together_o with_o almost_o all_o the_o ancient_n as_o vesalius_n columbus_n etc._n etc._n to_o the_o contrary_a i_o have_v never_o find_v this_o rete_fw-la want_v or_o with_o any_o difficulty_n discoverable_a in_o man_n spring_v from_o and_o lie_v on_o the_o inside_n of_o each_o carotid_n artery_n in_o that_o place_n of_o the_o circular_a sinus_n chief_v which_o look_v into_o the_o four_o abovementioned_a inferior_a and_o superior_a sinus_n in_o the_o basis_n of_o the_o brain_n and_o in_o some_o measure_n also_o the_o whole_a length_n of_o the_o sella_n turcica_n on_o each_o side_n between_o the_o gland_n and_o the_o carotid_v artery_n and_o that_o it_o be_v so_o small_a in_o they_o with_o respect_n to_o what_o it_o be_v in_o brute_n of_o several_a kind_n be_v no_o way_n surprise_v when_o consideration_n be_v have_v to_o the_o use_n and_o service_n of_o it_o in_o those_o creature_n who_o by_o reason_n of_o their_o prone_a position_n will_v otherwise_o be_v in_o danger_n of_o have_v their_o brain_n deluge_v as_o it_o be_v with_o a_o overgreat_a quantity_n of_o the_o influent_a blood_n and_o of_o a_o rupture_n of_o the_o vessel_n by_o its_o violent_a ingress_n and_o this_o danger_n so_o much_o the_o more_o threaten_a by_o how_o much_o the_o same_o cause_n which_o bring_v it_o into_o the_o brain_n with_o that_o force_n be_v equal_o as_o great_a and_o effectual_a to_o hinder_v its_o proportionable_a return_n for_o the_o relief_n of_o which_o inconveniency_n nature_n have_v contrive_v a_o mean_n of_o its_o more_o easy_a and_o safe_a descent_n into_o the_o brain_n by_o turn_v that_o one_o large_a stream_n of_o blood_n which_o through_o its_o be_v pen_v in_o one_o channel_n become_v so_o rapid_a into_o many_o more_o by_o which_o mean_v the_o carotid_v trunk_n above_o the_o dura_n mater_n in_o those_o creature_n be_v very_o small_a to_o what_o it_o be_v beneath_o whereas_o that_o artery_n in_o man_n etc._n etc._n have_v the_o same_o bigness_n on_o both_o side_n that_o membrane_n and_o they_o not_o only_o reticulate_v and_o contort_a for_o the_o more_o slow_a and_o laborious_a which_o contrivance_n the_o ancient_n think_v be_v only_o for_o a_o more_o exact_a preparation_n of_o the_o blood_n for_o animal_n spirit_n descent_n of_o the_o blood_n but_o also_o many_o of_o they_o by_o their_o insertion_n into_o the_o glandula_n pituitaria_fw-la attend_v with_o small_a vein_n issue_v thence_o to_o take_v off_o some_o part_n of_o the_o burden_n too_o this_o last_o contrivance_n of_o nature_n methinks_v may_v be_v sufficient_a to_o render_v that_o controversy_n of_o vieussenius_fw-la with_o willis_n which_o before_o they_o 2._o vieuss_n p._n 16_o pat_o 2._o be_v betwixt_o waleus_n and_o rolfincius_n the_o two_o latter_a on_o each_o side_n deny_v this_o rete_fw-la to_o have_v any_o vein_n very_o needless_a see_v that_o if_o the_o pituitary_a gland_n have_v any_o which_o i_o be_o confident_a it_o have_v notwithstanding_o the_o positive_a assertion_n of_o diemerbroeke_n 3._o diemerbr_n p._n 364._o par_fw-fr 3._o in_o order_n to_o serve_v his_o own_o most_o unprobable_a hypothesis_n to_o the_o contrary_a as_o have_v see_v they_o plain_o inject_v with_o wax_n then_o this_o part_n of_o the_o blood_n in_o some_o of_o the_o branch_n of_o the_o say_v rete_fw-la which_o be_v plain_o insert_v into_o the_o gland_n be_v equal_o capable_a of_o be_v reduce_v by_o those_o vein_n without_o any_o necessity_n of_o have_v recourse_n to_o those_o remote_a branch_n vieussenius_fw-la have_v be_v force_v to_o seek_v for_o 2._o vieuss_n p_o 45_o par_fw-fr 2._o as_o if_o it_o have_v have_v they_o of_o its_o own_o and_o that_o to_o the_o aforesaid_a position_n of_o different_a creature_n ought_v chief_o to_o be_v ascribe_v the_o variety_n of_o magnitude_n of_o this_o rete_fw-la in_o several_a of_o they_o its_o size_n in_o dog_n seem_v high_o to_o evince_v in_o which_o by_o reason_n of_o their_o horizontal_n position_n be_v neither_o so_o prone_a as_o several_a brute_n who_o seed_n on_o grass_n nor_o so_o erect_v as_o man_n that_o rete_fw-la be_v find_v small_a than_o in_o the_o first_o and_o large_a than_o in_o the_o last_o another_o use_v it_o have_v be_v think_v to_o have_v be_v to_o carry_v off_o a_o considerable_a quantity_n of_o a_o dull_a watery_a part_n of_o the_o blood_n in_o order_n to_o the_o production_n of_o the_o fine_a animal_n spirit_n and_o this_o it_o be_v think_v to_o effect_v by_o mean_n and_o help_n of_o the_o pituitary_a gland_n betwixt_o which_o be_v itself_o there_o be_v constant_o observe_v a_o great_a affinity_n the_o one_o be_v either_o great_a or_o lesser_a in_o proportion_n as_o the_o other_o be_v so_o and_o betwixt_o which_o there_o be_v in_o all_o creature_n but_o more_o remarkable_o in_o those_o where_o they_o be_v both_o large_a a_o distribution_n of_o several_a branch_n come_v from_o the_o aforesaid_a rete_fw-la and_o this_o be_v look_v upon_o by_o vieussenius_fw-la so_o considerable_a a_o office_n of_o the_o glandula_n pituitaria_fw-la that_o in_o those_o creature_n where_o it_o be_v but_o small_a as_o in_o man_n horse_n dog_n etc._n etc._n he_o have_v substitute_v many_o 3._o vieus_n p._n 102_o par_fw-fr 3._o but_o particular_o two_o cavity_n for_o that_o use_n in_o the_o wedglike_a bone_n just_a under_o the_o sella_n turcica_n in_o which_o he_o suppose_v that_o part_n of_o the_o aforesaid_a serum_n which_o by_o the_o smallness_n of_o the_o rete_fw-la can_v be_v return_v that_o way_n be_v remit_v by_o several_a little_a artery_n slip_v off_o from_o the_o carotid_n whilst_o under_o the_o sella_n turcica_n terminate_a in_o the_o two_o abovenamed_a cavity_n there_o either_o depose_v a_o part_n of_o the_o serum_n to_o be_v carry_v off_o by_o a_o strange_a way_n he_o there_o mention_n viz._n by_o two_o hole_n into_o the_o nostril_n and_o thence_o into_o the_o fauces_fw-la or_o else_o by_o certain_a vein_n meet_v they_o in_o that_o place_n as_o their_o proper_a reductory_n vessel_n 2._o vieuss_n p._n 9_o par_fw-fr 2._o to_o the_o heart_n now_o as_o to_o this_o office_n of_o the_o glandula_n pituitaria_fw-la i_o can_v easy_o be_v persuade_v it_o be_v either_o design_v for_o or_o capable_a of_o it_o till_o such_o time_n the_o abettor_n of_o