title_n do_v not_o at_o all_o diversify_v the_o action_n but_o if_o any_o one_o will_v rather_o signify_v the_o heat_n of_o the_o blood_n by_o any_o of_o these_o different_a word_n i_o shall_v be_v equal_o please_v with_o they_o or_o any_o of_o they_o provide_v they_o all_o meet_v in_o the_o matter_n signify_v by_o they_o and_o do_v not_o deny_v that_o which_o seem_v to_o be_v true_a that_o the_o heat_n proceed_v from_o a_o swift_a intestine_a motion_n of_o its_o particle_n which_o motion_n be_v the_o reason_n why_o it_o affect_v our_o sensory_a so_o as_o to_o cause_v a_o sensation_n of_o heat_n but_o as_o the_o reason_n why_o it_o affect_v our_o sensory_a so_o be_v not_o power_n sufficient_o satisfactory_a to_o explain_v what_o be_v the_o cause_n and_o how_o it_o come_v by_o that_o power_n of_o cause_v such_o a_o sensation_n in_o make_v a_o enquiry_n into_o the_o cause_n of_o that_o i_o shall_v beg_v leave_n to_o make_v use_n of_o that_o word_n which_o i_o think_v to_o be_v most_o expressive_a viz._n fermentation_n for_o since_o in_o every_o mechanical_a action_n there_o be_v a_o agent_n and_o a_o fermentation_n patient_n and_o the_o agent_n operate_v upon_o the_o patient_n by_o move_v powerful_o against_o the_o part_n of_o it_o and_o in_o that_o motion_n the_o part_n of_o the_o one_o strike_v against_o and_o rub_v upon_o the_o other_o so_o far_o it_o may_v be_v call_v attrition_n and_o if_o by_o the_o force_n of_o the_o agent_n the_o motion_n and_o consequent_o attrition_n be_v more_o violent_a and_o the_o consequence_n of_o that_o attrition_n be_v a_o production_n of_o a_o power_n to_o cause_v a_o sensation_n of_o heat_n so_o far_o it_o may_v be_v call_v fermentation_n if_o then_o in_o cause_v the_o heat_n of_o the_o blood_n there_o be_v such_o a_o motion_n and_o attrition_n and_o the_o consequence_n of_o it_o be_v heat_n we_o may_v proper_o say_v the_o blood_n grow_v hot_a by_o attrition_n and_o fermentation_n but_o because_o to_o signify_v the_o heat_n of_o the_o blood_n by_o attrition_n fermentation_n and_o fermentation_n will_v be_v needless_a i_o will_v signify_v all_o that_o action_n by_o fermentation_n and_o when_o i_o say_v the_o blood_n grow_v hot_a by_o fermentation_n i_o will_v be_v understand_v to_o mean_v and_o signify_v both_o that_o attrition_n of_o part_n which_o be_v the_o cause_n of_o fermentation_n and_o also_o fermentation_n which_o be_v the_o consequence_n of_o attrition_n yet_o if_o any_o one_o will_v rather_o say_v it_o grow_v hot_a by_o accension_n they_o have_v my_o assent_n provide_v they_o mean_v thereby_o not_o so_o high_a a_o degree_n of_o heat_n as_o be_v usual_o signify_v by_o that_o word_n but_o since_o it_o sound_v rather_o too_o harsh_a and_o imply_v too_o high_a a_o degree_n of_o attrition_n and_o fermentation_n than_o that_o which_o be_v common_o in_o the_o blood_n i_o more_o willing_o make_v choice_n of_o the_o former_a viz._n fermentation_n and_o since_o i_o have_v say_v thus_o much_o of_o the_o use_n of_o word_n apply_v mixture_n to_o signify_v the_o heat_n of_o the_o blood_n i_o shall_v here_o take_v notice_n of_o what_o be_v by_o way_n of_o discourse_n tell_v i_o by_o one_o to_o who_o i_o communicate_v in_o some_o measure_n my_o notion_n concern_v the_o heat_n of_o the_o blood_n which_o be_v this_o he_o say_v he_o think_v he_o can_v prove_v that_o it_o be_v do_v by_o mixture_n and_o pressure_n and_o that_o he_o can_v explain_v the_o heat_n of_o the_o blood_n by_o that_o notion_n i_o shall_v here_o conceal_v the_o author_n name_n because_o he_o have_v not_o make_v it_o public_a upon_o this_o account_n though_o upon_o some_o other_o to_o very_o little_a purpose_n and_o because_o he_o tell_v i_o he_o intend_v to_o publish_v it_o i_o shall_v for_o his_o satisfaction_n and_o also_o the_o satisfaction_n of_o those_o to_o who_o he_o have_v communicate_v it_o say_v that_o as_o i_o have_v show_v that_o in_o mechanical_a action_n there_o be_v a_o motion_n and_o by_o that_o motion_n there_o must_v be_v employ_v a_o mixture_n to_o any_o one_o that_o do_v but_o understand_v the_o circulation_n of_o the_o humour_n in_o a_o man_n body_n and_o it_o will_v consequent_o follow_v that_o where_o there_o be_v a_o mixture_n and_o a_o motion_n of_o humour_n there_o must_v needs_o be_v also_o a_o attrition_n of_o part_n so_o move_v which_o attrition_n imply_v a_o pressure_n for_o there_o can_v be_v no_o attrition_n without_o a_o pressure_n though_o pressure_n do_v not_o imply_v attrition_n this_o be_v all_o he_o tell_v i_o and_o consequent_o all_o that_o i_o can_v answer_v but_o for_o as_o much_o as_o i_o can_v gather_v from_o the_o remain_a part_n of_o his_o discourse_n the_o most_o essential_a part_n of_o his_o notion_n but_o from_o what_o he_o say_v it_o appear_v not_o what_o pressure_n he_o mean_v that_o be_v a_o pressure_n of_o what_o whether_o of_o the_o particle_n of_o blood_n with_o one_o another_o or_o not_o and_o it_o be_v plain_a that_o he_o do_v not_o believe_v that_o animal_n spirit_n circulate_v through_o the_o nerve_n i_o not_o only_o conclude_v that_o his_o pressure_n be_v only_o of_o the_o particle_n of_o blood_n because_o there_o be_v none_o other_o except_o serum_n to_o mix_v with_o it_o but_o also_o that_o what_o he_o have_v to_o say_v for_o it_o be_v rather_o about_o the_o use_n of_o word_n than_o any_o thing_n else_o and_o therefore_o i_o have_v show_v he_o how_o far_o his_o word_n be_v significant_a in_o my_o hypothesis_n but_o word_n whereby_o we_o signify_v the_o heat_n of_o thing_n