open_a so_o as_o to_o convey_v a_o sufficient_a quantity_n of_o spirit_n the_o motion_n be_v continual_a and_o without_o intermission_n the_o reason_n of_o the_o difference_n will_v easy_o appear_v if_o we_o do_v but_o take_v notice_n how_o when_o a_o vein_n be_v open_v the_o blood_n run_v out_o continual_o without_o cease_v or_o intermission_n but_o if_o a_o artery_n be_v open_v it_o gush_v out_o with_o intermission_n answerable_a to_o the_o diastole_n of_o the_o heart_n because_o the_o vein_n be_v always_o as_o a_o common_a cistern_n distend_v with_o blood_n and_o before_o they_o can_v be_v empty_v with_o a_o small_a orifice_n they_o be_v fill_v by_o the_o extremity_n but_o the_o blood_n be_v continual_o receive_v by_o the_o extremity_n of_o the_o vein_n and_o those_o extremity_n be_v furnish_v with_o valve_n to_o hinder_v it_o from_o regurgitation_n the_o artery_n be_v always_o keep_v more_o lank_a and_o empty_a and_o be_v not_o as_o the_o vein_n distend_v with_o superfluous_a blood_n so_o that_o it_o only_o flow_v out_o of_o they_o when_o they_o be_v distend_v upon_o violent_a systole_n of_o the_o heart_n in_o like_a manner_n that_o part_n of_o the_o brain_n that_o furnish_v the_o nerve_n serve_v to_o voluntary_a motion_n with_o spirit_n be_v like_o a_o common_a cistern_n full_a of_o spirit_n and_o when_o vent_n be_v give_v the_o pore_n be_v open_v according_a to_o our_o appetite_n the_o spirit_n be_v thrust_v forth_o in_o one_o constant_a course_n but_o the_o muscle_n serve_v to_o involuntary_a motion_n be_v in_o continual_a action_n do_v so_o drain_v their_o storehouse_n as_o to_o keep_v it_o more_o flaccid_a and_o empty_a so_o that_o the_o animal_n spirit_n as_o they_o be_v prepare_v be_v continual_o wave_v through_o their_o proper_a pore_n and_o as_o one_o wave_n follow_v another_o so_o one_o contraction_n perpetual_o succeed_v the_o subtle_a liquor_n be_v according_a to_o the_o same_o rule_v prepare_v in_o the_o gland_n and_o thrust_v out_o through_o the_o fiber_n some_o of_o the_o muscle_n design_v for_o involuntary_a motion_n be_v in_o some_o measure_n subject_n to_o our_o will_n so_o that_o it_o lie_v in_o our_o power_n to_o retardate_v or_o quicken_v the_o succession_n of_o their_o contraction_n but_o not_o total_o to_o obstruct_v or_o hinder_v they_o as_o the_o muscle_n serve_v to_o respiration_n the_o reason_n of_o which_o be_v this_o the_o pore_n of_o the_o brain_n lead_v to_o the_o nerve_n which_o convey_v spirit_n to_o these_o muscle_n appetite_n be_v so_o frame_v that_o they_o carry_v spirit_n to_o they_o as_o to_o the_o other_o muscle_n serve_v to_o involuntary_a motion_n in_o a_o competent_a quantity_n but_o these_o pore_n differ_v from_o those_o for_o as_o much_o as_o these_o have_v such_o a_o organic_n motion_n as_o to_o contract_v or_o dilate_v according_a to_o our_o appetite_n we_o can_v by_o a_o constriction_n close_o up_o these_o so_o as_o to_o deny_v a_o passage_n for_o animal_n spirit_n sufficient_a to_o prepare_v a_o quantity_n of_o the_o subtle_a liquor_n to_o cause_v due_a contraction_n of_o the_o muscle_n till_o by_o degree_n they_o increase_v to_o such_o a_o great_a quantity_n and_o distend_v their_o receptacle_n so_o long_o that_o those_o be_v no_o long_a capable_a of_o receive_v more_o till_o that_o force_n which_o drive_v they_o violent_o into_o the_o receptacle_n overcome_v the_o constrictive_a faculty_n of_o the_o pore_n and_o then_o the_o spirit_n against_o our_o will_n break_v forth_o and_o flow_v violent_o into_o the_o musculous_a gland_n it_o be_v easy_o note_v that_o after_o we_o have_v hold_v our_o breath_n a_o long_a time_n the_o first_o contraction_n be_v as_o if_o two_o or_o three_o be_v join_v together_o without_o intermission_n i_o mean_v so_o long_o continue_v which_o be_v sufficient_a to_o prove_v what_o i_o have_v say_v of_o the_o muscle_n serve_v to_o respiration_n for_o when_o by_o a_o constriction_n of_o the_o pore_n the_o spirit_n which_o ought_v to_o flow_v out_o be_v keep_v in_o and_o heap_v up_o in_o their_o receptacle_n and_o two_o or_o three_o contraction_n be_v by_o that_o mean_v hinder_v that_o receptacle_n become_v like_o a_o common_a cistern_n and_o as_o soon_o as_o the_o pore_n be_v force_v open_a the_o spirit_n run_v out_o cause_n long_o continue_v contraction_n till_o that_o store_n be_v spend_v and_o then_o they_o wave_v through_o as_o before_o the_o interruption_n what_o i_o have_v hitherto_o say_v may_v be_v sufficient_a