o if_o this_o spirit_n of_o nature_n do_v at_o any_o time_n interpose_v yet_o it_o rare_o if_o at_o all_o act_n by_o violent_a or_o convulsive_a motion_n but_o pacate_o and_o as_o much_o as_o may_v be_v in_o consonance_n to_o the_o regular_a disposition_n of_o body_n and_o therefore_o it_o be_v that_o even_o in_o animal_n where_o their_o motion_n be_v exert_v by_o a_o clear_a internal_a vital_a sentient_a principle_n it_o do_v for_o the_o most_o part_n act_v regular_o and_o in_o the_o best_a mechanism_n imaginable_a their_o body_n nerve_n bone_n muscle_n be_v order_v by_o a_o rare_a and_o excellent_a mechanism_n for_o the_o exerting_fw-mi of_o those_o motion_n and_o the_o motion_n themselves_o perform_v by_o those_o organ_n by_o the_o explosion_n and_o retraction_n of_o the_o spirit_n in_o their_o several_a vessel_n with_o admirable_a order_n and_o artifice_n as_o will_v appear_v to_o any_o that_o will_v bestow_v the_o pain_n to_o read_v galen_n de_fw-fr usu_fw-la partium_fw-la and_o aristotle_n de_fw-fr gressu_fw-la animalium_fw-la and_o therefore_o we_o have_v much_o more_o reason_n to_o think_v that_o this_o suppose_a noble_a spirit_n the_o spirit_n of_o nature_n act_v not_o at_o random_n or_o convulsive_o or_o irregular_o but_o according_a to_o the_o best_a rule_n and_o mechanical_a method_n applicable_a to_o such_o motion_n as_o it_o do_v occasional_o exert_v so_o that_o if_o we_o shall_v never_o so_o much_o allow_v of_o the_o spirit_n of_o nature_n and_o its_o interposition_n yet_o still_o the_o necessary_a instrument_n mode_n and_o method_n of_o its_o motion_n according_a to_o mechanical_a rule_n must_v still_o be_v seek_v after_o for_o it_o will_v be_v a_o pitiful_a refuge_n for_o a_o man_n pretend_v to_o philosophy_n to_o give_v this_o general_a solution_n to_o all_o phaenomena_n of_o nature_n that_o this_o be_v so_o because_o the_o spirit_n of_o nature_n thus_o order_v it_o without_o give_v some_o probable_a account_n of_o the_o particular_a mean_n or_o method_n by_o which_o the_o spirit_n of_o nature_n effect_n it_o and_o likewise_o of_o the_o end_n use_v and_o design_n of_o the_o spirit_n of_o nature_n in_o what_o it_o thus_o effect_n chap._n iu._n touch_v rarefaction_n and_o condensation_n and_o their_o kind_n because_o much_o have_v be_v say_v by_o other_o touch_v rarity_n and_o density_n of_o physical_a body_n which_o i_o call_v affection_n passion_n or_o quality_n of_o physical_a body_n and_o it_o may_v be_v conducible_a to_o the_o solution_n of_o many_o physical_a phaenomena_n and_o to_o the_o clear_n of_o my_o apprehension_n concern_v it_o and_o to_o the_o answer_v of_o most_o of_o the_o objection_n of_o any_o weight_n make_v against_o the_o supposition_n which_o i_o have_v state_v in_o the_o two_o pamphlet_n above_o mention_v i_o will_v endeavour_v to_o give_v that_o account_n concern_v this_o matter_n that_o
create_v being_n that_o by_o the_o powerful_a and_o sovereign_a institution_n of_o almighty_a god_n have_v a_o immediate_a principle_n of_o motion_n in_o and_o from_o themselves_o be_v beyond_o dispute_n a_o brute_n beast_n possible_o may_v be_v put_v immediate_o into_o motion_n by_o his_o appetite_n and_o that_o appetite_n excite_v by_o the_o presence_n of_o a_o object_n and_o here_o the_o object_n have_v as_o i_o may_v call_v it_o a_o moral_a principle_n of_o motion_n exciting_a the_o appetite_n move_v the_o brute_n to_o a_o near_a approach_n to_o the_o object_n but_o then_o in_o the_o gressus_fw-la brutalis_fw-la it_o be_v somewhat_o within_o he_o that_o give_v the_o local_a motion_n itself_o namely_o the_o brutalis_fw-la anima_fw-la and_o the_o same_o be_v evident_a in_o the_o motion_n of_o augmentation_n and_o conformation_n