this_o opinion_n can_v be_v able_a to_o show_v i_o it_o furnish_v with_o a_o excretory_a dust_n for_o this_o purpose_n and_o if_o they_o offer_v that_o the_o vein_n be_v such_o i_o reply_v that_o beside_o its_o be_v very_o unprobable_a that_o so_o vast_a a_o quantity_n of_o blood_n as_o continual_o be_v bring_v by_o the_o carotid_v artery_n to_o the_o brain_n shall_v be_v able_a to_o get_v rid_v of_o any_o considerable_a quantity_n of_o its_o serosity_n by_o so_o small_a a_o part_n as_o the_o glandula_n pituitaria_fw-la be_v it_o be_v not_o the_o usual_a way_n of_o nature_n to_o part_n with_o any_o share_n of_o its_o juice_n out_o of_o its_o vessel_n when_o so_o unactive_a and_o unprositable_a as_o this_o be_v and_o immediate_o to_o receive_v it_o in_o again_o see_v it_o be_v provide_v of_o emunctory_n enough_o to_o convey_v it_o away_o by_o moreover_o grant_v which_o by_o no_o reasonable_a mean_n be_v to_o be_v grant_v it_o be_v so_o as_o they_o will_v have_v it_o yet_o nevertheless_o in_o conformity_n to_o nature_n proceed_n in_o all_o suchlike_a case_n there_o ought_v to_o be_v a_o intermediate_v passage_n by_o way_n of_o a_o secretory_a dust_n which_o none_o have_v be_v able_a hitherto_o to_o discover_v and_o so_o far_o as_o vieussenius_fw-la seem_v to_o be_v of_o this_o opinion_n 3._o vieus_n p._n 102_o par_fw-fr 3._o which_o in_o one_o place_n he_o plain_o be_v make_v it_o of_o so_o gross_a and_o viscid_a a_o nature_n as_o be_v only_o sit_v to_o be_v discharge_v at_o the_o emunctory_a of_o the_o nose_n the_o same_o reply_n be_v satisfactory_a but_o when_o by_o way_n of_o flat_a contradiction_n to_o himself_o he_o come_v to_o make_v the_o same_o gross_a humour_n a_o perfect_a sine_fw-la lympha_fw-la the_o answer_n be_v then_o 1._o vieuss_n p._n 54._o par_fw-fr 1._o that_o there_o be_v no_o need_n of_o part_v with_o it_o beforehand_o see_v we_o find_v that_o liquor_n only_o separate_v by_o the_o lymphduct_n of_o the_o brain_n afterward_o see_v therefore_o there_o be_v such_o a_o affinity_n as_o before_o mention_v between_o the_o rete_fw-la mirabile_n and_o glandula_n pituitaria_fw-la and_o take_v it_o for_o grant_v that_o the_o office_n of_o the_o glandula_n pituitaria_fw-la be_v not_o what_o it_o have_v general_o hitherto_o be_v believe_v to_o the_o end_n we_o may_v attain_v a_o more_o exact_a knowledge_n of_o what_o it_o real_o be_v it_o seem_v not_o altogether_o immethodical_a to_o take_v that_o part_n into_o consideration_n in_o the_o next_o place_n together_o with_o the_o infundibulum_fw-la which_o last_o have_v not_o only_o as_o near_o a_o relation_n to_o the_o gland_n as_o the_o gland_n
artery_n unless_o the_o artery_n they_o accompany_v discharge_v their_o blood_n into_o the_o sinuss_n which_o as_o hereafter_o shall_v be_v show_v they_o plain_o do_v not_o for_o otherwise_o see_v they_o both_o grow_v capillary_a in_o their_o ascent_n from_o the_o basis_n of_o the_o cranium_fw-la they_o must_v necessary_o be_v both_o adductory_n vessel_n than_o which_o by_o the_o law_n of_o circulation_n there_o can_v be_v no_o great_a a_o absurdity_n wepfer_n not_o know_v of_o these_o vein_n be_v force_v to_o think_v and_o consequent_o to_o affirm_v that_o the_o artery_n leave_v the_o dura_n mater_n in_o their_o extremity_n and_o terminate_v in_o the_o pia_fw-la mater_fw-la and_o so_o have_v their_o blood_n reduce_v by_o the_o vein_n there_o but_o this_o be_v evident_o not_o so_o to_o the_o eye_n of_o any_o who_o heedful_o separate_v this_o membrane_n from_o the_o other_o before_o therefore_o i_o proceed_v to_o the_o description_n of_o the_o blood-vessel_n belong_v to_o the_o brain_n itself_o which_o by_o the_o exactness_n of_o method_n i_o ought_v to_o do_v i_o hope_v it_o may_v be_v pardonable_a if_o i_o make_v a_o short_a enquiry_n after_o the_o unaccustomed_a distribution_n of_o blood-vessel_n nature_n have_v furnish_v the_o brain_n in_o general_n with_o and_o the_o reason_n of_o its_o procedure_n therein_o the_o truth_n then_o concern_v this_o affair_n be_v that_o contrary_a to_o what_o have_v hitherto_o be_v observe_v the_o blood-vessel_n belong_v to_o this_o part_n in_o general_n as_o have_v already_o be_v observe_v be_v of_o two_o sort_n the_o one_o belong_v to_o the_o brain_n itself_o the_o other_o to_o its_o outmost_a integument_n now_o as_o to_o the_o first_o it_o be_v observable_a that_o the_o vein_n enter_v not_o the_o brain_n nor_o run_v concomitant_o like_v as_o in_o other_o part_n of_o the_o body_n with_o the_o artery_n the_o carotid_v enter_v at_o the_o four_o hole_n in_o the_o basis_n of_o the_o skull_n and_o the_o internal_a jugular_a at_o the_o eight_o the_o vertebral_n artery_n at_o the_o last_o and_o large_a hole_n of_o the_o skull_n and_o the_o vertebral_n vein_n at_o the_o nine_o which_o vieussenius_fw-la mistaken_o call_v the_o ten_o through_o which_o it_o run_v into_o the_o internal_a jugular_a 3._o vieâ—ssen_n p._n 163._o par_fw-fr 3._o at_o that_o vein_n entrance_n into_o the_o round_a hole_n at_o the_o bottom_n of_o the_o skull_n under_o the_o styliform_a process_n where_o the_o sinus_n lateralis_fw-la meet_v it_o where_o after_o have_v advance_v into_o certain_a venous_a production_n call_v sinus_n they_o descend_v from_o thence_o in_o large_a trunk_n grow_v capillary_n all-along_a in_o their_o passage_n till_o they_o meet_v the_o extremity_n of_o the_o artery_n and_o be_v indeed_o no_o other_o than_o mere_a branch_n of_o the_o sinus_n and_o consequent_o i_o look_v upon_o the_o sinus_n themselves_o no_o other_o than_o large_a vein_n the_o common_a reason_n all_o modern_a author_n give_v for_o this_o different_a distribution_n of_o blood-vessel_n belong_v to_o the_o brain_n from_o the_o other_o part_n of_o the_o body_n be_v that_o it_o may_v receive_v a_o equal_a warmth_n at_o the_o top_n as_o at_o the_o bottom_n as_o be_v thereby_o very_o much_o assist_v in_o the_o production_n of_o animal_n spirit_n in_o a_o equal_a proportion_n all_o over_o and_o that_o it_o be_v so_o may_v very_o well_o be_v grant_v but_o that_o nature_n have_v yet_o another_o provident_a intention_n will_v be_v as_o evident_a if_o we_o consider_v that_o if_o the_o vein_n have_v ascend_v with_o the_o artery_n through_o the_o hole_n