to_o prove_v my_o hypothesis_n reasonable_a but_o to_o illustrate_v it_o a_o little_a more_o i_o shall_v explain_v some_o of_o the_o phaenomena_n about_o muscular_a motion_n and_o give_v sufficient_a reason_n for_o they_o agreeable_a to_o my_o hypothesis_n common_a experience_n tell_v we_o that_o old_a people_n hand_n who_o spirit_n be_v flat_a and_o weak_a be_v most_o usual_o subject_a to_o a_o tremble_v of_o their_o head_n or_o hand_n the_o reason_n of_o which_o be_v this_o the_o fermentation_n in_o the_o glandule_n be_v too_o low_a and_o weak_a and_o do_v not_o subtilise_v a_o sufficient_a quantity_n of_o the_o say_a liquor_n to_o keep_v the_o muscle_n in_o a_o constant_a motion_n the_o reason_n why_o a_o sufficient_a quantity_n of_o liquor_n be_v not_o prepare_v be_v plain_a for_o though_o their_o appetite_n and_o desire_n be_v strong_a enough_o and_o endeavour_n to_o open_v and_o dilate_v the_o pore_n of_o the_o brain_n yet_o when_o the_o spirit_n be_v weak_a it_o be_v a_o sign_n few_o be_v separate_v from_o the_o blood_n and_o if_o few_o be_v separate_v they_o can_v flow_v plentiful_o into_o the_o nerve_n be_v the_o pore_n never_o so_o wide_a this_o confirm_v the_o reason_n i_o have_v give_v why_o the_o systole_n of_o the_o heart_n be_v interrupt_v with_o constant_a diastole_n for_o the_o storehouse_n which_o supply_v it_o be_v always_o keep_v empty_a by_o reason_n of_o the_o constant_a efflux_n of_o spirit_n and_o in_o old_a people_n the_o storehouse_n which_o furnish_v the_o nerve_n serve_v to_o voluntary_a motion_n with_o spirit_n be_v keep_v empty_a because_o few_o spirit_n be_v separate_v from_o the_o blood_n and_o as_o they_o be_v separate_v they_o be_v continual_o spend_v by_o a_o constant_a distribution_n of_o they_o to_o prepare_v nourishment_n in_o the_o musculous_a gland_n so_o that_o when_o the_o pore_n be_v open_v wide_o for_o voluntary_a motion_n for_o want_v of_o a_o sufficient_a stock_n they_o can_v flow_v out_o in_o a_o constant_a and_o equal_a proportion_n but_o as_o they_o be_v separate_v they_o wave_v through_o those_o pore_n that_o be_v most_o ready_a to_o receive_v they_o the_o motion_n indeed_o be_v not_o interrupt_v with_o such_o perfect_a intermission_n because_o this_o storehouse_n be_v not_o so_o clear_o drain_v but_o there_o be_v a_o perfect_a remission_n because_o the_o stock_n be_v not_o so_o copious_a as_o in_o young_a and_o lusty_a people_n to_o yield_v constant_a supply_n moreover_o when_o the_o spirit_n be_v weak_a it_o be_v a_o sign_n that_o the_o blood_n be_v much_o depauperate_v and_o decline_v from_o its_o natural_a state_n and_o then_o there_o be_v more_o need_n for_o strong_a spirit_n to_o raise_v the_o fermentation_n in_o the_o gland_n and_o to_o subtilise_v the_o liquor_n upon_o which_o account_n when_o the_o spirit_n be_v weak_a the_o disadvantage_n must_v needs_o be_v the_o great_a hence_o may_v be_v deduce_v a_o reason_n why_o when_o our_o spirit_n be_v low_a and_o almost_o spend_v though_o our_o appetite_n be_v strong_a we_o can_v perform_v strong_a action_n from_o hence_o it_o may_v be_v prove_v that_o there_o be_v something_o prepare_v in_o these_o gland_n by_o the_o animal_n spirit_n which_o be_v incapable_a of_o enter_v into_o the_o fiber_n till_o prepare_v for_o whether_o the_o spirit_n be_v weak_a or_o strong_a there_o be_v a_o sufficient_a quantity_n of_o arterial_a juice_n lay_v down_o in_o the_o gland_n though_o it_o be_v not_o make_v capable_a of_o pass_v into_o the_o fiber_n but_o as_o it_o be_v prepare_v according_o as_o the_o spirit_n be_v more_o or_o less_o in_o quantity_n strong_a or_o weak_a i_o have_v know_v woman_n who_o seem_v healthful_a explain_v and_o of_o a_o sanguine_a complexion_n who_o hand_n will_v when_o they_o be_v about_o any_o moderate_a exercise_n tremble_v as_o if_o paralytic_a for_o the_o mass_n of_o blood_n be_v a_o little_a more_o than_o usual_o deprave_v and_o degenerate_v from_o its_o balsamic_a and_o sulphureous_a into_o a_o more_o crude_a and_o phlegmatic_a state_n be_v unapt_a for_o fermentation_n so_o that_o the_o animal_n spirit_n be_v not_o able_a easy_o to_o prepare_v a_o sufficient_a quantity_n of_o the_o aforesaid_a subtle_a liquor_n to_o keep_v the_o muscle_n in_o a_o constant_a motion_n be_v force_v to_o do_v it_o by_o a_o unequal_a influx_n just_a as_o a_o horse_n set_v to_o draw_v too_o great_a a_o burden_n be_v force_v by_o many_o reiterated_a draught_n