the_o blood_n be_v nothing_o at_o all_o to_o the_o cause_n of_o it_o and_o to_o dispute_v whether_o it_o may_v be_v call_v accension_n or_o fermentation_n not_o at_o all_o inform_a what_o be_v the_o principal_a or_o accessary_a cause_n of_o it_o i_o shall_v proceed_v to_o show_v how_o it_o be_v begin_v and_o carry_v on_o and_o by_o what_o that_o be_v what_o humour_n be_v active_a and_o what_o passive_a in_o produce_v heat_n or_o a_o power_n to_o heat_n and_o how_o they_o be_v so_o and_o after_o what_o manner_n as_o also_o where_o they_o chief_o operate_v and_o that_o it_o may_v appear_v we_o be_v to_o consider_v they_o that_o the_o material_a and_o corruptible_a part_n of_o a_o man_n in_o which_o the_o immaterial_a and_o immortal_a be_v lodge_v be_v make_v up_o of_o solid_a and_o liquid_a part_n the_o solid_a part_n be_v all_o those_o vessel_n that_o make_v the_o body_n a_o curious_a contrive_v vascular_a engine_n which_o be_v fill_v with_o and_o actuate_v by_o liquid_n and_o in_o which_o they_o all_o circulate_a and_o as_o those_o vessel_n carry_v different_a sort_n of_o liquid_n so_o they_o be_v call_v by_o different_a name_n vein_n artery_n nerve_n etc._n etc._n through_o the_o artery_n and_o vein_n the_o mass_n of_o blood_n continual_o circulate_v and_o animal_n spirit_n through_o the_o nerve_n the_o vein_n and_o artery_n be_v as_o if_o it_o be_v fermentation_n both_o root_v and_o spring_a from_o the_o heart_n be_v branch_v up_o and_o down_o the_o body_n both_o through_o the_o external_n as_o well_o as_o internal_a part_n except_o those_o that_o the_o vena_fw-la porta_n supply_v and_o the_o nerve_n take_v their_o original_a from_o the_o brain_n and_o spinal_a marrow_n be_v disperse_v through_o the_o whole_a and_o meet_v with_o the_o capillary_a termination_n of_o the_o vein_n and_o artery_n they_o be_v interweave_v one_o with_o another_o terminate_v all_o together_o and_o as_o i_o metaphorical_o express_v it_o in_o my_o treatise_n of_o muscular_a motion_n all_o terminate_v in_o small_a gland_n in_o the_o cavity_n of_o which_o both_o through_o the_o substance_n of_o the_o muscle_n as_o well_o as_o the_o internal_a part_n the_o artery_n lay_v down_o blood_n and_o the_o nerve_n either_o mediate_o or_o immediate_o animal_n spirit_n and_o have_v there_o also_o prove_v that_o a_o subtle_a liquor_n make_v and_o prepare_v in_o these_o gland_n by_o formentation_n be_v according_a to_o the_o different_a degree_n of_o spirit_n send_v there_o by_o our_o appetite_n not_o only_o subtilise_v but_o thrust_v out_o by_o a_o succession_n of_o matter_n into_o the_o fiber_n and_o circulate_v through_o they_o distend_v they_o and_o by_o that_o mean_n contract_v the_o muscle_n and_o there_o also_o have_v show_v that_o the_o fermentation_n be_v cause_v by_o a_o mutual_a conflict_n of_o the_o blood_n and_o spirit_n i_o shall_v now_o in_o this_o treatise_n endeavour_v to_o explain_v from_o that_o mutual_a conflict_n the_o heat_n of_o the_o blood_n and_o because_o some_o as_o yet_o doubt_n whether_o animal_n demonstrate_v spirit_n circulate_v through_o the_o nerve_n or_o not_o and_o other_o though_o they_o be_v willing_a and_o find_v it_o necessary_a to_o grant_v that_o spirit_n do_v real_o run_v through_o they_o yet_o profess_v that_o they_o can_v be_v demonstrate_v
i_o shall_v before_o i_o proceed_v to_o show_v how_o the_o heat_n of_o the_o blood_n be_v cause_v endeavour_v to_o demonstrate_v those_o spirit_n and_o prove_v that_o they_o circulate_v through_o the_o nerve_n as_o plain_o as_o we_o can_v by_o the_o help_n of_o our_o reason_n and_o the_o testimony_n of_o our_o sense_n demonstrate_v any_o and_o the_o most_o apparent_a thing_n whatsoever_o for_o any_o one_o that_o do_v but_o look_v into_o the_o substance_n brain_n of_o the_o brain_n i_o think_v needs_o neither_o doubt_n nor_o be_v ignorant_a what_o the_o animal_n spirit_n be_v nor_o of_o their_o nature_n which_o appear_v as_o manifest_o as_o the_o humour_n of_o a_o man_n body_n but_o perhaps_o it_o will_v be_v a_o hard_a task_n to_o brain_n persuade_v some_o that_o that_o oily_a and_o clammy_a moisture_n in_o the_o brain_n be_v animal_n spirit_n since_o it_o seem_v as_o some_o say_v to_o be_v as_o gross_a a_o substance_n as_o any_o liquid_a in_o the_o body_n to_o this_o i_o answer_v that_o if_o we_o take_v animal_n spirit_n answer_v or_o that_o moisture_n in_o the_o brain_n and_o compare_v it_o with_o coagulate_v blood_n it_o be_v much_o more_o fine_a and_o pure_a and_o not_o half_a so_o tough_a and_o clammy_a whereas_o if_o it_o be_v a_o more_o gross_a and_o sluggish_a body_n it_o will_v be_v a_o great_a deal_n more_o viscid_a and_o phlegmatic_a but_o if_o we_o further_o compare_v the_o taste_n of_o the_o prove_v brain_n with_o the_o taste_n of_o the_o blood_n it_o will_v be_v evident_a that_o that_o sweet_a substance_n be_v the_o spirit_n of_o the_o blood_n and_o consequent_o that_o it_o be_v animal_n spirit_n for_o as_o the_o blood_n be_v a_o sweet_a mass_n inpregnate_v with_o diverse_a sort_n of_o salt_n and_o phlegmatic_a crude_a serum_n so_o the_o substance_n of_o the_o brain_n be_v moisten_v with_o a_o oily_a sweet_a salino-sulphureous_a mass_n free_a from_o those_o indigested_a dregs_o that_o swim_v along_o with_o the_o blood_n be_v separate_v from_o those_o impurities_n in_o the_o cortical_a part_n of_o the_o brain_n now_o if_o a_o spirit_n partake_v of_o the_o nature_n of_o that_o body_n it_o be_v separate_v or_o draw_v from_o this_o be_v a_o argument_n strong_a enough_o to_o