in_o the_o bottom_n of_o the_o cranium_fw-la upon_o all_o great_a ebulition_n of_o the_o blood_n the_o pulsation_n of_o the_o artery_n will_v in_o that_o stricture_n of_o the_o vessel_n make_v by_o the_o bone_n of_o necessity_n hinder_v the_o freedom_n of_o its_o return_n by_o the_o vein_n and_o consequent_o occasion_v a_o stagnation_n of_o blood_n through_o the_o whole_a brain_n to_o the_o utter_a subversion_n of_o all_o its_o faculty_n nothing_o be_v more_o certain_a than_o that_o upon_o any_o considerable_a abatement_n of_o circulation_n there_o present_o happen_v by_o way_n of_o restagnation_n a_o secession_n of_o the_o watery_a and_o thin_a from_o the_o more_o gross_a and_o red_a part_n of_o the_o blood_n the_o other_o way_n of_o the_o vein_n enter_v the_o brain_n viz._n those_o appertain_v to_o its_o outward_a integument_n one_o at_o the_o six_o hole_n of_o the_o basis_n of_o the_o cranium_fw-la the_o other_o at_o the_o eight_o as_o aforesaid_a be_v their_o ascent_n with_o the_o artery_n after_o a_o quite_o different_a manner_n from_o the_o former_a even_o to_o their_o capillary_a extremity_n a_o manifest_a indication_n that_o they_o serve_v for_o the_o reduction_n of_o so_o much_o blood_n from_o the_o dura_n mater_n as_o the_o aforesaid_a sort_n of_o vessel_n the_o artery_n have_v bring_v thither_o and_o although_o by_o reason_n of_o their_o smallness_n nature_n seem_v not_o to_o have_v be_v so_o solicitous_a in_o avoid_v the_o inconvenience_n suppose_v to_o have_v follow_v upon_o the_o artery_n enter_v the_o same_o hole_n with_o the_o vein_n take_v notice_n of_o in_o the_o precede_a case_n where_o they_o be_v very_o large_a and_o consequent_o the_o effect_n may_v prove_v much_o more_o injurious_a yet_o nature_n have_v not_o be_v want_v in_o provide_v a_o remedy_n against_o it_o as_o will_v plain_o appear_v in_o the_o follow_a page_n from_o this_o manner_n of_o their_o enter_v the_o brain_n at_o the_o same_o inlet_n of_o the_o skull_n with_o the_o artery_n may_v for_o aught_o i_o know_v be_v very_o rational_o account_v for_o that_o violent_a troublesome_a noise_n which_o many_o in_o distemper_n arise_v from_o the_o turgescency_n of_o the_o blood_n cause_v a_o preternatural_a beat_n of_o the_o artery_n do_v so_o much_o complain_v of_o a_o symptom_n happen_v from_o the_o stricture_n before_o mention_v which_o the_o unyield_a circumference_n of_o the_o bone_n occasion_n upon_o the_o different_a blood-vessel_n enter_v at_o one_o and_o the_o same_o foramen_fw-la to_o which_o effect_n also_o the_o nearness_n of_o the_o os_fw-la petrosum_fw-la through_o which_o the_o hear_a nerve_n do_v pass_v to_o this_o hole_n which_o be_v in_o that_o part_n of_o the_o wedglike_a bone_n that_o join_v to_o or_o be_v conterminous_a with_o it_o do_v not_o a_o little_a contribute_v to_o the_o same_o cause_n in_o some_o measure_n doubtless_o may_v be_v ascribe_v the_o frequent_a headach_n happen_v in_o fever_n the_o artery_n then_o so_o swell_v and_o compress_v the_o vein_n against_o the_o edge_n of_o the_o bone_n that_o the_o blood_n can_v be_v return_v back_o through_o it_o in_o a_o due_a proportion_n and_o consequent_o by_o its_o stagnation_n the_o membrane_n become_v inflame_v and_o painful_a so_o that_o conformable_a to_o what_o have_v already_o be_v take_v notice_n of_o concern_v the_o wise_a contrivance_n of_o nature_n in_o order_v the_o different_a distribution_n of_o the_o blood-vessel_n so_o as_o to_o avoid_v the_o inconvenience_n which_o may_v accrue_v to_o the_o brain_n by_o compression_n of_o the_o reductory_n vessel_n occasion_v through_o their_o entrance_n at_o one_o and_o the_o same_o hole_n with_o the_o artery_n it_o seem_v very_o much_o worth_a our_o observe_n that_o beside_o the_o vein_n of_o the_o dura_n mater_n which_o enter_v the_o cranium_fw-la together_o with_o the_o artery_n as_o have_v before_o be_v mention_v there_o be_v also_o several_a other_o belong_v to_o this_o membrane_n have_v their_o rise_n at_o and_o their_o descent_n after_o a_o very_a remarkable_a manner_n from_o a_o vein_n hereafter_o to_o be_v describe_v on_o each_o side_n of_o the_o longitudinal_n sinus_n as_o you_o may_v see_v in_o the_o figure_n etc._n fig_n 4._o dd_n nn_n etc._n etc._n and_o consequent_o must_v grow_v capillary_n in_o their_o descent_n down_o from_o it_o after_o a_o quite_o contrary_a manner_n to_o the_o other_o and_o these_o do_v visible_o inosculate_v with_o some_o of_o the_o extremity_n of_o the_o aforesaid_a capillary_a artery_n after_o the_o same_o manner_n as_o those_o large_a vein_n belong_v to_o the_o pia_fw-la mater_fw-la do_v with_o the_o artery_n belong_v to_o the_o brain_n and_o it_o by_o which_o mean_v it_o so_o fall_v out_o that_o a_o considerable_a part_n of_o that_o blood_n bring_v up_o by_o the_o meninx_n artery_n be_v carry_v back_o by_o these_o vein_n to_o the_o end_n that_o especial_o in_o all_o preternatural_a swell_n of_o the_o blood_n the_o inconvenience_n of_o compression_n and_o all_o its_o ill_a consequence_n happen_v by_o reason_n of_o a_o overfulness_n of_o these_o vessel_n may_v be_v in_o a_o great_a measure_n avoid_v chap._n iu._n of_o the_o vein_n belong_v to_o the_o brain_n itself_o after_o this_o short_a digression_n by_o order_n of_o method_n the_o blood-vessel_n belong_v proper_o to_o the_o brain_n itself_o fall_v under_o consideration_n the_o curious_a