a_o treatise_n of_o the_o reason_n of_o muscular_a motion_n or_o the_o efficient_a cause_n of_o the_o contraction_n of_o a_o muscle_n wherein_o most_o of_o the_o phaenomena_n about_o muscular_a motion_n be_v explain_v by_o richard_n boulton_n of_o the_o city_n of_o chester_n medicine_n proficiens_fw-la 〈◊〉_d 〈◊〉_d 〈◊〉_d 〈◊〉_d 〈◊〉_d london_n print_v by_o a._n and_o j._n churchill_n at_o the_o black_a swan_n in_o pater-noster-row_n 1697._o tractatum_fw-la hunc_fw-la cui_fw-la titulus_fw-la a_o treatise_n of_o the_o reason_n of_o muscular_a motion_n etc._n etc._n dignum_fw-la censemus_fw-la quî_fw-la imprimatur_fw-la samuel_n collins_n praeses_fw-la thomas_n burwell_n sen._n richard_n torless_a william_n dawes_n thomas_n gill_n censor_n datum_n in_o comitiis_fw-la censoriis_fw-la ex_fw-la aedibus_fw-la collegii_fw-la nostri_fw-la sept._n 11._o 1696._o to_o the_o most_o learned_a and_o ever_o honour_a dr._n collins_n precedent_n dr._n thomas_n burwell_n dr._n richard_n torlesse_a dr._n william_n dawes_n dr._n thomas_n gill._n censor_n of_o the_o college_n of_o physician_n this_o treatise_n be_v humble_o dedicate_v by_o your_o most_o faithful_a and_o obedient_a servant_n r._n boulton_n to_o the_o reader_n i_o have_v examine_v this_o treatise_n with_o the_o strict_a reason_n that_o i_o be_o master_n of_o and_o it_o appear_v to_o i_o reasonable_a in_o every_o particular_a but_o i_o be_o altogether_o desirous_a of_o truth_n and_o will_v not_o out_o of_o any_o fond_a opinion_n of_o my_o own_o hypothesis_n receive_v it_o soon_o than_o another_o man_n i_o be_o most_o incline_v to_o suspect_v whatever_o be_v a_o faetus_fw-la of_o my_o own_o brain_n if_o it_o may_v be_v any_o way_n serviceable_a to_o other_o i_o have_v my_o desire_n the_o content_n the_o usefulness_n of_o muscular_a motion_n as_o it_o tend_v to_o the_o maintenance_n of_o life_n page_z 1_o with_o respect_n to_o the_o soul_n and_o the_o animal_n function_n p._n 3_o dr._n willis_n opinion_n examine_v p._n 7_o mr._n cowper_n opinion_n examine_v p._n 20_o dr._n ridley_n opinion_n examine_v p._n 30_o the_o structure_n of_o a_o muscle_n p._n 40_o the_o formal_a cause_n of_o the_o contraction_n of_o a_o muscle_n p._n 41_o vessel_n implant_v into_o a_o muscle_n p._n 42_o their_o distribution_n p._n 43_o and_o termination_n in_o small_a glandule_n p._n 45_o what_o a_o gland_n be_v p._n 47_o the_o use_n of_o the_o nerve_n p._n 52_o and_o artery_n insert_v in_o the_o gland_n p._n 53_o to_o prepare_v a_o subtle_a liquor_n ibid._n the_o use_n of_o it_o p._n 54_o the_o reason_n of_o tonick_n motion_n p._n 59_o of_o local_a motion_n p._n 60_o the_o use_n of_o the_o lymphduct_n p._n 68_o the_o nature_n of_o the_o liquor_n and_o the_o manner_n of_o its_o preparation_n p._n 69_o by_o fermentation_n p._n 70_o prove_v p._n 72_o the_o reason_n of_o involuntary_a motion_n p._n 82_o why_o the_o systole_n of_o the_o heart_n be_v interrupt_v with_o frequent_a diastole_n p._n 86_o why_o the_o muscle_n serve_v to_o respiration_n be_v in_o some_o measure_n subject_a to_o our_o appetite_n p._n 90_o some_o phaenomena_n about_o muscular_a motion_n explain_v p._n 93_o the_o reason_n of_o convulsion_n p._n 103_o of_o the_o palpitation_n of_o the_o heart_n p._n 109_o of_o the_o cramp_n p._n 111_o of_o the_o subsultus_fw-la tendinum_fw-la in_o fever_n p._n 113_o of_o spasmus_fw-la lynicus_n p._n 114_o of_o the_o reason_n of_o muscular_a motion_n or_o the_o efficient_a cause_n of_o the_o contraction_n of_o a_o muscle_n etc._n etc._n if_o we_o consider_v the_o usefulness_n of_o muscular_a motion_n life_n with_o respect_n to_o a_o individual_a and_o that_o either_o as_o it_o tend_v to_o the_o maintenance_n of_o life_n or_o the_o perfection_n of_o man_n that_o be_v with_o respect_n to_o the_o soul_n and_o the_o animal_n function_n it_o be_v the_o very_a spring_n upon_o which_o all_o our_o action_n both_o natural_a vital_a and_o animal_n whole_o depend_v by_o the_o assistance_n of_o muscular_a motion_n all_o the_o part_n of_o our_o body_n perform_v their_o particular_a office_n our_o food_n be_v prepare_v by_o mastication_n and_o convey_v to_o the_o stomach_n the_o concoct_v chymus_fw-la be_v thence_o expel_v into_o the_o intestine_n where_o the_o pure_a chyle_n be_v separate_v from_o the_o impure_a faeces_fw-la every_o peculiar_a liquor_n circulate_v through_o its_o distinct_a and_o proper_a vessel_n the_o chyle_n through_o its_o lacteal_v and_o the_o lympha_fw-la through_o its_o duct_n and_o the_o