of_o vegetable_n the_o motion_n of_o ascent_n and_o calefaction_n in_o fire_n the_o motion_n of_o attraction_n and_o aversation_n in_o magnetical_a body_n and_o the_o very_a motion_n of_o descent_n in_o heavy_a body_n and_o infinite_a more_o instance_n of_o physical_a body_n which_o have_v a_o intrinsic_a principle_n of_o exciting_a and_o communicate_v motion_n to_o the_o subject_n of_o their_o inexistence_n and_o to_o other_o thing_n now_o touch_v this_o internal_a immediate_a principle_n of_o motion_n be_v this_o enquiry_n upon_o which_o i_o be_o chap._n ii_o a_o far_a disquisition_n touch_v the_o immediate_a cause_n of_o motion_n in_o the_o former_a chapter_n i_o have_v suppose_v these_o two_o thing_n 1._o that_o there_o be_v some_o thing_n that_o have_v a_o active_a self-moving_a principle_n lodge_v within_o they_o 2._o that_o matter_n simple_o consider_v be_v not_o that_o immediate_a self-moving_a principle_n it_o remain_v therefore_o to_o be_v inquire_v what_o that_o principle_n be_v the_o ancient_a bi-partition_n of_o create_a being_n be_v into_o substance_n and_o accident_n but_o this_o seem_v to_o i_o to_o be_v too_o narrow_a i_o be_o still_o speak_v of_o create_a material_a existence_n and_o i_o shall_v not_o be_v ashamed_a to_o own_o helmont_n for_o my_o instructor_n herein_o because_o he_o speak_v with_o great_a evidence_n of_o reason_n there_o seem_v therefore_o to_o be_v a_o three_o kind_n of_o existence_n or_o entity_n participate_v in_o some_o respect_n of_o the_o nature_n of_o both_o and_o yet_o differ_v in_o other_o respect_n from_o both_o for_o indeed_o it_o be_v a_o entity_n among_o create_a being_n belong_v to_o matter_n far_o more_o noble_a than_o either_o of_o the_o two_o former_a and_o be_v that_o which_o give_v life_n vigour_n activity_n and_o motion_n immediate_o next_o under_o the_o lord_n of_o nature_n to_o every_o self-moving_a be_v and_o this_o entity_n i_o call_v vis_fw-fr or_o virtus_fw-la activa_fw-la superad_v to_o matter_n and_o give_v immediate_o those_o motion_n to_o it_o that_o be_v specifical_o appropriate_a to_o that_o vis_fw-fr or_o virtus_fw-la activa_fw-la and_o without_o which_o matter_n will_v be_v stupid_a dull_a unactive_a and_o always_o at_o rest_n in_o itself_o unless_o accidental_o move_v ab_fw-la extrinseco_fw-la and_o although_o those_o vires_fw-la or_o virtutes_fw-la activae_fw-la the_o immediate_a principle_n of_o motion_n in_o such_o thing_n as_o be_v automata_n be_v various_a and_o infinite_o diversify_v yet_o i_o shall_v instance_n but_o in_o few_o which_o nevertheless_o will_v be_v sufficient_a to_o render_v myself_o intelligible_a in_o what_o i_o say_v and_o those_o be_v principal_o of_o two_o sort_n the_o first_o of_o those_o the_o noble_a below_o the_o humane_a soul_n be_v those_o vires_fw-la or_o virtutes_fw-la essentiales_fw-la that_o be_v the_o principal_a constituent_n of_o vital_a or_o substantial_a form_n the_o second_o be_v those_o which_o be_v usual_o call_v active_a quality_n which_o seem_v to_o be_v of_o a_o low_a nature_n and_o allay_v than_o the_o former_a under_o the_o first_o of_o these_o rank_n there_o be_v different_a class_n not_o only_o gradual_o but_o essential_o more_o or_o less_o perfect_a than_o other_o viz._n first_o the_o vis_fw-fr sentiens_fw-la &_o animalis_fw-la of_o animal_n 2._o the_o vis_fw-fr vegetans_fw-la &_o vitalis_fw-la of_o vegetable_n and_o possible_o of_o many_o mineral_n 3._o the_o vis_fw-fr combustiva_fw-la &_o calefactiva_fw-la of_o fire_n 4._o the_o vis_fw-fr attractiva_fw-la directiva_fw-la &_o communicativa_fw-la of_o magnetical_a body_n these_o virtutes_fw-la or_o vires_fw-la essentiales_fw-la even_o of_o the_o noble_a sort_n i_o mean_v below_o the_o