anatomist_n malpighius_n 2._o malp._n de_fw-fr cereb_n p._n 6._o par_fw-fr 2._o de_fw-fr cort._n cereb_n p_o 81_o par_fw-fr 2._o in_o his_o letter_n to_o fracassatus_n say_v they_o bear_v a_o three_o proportion_n to_o those_o of_o the_o whole_a body_n and_o for_o what_o reason_n see_v see_v the_o part_n itself_o bear_v not_o the_o same_o proportion_n to_o the_o whole_a it_o be_v so_o it_o will_v be_v worth_a our_o while_n to_o inquire_v hereafter_o these_o be_v either_o artery_n or_o vein_n the_o former_a go_v under_o the_o name_n of_o carotid_n and_o vertebral_n the_o first_o of_o which_o after_o a_o curve_v passage_n which_o be_v very_o well_o express_v in_o a_o fig._n 1._o willis_n p._n 29._o fig._n 1._o of_o dr._n willis_n from_o the_o place_n where_o it_o begin_v to_o enter_v the_o basis_n of_o the_o cranium_fw-la which_o be_v from_o the_o styliform_a process_n of_o the_o os_fw-la petrosum_fw-la to_o the_o place_n where_o on_o the_o inside_n they_o pass_v through_o the_o dura_n mater_n and_o ascend_v into_o the_o brain_n which_o be_v at_o the_o foremost_a internal_a process_n of_o the_o os_fw-mi cuneiforme_a there_o be_v very_o near_o a_o inch_n and_o a_o half_a distance_n i_o say_v after_o this_o crooked_a passage_n into_o the_o brain_n they_o be_v propagate_v quite_o through_o its_o substance_n have_v first_o divest_v themselves_o of_o that_o thick_a coat_n borrow_v of_o the_o dura_n mater_n during_o their_o stay_n in_o the_o passage_n aforemention_v but_o not_o without_o the_o mediation_n or_o intervention_n of_o the_o pia_fw-la mater_fw-la which_o membrane_n all_o the_o branch_n of_o the_o aforesaid_a as_o well_o as_o the_o vertebral_n artery_n more_o or_o less_o first_o prop_n themselves_o upon_o before_o they_o enter_v on_o and_o disperse_v themselves_o through_o the_o substance_n of_o the_o brain_n itself_o and_o be_v very_o fine_o express_v in_o a_o cut_n of_o placentinus_n 5._o sig._n p._n 179_o mol._n p._n 77._o marchetti_n p._n 191._o par_fw-fr 5._o at_o the_o end_n of_o spigelius_n insomuch_o that_o molinetti_n with_o who_o also_o agree_v marchetti_n look_v upon_o it_o as_o only_o a_o production_n of_o those_o numerous_a vessel_n whereas_o all_o those_o little_a ramification_n both_o of_o the_o carotid_n and_o vertebral_n artery_n viz._n those_o from_o the_o carotid_v artery_n which_o as_o soon_o as_o it_o get_v through_o the_o dura_n mater_n and_o part_n with_o its_o borrow_a coat_n be_v send_v to_o the_o 6._o the_o vieussen_n p._n 35._o par_fw-fr 1._o p_o 34._o par_fw-fr 6._o infundibulum_fw-la c._n infundibulum_fw-la tab._n 17._o c_o c._n olfactory_a and_o g._n and_o ib._n g_o g._n optic_a nerve_n together_o with_o those_o other_o of_o the_o vertebral_n artery_n which_o accompany_v pany_v the_o 1._o the_o vicussen_n p._n 35._o par_fw-fr 1._o three_o ibid._n three_o ibid._n four_o 1._o four_o tab._n 17._o p_o p._n 35._o par_fw-fr 1._o five_o 4._o five_o tab._n 17._o tt_z tab._n 4._o six_o 1._o six_o h._n p._n 35._o par_fw-fr 1._o seven_o h._n seven_o tab._n 17._o fig._n 2._o tab._n 4._o h_o h._n eight_o 2._o eight_o ib._n fig._n 2._o nine_o and_o h._n and_o tab._n 4._o h_o h._n ten_o pair_n of_o nerve_n inasmuch_o as_o they_o enter_v not_o the_o brain_n itself_o be_v altogether_o exempt_a from_o that_o membrane_n any_o of_o which_o now-mentioned_a blood-vessel_n you_o either_o find_v delineate_v in_o vieussenius_n 17_o table_n or_o mention_v in_o some_o other_o place_n of_o his_o book_n by_o those_o direction_n here_o place_v in_o the_o margin_n all_o which_o though_o existent_n in_o nature_n be_v nevertheless_o there_o paint_v too_o stiff_a and_o formal_a i_o be_o afraid_a by_o guess_n inasmuch_o as_o that_o without_o a_o injection_n of_o mercury_n except_o those_o two_o which_o belong_v to_o the_o olfactory_a and_o optic_a nerve_n they_o do_v rare_o come_v to_o sight_n in_o any_o form_n at_o all_o wax_v be_v over_o gross_a a_o body_n to_o enter_v such_o minute_n vessel_n as_o those_o be_v whereas_o by_o a_o injection_n with_o mercury_n i_o find_v scarce_o any_o nerve_n but_o what_o have_v some_o such_o small_a ramification_n of_o blood-vessel_n in_o they_o to_o go_v about_o to_o describe_v distinct_o the_o whole_a ramification_n of_o artery_n through_o this_o part_n which_o as_o be_v before_o note_v be_v here_o more_o remarkable_a for_o number_n and_o size_n than_o in_o any_o other_o part_n of_o the_o body_n will_v not_o only_o be_v to_o do_v what_o in_o a_o great_a measure_n have_v be_v already_o do_v by_o vieussenius_fw-la in_o his_o six_o chapter_n but_o seem_v to_o have_v also_o in_o it_o much_o more_o of_o ostentation_n than_o use_n i_o shall_v therefore_o only_o take_v notice_n of_o such_o propagation_n of_o they_o as_o be_v either_o remarkable_a for_o magnitude_n some_o curiosity_n of_o structure_n or_o useful_a design_n of_o nature_n and_o of_o this_o sort_n may_v well_o be_v esteem_v the_o vertebral_n artery_n next_o after_o the_o carotid_v which_o have_v already_o be_v describe_v as_o enter_v the_o brain_n at_o the_o last_o and_o large_a foramen_fw-la of_o the_o skull_n contrary_a to_o what_o dr._n willis_n 2._o willis_n p._n 29._o col_fw-fr 1._o par_fw-fr 2._o and_o before_o he_o wepfer_n affirm_v come_v thither_o on_o each_o side_n out_o of_o the_o hole_n in_o the_o transverse_a process_n of_o the_o first_o vertebra_n of_o the_o neck_n after_o a_o very_a remarkable_a curve_v manner_n as_o you_o see_v in_o the_o figure_n eâ—_n fio._n 1._o eâ—_n and_o by_o no_o mean_n like_v to_o the_o delineation_n and_o description_n give_v by_o dr._n lower_n and_o dr._n willis_n ascend_v lateral_o upon_o the_o medulla_n oblongata_fw-la as_o far_a as_o the_o begin_n of_o the_o processus_n annularis_fw-la where_o they_o meet_v together_o in_o one_o single_a trunk_n continue_v so_o the_o length_n thereof_o bb_n vieussen_n tab._n 4._o bb_n by_o vieussenius_fw-la call_v arteria_fw-la cervicalis_fw-la after_o which_o they_o either_o send_v forth_o two_o branch_n or_o receive_v two_o from_o the_o carotid_v artery_n by_o mean_n whereof_o there_o be_v a_o communication_n betwixt_o these_o two_o large_a blood-vessel_n and_o that_o of_o great_a use_n and_o benefit_n to_o the_o brain_n for_o by_o this_o mean_v it_o happen_v that_o if_o even_o three_o of_o the_o four_o great_a artery_n which_o furnish_v this_o part_n with_o blood_n be_v total_o obstruct_v there_o will_v yet_o be_v a_o way_n leave_v for_o a_o competent_a supply_n from_o the_o other_o unobstruct_v four_o these_o i_o call_v the_o communicant_a branch_n very_o ill_o point_v in_o bidloo_n nine_o table_n but_o very_o well_o in_o vieussenius_n four_o as_o may_v plain_o appear_v here_o in_o the_o figure_n take_v exact_o from_o nature_n itself_o dd_n fig_n i._o dd_n the_o structure_n and_o sinallness_n of_o these_o artery_n seem_v to_o suggest_v two_o yet_o further_o provident_a intention_n of_o nature_n the_o first_o be_v the_o same_o it_o have_v express_v in_o several_a other_o place_n as_o in_o the_o ascent_n of_o the_o blood_n by_o the_o carotid_v artery_n both_o which_o enter_v the_o brain_n in_o a_o