mass_n of_o blood_n be_v disribute_v through_o the_o artery_n that_o all_o the_o part_n of_o the_o body_n both_o principal_a and_o subsubservient_fw-fr noble_a and_o ignoble_a may_v receive_v their_o proper_a liquor_n in_o a_o word_n it_o be_v by_o this_o very_a action_n of_o muscular_a motion_n that_o 〈◊〉_d 〈◊〉_d 〈◊〉_d 〈◊〉_d 〈◊〉_d if_o we_o respect_v the_o animal_n function_n function_n they_o so_o much_o depend_v upon_o muscular_a motion_n that_o when_o the_o heart_n cease_v to_o move_v all_o the_o faculty_n of_o the_o soul_n be_v present_o extinguish_v the_o faculty_n of_o the_o soul_n be_v not_o only_o dependent_a on_o involuntary_a but_o also_o voluntary_a motion_n without_o which_o both_o our_o eye_n and_o ear_n will_v be_v unfit_a to_o receive_v external_a object_n and_o man_n will_v be_v endow_v with_o a_o sensitive_a and_o rational_a soul_n to_o no_o purpose_n our_o outward_a sense_n will_v in_o vain_a receive_v external_a object_n unless_o we_o have_v a_o intelligent_a faculty_n in_o vain_a shall_v we_o understand_v unless_o we_o have_v reason_n to_o distinguish_v good_a from_o evil_n that_o we_o may_v desire_v the_o one_o and_o contemn_v the_o other_o in_o vain_a also_o will_v be_v the_o dictate_v of_o our_o reason_n if_o we_o have_v not_o a_o loco-motive_n faculty_n to_o pursue_v those_o thing_n we_o desire_v and_o to_o flee_v from_o those_o thing_n which_o we_o be_v willing_a to_o avoid_v but_o by_o muscular_a motion_n the_o dictate_v of_o our_o reason_n according_o as_o they_o be_v bias_v by_o our_o appetite_n be_v put_v into_o action_n and_o the_o intimate_a result_v of_o all_o our_o faculty_n be_v bring_v to_o light_n muscular_a motion_n be_v the_o very_a index_n animi_fw-la by_o which_o the_o temper_n and_o disposition_n of_o the_o animal_n faculty_n be_v make_v evident_a it_o be_v the_o ultimate_a result_n of_o our_o most_o secret_a thought_n and_o of_o our_o will_n so_o that_o if_o we_o weigh_v but_o the_o mutual_a dependence_n of_o all_o the_o part_n of_o a_o man_n body_n part_n there_o be_v no_o reason_n that_o a_o muscle_n shall_v be_v term_v a_o ignoble_a part_n since_o by_o the_o loss_n of_o a_o single_a one_o either_o the_o natural_a vital_a or_o animal_n faculty_n be_v in_o some_o measure_n vitiate_v the_o stomach_n the_o liver_n the_o spleen_n the_o lung_n etc._n etc._n be_v all_o subordinate_a and_o subservient_fw-fr to_o the_o principle_n faculty_n of_o the_o soul_n in_o as_o much_o as_o they_o by_o their_o mutual_a symbolum_n prepare_v the_o pabulum_fw-la of_o the_o animal_n spirit_n but_o the_o muscle_n design_v for_o motion_n especial_o voluntary_a in_o as_o much_o as_o the_o most_o perfect_a and_o refine_a action_n of_o the_o soul_n be_v perform_v and_o express_v by_o muscular_a motion_n be_v of_o a_o more_o noble_a use_n the_o perfection_n of_o man_n consist_v more_o immediate_o on_o the_o energy_n and_o execution_n of_o the_o principal_a faculty_n of_o the_o soul_n than_o in_o the_o subordinate_a and_o subservient_fw-fr faculty_n both_o natural_a and_o vital_a for_o as_o much_o as_o the_o life_n and_o perfection_n of_o man_n so_o much_o depend_v on_o muscular_a motion_n i_o shall_v inquire_v into_o the_o efficient_a cause_n of_o it_o but_o before_o i_o propose_v my_o own_o hypothesis_n it_o be_v necessary_a that_o i_o first_o confute_v what_o have_v hitherto_o be_v say_v on_o this_o subject_n nevertheless_o because_o it_o will_v be_v too_o tedious_a to_o examine_v the_o opinion_n of_o so_o many_o author_n i_o will_v only_o show_v the_o error_n of_o two_o or_o three_o of_o the_o late_a and_o most_o considerable_a the_o most_o learned_a and_o famous_a dr._n willis_n conjecture_n examine_v that_o the_o spirit_n be_v convey_v to_o the_o tendon_n of_o a_o muscle_n and_o be_v there_o plentiful_o lay_v up_o as_o in_o a_o convenient_a storehouse_n which_o spirit_n be_v of_o a_o agile_a and_o elastic_a nature_n as_o far_o as_o they_o be_v able_a and_o be_v permit_v always_o endeavour_v to_o expand_v themselves_o and_o that_o when_o a_o instinct_n to_o perform_v muscular_a motion_n be_v carry_v from_o the_o brain_n or_o cerebell_n to_o this_o common_a storehouse_n they_o present_o leap_v out_o of_o the_o tendinous_a into_o the_o fleshy_a fiber_n where_o they_o meet_v with_o active_a principle_n of_o another_o nature_n supply_v by_o the_o mass_n of_o blood_n which_o two_o strong_o &_o mutual_o ferment_v stuff_v up_o and_o tumifie_v the_o fleshy_a fiber_n whence_o proceed_v the_o