humane_a nature_n have_v this_o pre-eminence_n above_o the_o matter_n or_o substance_n whereunto_o they_o be_v unite_v that_o they_o be_v the_o immediate_a vital_a movent_fw-la principle_n that_o give_v a_o kind_n of_o life_n or_o motion_n to_o the_o subject_a wherein_o they_o exist_v which_o will_v otherwise_o be_v destitute_a of_o life_n or_o motion_n from_o itself_o whether_o these_o vires_fw-la or_o virtutes_fw-la essentiales_fw-la be_v in_o themselves_o defectible_a or_o not_o may_v be_v question_v some_o have_v think_v that_o they_o have_v certain_a termini_fw-la temporales_fw-la of_o their_o existence_n and_o operation_n in_o themselves_o simple_o and_o abstractive_o consider_v and_o in_o process_n of_o time_n languish_v and_o final_o expire_v and_o cease_v as_o the_o energy_n of_o the_o spring_n of_o a_o watch_n in_o its_o evolution_n grow_v languid_a and_o at_o last_o utter_o cease_v from_o any_o far_a evolution_n or_o motion_n other_o have_v think_v and_o with_o great_a evidence_n of_o reason_n that_o there_o be_v no_o decay_n or_o natural_a termination_n of_o the_o vis_fw-fr or_o energia_fw-la essentialis_fw-la itself_o but_o only_o by_o the_o decay_n or_o defectibility_n or_o dissolution_n of_o the_o material_a hypostasis_fw-la to_o which_o it_o be_v unite_v or_o of_o the_o organ_n which_o it_o use_v in_o its_o operation_n which_o be_v compound_v body_n be_v subject_a to_o decay_v and_o dissolution_n and_o therefore_o the_o philosopher_n tell_v we_o that_o if_o a_o old_a man_n have_v a_o young_a man_n eye_n he_o will_v see_v as_o well_o as_o in_o his_o youth_n for_o the_o decay_n be_v not_o in_o the_o visive_n faculty_n or_o vis_fw-fr or_o virtus_fw-la essentialis_fw-la sentiens_fw-la but_o in_o the_o organ_n or_o subject_a or_o substratum_fw-la of_o its_o operation_n or_o inexistence_n but_o in_o some_o respect_n it_o be_v inferior_a to_o matter_n and_o seem_v to_o participate_v of_o the_o nature_n of_o accident_n as_o for_o instance_n it_o necessary_o according_a to_o the_o common_a law_n of_o nature_n require_v a_o material_a hypostasis_fw-la or_o subject_a in_o which_o it_o may_v inexi_v and_o to_o which_o it_o may_v be_v unite_v thus_o the_o vis_fw-fr sentiens_fw-la &_o animalis_fw-la be_v immediate_o unite_v to_o the_o animal_n spirit_n or_o the_o most_o refine_a part_n of_o the_o animal_n nature_n the_o vis_fw-fr vegetans_fw-la vitalis_n of_o vegetable_n be_v immediate_o unite_v to_o the_o vital_a spirit_n and_o succus_fw-la vitalis_n of_o vegetable_n as_o to_o fire_n whether_o the_o vis_fw-fr ignea_fw-la have_v a_o proper_a hypostasis_fw-la of_o its_o own_o to_o which_o it_o be_v unite_v as_o the_o vis_fw-fr sentiens_fw-la have_v or_o whether_o it_o have_v no_o other_o substratum_fw-la but_o the_o body_n in_o which_o it_o be_v as_o the_o coal_n or_o iron_n or_o as_o the_o common_a body_n of_o the_o air_n itself_o through_o which_o it_o be_v universal_o diffuse_v may_v i_o confess_v be_v questionable_a yet_o certain_o it_o have_v some_o hypostasis_fw-la to_o which_o it_o be_v unite_v and_o primitive_o inexi_v and_o without_o which_o it_o seem_v it_o can_v be_v 2._o whereas_o no_o portion_n of_o matter_n be_v lose_v in_o nature_n or_o annihilable_a but_o by_o omnipotence_n those_o vires_fw-la essentiales_fw-la be_v in_o their_o individual_n extinguish_v and_o lose_v and_o no_o where_o in_o nature_n upon_o the_o destruction_n dissipation_n or_o dissolution_n of_o the_o necessary_a hypostasis_fw-la or_o subject_a of_o their_o inexistence_n when_o the_o animal_n spirit_n be_v whole_o dissipate_v or_o dissolve_v the_o vis_fw-fr sentiens_fw-la of_o that_o animal_n be_v lose_v and_o no_o where_o when_o water_n be_v throw_v upon_o the_o coal_n