crooked_a line_n the_o first_o at_o the_o four_o hole_n of_o the_o basis_n of_o the_o skull_n the_o second_o from_o the_o hole_n in_o the_o transverse_a process_n of_o the_o first_o vertebra_n of_o the_o neck_n after_o the_o manner_n already_o in_o both_o place_n describe_v so_o in_o the_o like_a manner_n here_o by_o the_o narrowness_n of_o these_o branch_n the_o blood_n be_v in_o a_o great_a measure_n retard_v in_o its_o motion_n to_o the_o carotid_v artery_n and_o by_o consequence_n to_o the_o brain_n itself_o which_o for_o reason_n hereafter_o to_o be_v give_v in_o describe_v the_o sinus_n will_v otherwise_o be_v in_o great_a danger_n of_o be_v overflow_v with_o extravasated_a and_o restagnant_fw-la blood_n the_o second_o be_v a_o force_v the_o blood_n more_o plentiful_o into_o the_o spinal_a artery_n with_o which_o though_o through_o the_o conical_a structure_n of_o the_o artery_n in_o common_a it_o can_v be_v altogether_o unfurnish_a yet_o by_o its_o perfectly-reflexed_n position_n will_v have_v it_o very_o scanty_o be_v it_o not_o that_o by_o reason_n of_o the_o narrowness_n of_o the_o aforesaid_a communicant-branche_n betwixt_o the_o two_o great_a artery_n the_o blood_n be_v drive_v back_o in_o a_o sort_n of_o a_o retrograde_a motion_n it_o be_v true_a there_o be_v a_o conformation_n of_o artery_n something_o like_o this_o though_o not_o altogether_o in_o the_o mammary_n and_o epigastrick_a branch_n but_o it_o be_v worth_a note_v that_o in_o both_o these_o place_n the_o main_a artery_n from_o which_o these_o branch_n spring_n be_v much_o more_o taper_n or_o conical_a c_o ibid._n p._n c_o c_o and_o the_o succeed_a export_v vessel_n far_o less_o both_a in_o number_n and_o size_n than_o those_o of_o the_o carotid_v artery_n here_o who_o foremost_a and_o hinder_v lateral_a ramification_n between_o the_o lobe_n of_o the_o
disperse_v through_o 2._o board_n p._n 196._o par_fw-fr 2._o it_o so_o forcible_a as_o to_o create_v a_o sensible_a systole_n and_o diastole_n in_o its_o outward_a cover_n it_o be_v worth_a note_v that_o while_o the_o blood-vessel_n be_v all_o full_a so_o as_o to_o keep_v the_o dura_n mater_n upon_o its_o full_a stretch_n the_o pulsation_n be_v not_o vi_o sible_a at_o all_o or_o at_o least_o very_o faint_o but_o after_o a_o depletion_n of_o the_o vessel_n so_o as_o that_o grow_v somewhat_o more_o lax_n the_o beat_n become_v very_o visible_a equal_o in_o the_o sinus_n and_o membrane_n too_o after_o have_v make_v this_o experiment_n i_o find_v one_o author_n of_o the_o same_o opinion_n and_o that_o be_v falloppius_n who_o in_o vindication_n of_o galen_n against_o vesalius_n his_o contemporary_a say_v all_o i_o have_v say_v upon_o the_o forego_n experiment_n and_o all_o the_o great_a vesalius_n be_v able_a to_o answer_v in_o his_o own_o vindication_n in_o his_o ingenious_a book_n call_v anatomicam_fw-la gabr._fw-la falloppi_n observat_fw-la examen_fw-la fall_v very_o short_a of_o its_o aim_n as_o to_o the_o transverse_a ligament_n which_o be_v in_o some_o place_n r._n place_n fig._n 4._o r._n round_o cordal_n and_o in_o other_o x._o other_o ibid._n x._o broad_a or_o membranous_a in_o the_o longitudinal_n sinus_n chief_o both_o serve_v for_o strength_n and_o in_o concurrence_n with_o the_o cruciform_a ligamentous_a fibre_n take_v notice_n of_o by_o vieussenius_fw-la on_o the_o under_o and_o outside_n of_o this_o sinus_n from_o whence_o the_o fibre_n belong_v to_o the_o falcate_v process_n aforemention_v seem_v to_o have_v their_o original_n elasticity_n to_o this_o part_n for_o its_o more_o vigorous_a reduction_n of_o the_o blood_n pass_v through_o it_o together_o with_o its_o blind_a cavity_n or_o diverticulum_n serve_v to_o moderate_v the_o over-swift_a or_o violent_a motion_n of_o the_o blood_n see_v i_o find_v they_o so_o exact_o describe_v by_o vieussenius_fw-la to_o who_o the_o reader_n may_v have_v recourse_n i_o think_v their_o description_n need_v take_v up_o no_o room_n here_o but_o as_o to_o the_o manner_n of_o the_o vein_n enter_v this_o sinus_n i_o find_v it_o far_o different_a from_o that_o which_o be_v describe_v by_o lower_n first_o etc._n low._n fig._n 4._o h_o h._n vituss_n tab_v 2_o d_o d_o etc._n etc._n and_o afterward_o by_o vieussenius_fw-la both_o who_o make_v they_o enter_v with_o their_o orifice_n from_o behind_o forward_o two_o or_o three_o only_o except_v by_o vieussenius_fw-la and_o that_o for_o some_o other_o useful_a purpose_n than_o what_o have_v hitherto_o be_v take_v notice_n of_o and_o this_o be_v as_o follow_v etc._n fig._n 4._o dd_v etc._n etc._n viz._n about_o one_o half_a of_o they_o though_o intermix_o but_o all_o after_o have_v first_o upon_o their_o arrival_n at_o the_o sinus_n insinuate_v themselves_o for_o some_o space_n alter_v the_o manner_n of_o the_o pancreatic_a dust_n or_o ureter_n first_o take_v notice_n of_o by_o low_a etc._n ib._n dd_o etc._n etc._n betwixt_o the_o duplicature_n of_o the_o dura_n mater_n from_o behind_o forward_o the_o other_o half_o from_o before_o backward_o as_o in_o the_o figure_n now_o by_o this_o contrivance_n it_o be_v plain_a that_o first_o of_o all_o there_o be_v make_v two_o contrary_a torrent_n in_o one_o and_o the_o same_o channel_n by_o which_o mean_v the_o refluent_a blood_n make_v poor_a by_o the_o vast_a quantity_n of_o its_o rich_a part_n draw_v off_o as_o it_o be_v into_o animal_n spirit_n through_o a_o collision_n of_o part_n which_o by_o this_o contrivance_n must_v needs_o fall_v out_o be_v preserve_v in_o its_o due_a mixture_n which_o when_o at_o any_o time_n lose_v through_o the_o languish_a of_o its_o intestine_a motion_n or_o elasticity_n retard_v even_o its_o circular_a or_o progressive_a motion_n which_o when_o it_o happen_v but_o in_o some_o degree_n be_v the_o cause_n of_o many_o distemper_n and_o when_o altogether_o of_o death_n itself_o in_o the_o next_o place_n the_o circulation_n be_v at_o all_o time_n not_o only_o somewhat_o retard_v and_o the_o blood_n hinder_v together_o with_o the_o help_n of_o the_o bony_a cell_n at_o which_o the_o internal_a jugular_a vein_n enter_v the_o sinus_n especial_o in_o a_o erect_a posture_n from_o descend_v with_o that_o rapidness_n and_o weight_n it_o will_v otherwise_o