convince_v any_o rational_a man_n that_o that_o moisture_n be_v the_o spirit_n of_o the_o body_n since_o we_o learn_v by_o our_o taste_n that_o it_o be_v the_o pure_a and_o most_o refine_a part_n of_o the_o blood_n as_o a_o spirit_n ought_v to_o be_v but_o some_o think_v it_o too_o gross_a a_o humour_n to_o do_v perform_v all_o those_o action_n which_o they_o think_v the_o animal_n spirit_n do_v yet_o if_o they_o grant_v that_o the_o mass_n of_o blood_n be_v the_o pabulum_fw-la of_o the_o animal_n spirit_n as_o i_o think_v none_o can_v deny_v since_o any_o considerable_a evacuation_n of_o it_o present_o sink_v and_o diminish_v they_o than_o it_o will_v be_v very_o manifest_a that_o those_o spirit_n be_v able_a to_o perform_v all_o those_o action_n that_o we_o can_v true_o suppose_v animal_n spirit_n to_o do_v for_o if_o by_o withdraw_v that_o sweet_a viscid_n pabulum_fw-la that_o sweet_a oily_a mucilaginous_a moisture_n in_o the_o brain_n be_v diminish_v and_o upon_o that_o diminution_n the_o animal_n spirit_n be_v present_o less_o vigorous_a and_o on_o the_o contrary_a if_o by_o enrich_v the_o blood_n and_o consequent_o increase_a the_o stock_n of_o animal_n spirit_n the_o action_n of_o the_o body_n as_o well_o as_o of_o the_o mind_n be_v strong_a we_o must_v consequent_o believe_v that_o they_o be_v moderate_o perform_v by_o they_o when_o that_o oily_a substance_n neither_o too_o plentiful_o abound_v nor_o be_v too_o much_o spend_v and_o consume_v but_o some_o people_n will_v not_o believe_v that_o to_o answer_v be_v animal_n spirit_n because_o they_o say_v they_o can_v get_v so_o much_o as_o one_o drop_n of_o it_o out_o of_o the_o vessel_n to_o which_o i_o answer_v that_o if_o they_o deny_v it_o to_o be_v animal_n spirit_n because_o they_o can_v gather_v it_o in_o drop_n by_o the_o same_o reason_n they_o may_v deny_v blood_n to_o be_v blood_n because_o in_o small_a capillary_a vein_n when_o it_o be_v coagulate_v it_o can_v be_v drop_v out_o for_o not_o only_o the_o capillary_n sanguiferous_a vessel_n be_v so_o small_a that_o they_o can_v be_v see_v by_o good_a microscope_n but_o also_o the_o nervous_a fiber_n be_v so_o extreme_o diminutive_a and_o fine_a that_o they_o have_v be_v compute_v to_o be_v fourscore_o time_n as_o fine_a as_o a_o hair_n and_o consequent_o the_o liquor_n contain_v in_o each_o must_v be_v so_o little_a that_o five_o or_o six_o hundred_o vessel_n must_v be_v join_v together_o to_o make_v one_o drop_v so_o that_o be_v separate_v and_o divide_v into_o very_o small_a portion_n by_o the_o intermixture_n of_o the_o vessel_n it_o be_v no_o soon_o expose_v to_o the_o air_n but_o be_v immediate_o chill_v and_o coagulate_v which_o we_o may_v more_o easy_o believe_v when_o we_o take_v notice_n how_o thin_a and_o fluid_a the_o mass_n of_o blood_n be_v as_o long_o as_o it_o be_v in_o a_o swift_a and_o constant_a circulation_n that_o if_o a_o capillary_a vessel_n be_v but_o prick_v with_o a_o small_a pin_n blood_n immediate_o spurt_v out_o yet_o how_o soon_o when_o expose_v to_o the_o air_n do_v it_o thicken_v and_o coagulate_v though_o it_o be_v expose_v in_o great_a quantity_n so_o that_o one_o will_v scarce_o think_v it_o fit_a to_o move_v through_o vein_n so_o small_a that_o they_o can_v be_v discern_v by_o the_o best_a microscope_n much_o rather_o than_o may_v the_o animal_n spirit_n who_o portion_n be_v so_o incomparable_o diminutive_a be_v forthwith_o chill_v and_o thicken_v when_o they_o immediate_o as_o soon_o as_o they_o be_v expose_v to_o the_o air_n be_v almost_o equal_v with_o particle_n of_o nitre_n but_o be_v it_o never_o so_o evident_a that_o these_o be_v prove_v the_o animal_n spirit_n be_v that_o be_v in_o the_o brain_n yet_o most_o deny_v they_o a_o constant_a and_o free_a circulation_n but_o since_o we_o see_v that_o blood_n which_o be_v much_o more_o gross_a and_o thick_a than_o animal_n spirit_n when_o coagulate_v as_o long_o as_o it_o be_v in_o a_o quick_a and_o brisk_a motion_n can_v move_v through_o the_o small_a capillary_n we_o have_v great_a reason_n to_o believe_v that_o the_o animal_n spirit_n will_v move_v much_o more_o swift_a when_o separate_v and_o preserve_v from_o the_o nitre_n of_o the_o air_n and_o although_o they_o immediate_o thicken_v when_o expose_v to_o the_o air_n yet_o be_v they_o much_o more_o thin_a and_o liquid_a when_o in_o circulation_n but_o it_o be_v not_o only_o evident_a that_o these_o spirit_n be_v in_o a_o continual_a motion_n but_o also_o high_o necessary_a for_o either_o they_o must_v be_v in_o motion_n or_o stagnate_n and_o if_o they_o shall_v stagnate_n they_o will_v in_o a_o short_a time_n corrupt_a and_o putrify_v beside_o since_o there_o be_v a_o continual_a and_o constant_a supply_n separate_v in_o the_o cortical_a part_n of_o the_o brain_n there_o must_v be_v a_o continual_a decrease_v or_o otherwise_o there_o will_v be_v no_o room_n to_o receive_v they_o which_o evacuation_n we_o can_v rational_o imagine_v to_o be_v no_o other_o way_n but_o through_o the_o branch_n of_o the_o nerve_n and_o also_o because_o we_o perceive_v the_o effect_n of_o they_o in_o the_o musculous_a part_n from_o hence_o it_o appear_v that_o that_o oily_a substance_n in_o the_o brain_n be_v separate_v from_o the_o mass_n of_o blood_n be_v the_o sweet_a and_o most_o spirituous_a part_n of_o it_o and_o that_o it_o must_v needs_o circulate_v continual_o through_o the_o nerve_n i_o shall_v now_o consider_v the_o nature_n of_o it_o that_o we_o thence_o may_v gather_v more_o clear_o