of_o fire_n the_o vis_fw-fr ignea_fw-la that_fw-mi be_v in_o it_o be_v extinct_a and_o nullibi_fw-la and_o as_o it_o seem_v do_v not_o facessere_fw-la in_o elementum_fw-la common_a ignis_fw-la at_o least_o if_o it_o have_v not_o a_o special_a hypostasis_fw-la of_o its_o own_o to_o which_o it_o be_v unite_v and_o when_o the_o magnet_n be_v burn_v in_o the_o fire_n the_o vis_fw-fr magnetica_fw-la in_o it_o be_v extinct_a and_o the_o same_o be_v to_o be_v say_v of_o that_o other_o more_o ignoble_a principle_n of_o motion_n hereafter_o mention_v viz._n active_a quality_n and_o this_o as_o i_o think_v give_v we_o a_o true_a notion_n of_o the_o soul_n of_o brute_n the_o form_n of_o vegetable_n of_o fire_n and_o other_o substantial_a form_n below_o the_o humane_a soul_n if_o any_o shall_v ask_v i_o what_o i_o take_v the_o soul_n of_o a_o
easy_o observe_v that_o in_o truth_n all_o kind_n of_o gravitation_n be_v but_o motion_n or_o conatus_fw-la ad_fw-la motum_fw-la but_o in_o that_o conatus_fw-la or_o nisus_n ad_fw-la motum_fw-la we_o be_v necessary_o to_o consider_v two_o thing_n 1._o the_o principium_fw-la motivum_fw-la 2._o the_o terminus_n motus_fw-la or_o conatus_fw-la ad_fw-la motum_fw-la the_o principium_fw-la motivum_fw-la may_v be_v various_a and_o tend_v to_o various_a termination_n it_o may_v be_v extrinsical_a and_o accidental_a as_o when_o i_o throw_v a_o stone_n into_o a_o bucket_n of_o water_n the_o motion_n of_o the_o water_n be_v thereby_o cause_v upward_o and_o raise_v its_o superficies_n and_o the_o motion_n of_o the_o water_n upward_o be_v not_o altogether_o improper_o call_v gravitation_n upward_o come_v from_o a_o external_a force_n again_o the_o principle_n of_o the_o motion_n or_o conatus_fw-la ad_fw-la motum_fw-la may_v be_v intrinsic_a and_o from_o that_o intrinsic_a principle_n may_v have_v a_o motion_n or_o conatus_fw-la ad_fw-la motum_fw-la downward_o which_o i_o call_v the_o intrinsic_a quality_n of_o gravity_n this_o intrinsic_a quality_n govern_v and_o incline_v the_o motion_n and_o conatus_fw-la ad_fw-la motum_fw-la to_o a_o central_a termination_n when_o it_o have_v no_o collateral_a impediment_n any_o man_n with_o half_a a_o eye_n may_v see_v here_o be_v a_o conatus_fw-la ad_fw-la motum_fw-la of_o the_o heavy_a body_n to_o a_o central_a motion_n which_o be_v its_o gravitation_n and_o yet_o the_o principle_n that_o impress_v this_o kind_n of_o termination_n of_o its_o motion_n be_v that_o which_o i_o call_v and_o call_v true_o the_o quality_n of_o gravity_n in_o the_o heavy_a body_n in_o the_o very_a instance_n of_o the_o motion_n of_o water_n in_o relation_n to_o the_o rundle_n of_o wood_n specifical_o light_a than_o water_n we_o may_v observe_v both_o these_o gravitation_n or_o motion_n the_o water_n press_v downward_o from_o its_o intrinsical_a principle_n or_o quality_n of_o gravity_n and_o thereby_o undermine_v and_o get_v below_o the_o rundle_n and_o then_o by_o a_o relative_a occasional_a or_o accidental_a motion_n in_o relation_n to_o the_o rundle_n of_o wood_n it_o press_v upward_o and_o drive_v up_o the_o rundle_n of_o wood_n with_o a_o force_n and_o kind_n of_o gravitation_n or_o motion_n upward_o to_o the_o superficies_n of_o the_o water_n the_o same_o water_n have_v these_o various_a termination_n one_o downward_o from_o its_o own_o intrinsic_a quality_n of_o gravity_n though_o the_o exercise_n thereof_o be_v suspend_v till_o it_o find_v a_o light_a body_n within_o its_o dimension_n to_o exert_v it_o the_o other_o upward_a in_o relation_n to_o the_o rundle_n of_o wood_n which_o by_o circumpulsion_n it_o drive_v upward_o and_o therefore_o the_o kind_a consequence_n that_o i_o hold_v there_o be_v nothing_o but_o