have_v do_v upon_o the_o descend_a cava_fw-la to_o the_o heart_n but_o also_o much_o more_o so_o retard_v in_o a_o supine_n position_n of_o the_o head_n a_o posture_n most_o natural_a and_o ordinary_a for_o mankind_n to_o take_v their_o rest_n in_o through_o which_o contrivance_n in_o concurrence_n with_o that_o of_o the_o lateral_a sinus_n who_o structure_n be_v such_o that_o in_o the_o aforesaid_a posture_n the_o blood_n be_v force_v to_o climb_v upward_o before_o it_o can_v arrive_v at_o the_o place_n of_o its_o descent_n into_o the_o jugular_a vein_n there_o be_v make_v a_o more_o plentiful_a generation_n of_o animal_n spirit_n one_o chief_a cause_n of_o the_o great_a refreshment_n and_o vigorous_a disposition_n of_o the_o whole_a body_n we_o find_v after_o sleep_v as_o to_o the_o other_o manner_n of_o the_o vein_n enter_v this_o sinus_n viz._n from_o before_o backward_o it_o from_o thence_o happen_v that_o in_o a_o prone_a position_n of_o the_o brain_n a_o posture_n not_o uncommon_a among_o man_n the_o blood_n be_v help_v forward_o in_o its_o circulation_n through_o the_o sinus_n the_o truth_n and_o design_n whereof_o be_v at_o once_o both_o evident_a and_o point_a at_o by_o nature_n from_o the_o structure_n of_o this_o part_n and_o which_o therefore_o show_v the_o great_a usefulness_n of_o comparative_a anatomy_n in_o brute_n who_o by_o reason_n of_o such_o a_o position_n which_o the_o necessity_n of_o feed_v almost_o always_o keep_v they_o in_o have_v always_o such_o a_o disposition_n of_o this_o part_n to_o assist_v the_o blood_n in_o its_o heavy_a circulation_n the_o design_n of_o nature_n in_o make_v these_o channel_n so_o wide_o on_o a_o sudden_a in_o respect_n to_o the_o branch_n of_o vein_n late_o treat_v of_o terminate_n in_o they_o seem_v to_o correspond_v with_o the_o conformation_n of_o the_o part_n just_a now_o treat_v of_o and_o with_o that_o it_o have_v in_o make_v the_o ramification_n of_o artery_n afore_o take_v notice_n of_o so_o large_a and_o unproportionable_a to_o the_o trunk_n from_o which_o they_o spring_v which_o be_v a_o flower_n than_o ordinary_a circulation_n of_o blood_n through_o the_o brain_n in_o order_n to_o make_v a_o still_o more_o copious_a production_n of_o the_o animal_n spirit_n so_o call_v which_o profitable_a design_n and_o end_v of_o nature_n have_v nevertheless_o be_v attend_v with_o a_o very_a great_a inconvenience_n viz._n a_o extravasation_n of_o too_o much_o serum_n the_o usual_a effect_n or_o consequence_n of_o a_o slackened_a circulation_n have_v it_o not_o be_v for_o another_o provident_a contrivance_n of_o nature_n in_o the_o two_o communicant-branche_n betwixt_o the_o carotid_n and_o vertebral_n artery_n aforementioned_a p._n 36._o by_o the_o narrowness_n of_o who_o channel_n the_o influent_a blood_n be_v in_o some_o measure_n repress_v in_o its_o motion_n and_o a_o overcharge_n the_o vessel_n with_o blood_n prevent_v these_o sinus_n differ_v in_o structure_n one_o from_o another_o the_o longitudinal_n and_o lateral_a one_o have_v many_o transverse_a ligament_n which_o the_o other_o have_v not_o and_o the_o longitudinal_n have_v many_o small_a cavity_n or_o blind_a diverticulum_n as_o aforesaid_a which_o the_o lateral_a have_v not_o the_o use_n of_o they_o all_o be_v for_o strengthen_v and_o defend_v they_o from_o give_v way_n to_o the_o violent_a irruption_n of_o blood_n into_o they_o against_o which_o sometime_o notwithstanding_o they_o be_v not_o able_a to_o defend_v themselves_o as_o i_o have_v see_v in_o many_o skull_n ni_fw-fr which_z the_o blood_n have_v burst_v open_a the_o side_n of_o the_o sinus_n and_o find_v its_o way_n between_o the_o duplicature_n of_o it_o so_o as_o even_o to_o have_v make_v a_o fovea_fw-la or_o cavity_n in_o the_o cranium_fw-la itself_o as_o be_v before_o note_v one_o of_o which_o i_o have_v now_o by_o i_o chap._n vii_o of_o the_o plexus_fw-la choroeides_n this_o plexus_fw-la be_v a_o aggregate_v body_n make_v up_o of_o artery_n vein_n membrane_n and_o gland_n double_a on_o each_o side_n which_o have_v not_o before_o be_v take_v notice_n of_o and_o consequent_o have_v two_o original_n the_o first_o original_a be_v from_o the_o foremost_a branch_n of_o the_o communicant_a artery_n ee_o fig_n 1._o ee_o which_o run_v backward_o up_o betwixt_o the_o hinder_a lobe_n of_o the_o brain_n in_o which_o for_o some_o part_n of_o the_o way_n it_o be_v immerge_v and_o to_o which_o it_o give_v many_o large_a branch_n and_o the_o medulla_n oblongata_fw-la at_o length_n arrive_v at_o the_o lateral_a ventricles_n ee_o fig_n 5._o ee_o and_o make_v one_o part_n of_o
to_o make_v myself_o a_o party_n on_o either_o side_n at_o this_o time_n see_v the_o fineness_n of_o structure_n and_o dignity_n of_o function_n be_v sufficient_a to_o give_v preference_n to_o one_o above_o another_o and_o to_o render_v it_o more_o worthy_a of_o a_o particular_a consideration_n and_o this_o part_n i_o take_v to_o be_v the_o brain_n the_o delicacy_n of_o who_o structure_n be_v such_o that_o with_o no_o little_a resemblance_n to_o its_o divine_a author_n whilst_o it_o give_v we_o the_o great_a and_o clear_a discovery_n of_o other_o thing_n lie_v most_o conceal_v itself_o and_o see_v all_o that_o mystic_a knowledge_n which_o in_o ancient_a time_n in_o the_o eye_n especial_o of_o the_o vulgar_a appear_v mere_a necromancy_n or_o witchcraft_n as_o well_o as_o all_o the_o curious_a discovery_n of_o more_o modern_a age_n upon_o the_o whole_a subject_n of_o nature_n now_o go_v under_o the_o more_o familiar_a and_o proper_a term_n of_o refine_a sense_n or_o philosophy_n have_v 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back_o again_o to_o and_o terminate_v in_o the_o falx_n a_o little_a beyond_o the_o rise_n of_o the_o aforesaid_a middle_a series_n of_o fibres_n those_o from_o the_o middle_a part_n of_o the_o falx_n run_v backward_o but_o less_o curve_v than_o the_o rest_n terminate_n as_o the_o fibre_n which_o arise_v backward_o do_v at_o some_o distance_n from_o the_o process_n in_o the_o inward_a superficies_n of_o the_o dura_n mater_n as_o to_o those_o belong_v to_o the_o exernal_a side_n or_o second_v lamina_fw-la of_o the_o dura_n mater_n they_o be_v extreme_a small_a and_o