the_o manner_n of_o its_o operation_n which_o present_o appear_v if_o we_o do_v but_o consult_v consider_v our_o taste_n the_o taste_n of_o it_o be_v oily_a sweet_a and_o mucilaginous_a that_o substance_n be_v make_v up_o of_o the_o most_o volatile_a sulphureous_a and_o salt_a particle_n of_o the_o mass_n of_o blood_n which_o be_v incorporate_v in_o some_o of_o the_o most_o digest_v and_o ripen_v serum_n of_o the_o blood_n and_o by_o that_o mean_n appear_v in_o the_o form_n of_o a_o mucilage_n that_o these_o spirit_n be_v make_v up_o of_o the_o fine_a sulphureous_a particle_n and_o the_o most_o volatile_a salt_n of_o the_o blood_n be_v apparent_o prove_v by_o our_o constant_a diet_n for_o we_o always_o perceive_v ourselves_o most_o full_a of_o spirit_n after_o meat_n that_o abound_v with_o sulphur_n volatile_a salt_n and_o oil_n whereas_o all_o acid_n austeres_n etc._n etc._n which_o thicken_v oil_n and_o take_v of_o the_o force_n of_o volatile_a salt_n and_o sulphur_n depress_v our_o spirit_n and_o keep_v they_o too_o low_o that_o these_o spirit_n be_v full_a of_o
the_o heart_n and_o from_o the_o heart_n to_o the_o extremity_n of_o the_o vessel_n again_o be_v very_o short_a before_o there_o can_v be_v any_o sensible_a or_o considerable_a decay_n of_o it_o the_o blood_n be_v anew_o ferment_v in_o the_o gland_n and_o so_o by_o a_o continual_a circulation_n the_o heat_n of_o the_o blood_n be_v preserve_v and_o because_o by_o this_o time_n the_o animal_n spirit_n mix_v in_o the_o first_o fermentation_n with_o the_o blood_n be_v almost_o spend_v be_v incorporate_v with_o it_o and_o because_o part_v of_o it_o be_v continual_o separate_v in_o the_o brain_n it_o meet_v a_o second_o time_n with_o new_a supply_n and_o also_o by_o repeat_v fermentation_n be_v more_o impregnate_v with_o spirit_n as_o well_o as_o digest_v and_o ripen_v to_o a_o high_a degree_n of_o maturity_n thus_o i_o have_v give_v a_o account_n how_o the_o heat_n of_o the_o blood_n be_v carry_v on_o in_o the_o vessel_n that_o it_o may_v more_o clear_o appear_v how_o the_o original_a cause_n of_o heat_n be_v principal_o in_o the_o gland_n that_o the_o animal_n spirit_n be_v put_v into_o a_o elastic_a prove_v motion_n in_o the_o gland_n i_o have_v before_o prove_v by_o the_o grosser_n particle_n of_o the_o blood_n and_o that_o the_o blood_n so_o ferment_v be_v successive_o cast_v out_o into_o the_o vein_n be_v plain_a enough_o to_o any_o one_o that_o do_v but_o understand_v circulation_n to_o prove_v then_o that_o the_o blood_n be_v thrust_v out_o of_o the_o gland_n do_v by_o a_o further_a expansion_n of_o those_o spirit_n for_o a_o while_n increase_v the_o fermentation_n and_o that_o when_o the_o vigour_n of_o the_o spirit_n be_v spend_v it_o will_v gradual_o decay_v we_o need_v but_o take_v notice_n how_o fermentation_n be_v begin_v and_o carry_v on_o in_o other_o liquor_n for_o when_o oil_n of_o vitriol_n and_o spirit_n of_o ammoniac_a salt_n be_v mix_v together_o the_o part_n of_o each_o be_v in_o some_o measure_n mix_v and_o put_v into_o motion_n by_o drop_v the_o one_o into_o the_o other_o they_o present_o begin_v to_o ferment_n which_o fermentation_n be_v gradual_o exalt_v till_o by_o a_o frequent_a collision_n and_o attrition_n the_o most_o fermentative_a part_n fly_v away_o or_o their_o vigour_n be_v lose_v and_o then_o fermentation_n gradual_o decrease_v and_o in_o like_a manner_n all_o other_o liquor_n that_o for_o a_o time_n ferment_n with_o a_o sensible_a heat_n but_o if_o possible_a it_o will_v further_o appear_v that_o the_o original_a &_o principal_a cause_n of_o fermentation_n be_v in_o the_o gland_n if_o we_o do_v but_o consider_v how_o fermentation_n be_v carry_v on_o in_o a_o die_a body_n for_o in_o a_o body_n that_o be_v about_o to_o die_v the_o vigour_n as_o well_o as_o dead_a quantity_n of_o animal_n spirit_n be_v diminish_v and_o those_o too_o be_v less_o vigorous_o ground_n betwixt_o the_o part_n of_o the_o arterial_a blood_n expand_v so_o weak_o that_o they_o scarce_o agitate_v the_o mass_n of_o blood_n sufficient_o to_o preserve_v its_o heat_n but_o as_o soon_o as_o the_o blood_n and_o spirit_n cease_v to_o circulate_v the_o heat_n of_o the_o blood_n present_o grow_v mild_a till_o at_o last_o it_o be_v quite_o extinguish_v now_o if_o when_o the_o fermentation_n be_v weak_a the_o heat_n of_o the_o blood_n be_v more_o remiss_a and_o depress_v and_o when_o circulation_n be_v stop_v it_o consequent_o cease_v it_o must_v needs_o follow_v that_o the_o animal_n spirit_n be_v the_o cause_n of_o that_o fermentation_n and_o that_o it_o be_v promote_v by_o drive_v those_o two_o liquor_n forcible_o together_o and_o that_o the_o fermentation_n be_v chief_o cause_v in_o the_o gland_n be_v plain_a because_o when_o the_o spirit_n and_o blood_n cease_v to_o be_v drive_v together_o and_o there_o ferment_v the_o heat_n of_o the_o blood_n decrease_v and_o that_o it_o be_v not_o in_o the_o vessel_n be_v evident_a because_o after_o circulation_n be_v stop_v it_o present_o decline_v whereas_o if_o it_o be_v cause_v in_o the_o vessel_n it_o will_v continue_v after_o death_n as_o well_o as_o before_o since_o it_o than_o have_v the_o same_o matter_n though_o it_o want_v circulation_n and_o a_o forcible_a mixture_n and_o what_o i_o have_v show_v to_o be_v the_o consequence_n of_o it_o i_o shall_v only_o bring_v one_o argument_n more_o to_o prove_v that_o the_o attrition_n heat_n of_o the_o blood_n depend_v upon_o the_o attrition_n and_o fermentation_n in_o the_o glandule_n