say_v unferment_v succus_fw-la nutritius_n which_o liquor_n thus_o compound_v and_o prepare_v be_v drive_v by_o a_o succession_n of_o matter_n through_o its_o proper_a passage_n into_o the_o cavity_n of_o the_o fibrous_a cell_n the_o remain_v and_o more_o crude_a part_n of_o the_o succus_fw-la nutritius_n be_v receive_v together_o with_o the_o blood_n and_o carry_v back_o to_o the_o heart_n this_o liquor_n after_o this_o manner_n convey_v to_o the_o cavity_n of_o the_o fiber_n it_o do_v as_o it_o pass_v and_o be_v thrust_v through_o according_a to_o the_o continual_a law_n of_o circulation_n give_v nourishment_n to_o the_o part_n and_o be_v thence_o receive_v by_o the_o lymphduct_n thus_o i_o conceive_v it_o be_v continual_o prepare_v in_o the_o glandule_n and_o circulate_v through_o the_o carnous_a fiber_n of_o all_o the_o part_n of_o the_o body_n whilst_o motion_n cease_v in_o a_o moderate_a quantity_n so_o that_o the_o lymphduct_n be_v capable_a of_o receive_v it_o and_o thereby_o prevent_v the_o preternatural_a repletion_n of_o the_o fiber_n to_o prove_v what_o i_o have_v hitherto_o say_v beside_o the_o verisimilitude_n the_o thing_n carry_v with_o it_o i_o can_v bring_v many_o argument_n to_o illustrate_v and_o to_o make_v it_o appear_v more_o plausible_a and_o evident_a but_o for_o brevity_n sake_n and_o to_o prevent_v unnecessary_a repetition_n i_o shall_v omit_v they_o here_o because_o they_o be_v to_o be_v mention_v hereafter_o i_o have_v give_v a_o brief_a account_n of_o the_o structure_n of_o a_o muscle_n as_o far_o as_o relate_v to_o my_o hypothesis_n and_o the_o use_v of_o the_o part_n as_o they_o serve_v to_o nutrition_n i_o now_o proceed_v to_o the_o efficient_a cause_n of_o muscular_a motion_n both_o voluntary_a and_o involuntary_a and_o first_o of_o the_o reason_n of_o voluntary_a motion_n that_o voluntary_a motion_n do_v depend_v upon_o the_o dictate_v of_o the_o soul_n and_o be_v the_o result_n of_o its_o faculty_n but_o more_o immediate_o of_o our_o appetite_n be_v sufficient_o evince_v because_o it_o be_v instant_o perform_v according_a to_o our_o will._n where_o the_o soul_n be_v lodge_v how_o and_o after_o what_o manner_n it_o operate_v and_o what_o it_o be_v be_v most_o difficult_a to_o determine_v and_o be_v not_o design_v for_o our_o present_a enquiry_n but_o as_o it_o come_v under_o the_o consideration_n of_o the_o brain_n and_o its_o appendage_n i_o shall_v defer_v my_o thought_n of_o that_o till_o i_o have_v a_o further_a opportunity_n in_o the_o mean_a time_n that_o neither_o the_o soul_n nor_o any_o of_o its_o faculty_n be_v the_o immediate_a cause_n of_o muscular_a motion_n but_o operate_v by_o the_o mediation_n of_o the_o animal_n spirit_n will_v appear_v from_o what_o follow_v concern_v the_o reason_n of_o voluntary_a motion_n and_o that_o the_o office_n of_o the_o will_n be_v only_o to_o open_v and_o shut_v the_o pore_n of_o the_o brain_n by_o a_o organical_a motion_n as_o necessity_n require_v what_o this_o motion_n be_v and_o how_o it_o be_v perform_v and_o after_o what_o manner_n the_o dictate_v of_o the_o soul_n and_o of_o its_o faculty_n be_v put_v in_o action_n be_v reserve_v for_o its_o proper_a seat_n after_o what_o manner_n soever_o the_o soul_n exert_v its_o faculty_n and_o direct_v that_o subtle_a matter_n the_o animal_n spirit_n which_o be_v send_v through_o the_o branch_n of_o the_o nerve_n in_o great_a or_o less_o quatity_n according_a to_o our_o appetite_n to_o this_o or_o that_o part_n it_o be_v allow_v that_o when_o our_o body_n cease_v from_o motion_n and_o all_o our_o voluntary_a faculty_n be_v at_o quiet_a the_o pore_n and_o passage_n of_o the_o brain_n lead_v to_o the_o instrument_n of_o voluntary_a motion_n be_v lock_v or_o close_v up_o and_o then_o i_o suppose_v that_o the_o spirit_n moderate_o flow_v into_o each_o muscle_n do_v prepare_v so_o much_o of_o the_o subtle_a liquor_n aforementioned_a as_o be_v sufficient_a to_o nourish_v the_o part_n as_o it_o pass_v through_o '_o they_o but_o when_o the_o pore_n of_o the_o brain_n be_v open_v motion_n and_o unlock_v the_o animal_n spirit_n force_v by_o a_o continual_a succession_n of_o matter_n flow_v into_o all_o the_o branch_n of_o the_o nerve_n more_o plentiful_o and_o be_v lay_v down_o in_o the_o glandule_n raise_v a_o strong_a fermentation_n by_o which_o mean_v a_o great_a quantity_n of_o the_o subtle_a liquor_n be_v prepare_v and_o force_v into_o the_o fleshy_a fiber_n