obscure_a run_v from_o behind_o forward_o beside_o these_o there_o be_v no_o less_o remarkable_a one_o belong_v to_o the_o falx_n itself_o of_o two_o sort_n of_o order_n the_o one_o run_v straight_o about_o half_a the_o length_n of_o it_o on_o its_o upper_a part_n from_o before_o backward_o the_o other_o transverse_n from_o the_o inferior_a or_o five_o sinus_n to_o the_o superior_a or_o three_o on_o the_o hinder_a part_n of_o the_o process_n and_o be_v most_o conspicuous_a there_o as_o the_o other_o be_v towards_o its_o foremost_a part_n as_o to_o the_o use_v of_o those_o fibre_n it_o may_v be_v remember_v that_o this_o membrane_n consist_v of_o two_o lamina_n between_o which_o the_o vein_n which_o reduce_v the_o blood_n from_o the_o artery_n which_o furnish_v the_o whole_a brain_n with_o it_o run_v for_o some_o space_n after_o the_o manner_n of_o the_o ureter_n in_o the_o bladder_n in_o large_a trunk_n before_o they_o enter_v the_o sinus_n so_o that_o the_o fibrous_a constitution_n of_o this_o membrane_n here_o where_o the_o blood-vessel_n be_v large_a together_o with_o the_o curve_v entrance_n of_o they_o into_o the_o sinus_n especial_o in_o a_o erect_a position_n of_o the_o body_n do_v the_o office_n of_o valve_n support_v the_o weight_n and_o promote_v the_o ascent_n of_o the_o blood_n but_o that_o which_o be_v most_o considerable_a be_v this_o that_o if_o the_o inward_a lamina_fw-la of_o this_o part_n which_o make_v the_o inferior_a and_o lateral_a part_n of_o the_o sinus_n be_v not_o in_o some_o measure_n furnish_v with_o additional_a strength_n on_o this_o side_n suitable_a to_o that_o which_o it_o have_v on_o the_o other_o by_o reason_n of_o its_o cohesion_n to_o the_o skull_n the_o blood_n which_o be_v continual_o run_v through_o it_o with_o no_o small_a rapidity_n especial_o in_o great_a plenitude_n of_o the_o vessel_n or_o preternatural_a ebulition_n will_v frequent_o burst_v out_o or_o at_o least_o cause_n such_o distention_n as_o can_v not_o but_o be_v very_o injurious_a to_o a_o part_n so_o very_o exquisite_o sensible_a yet_o notwithstanding_o though_o nature_n seem_v plain_o to_o have_v make_v a_o double_a provision_n against_o such_o accident_n by_o the_o transverse_a ligament_n within_o the_o sinus_n and_o these_o strong_a and_o numerous_a fibre_n without_o i_o have_v rare_o open_v any_o strangle_a body_n where_o some_o
they_o both_o reckon_v the_o original_n of_o the_o second_o proper_a integument_n of_o the_o spinal_a marrow_n which_o tulpius_n first_o discover_v 2._o tulp_n cent_n 1_o ob_n 29._o vienssen_n p._n 143._o par_fw-fr 2._o and_o vieussenius_fw-la suppose_n to_o be_v a_o duplicature_n of_o the_o pia_fw-la mater_fw-la in_o that_o part_n only_o now_o that_o there_o be_v a_o middle_a membrane_n in_o some_o part_n of_o the_o brain_n and_o particular_o at_o the_o basis_n of_o the_o cerebellum_fw-la from_o whence_o it_o be_v continue_v down_o to_o the_o spinal_a marrow_n constitute_v the_o second_o proper_a integument_n of_o that_o part_n as_o aforementioned_a i_o have_v long_a since-observed_n but_o whether_o it_o be_v another_o absolute_a distinct_a membrane_n from_o that_o other_o subjacent_a one_o by_o the_o aforesaid_a author_n proper_o name_v the_o pia_fw-la mater_fw-la and_o common_a to_o the_o spinal_a marrow_n with_o the_o brain_n itself_o like_v as_o be_v this_o other_o second_o middle_a one_o too_o or_o only_o one_o and_o the_o same_o membrane_n double_a as_o consist_v of_o two_o lamina_n may_v well_o be_v doubt_v of_o wherefore_o for_o satisfaction_n concern_v this_o difficulty_n i_o have_v late_o make_v the_o strict_a enquiry_n possible_a and_o that_o in_o a_o subject_n most_o likely_a to_o afford_v a_o decision_n in_o such_o a_o controversy_n and_o this_o be_v a_o human_a brain_n extreme_o hydropical_a where_o there_o be_v no_o cavity_n or_o interstice_n without_o abundance_n of_o water_n extravasated_a insomuch_o that_o where_o ever_o according_a to_o the_o natural_a construction_n of_o part_n there_o be_v any_o large_a than_o ordinary_a duplicature_n of_o this_o membrane_n as_o there_o be_v at_o the_o end_n of_o the_o calamus_fw-la scriptorius_fw-la betwixt_o the_o superincumbent_n cerebellum_fw-la and_o medulla_n spinalis_fw-la in_o the_o isthmus_n or_o space_n betwixt_o the_o cerebrum_fw-la and_o cerebellum_fw-la upon_o the_o process_n call_v nates_n and_o testes_fw-la in_o the_o depress_a part_n also_o of_o the_o brain_n between_o the_o begin_n of_o the_o annular_a process_n and_o the_o first_o appearance_n or_o come_v out_o of_o the_o olfactory_a nerve_n by_o vesalius_n take_v notice_n of_o and_o call_v a_o process_n of_o the_o pia_fw-la mater_fw-la 794_o visal_n p._n 794_o there_o be_v find_v a_o great_a deal_n of_o water_n distend_v this_o duplicature_n much_o beyond_o its_o natural_a limit_n so_o that_o by_o way_n of_o consequence_n if_o these_o cavity_n be_v only_a interstice_n of_o two_o different_a membrane_n distinct_o invest_v the_o brain_n and_o not_o a_o duplicature_n only_o of_o one_o and_o the_o same_o the_o water_n will_v then_o probable_o have_v insinuate_v itself_o betwixt_o they_o and_o make_v they_o to_o have_v appear_v far_o different_a from_o what_o they_o do_v agreeable_a to_o what_o it_o have_v often_o be_v find_v to_o do_v in_o some_o dropsy_n of_o the_o belly_n where_o the_o water_n have_v be_v find_v so_o to_o have_v divide_v or_o part_v the_o double_a membrane_n of_o that_o region_n call_v peritoneum_fw-la as_o to_o have_v render_v it_o capable_a of_o contain_v the_o quantity_n of_o fifteen_o gallon_n of_o water_n and_o upon_o a_o discharge_n of_o the_o same_o after_o death_n by_o cut_v the_o external_a lamina_fw-la of_o that_o membrane_n the_o other_o inward_a one_o be_v yet_o unknown_a to_o the_o dissecter_n leave_v whole_a to_o have_v impose_v upon_o the_o spectator_n and_o those_o very_a sagacious_a one_o so_o as_o that_o at_o first_o sight_n till_o after_o have_v recollect_v themselves_o 52._o job_n meiâ—r_n obs_n 52._o and_o divide_v the_o other_o second_o lamina_fw-la too_o they_o think_v the_o bowel_n of_o this_o part_n to_o have_v be_v want_v but_o contrary_a to_o this_o event_n in_o this_o subject_a i_o find_v this_o membrane_n entire_a and_o free_a