which_o may_v be_v infer_v from_o this_o common_a observation_n that_o the_o heat_n of_o the_o blood_n be_v increase_v by_o all_o violent_a motion_n for_o upon_o all_o violent_a motion_n a_o large_a quantity_n of_o animal_n spirit_n be_v send_v to_o the_o part_n to_o be_v move_v in_o order_n to_o prepare_v a_o great_a quantity_n of_o subtle_a liquor_n to_o distend_a and_o dilate_v the_o fibre_n the_o fermentation_n be_v not_o only_o raise_v high_a in_o the_o glandule_n but_o the_o motion_n of_o the_o heart_n be_v thus_o accidental_o increase_v quicken_v the_o circulation_n of_o the_o blood_n so_o much_o that_o before_o the_o vigorous_a motion_n of_o its_o part_n which_o be_v raise_v in_o the_o precedent_a fermentation_n be_v spend_v it_o be_v again_o renew_a but_o the_o circulation_n of_o the_o blood_n be_v not_o only_o quicken_v by_o the_o contraction_n of_o the_o heart_n but_o also_o by_o the_o frequent_o repeat_v contraction_n of_o the_o muscle_n for_o the_o heart_n contract_v send_v it_o out_o into_o the_o musculous_a part_n and_o again_o those_o muscle_n drive_v it_o soon_o and_o more_o forcible_o back_o upon_o the_o heart_n from_o whence_o it_o appear_v that_o both_o the_o heat_n of_o the_o blood_n be_v increase_v by_o be_v often_o ferment_v in_o those_o glandule_n and_o consequent_o that_o it_o depend_v on_o the_o mixture_n and_o fermentation_n of_o the_o animal_n spirit_n and_o arterial_a blood_n from_o hence_o it_o be_v manifest_a how_o far_o circulation_n be_v beneficial_a another_o in_o carry_v on_o the_o heat_n of_o the_o blood_n and_o if_o we_o consider_v the_o reason_n which_o i_o have_v give_v of_o muscular_a motion_n we_o shall_v see_v that_o as_o fermentation_n depend_v on_o muscular_a motion_n so_o muscular_a motion_n depend_v on_o fermentation_n so_o that_o as_o i_o say_v before_o there_o be_v a_o continual_a chain_n and_o circulation_n of_o cause_n as_o well_o as_o humour_n in_o a_o man_n body_n to_o proceed_v therefore_o to_o the_o second_o objection_n i_o suppose_v some_o admit_v may_v raise_v viz._n whether_o this_o fermentation_n can_v be_v carry_v on_o in_o so_o short_a a_o time_n as_o a_o continual_a and_o quick_a circulation_n will_v admit_v this_o do_v not_o only_o appear_v possible_a from_o evident_a matter_n of_o fact_n but_o also_o if_o we_o consider_v that_o in_o much_o less_o time_n than_o what_o be_v allow_v for_o fermentation_n in_o the_o glandule_n if_o a_o spark_n of_o fire_n be_v put_v to_o gunpowder_n it_o immediate_o put_v its_o part_n into_o a_o explosion_n and_o that_o the_o blood_n not_o only_a ferment_n in_o so_o short_a a_o time_n but_o that_o it_o may_v prepare_v that_o subtle_a matter_n which_o circulate_v through_o the_o muscular_a fibres_fw-fr we_o may_v with_o a_o great_a deal_n of_o reason_n believe_v if_o we_o do_v but_o take_v notice_n that_o warm_a milk_n if_o it_o be_v but_o forcible_o milk_v into_o vinegar_n it_o present_o be_v separate_v into_o two_o part_n viz._n curd_n and_o whey_n if_o then_o by_o mix_v these_o two_o liquor_n they_o cause_v so_o great_a a_o change_n on_o one_o another_o i_o can_v conceive_v any_o reason_n why_o part_n of_o the_o animal_n spirit_n ferment_v with_o the_o blood_n may_v not_o as_o soon_o be_v mix_v with_o some_o part_n of_o the_o rarefy_v succus_fw-la nutritius_n and_o force_v forward_o into_o the_o fibre_n but_o from_o what_o i_o have_v say_v it_o appear_v that_o beside_o the_o heat_n of_o the_o blood_n be_v cause_v in_o the_o glandule_n by_o fermentation_n and_o how_o it_o be_v continue_v in_o the_o musculous_a part_n i_o shall_v in_o the_o next_o place_n consider_v in_o what_o part_v it_o be_v most_o vigorous_o ferment_v which_o will_v appear_v only_o by_o consider_v where_o the_o spirit_n be_v most_o plentiful_o lay_v down_o for_o if_o fermentation_n depend_v on_o and_o be_v chief_o cause_v by_o the_o animal_n spirit_n as_o i_o have_v show_v then_o it_o must_v needs_o follow_v that_o the_o heat_n of_o the_o blood_n be_v most_o promote_v in_o those_o part_n where_o animal_n spirit_n be_v most_o predominant_a and_o have_v prove_v that_o in_o order_n to_o prepare_v that_o subtle_a liquor_n which_o cause_v contraction_n of_o the_o muscle_n a_o great_a quantity_n of_o animal_n spirit_n be_v send_v there_o it_o will_v follow_v that_o the_o blood_n grow_v hot_a be_v most_o vigorous_o ferment_v in_o those_o part_n that_o be_v in_o motion_n and_o
than_o it_o will_v follow_v that_o the_o heart_n be_v a_o part_n in_o constant_a motion_n and_o that_o motion_n proceed_v from_o a_o successive_a supply_n of_o spirit_n the_o blood_n must_v needs_o acquire_v the_o most_o considerable_a degree_n of_o heat_n in_o the_o substance_n of_o it_o but_o although_o i_o say_v that_o the_o blood_n for_o these_o reason_n acquire_v a_o great_a heat_n in_o the_o heart_n then_o in_o any_o other_o part_n i_o will_v not_o be_v think_v to_o mean_v that_o it_o grow_v hot_a so_o in_o the_o ventricles_n of_o the_o heart_n for_o the_o use_n of_o the_o heart_n be_v only_o to_o force_v the_o blood_n out_o of_o it_o and_o by_o dilate_v to_o receive_v it_o in_o again_o for_o another_o expulsion_n and_o so_o to_o keep_v it_o in_o circulation_n it_o can_v get_v no_o great_a heat_n there_o since_o it_o want_v spirit_n to_o ferment_n with_o it_o but_o i_o only_o mean_v that_o consider_v the_o substance_n and_o dimension_n of_o the_o muscular_a part_n of_o the_o heart_n and_o that_o small_a portion_n of_o blood_n contain_v in_o the_o artery_n disperse_v through_o it_o that_o that_o