mobility_n in_o body_n and_o that_o i_o use_v the_o phrase_n of_o gravity_n according_a to_o the_o vulgar_a acceptation_n and_o as_o idolum_fw-la fori_fw-la or_o that_o the_o actual_a descent_n of_o water_n or_o other_o heavy_a body_n be_v from_o a_o distinct_a be_v as_o be_v infer_v in_o the_o first_o second_o and_o six_o section_n of_o that_o chapter_n be_v but_o mistake_v collection_n and_o have_v no_o concession_n from_o i_o or_o any_o thing_n i_o have_v therein_o assert_v nor_o be_v at_o all_o true_a as_o i_o think_v as_o to_o the_o 4_o the_o and_o 5_o the_o illation_n in_o that_o remark_n where_o it_o be_v say_v the_o water_n have_v no_o nisus_n ad_fw-la motum_fw-la upward_o into_o the_o tube_n immerse_v and_o stop_v at_o the_o low_a end_n till_o open_v that_o in_o the_o sequel_n of_o this_o enquiry_n will_v appear_v not_o to_o be_v altogether_o true_a but_o if_o it_o be_v never_o so_o true_a yet_o it_o impugn_v not_o what_o be_v above_o by_o i_o deliver_v for_o the_o water_n be_v drive_v up_o into_o the_o tube_n by_o the_o weight_n of_o the_o body_n of_o the_o water_n in_o the_o bucket_n upon_o the_o cavity_n of_o the_o tube_n fill_v only_o with_o air_n and_o so_o the_o rise_n of_o the_o water_n into_o the_o tube_n be_v by_o the_o pressure_n of_o a_o accidental_a position_n and_o the_o fluidity_n of_o the_o ascend_a water_n meet_v with_o a_o element_n in_o the_o tube_n light_a than_o the_o water_n we_o see_v in_o a_o pair_n of_o scale_n a_o weight_n of_o two_o pound_n in_o one_o scale_n make_v the_o weight_n of_o one_o pound_n in_o the_o other_o scale_n to_o ascend_v though_o both_o be_v heavy_a body_n and_o this_o by_o mechanic_n and_o statique_a principle_n so_o in_o the_o siphon_n a_o b_o water_n pour_v into_o the_o leg_n a_o raise_v the_o water_n in_o the_o other_o leg_n to_o a_o equal_a superficies_n upon_o necessary_a statique_a ground_n without_o call_v in_o any_o subsidiary_a spirit_n of_o nature_n to_o effect_v the_o ascent_n for_o rhe_n siphon_n be_v a_o kind_n of_o natural_a libra_n and_o so_o when_o the_o tube_n stop_v with_o the_o finger_n beneath_o be_v immerse_v into_o a_o bucket_n of_o water_n and_o then_o open_v the_o circumjacent_a water_n be_v both_o fluid_a and_o heavy_a be_v drive_v up_o into_o the_o vacant_a tube_n till_o it_o come_v to_o a_o equal_a superficies_n with_o the_o rest_n of_o the_o water_n in_o the_o bucket_n by_o a_o kind_n of_o due_a equipondium_fw-la and_o all_o this_o be_v most_o regular_o and_o necessary_o effect_v according_a to_o the_o common_a mechanism_n of_o statique_a principle_n without_o any_o help_n from_o the_o suppose_a spirit_n of_o nature_n to_o fetch_v out_o the_o air_n out_o of_o the_o tube_n or_o to_o raise_v the_o water_n into_o it_o there_o be_v many_o accidental_a cause_n of_o the_o motion_n of_o water_n vertical_o upward_a which_o yet_o consist_v with_o its_o intrinsical_a principle_n or_o quality_n which_o i_o call_v gravity_n or_o conatus_fw-la to_o a_o central_a motion_n for_o instance_n 1._o it_o be_v move_v upward_o by_o cast_v into_o it_o a_o heavy_a body_n which_o take_v up_o some_o of_o its_o room_n as_o throw_v a_o stone_n into_o a_o bucket_n of_o water_n 2._o it_o be_v move_v upward_o by_o attraction_n as_o in_o pump_n and_o syringe_n 3._o it_o be_v move_v upward_o when_o within_o its_o own_o dimension_n it_o meet_v with_o a_o light_a body_n than_o itself_o as_o in_o the_o instance_n of_o the_o tube_n of_o air_n immerse_v and_o then_o unstop_v at_o the_o bottom_n or_o where_o a_o rundle_n of_o light_a wood_n be_v immerse_v in_o it_o it_o be_v apparent_a the_o water_n raise_v it_o and_o cast_v it_o to_o the_o superficies_n with_o a_o kind_n of_o force_n so_o that_o it_o will_v leap_v