more_o copious_o and_o rather_o fast_o that_o it_o can_v be_v receive_v and_o evacuate_v by_o the_o lymphduct_n so_o that_o the_o fiber_n be_v all_o equal_o swell_v with_o its_o quantity_n consequent_o contract_v the_o muscle_n which_o be_v the_o cause_n of_o a_o tonick_n motion_n when_o these_o animal_n spirit_n be_v by_o a_o pressure_n and_o systole_n of_o the_o brain_n and_o succeed_a spirit_n send_v yet_o more_o plentiful_o into_o the_o nervous_a channel_n lead_v to_o the_o muscle_n to_o be_v contract_v than_o into_o those_o which_o be_v in_o motu_fw-la tonico_n or_o into_o the_o antagonist_n the_o passage_n and_o pore_n lead_v to_o those_o nerve_n be_v yet_o more_o expanded_a and_o open_v there_o be_v a_o great_a quantity_n of_o the_o subtle_a liquor_n prepare_v in_o the_o glandule_n and_o thrust_v out_o into_o the_o carnous_a fiber_n and_o their_o cell_n be_v more_o swell_v and_o dilate_a consequent_o there_o follow_v strong_a and_o more_o violent_a contraction_n of_o the_o muscle_n whence_o proceed_v local_a motion_n by_o the_o systole_n of_o the_o brain_n i_o do_v mean_v any_o other_o motion_n than_o what_o proceed_v from_o the_o pulsation_n of_o the_o artery_n distribute_v through_o that_o part._n that_o this_o motion_n only_o proceed_v from_o the_o pulsation_n of_o the_o artery_n imply_v that_o it_o be_v strong_a &_o drive_v the_o spirit_n through_o the_o brain_n into_o the_o nerve_n with_o great_a force_n than_o if_o it_o be_v real_o the_o motion_n of_o the_o brain_n itself_o the_o heart_n from_o whence_o the_o pulsation_n of_o the_o artery_n proceed_v be_v a_o strong_a and_o more_o compact_a part_n as_o to_o its_o substance_n than_o the_o brain_n if_o it_o be_v ask_v why_o this_o subtle_a liquor_n be_v not_o more_o easy_o force_v into_o the_o venous_a duct_n than_o into_o those_o that_o lead_v to_o the_o fibrous_a cell_n because_o the_o former_a be_v large_a i_o answer_v that_o the_o venous_a duct_n be_v so_o proportion_v that_o they_o may_v not_o be_v capable_a of_o receive_v all_o that_o be_v lay_v down_o by_o the_o nerve_n and_o artery_n on_o purpose_n that_o some_o subtle_a part_n may_v be_v continual_o drive_v into_o the_o fibrous_a cell_n and_o when_o by_o a_o more_o copious_a influx_n of_o animal_n spirit_n a_o strong_a fermention_n be_v raise_v in_o the_o glandule_n present_o the_o content_n swell_v up_o and_o be_v expanded_a so_o that_o the_o vein_n be_v not_o able_a to_o receive_v they_o as_o before_o more_o of_o that_o liquor_n be_v not_o only_o subtilise_v but_o force_v into_o the_o fiber_n as_o soon_o as_o according_a to_o our_o appetite_n the_o pore_n of_o the_o brain_n which_o convey_v spirit_n to_o the_o nerve_n lead_v to_o the_o contract_a muscle_n be_v shut_v more_o close_o up_o again_o and_o leave_v of_o to_o be_v dilate_v the_o animal_n spirit_n cease_v to_o flow_v more_o into_o the_o musculous_a glandule_n than_o be_v require_v to_o subtilise_v and_o prepare_v a_o sufficient_a quantity_n of_o nourishment_n for_o the_o fiber_n as_o in_o the_o antagonist_n then_o present_o the_o contraction_n cease_v to_o be_v carry_v on_o and_o the_o superfluous_a liquor_n heap_v up_o in_o the_o fiber_n be_v evacuate_v by_o the_o lymphduct_n here_o perhaps_o because_o i_o say_v in_o the_o forego_n paragraph_n answer_v the_o liquor_n heap_v up_o in_o the_o fiber_n be_v evacuate_v by_o the_o lymphduct_n it_o may_v be_v a_o question_n whether_o this_o liquor_n do_v all_o the_o time_n a_o muscle_n be_v contract_v constant_o flow_v through_o these_o cell_n into_o the_o lymphduct_n or_o whether_o it_o remain_v in_o the_o cell_n till_o motion_n be_v to_o cease_v and_o be_v not_o evacuate_v by_o the_o say_a duct_n till_o then_o i_o say_v it_o do_v continual_o run_v of_o by_o the_o lymphduct_n constant_o all_o the_o time_n a_o muscle_n be_v contract_v otherwise_o since_o as_o long_o as_o spirit_n be_v direct_v in_o a_o competent_a quantity_n to_o the_o contract_a muscle_n to_o keep_v up_o the_o dilation_n of_o the_o fiber_n they_o will_v present_o be_v incapable_a of_o receive_v it_o and_o it_o must_v needs_o regurgitate_v as_o it_o be_v prepare_v and_o in_o a_o great_a measure_n disturb_v circulation_n but_o to_o prevent_v many_o absurd_a consequence_n if_o it_o shall_v remain_v in_o the_o cell_n so_o long_o i_o affirm_v that_o it_o be_v constant_o force_v forward_o by_o a_o succession_n of_o matter_n and_o as_o it_o be_v force_v into_o