blood_n acquire_v a_o great_a heat_n than_o that_o quantity_n of_o blood_n do_v in_o another_o part_n that_o be_v not_o in_o motion_n but_o there_o be_v beside_o muscular_a part_n many_o bowel_n considerable_a internal_a part_n in_o a_o man_n body_n in_o which_o a_o great_a number_n of_o blood_n vessel_n be_v distribute_v it_o perhaps_o will_v be_v ask_v whether_o fermentation_n be_v carry_v on_o in_o these_o too_o to_o which_o i_o answer_v that_o animal_n spirit_n and_o arterial_a blood_n be_v either_o mediate_o or_o immediate_o lay_v down_o in_o they_o all_o there_o must_v needs_o be_v a_o fermentation_n which_o be_v prove_v upon_o such_o premise_n by_o what_o i_o have_v already_o say_v there_o be_v no_o need_n i_o shall_v repeat_v it_o again_o but_o since_o anatomist_n have_v not_o as_o yet_o discover_v nerve_n to_o be_v distribute_v through_o the_o liver_n although_o blood_n be_v communicate_v to_o it_o by_o the_o vena_fw-la porta_n which_o supply_v the_o office_n of_o a_o artery_n to_o the_o liver_n it_o perhaps_o may_v be_v doubt_v whether_o fermentation_n be_v carry_v on_o after_o the_o same_o manner_n there_o and_o consequent_o whether_o the_o office_n of_o the_o liver_n be_v perform_v by_o fermentation_n or_o not_o that_o it_o be_v i_o shall_v show_v hereafter_o and_o also_o how_o the_o gland_n in_o that_o part_n be_v supply_v with_o spirit_n from_o what_o i_o have_v hitherto_o say_v it_o appear_v what_o be_v necessary_a to_o continue_v the_o heat_n of_o the_o blood_n and_o also_o what_o be_v the_o cause_n of_o it_o for_o first_o it_o be_v necessary_a that_o the_o animal_n spirit_n and_o blood_n blood_n shall_v be_v in_o a_o continual_a circulation_n that_o be_v forcible_o drive_v together_o their_o particle_n may_v be_v intimare_o mix_v one_o with_o another_o and_o second_o that_o the_o animal_n spirit_n shall_v be_v ground_n betwixt_o the_o part_n of_o the_o mass_n of_o blood_n that_o they_o may_v be_v thereby_o rarify_v and_o expanded_a and_o their_o particle_n put_v into_o a_o swift_a motion_n and_o three_o it_o be_v requisite_a that_o the_o animal_n spirit_n shall_v be_v of_o a_o oily_a sulphureous_a volatile_a temper_n that_o be_v more_o easy_o rarify_v and_o expanded_a they_o may_v be_v present_o put_v into_o motion_n and_o cause_v the_o whole_a mass_n to_o ferment_n have_v then_o explain_v the_o heat_n of_o the_o blood_n and_o prove_v it_o agreeable_a to_o these_o circumstance_n i_o be_o for_o the_o reason_n before_o mention_v persuade_v to_o believe_v that_o the_o heat_n of_o the_o blood_n thus_o proceed_v from_o fermentation_n of_o the_o use_n of_o the_o lung_n for_o as_o much_o as_o appear_v from_o the_o book_n of_o several_a learned_a man_n the_o use_v of_o the_o lung_n have_v not_o be_v hitherto_o indisputable_a no_o more_o than_o the_o use_v of_o other_o part_n for_o as_o there_o be_v several_a opinion_n concern_v other_o so_o there_o be_v no_o less_o dispute_n about_o this_o whilst_o some_o will_v have_v it_o to_o be_v only_o a_o sort_n of_o fan_n to_o cool_v and_o air_n the_o blood_n and_o other_o that_o it_o be_v design_v to_o kindle_v and_o put_v the_o blood_n into_o a_o flame_n by_o continual_o supply_v it_o with_o nitre_n whether_o of_o these_o be_v most_o probable_a may_v easy_o be_v gather_v by_o consider_v the_o effect_n that_o air_n have_v upon_o we_o for_o since_o the_o air_n be_v continual_o draw_v in_o and_o thrust_v out_o again_o in_o respiration_n any_o one_o that_o do_v but_o know_v what_o effect_n it_o have_v upon_o himself_o can_v be_v ignorant_a of_o the_o use_n of_o the_o lung_n in_o respect_n of_o the_o heat_n of_o the_o blood_n evident_o find_v himself_o cool_v by_o it_o and_o if_o any_o one_o that_o by_o daily_a experience_n find_v that_o it_o cool_v he_o can_v conclude_v thence_o that_o it_o kindle_v and_o promote_v the_o heat_n of_o the_o blood_n he_o may_v be_v please_v with_o his_o notion_n but_o no_o body_n else_o will_v with_o such_o as_o contradict_v self-evident_a truth_n but_o that_o it_o may_v appear_v how_o far_o the_o lung_n may_v be_v say_v to_o be_v a_o fan_n or_o ventilabrum_fw-la to_o the_o blood_n and_o whether_o the_o air_n promote_v the_o heat_n of_o it_o or_o not_o i_o shall_v take_v this_o method_n first_o consider_v the_o use_n of_o the_o lung_n with_o respect_n to_o the_o rational_a soul_n and_o second_o with_o respect_n to_o the_o body_n the_o use_n of_o the_o lung_n with_o a_o more_o immediate_a respect_n to_o soul_n the_o soul_n appear_v to_o be_v nothing_o else_o but_o as_o a_o large_a capacious_a vessel_n endue_v with_o a_o cavity_n to_o contain_v a_o great_a quantity_n of_o air_n so_o that_o it_o perform_v the_o same_o office_n in_o the_o body_n as_o a_o pair_n of_o bellows_o to_o organ_n for_o as_o in_o organ_n the_o bellows_o supply_v pipe_n of_o different_a size_n with_o air_n and_o that_o be_v drive_v through_o they_o produces_z different_z sounds_z so_o the_o lung_n dilate_v and_o extend_v by_o the_o motion_n of_o the_o thorax_n and_o be_v full_a of_o air_n contract_n and_o according_o as_o the_o pharinx_n and_o its_o part_n be_v different_o modulate_v so_o the_o air_n forcible_o drive_v through_o they_o cause_v different_a voice_n in_o which_o action_n the_o lung_n seem_v chief_o to_o be_v a_o organ_n reason_v make_v on_o purpose_n to_o be_v serviceable_a to_o the_o rational_a soul_n to_o express_v all_o its_o conception_n and_o reason_n and_o to_o form_v voice_n or_o articulate_v sound_n to_o signify_v those_o notion_n contain_v in_o and_o