above_o the_o superficies_n of_o the_o water_n when_o it_o come_v thither_o but_o these_o accidental_a vertical_a motion_n do_v not_o at_o all_o take_v away_o the_o intrinsic_a principle_n of_o its_o gravity_n but_o consist_v with_o it_o and_o therefore_o it_o be_v no_o contradiction_n to_o say_v that_o gravitation_n be_v but_o conatus_fw-la ad_fw-la motum_fw-la be_v the_o motion_n lateral_a or_o vertical_a or_o central_a and_o yet_o at_o the_o same_o time_n to_o say_v that_o gravity_n be_v a_o quality_n in_o heavy_a body_n that_o specificate_v and_o determine_v their_o conatus_fw-la ad_fw-la motum_fw-la to_o be_v central_a or_o perpendicular_a remark_n ii_o descent_n of_o body_n this_o remark_n will_v sure_o have_v have_v be_v spare_v if_o the_o author_n have_v be_v please_v to_o have_v read_v the_o next_o page_n where_o it_o be_v affirm_v that_o water_n pour_v through_o the_o air_n have_v a_o direct_a central_a direction_n and_o gravitation_n pag._n 14._o of_o the_o essay_n remark_n iii_o touch_v the_o gravitation_n of_o part_n of_o solid_a body_n one_o upon_o another_o that_o every_o part_n of_o a_o solid_a body_n have_v its_o common_a quality_n of_o heaviness_n and_o will_v in_o a_o state_n of_o separation_n descend_v and_o that_o every_o part_n contribute_v to_o the_o weight_n of_o the_o whole_a be_v no_o where_o question_v only_o when_o the_o body_n be_v in_o continuity_n and_o of_o a_o equal_a consistence_n that_o there_o be_v a_o suspension_n of_o actual_a gravitation_n of_o one_o part_n upon_o another_o be_v that_o which_o be_v affirm_v but_o where_o they_o be_v of_o different_a consistency_n there_o many_o time_n happen_v actual_a and_o sensible_a gravitation_n of_o one_o part_n of_o a_o solid_a body_n upon_o another_o this_o be_v observe_v in_o the_o three_o chapter_n of_o the_o nugae_fw-la pag._n 1._o and_o have_v it_o be_v observe_v the_o remark_n i_o suppose_v will_v have_v be_v spare_v remark_n iv_o five_o vi_o vii_o upon_o the_o four_o chapter_n for_o the_o render_v my_o thought_n more_o intelligible_a touch_v gravitation_n of_o fluids_n and_o to_o make_v my_o approach_n to_o it_o the_o more_o easy_a and_o fair_a i_o give_v in_o that_o chapter_n instance_n of_o solute_a solid_a body_n and_o how_o the_o pressure_n of_o their_o part_n be_v refract_v i_o
with_o a_o lumen_fw-la of_o a_o quarter_n of_o a_o inch_n diameter_n in_o the_o side_n near_o the_o base_a be_v fill_v with_o water_n the_o parabolical_a line_n that_o the_o water_n will_v make_v out_o of_o that_o vessel_n in_o its_o first_o exsilition_n will_v be_v as_o long_o yea_o and_o somewhat_o long_o than_o the_o like_a parabolical_a line_n make_v in_o the_o first_o exsilition_n by_o the_o like_a lumen_fw-la out_o of_o a_o vessel_n of_o six_o inch_n diameter_n and_o the_o same_o height_n which_o must_v needs_o proceed_v from_o the_o great_a pressure_n by_o that_o column_n of_o water_n that_o have_v a_o equal_a height_n but_o a_o base_a of_o more_o equality_n to_o the_o lumen_fw-la according_a to_o the_o subjoined_a figure_n remark_n viii_o ix_o the_o true_a reason_n of_o the_o rise_n of_o the_o rundle_n of_o wood_n be_v neither_o from_o the_o spirit_n of_o nature_n nor_o from_o a_o hylarchical_a principle_n but_o from_o the_o plain_a common_a know_v rule_n of_o hydrostaticks_n whereby_o necessary_o a_o fluid_a body_n drive_v up_o a_o solid_a body_n light_a than_o itself_o to_o the_o superficies_n if_o it_o can_v by_o any_o mean_n in_o the_o least_o proportion_n insinuate_v itself_o between_o the_o rundle_n and_o the_o base_a of_o the_o vessel_n and_o this_o be_v do_v by_o circumpulsion_n but_o as_o touch_v stevinus_n his_o experiment_n of_o the_o rundle_n cover_v a_o pertuse_n or_o