they_o become_v destitute_a of_o motion_n that_o the_o animal_n spirit_n simple_o spirit_n can_v cause_v the_o contraction_n of_o a_o muscle_n be_v prove_v because_o by_o a_o ligature_n on_o the_o descend_v trunk_n of_o the_o aorta_fw-mi the_o inferior_a part_n become_v destitute_a of_o motion_n for_o though_o the_o influx_n of_o the_o animal_n spirit_n be_v not_o hinder_v yet_o for_o want_v of_o arterial_a juice_n the_o matter_n requisite_a for_o the_o composition_n of_o this_o subtle_a liquor_n be_v not_o lay_v down_o in_o the_o glandule_n and_o the_o muscle_n the_o instrument_n of_o motion_n can_v contract_v without_o a_o efficient_a cause_n from_o what_o be_v contain_v in_o these_o two_o paragraph_n it_o appear_v that_o neither_o the_o animal_n spirit_n nor_o the_o arterial_a juice_n simple_o can_v cause_v the_o contraction_n of_o a_o muscle_n because_o when_o the_o animal_n spirit_n be_v hinder_v to_o flow_v into_o the_o glandule_n to_o subtilise_v and_o prepare_v the_o arterial_a juice_n it_o be_v not_o thin_a enough_o to_o be_v drive_v out_o into_o the_o fiber_n and_o though_o when_o the_o influx_n of_o the_o arterial_a juice_n be_v hinder_v the_o spirit_n be_v permit_v to_o flow_v in_o yet_o by_o reason_n of_o the_o small_a quantity_n of_o they_o they_o run_v through_o the_o fiber_n without_o distend_v '_o they_o that_o this_o arterial_a juice_n ought_v not_o spirit_n nay_o can_v pass_v into_o the_o fibrous_a cell_n till_o subtilise_v and_o prepare_v by_o the_o fermentation_n in_o the_o glandule_n be_v plain_a because_o if_o it_o can_v they_o will_v be_v stuff_v up_o with_o the_o quantity_n of_o it_o drive_v in_o by_o the_o continual_a course_n of_o circulation_n so_o as_o to_o contract_v the_o muscle_n against_o our_o will_n which_o be_v otherwise_o now_o since_o the_o arterial_a juice_n can_v pass_v into_o the_o fiber_n till_o subtilise_v and_o since_o the_o animal_n spirit_n be_v not_o enough_o in_o quantity_n moreover_o since_o neither_o of_o they_o simple_o be_v capable_a of_o contract_n the_o fiber_n and_o if_o either_o be_v obstruct_v the_o action_n be_v abolish_v i_o say_v since_o it_o be_v a_o action_n that_o depend_v upon_o the_o mutual_a assistance_n of_o each_o it_o be_v apparent_a that_o it_o must_v be_v perform_v by_o a_o liquor_n result_v from_o a_o mixture_n of_o both_o and_o then_o we_o must_v of_o necessity_n allow_v a_o communication_n of_o these_o vessel_n else_o there_o can_v be_v no_o mixture_n of_o their_o content_n and_o the_o arterial_a juice_n must_v be_v prepare_v before_o it_o can_v be_v force_v into_o the_o fiber_n for_o the_o reason_n beforementioned_a to_o which_o end_n it_o will_v be_v necessary_a that_o the_o vessel_n terminate_v in_o the_o glandule_n that_o their_o content_n may_v be_v mix_v and_o that_o this_o subtle_a liquor_n result_v from_o a_o mutual_a conflict_n of_o the_o animal_n spirit_n subtilize_v the_o cruder_n arterial_a juice_n by_o fermentation_n in_o great_a or_o less_o quantity_n according_o as_o the_o spirit_n be_v lay_v down_o by_o the_o nerve_n may_v be_v prepare_v and_o make_v ready_a to_o be_v drive_v into_o the_o fiber_n to_o promote_v the_o fermentation_n and_o the_o preparation_n of_o this_o subtle_a liquor_n the_o forcible_a influx_n of_o the_o animal_n spirit_n and_o of_o the_o arterial_a blood_n much_o conduce_v for_o be_v the_o temper_n of_o the_o arterial_a juice_n and_o of_o the_o animal_n spirit_n never_o so_o good_a unless_o they_o be_v drive_v violent_o one_o against_o another_o there_o will_v be_v require_v a_o long_a time_n before_o they_o can_v be_v so_o mix_v and_o ferment_v as_o they_o ought_v but_o the_o succession_n of_o new_a matter_n admit_v no_o long_a delay_n it_o be_v requisite_a that_o they_o shall_v be_v thus_o forcible_o drive_v in_o together_o to_o the_o end_n that_o the_o spirit_n may_v be_v diffuse_v through_o the_o whole_a mass_n soon_o and_o that_o their_o minute_n particle_n strike_v more_o violent_o against_o the_o fix_a and_o compact_a particle_n of_o the_o blood_n may_v more_o immediate_o break_v and_o separate_v the_o strict_a union_n of_o its_o part_n and_o by_o a_o violent_a fermentation_n sufficient_o dissolve_v and_o volatilize_v they_o in_o so_o short_a a_o time_n as_o the_o continual_a pulsation_n of_o succeed_a humour_n admit_v the_o violent_a concourse_n of_o the_o blood_n and_o spirit_n do_v not_o only_o promote_v this_o fermentation_n and_o the_o separation_n of_o the_o subtle_a liquor_n but_o also_o successive_o force_v