apprehend_v by_o it_o that_o those_o thing_n which_o must_v otherwise_o remain_v in_o silence_n may_v be_v communicate_v to_o promote_v a_o mutual_a commerce_n and_o conversation_n among_o men._n but_o here_o some_o may_v ask_v if_o it_o be_v chief_o design_v to_o form_n articulate_v sound_n as_o it_o real_o seem_v to_o be_v why_o do_v we_o take_v our_o breath_n continual_o or_o why_o be_v our_o spirit_n constant_o consume_v by_o keep_v the_o part_n in_o a_o perpetual_a motion_n since_o sometime_o we_o use_v it_o very_o little_a for_o a_o long_a time_n to_o express_v any_o thing_n by_o one_o half_a of_o our_o life_n and_o the_o large_a too_o be_v pass_v away_o in_o silence_n to_o which_o it_o may_v be_v answer_v that_o it_o be_v necessary_a the_o lung_n because_o shall_v be_v in_o a_o constant_a and_o continual_a motion_n that_o they_o may_v be_v keep_v in_o readiness_n to_o express_v what_o and_o whenever_o we_o have_v a_o mind_n another_o reason_n be_v that_o since_o the_o cavity_n of_o the_o lung_n be_v they_o constant_o supply_v with_o a_o serous_a lympha_fw-la to_o moisten_v their_o coat_n and_o to_o moderate_v the_o acrimony_n of_o the_o air_n it_o be_v necessary_a there_o shall_v be_v a_o constant_a and_o continual_a respiration_n to_o carry_v that_o serous_a lympha_fw-la off_z which_o will_v otherwise_o stuff_v up_o the_o bladder_n of_o the_o lung_n that_o they_o will_v be_v incapable_a of_o receive_v air_n but_o every_o inspiration_n that_o superfluous_a moisture_n be_v mix_v and_o incorporate_v with_o the_o air_n be_v by_o every_o expiration_n carry_v off_o which_o prevent_v those_o ill_a consequence_n which_o will_v otherwise_o follow_v another_o reason_n why_o the_o lung_n ought_v to_o be_v always_o in_o body_n motion_n be_v lest_o they_o shall_v preter-natural_o affect_v and_o disturb_v the_o constitution_n of_o our_o body_n when_o put_v in_o motion_n as_o we_o have_v a_o mind_n to_o express_v ourselves_o for_o if_o the_o lung_n be_v at_o other_o time_n quiet_a and_o still_o our_o body_n will_v be_v put_v into_o such_o disorder_n by_o violent_a and_o sudden_a motion_n that_o we_o shall_v be_v as_o unfit_a to_o discourse_v of_o
the_o lung_n do_v it_o assist_v the_o dilation_n of_o the_o heart_n as_o i_o have_v show_v by_o stop_v the_o breath_n of_o any_o animal_n which_o for_o want_v of_o free_a circulation_n present_o die_v and_o not_o because_o the_o flame_n of_o the_o blood_n be_v by_o that_o mean_v extinguish_v for_o as_o long_o as_o the_o lung_n due_o perform_v respiration_n and_o the_o heart_n violent_o contract_v and_o drive_v the_o blood_n contain_v in_o its_o ventricles_n forcible_o out_o that_o motion_n of_o the_o blood_n be_v by_o a_o continue_a wave_a pressure_n decrease_v be_v enable_v by_o the_o assistance_n of_o the_o motion_n of_o the_o lung_n to_o dilate_v the_o ventricles_n of_o the_o heart_n with_o a_o sufficient_a quantity_n of_o blood_n to_o be_v force_v out_o the_o next_o contraction_n but_o as_o soon_o as_o the_o lung_n cease_v to_o assist_v the_o languid_a motion_n of_o the_o blood_n in_o dilate_v the_o ventricles_n it_o be_v not_o only_o less_o plentiful_o force_v successive_o thus_o into_o the_o ventricles_n of_o the_o heart_n but_o by_o a_o weak_a pressure_n of_o the_o content_n of_o they_o thrust_v out_o each_o succeed_a pulsation_n the_o arterial_a blood_n be_v less_o plentiful_o drive_v forward_o so_o that_o the_o whole_a mass_n circulate_v flower_n by_o degree_n and_o also_o the_o animal_n spirit_n be_v drive_v less_o violent_o into_o the_o muscle_n that_o supply_v of_o spirit_n separate_v in_o the_o cortical_a part_n of_o the_o brain_n be_v not_o so_o powerful_o thirst_n after_o by_o a_o equal_a succession_n of_o matter_n the_o fermentation_n in_o the_o gland_n be_v weak_a and_o consequent_o the_o follow_a contraction_n gradual_o decline_v both_o in_o number_n and_o vigour_n till_o at_o the_o last_o they_o renew_a cease_v but_o if_o before_o the_o circulation_n of_o the_o blood_n be_v quite_o stop_v that_o animal_n be_v again_o permit_v to_o breath_n the_o contractive_a force_n of_o the_o lung_n drive_v blood_n more_o forcible_o into_o the_o left_a cavity_n of_o the_o heart_n so_o that_o the_o next_o pulsation_n a_o great_a quantity_n of_o blood_n be_v force_v into_o the_o artery_n which_o make_v a_o more_o considerable_a protrusion_n of_o blood_n into_o the_o muscular_a gland_n and_o also_o of_o spirit_n through_o the_o nerve_n by_o which_o mean_n the_o thorax_n contract_v more_o violent_o force_v the_o blood_n in_o great_a quantity_n into_o the_o left_a ventricle_n of_o the_o heart_n and_o the_o motion_n of_o the_o heart_n at_o the_o same_o time_n increase_v raise_v circulation_n to_o its_o natural_a force_n by_o squeeze_v blood_n forward_o into_o the_o right_n and_o so_o successive_o from_o hence_o it_o appear_v that_o the_o blood_n be_v force_v into_o the_o ventricles_n of_o the_o heart_n by_o the_o help_n of_o the_o lung_n for_o if_o when_o the_o motion_n of_o the_o lung_n be_v obstruct_v the_o systole_n and_o diastole_n of_o the_o heart_n cease_v in_o a_o short_a time_n it_o must_v needs_o follow_v that_o it_o be_v in_o some_o measure_n preserve_v in_o that_o motion_n by_o they_o and_o it_o be_v further_o prove_v because_o the_o motion_n of_o the_o heart_n do_v not_o only_o soon_o stop_v when_o respiration_n cease_v but_o also_o because_o it_o be_v increase_v by_o a_o renew_a respiration_n and_o any_o one_o that_o will_v be_v further_o satisfy_v of_o the_o truth_n of_o it_o let_v