hole_n in_o the_o basis_n of_o the_o vessel_n i_o must_v needs_o say_v stevinus_n deliver_v it_o in_o his_o observation_n upon_o the_o 10_o the_o proposition_n of_o his_o hydrostatiques_n from_o whence_o i_o transcribe_v it_o pag._n 94._o of_o the_o nugae_fw-la i_o have_v say_v enough_o touch_v this_o business_n before_o upon_o remark_n 19_o 20._o upon_o the_o essay_n i_o shall_v therefore_o short_o collect_v somewhat_o of_o what_o be_v there_o more_o full_o deliver_v if_o the_o rundle_n of_o wood_n be_v specifical_o light_a than_o a_o portion_n of_o water_n equal_a to_o its_o mole_n and_o the_o rundle_n be_v press_v down_o as_o contiguous_a as_o may_v be_v to_o the_o plain_a basis_n of_o the_o vessel_n yet_o it_o will_v rise_v for_o by_o reason_n of_o the_o porosity_n and_o chamfer_n of_o the_o wood_n all_o the_o industry_n imaginable_a will_v not_o press_v it_o so_o close_o but_o there_o will_v be_v some_o interstitia_fw-la between_o the_o rundle_n and_o the_o basis_n or_o bottom_n of_o the_o vessel_n into_o which_o the_o water_n will_v creep_v and_o so_o undermine_v and_o drive_v up_o the_o rundle_n to_o the_o superficies_n of_o the_o water_n by_o a_o ascend_a pressure_n of_o the_o water_n which_o ascend_v pressure_n be_v nevertheless_o wrought_v and_o effect_v first_o by_o a_o descent_n of_o the_o water_n round_o the_o side_n of_o the_o rundle_n and_o so_o by_o a_o kind_n of_o balance_n overweigh_a the_o rundle_n of_o wood_n and_o thereupon_o necessary_o weigh_v it_o up_o 2._o if_o the_o rundle_n be_v close_o fix_v to_o the_o bottom_n by_o a_o viscous_a or_o glutinous_a or_o thick_a oily_a matter_n that_o the_o water_n can_v get_v under_o it_o the_o rundle_n will_v not_o rise_v upon_o this_o double_a account_n 1._o because_o that_o adhere_a oil_n by_o the_o mutual_a adhesion_n to_o the_o rundle_n and_o base_a render_v the_o rundle_n consequential_o and_o effective_o and_o extrinsecal_o heavy_a by_o its_o adhesion_n than_o the_o like_a mole_n of_o water_n whereby_o the_o water_n can_v raise_v it_o but_o 2._o and_o principal_o because_o the_o interpose_a viscous_a oil_n do_v obstruct_v the_o migration_n or_o insinuation_n of_o the_o water_n between_o the_o rundle_n and_o basis_n or_o bottom_n of_o the_o vessel_n and_o so_o it_o can_v get_v under_o it_o to_o drive_v it_o up_o but_o stand_v now_o as_o one_o common_a fix_a base_a of_o the_o vessel_n unite_v to_o the_o true_a base_a thereof_o 3._o if_o there_o be_v a_o hole_n in_o the_o bottom_n of_o the_o vessel_n suppose_v of_o two_o inch_n diameter_n and_o the_o rundle_n of_o light_n wood_n be_v 4_o inch_n diameter_n and_o so_o overlap_v the_o orifice_n the_o rundle_n will_v not_o rise_v because_o the_o water_n notwithstanding_o all_o the_o care_n imaginable_a will_v creep_v under_o the_o side_n of_o the_o rundle_n and_o discharge_v itself_o gradual_o through_o the_o hole_n for_o the_o water_n have_v never_o so_o little_a passage_n through_o the_o pertuse_n or_o hole_n though_o not_o commensurate_a to_o the_o 40th_o part_n of_o its_o amplitude_n will_v contend_v and_o press_v that_o way_n and_o so_o gravitate_fw-la upon_o the_o rundle_n that_o lie_v in_o its_o way_n by_o its_o conatus_fw-la ad_fw-la motum_fw-la to_o that_o orifice_n where_o it_o find_v never_o so_o little_a vent_n that_o it_o may_v discharge_v itself_o for_o the_o water_n press_v upon_o and_o through_o the_o orifice_n do_v necessary_o press_v upon_o the_o interpose_a rundle_n 4._o and_o if_o the_o rundle_n of_o wood_n can_v be_v keep_v so_o close_o to_o the_o bottom_n either_o by_o its_o own_o exquisite_a smoothness_n which_o be_v hardly_o possible_a or_o by_o any_o viscous_a oil_n or_o by_o any_o fixation_n to_o the_o bottom_n or_o