the_o matter_n prepare_v and_o separate_v into_o the_o fleshy_a fiber_n this_o be_v so_o high_o probable_a that_o it_o need_v no_o argument_n to_o make_v it_o more_o evident_a it_o be_v the_o unavoidable_a consequence_n of_o a_o continual_a circulation_n now_o i_o have_v give_v the_o reason_n of_o voluntary_a motion_n and_o the_o efficient_a cause_n of_o the_o contraction_n of_o a_o muscle_n it_o will_v be_v easy_a to_o unfold_v the_o reason_n of_o involuntary_a motion_n that_o voluntary_a motion_n depend_v upon_o the_o will_n be_v manifest_a and_o that_o involuntary_a motion_n be_v not_o at_o all_o subject_a to_o it_o but_o be_v perform_v not_o only_o without_o the_o dictate_v of_o our_o appetite_n but_o against_o they_o be_v so_o evident_a that_o it_o will_v be_v superfluous_a and_o useless_a to_o dispute_v it_o i_o shall_v only_o show_v how_o it_o be_v perform_v which_o be_v indeed_o a_o little_a more_o obscure_a as_o voluntary_a motion_n be_v perform_v motion_n for_o as_o much_o as_o the_o pore_n of_o the_o brain_n be_v dilate_v according_a to_o our_o appetite_n so_o that_o the_o animal_n spirit_n flow_v more_o plentiful_o into_o the_o glandule_n and_o prepare_v a_o sufficient_a quantity_n of_o the_o subtle_a liquor_n to_o distend_a the_o fiber_n as_o it_o pass_v through_o they_o so_o those_o pore_n which_o lead_v to_o the_o nerve_n serve_v to_o involuntary_a motion_n be_v proportion_v in_o such_o a_o manner_n that_o they_o continual_o convey_v animal_n spirit_n in_o a_o sufficient_a quantity_n to_o cause_v a_o perpetual_a motion_n these_o pore_n be_v so_o proportion_v there_o be_v no_o need_n that_o they_o shall_v have_v such_o a_o organic_n motion_n as_o those_o serve_n to_o the_o instrument_n of_o voluntary_a motion_n because_o since_o they_o be_v proportion_v so_o as_o to_o carry_v spirit_n in_o a_o competent_a quantity_n there_o be_v no_o necessity_n that_o they_o shall_v be_v either_o dilate_v or_o contract_v to_o prove_v that_o these_o pore_n do_v lay_v down_o a_o competent_a quantity_n of_o spirit_n to_o be_v carry_v to_o the_o gland_n prove_v i_o need_v not_o bring_v many_o argument_n for_o its_o plain_a and_o evident_a to_o all_o practitioner_n in_o physic_n that_o when_o the_o spirit_n be_v too_o much_o carry_v forth_o and_o exalt_v as_o in_o a_o diary_n fever_n the_o pulse_n be_v strong_a and_o vehement_a and_o by_o a_o too_o great_a exagitation_n of_o they_o it_o become_v more_o quick_a and_o frequent_a it_o be_v also_o evident_a that_o when_o the_o animal_n spirit_n be_v depress_v the_o pulse_n be_v weak_a slow_a and_o rare_a as_o most_o common_o in_o woman_n subject_a to_o hysterick_n fit_v and_o when_o the_o spirit_n by_o a_o acute_a or_o cronick_a distemper_n be_v wear_v out_o and_o almost_o spend_v the_o pulse_n be_v either_o vermiculans_n formicans_fw-la or_o tremens_fw-la which_o be_v sign_n that_o nature_n be_v almost_o spend_v and_o ready_a to_o yield_v to_o the_o distemper_n i_o say_v this_o be_v evident_a enough_o it_o be_v then_o beyond_o contradiction_n that_o a_o healthful_a pulse_n depend_v upon_o a_o moderate_a quantity_n of_o animal_n spirit_n and_o that_o they_o continual_o flow_v into_o those_o nerve_n lead_v to_o the_o instrument_n of_o involuntary_a motion_n and_o as_o their_o quantity_n vary_v so_o more_o or_o less_o of_o the_o subtle_a liquor_n be_v prepare_v to_o distend_a the_o fiber_n of_o those_o muscle_n when_o the_o spirit_n be_v weak_a or_o almost_o spend_v there_o must_v needs_o flow_v a_o less_o quantity_n into_o the_o glandule_n and_o when_o they_o be_v exalt_v a_o great_a and_o if_o extreme_n either_o frustrate_a natural_a or_o cause_n preternatural_a effect_n we_o may_v not_o only_o conclude_v that_o natural_a action_n be_v perform_v by_o a_o moderate_a quantity_n but_o from_o hence_o we_o may_v bring_v good_a argument_n for_o a_o further_a proof_n and_o confirmation_n of_o my_o hypothesis_n about_o voluntary_a motion_n since_o i_o have_v say_v that_o the_o spirit_n diastole_n by_o reason_n of_o a_o particular_a proportion_n of_o the_o pore_n flow_v continual_o in_o a_o just_a quantity_n and_o that_o these_o pore_n be_v not_o subject_a to_o be_v dilate_v or_o contract_v according_a to_o our_o appetite_n it_o remain_v that_o i_o shall_v show_v how_o it_o come_v to_o pass_v that_o the_o systole_n of_o the_o heart_n be_v interrupt_v with_o such_o constant_a diastole_n whereas_o when_o the_o pore_n serve_v to_o voluntary_a contraction_n be_v