he_o hold_v his_o breath_n a_o considerable_a time_n and_o he_o will_v find_v his_o pulse_n gradual_o decay_v which_o be_v again_o renew_a by_o reiterated_a breathe_v but_o though_o from_o hence_o it_o may_v appear_v that_o unborn_a the_o motion_n of_o the_o heart_n be_v promote_v by_o the_o assistance_n of_o the_o lung_n yet_o it_o perhaps_o may_v be_v a_o question_n how_o this_o defect_n be_v supply_v in_o unborn_a infant_n and_o how_o their_o blood_n circulate_v since_o than_o their_o lung_n do_v not_o perform_v the_o office_n of_o respiration_n to_o which_o i_o answer_v that_o in_o a_o infant_n before_o birth_n the_o placenta_n supply_v that_o defect_n for_o that_o additional_a force_n which_o the_o infant_n blood_n receive_v from_o the_o motion_n of_o nourishment_n violent_o force_v into_o the_o umbilical_a vessel_n by_o the_o pulsation_n of_o those_o artery_n that_o separate_v it_o from_o the_o mother_n blood_n in_o the_o womb_n do_v prove_v equivalent_a and_o supply_v the_o office_n of_o the_o other_o but_o as_o soon_o as_o the_o circulation_n of_o the_o blood_n cease_v to_o be_v promote_v by_o a_o sepaparation_n and_o protrusion_n of_o that_o juice_n it_o immediate_o if_o unborn_a die_v and_o after_o it_o be_v bear_v have_v a_o continual_a necessity_n of_o breathe_v as_o long_o as_o it_o live_v where_o it_o be_v to_o be_v note_v that_o as_o in_o one_o that_o breathe_v the_o lung_n more_o immediate_o assist_v the_o left_a ventricle_n so_o in_o one_o unborn_a the_o placenta_n more_o immediate_o promote_v the_o dilation_n of_o the_o right_n now_o although_o it_o from_o hence_o appear_v that_o the_o motion_n of_o the_o heart_n be_v promote_v by_o the_o reciprocal_a motion_n of_o the_o lung_n yet_o it_o do_v not_o whole_o depend_v upon_o it_o for_o if_o it_o do_v the_o motion_n of_o the_o heart_n will_v as_o sudden_o stop_v as_o that_o of_o the_o lung_n but_o since_o it_o do_v but_o partly_o depend_v upon_o it_o circulation_n decline_v by_o degree_n upon_o the_o stop_n of_o it_o but_o that_o it_o may_v be_v better_o understand_v how_o the_o lung_n promote_v circulation_n i_o shall_v next_o show_v that_o the_o sanguiferous_a vessel_n in_o the_o lung_n be_v not_o only_o contract_v by_o the_o contraction_n of_o the_o thorax_n but_o also_o in_o every_o inspiration_n and_o since_o it_o be_v know_v that_o the_o bladder_n of_o the_o lung_n be_v encompass_v about_o with_o the_o small_a twig_n and_o minute_n ramification_n of_o sanguiferous_a vessel_n every_o systole_n of_o the_o right_a ventricle_n of_o the_o heart_n these_o must_v needs_o be_v fill_v and_o distend_v with_o blood_n and_o if_o so_o consequent_o that_o blood_n must_v needs_o be_v force_v by_o the_o contraction_n of_o the_o thorax_n through_o the_o vena_fw-la arteriosa_fw-la with_o a_o considerable_a force_n and_o so_o be_v drive_v into_o the_o left_a ventricle_n of_o the_o heart_n with_o more_o case_n where_o we_o may_v by_o the_o way_n take_v notice_n that_o the_o blood_n in_o the_o arteria_fw-la venosa_fw-la from_o the_o orifice_n of_o the_o right_a ventricle_n be_v not_o only_o by_o that_o mean_v thrust_v into_o the_o minute_n vessel_n of_o the_o lung_n more_o easy_o but_o also_o the_o blood_n that_o be_v to_o be_v force_v forward_o by_o the_o next_o pulsation_n be_v more_o ready_o receive_v by_o the_o vena_fw-la arteriosa_fw-la and_o the_o ventricle_n more_o easy_o contract_v when_o the_o vessel_n of_o the_o lung_n be_v thus_o empty_v by_o a_o contraction_n of_o the_o thorax_n than_o if_o they_o be_v distend_v that_o subsequent_a matter_n in_o the_o depend_v part_n be_v receive_v and_o drive_v after_o it_o with_o less_o difficulty_n the_o resistance_n that_o distend_v vessel_n will_v make_v to_o the_o egress_n of_o it_o be_v thus_o prevent_v by_o the_o help_n of_o the_o lung_n that_o the_o blood_n be_v thus_o force_v out_o of_o the_o lung_n into_o the_o ventricle_n of_o the_o heart_n be_v not_o only_o evident_a from_o reason_n but_o also_o experience_n for_o in_o violent_a cough_n where_o the_o lung_n be_v almost_o in_o a_o continual_a contraction_n the_o blood_n be_v more_o violent_o drive_v into_o the_o habit_n of_o the_o body_n that_o it_o be_v force_v into_o the_o face_n visible_o appear_v and_o that_o it_o also_o flow_v into_o the_o habit_n of_o the_o body_n be_v evident_a in_o people_n that_o be_v let_v blood_n which_o by_o cough_v much_o be_v plentiful_o force_v out_o of_o the_o orifice_n and_o that_o the_o contraction_n of_o the_o lung_n in_o cough_v can_v no_o otherwise_o force_v the_o blood_n into_o the_o habit_n of_o the_o body_n but_o through_o the_o left_a ventricle_n be_v very_o plain_a and_o last_o that_o not_o only_o the_o left_a ventricle_n be_v by_o that_o mean_n further_o dilate_v but_o consequent_o the_o right_a by_o the_o assistance_n of_o the_o lung_n be_v manifest_a because_o circulation_n be_v present_o quicken_v by_o cough_v so_o that_o this_o one_o phaenomenon_n prove_v all_o that_o i_o have_v assert_v concern_v the_o use_n of_o the_o lung_n with_o respect_n to_o the_o heart_n but_o it_o may_v here_o also_o be_v question_v how_o the_o lung_n supply_v the_o heart_n in_o inspiration_n when_o the_o cavity_n of_o the_o lung_n be_v dilate_v to_o which_o i_o answer_v that_o though_o the_o cavity_n of_o the_o lung_n be_v dilate_v in_o inspiration_n yet_o the_o bladder_n which_o be_v swell_v and_o dilate_a with_o air_n even_o then_o make_v a_o moderate_a pressure_n upon_o and_o consequent_o a_o contraction_n of_o the_o blood_n vessel_n that_o be_v