base_a of_o the_o vessel_n now_o it_o stand_v as_o one_o common_a base_a to_o the_o water_n as_o the_o rest_n of_o the_o bottom_n of_o the_o vessel_n do_v and_o be_v of_o no_o use_n to_o explicate_v the_o phaenomenon_n for_o it_o be_v all_o one_o as_o if_o it_o be_v one_o continue_v solid_a base_n to_o the_o vessel_n unmoved_a and_o unmoveable_a by_o the_o water_n and_o this_o upon_o more_o than_o one_o trial_n i_o find_v true_a and_o when_o due_o weigh_v it_o make_v nothing_o in_o favour_n of_o the_o remarker_n hypothesis_n or_o to_o the_o disadvantage_n of_o my_o supposition_n in_o the_o essay_n though_o i_o confess_v it_o do_v more_o distinct_o and_o clear_o explicate_v the_o phaenomenon_n remark_n x._o the_o adequate_a reason_n be_v true_o give_v by_o i_o if_o the_o glass_n be_v excessive_o strong_a or_o if_o it_o be_v fill_v with_o water_n it_o will_v not_o break_v because_o the_o internal_a water_n bear_v as_o strong_o against_o the_o external_a pressure_n of_o the_o external_a water_n as_o that_o can_v downward_o against_o it_o as_o we_o see_v in_o make_v new_a cut_n and_o river_n if_o there_o be_v a_o river_n with_o a_o small_a or_o weak_a bank_n on_o its_o south_n side_n and_o another_o cut_n of_o water_n be_v make_v on_o the_o south_n side_n of_o that_o slender_a bank_n the_o water_n in_o the_o river_n will_v not_o break_v the_o bank_n for_o the_o adjacent_a cut_n fill_v with_o water_n strengthen_v the_o bank_n by_o its_o renitence_n but_o if_o the_o cutt_n be_v empty_a of_o water_n the_o bank_n of_o the_o river_n will_v break_v because_o the_o conterminous_a air_n be_v not_o of_o strength_n enough_o to_o balance_v it_o the_o side_n of_o the_o glass-bottle_n of_o themselves_o be_v too_o weak_a to_o protect_v they_o and_o the_o include_v air_n capable_a of_o compression_n by_o the_o heavy_a element_n of_o water_n it_o want_v strength_n to_o protect_v it_o and_o so_o break_v but_o as_o for_o the_o air_n be_v out_o of_o its_o place_n when_o under_o water_n i_o have_v observe_v enough_o before_o of_o the_o vanity_n of_o that_o reason_n and_o the_o ensue_a remark_n will_v give_v i_o occasion_n to_o reinforce_v it_o remark_n xi_o if_o the_o remarker_n have_v be_v please_v to_o take_v notice_n of_o what_o be_v so_o often_o mention_v in_o both_o the_o tract_n upon_o which_o he_o remark_n and_o be_v of_o infallible_a truth_n that_o the_o pressure_n of_o water_n in_o this_o instance_n and_o divers_a other_o be_v never_o secundum_fw-la amplitudinem_fw-la but_o secundum_fw-la altitudinem_fw-la much_o of_o this_o remark_n may_v have_v be_v spare_v and_o the_o censure_n of_o absurdity_n will_v have_v be_v reserve_v to_o better_a purpose_n for_o the_o water_n in_o the_o pipe_n of_o one_o quarter_n of_o a_o inch_n diameter_n must_v be_v counterpoise_v with_o a_o cylinder_n of_o external_a water_n of_o equal_a height_n and_o length_n to_o that_o in_o the_o tube_n and_o if_o the_o height_n be_v less_o though_o the_o amplitude_n of_o the_o water_n be_v more_o it_o will_v not_o counterpoise_v it_o in_o this_o motion_n remark_n xii_o xiii_o i_o come_v to_o the_o instance_n which_o i_o call_v the_o valve_n he_o call_v the_o obturaculum_fw-la i_o have_v give_v my_o reason_n of_o that_o phaenomenon_n why_o the_o obturaculum_fw-la will_v not_o subside_o in_o such_o a_o immersion_n into_o water_n this_o be_v the_o subject_a of_o cap._n 6._o nugarum_fw-la pag._n 102_o etc._n etc._n and_o in_o the_o observation_n upon_o the_o remark_n which_o be_v this_o in_o effect_n when_o the_o whole_a tube_n with_o its_o valve_n close_v be_v counterpoise_v with_o a_o portion_n of_o water_n of_o great_a or_o at_o least_o equal_a weight_n to_o the_o whole_a instrument_n and_o of_o equal_a