from_o any_o divulsion_n throughout_o its_o whole_a circumference_n except_v the_o place_n afore_o take_v notice_n of_o 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lamina_fw-la under_o it_o which_o last_v most_o proper_o it_o be_v that_o insinuate_v itself_o through_o all_o the_o close_a plicature_n of_o the_o brain_n and_o that_o as_o by_o frequent_a inspection_n i_o have_v often_o observe_v not_o in_o a_o continuous_a but_o rather_o retiform_a contexture_n and_o so_o by_o such_o as_o love_v hard_a word_n or_o term_n of_o art_n may_v be_v call_v after_o the_o same_o name_n of_o that_o membrane_n invest_v the_o crystalline_a humour_n of_o the_o eye_n arachnoeides_n the_o advantage_n accrue_v to_o the_o whole_a through_o such_o a_o disposition_n of_o this_o part_n as_o have_v already_o be_v observe_v be_v very_o considerable_a inasmuch_o as_o that_o thereby_o first_o of_o all_o it_o become_v not_o only_o a_o integument_n of_o enclosure_n on_o behalf_n of_o the_o brain_n and_o the_o blood-vessel_n belong_v to_o it_o in_o general_a but_o of_o expansion_n for_o strength_n too_o where_o the_o peculiar_a structure_n of_o part_n in_o such_o place_n as_o 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of_o the_o cortical_a part_n of_o the_o brain_n in_o strangle_a body_n appear_v glandulous_a very_o plain_o through_o this_o transparent_a integument_n which_o upon_o bare_a inspection_n without_o further_a enquiry_n may_v easy_o impose_v upon_o the_o less_o cautious_a spectator_n as_o to_o the_o latter_a the_o plexus_n and_o distribution_n of_o blood-vessel_n from_o they_o after_o a_o separation_n of_o the_o serous_a gross_a part_n of_o the_o blood_n in_o the_o aforementioned_a suppose_a glandule_n according_a to_o that_o learned_a person_n conjecture_n into_o the_o substance_n of_o the_o brain_n in_o order_n to_o produce_v the_o fine_a animal_n spirit_n i_o can_v but_o look_v upon_o it_o altogether_o conjectural_a till_o such_o time_n as_o not_o only_o the_o glandes_n but_o their_o excretory_a duct_n also_o together_o with_o the_o emunctory_n where_o the_o suppose_a excrementitious_a juice_n be_v eliminate_v lymphatic_a or_o reductory_a glandes_n if_o they_o can_v be_v find_v never_o have_v be_v by_o nature_n design_v to_o any_o such_o use_n be_v first_o discover_v mater_fw-la blood-vessel_n
brain_n bear_v a_o over-proportion_n to_o the_o trunk_n from_o whence_o they_o come_v and_o consequent_o must_v according_a to_o the_o aforesaid_a observation_n of_o malpighius_n in_o his_o letter_n to_o fracassatus_n receive_v the_o blood_n bring_v thither_o far_o more_o free_o and_o plentiful_o beside_o the_o cervical_a artery_n here_o be_v so_o far_o from_o be_v conical_a that_o be_v make_v up_o of_o two_o vertebral_a artery_n join_v together_o it_o be_v much_o wide_a than_o either_o of_o they_o single_a as_o appear_v plain_o in_o the_o figure_n g._n fig_n 1._o g._n and_o consequent_o will_v have_v carry_v away_o the_o blood_n forward_o from_o the_o spinal_a artery_n more_o free_o have_v not_o nature_n order_v the_o structure_n of_o vessel_n after_o another_o manner_n here_o than_o it_o do_v in_o other_o part_n of_o the_o body_n where_o there_o be_v not_o the_o same_o necessity_n of_o contrivance_n one_o more_o branch_n i_o take_v leave_n to_o mention_v only_o upon_o the_o score_n of_o its_o never_o hitherto_o have_v be_v take_v notice_n of_o by_o any_o and_o that_o be_v a_o small_a artery_n attend_v with_o a_o vein_n pass_v through_o the_o lateral_a part_n of_o the_o os_fw-mi cuneiforme_a which_o constitute_v the_o back_n part_n of_o the_o orbite_n of_o the_o eye_n just_a under_o a_o very_a little_a process_n of_o that_o bone_n which_o either_o by_o reason_n of_o its_o size_n have_v escape_v be_v see_v or_o inconsiderable_a use_n be_v never_o before_o as_o far_o as_o i_o know_v think_v worth_a the_o mention_v and_o this_o upon_o raise_v the_o fore_a lobe_n of_o the_o brain_n offer_v itself_o to_o the_o eye_n of_o any_o heedful_a observer_n chap._n v._o of_o the_o sinus_n belong_v to_o the_o brain_n a_o three_o sort_n of_o vessel_n offer_v themselves_o next_o to_o our_o consideration_n under_o the_o general_a name_n of_o sinus_n these_o former_o be_v reckon_v only_o four_o to_o which_o vesalius_n add_v a_o five_o at_o the_o bottom_n of_o the_o falx_n f._n vesal_n p._n 758_o fig._n 3._o f._n by_o he_o only_o call_v a_o vein_n which_o though_o frequent_o find_v yet_o in_o some_o subject_n be_v want_v 2._o board_n p._n 105._o par_fw-fr 2._o bourdon_n mention_n two_o more_o at_o the_o bottom_n of_o each_o side_n the_o side_n the_o second_o process_n of_o the_o dura_n mater_n under_o the_o lateral_a one_o which_o i_o never_o see_v but_o once_o and_o i_o be_o apt_a to_o think_v with_o vieussenius_fw-la be_v most_o common_o want_v vieussenius_fw-la describe_v four_o more_o 11._o vieuss_n p._n 6._o par_fw-fr 5._o fall_n tom_n 1._o p_o 114._o vid._n vid._n p._n 117._o cap._n 10._o p_o 310._o cap._n 11._o which_o i_o find_v long_o before_o take_v notice_n of_o and_o exact_o describe_v by_o falloppius_n and_o after_o he_o though_o but_o rude_o by_o that_o laborious_a collector_n vidus_fw-la vidius_fw-la i_o think_v i_o can_v show_v one_o more_o but_o be_v their_o number_n what_o it_o will_v i_o judge_v it_o reasonable_a to_o look_v upon_o they_o no_o other_o than_o vein_n whether_o we_o consider_v they_o in_o respect_n to_o either_o office_n or_o structure_n all_o the_o business_n be_v to_o consider_v and_o show_v for_o what_o end_n they_o appear_v as_o such_o large_a channel_n into_o which_o all_o the_o vein_n of_o the_o brain_n like_v so_o many_o small_a rivulet_n after_o a_o unusual_a manner_n do_v empty_a themselves_o and_o that_o i_o will_v endeavour_v to_o do_v after_o have_v first_o show_v their_o several_a respective_a situation_n the_o first_o two_o be_v call_v laterales_fw-la bb._n fig_n 4._o bb._n which_o run_v within_o a_o strong_a duplicature_n of_o the_o hinder_a process_n of_o the_o dura_n mater_n down_o upon_o the_o os_fw-mi occipitale_fw-it over_o the_o cerebellum_fw-la till_o in_o their_o further_a descent_n after_o a_o tortuous_a manner_n upon_o the_o low_a production_n of_o the_o ossa_n petrosa_n they_o wind_n under_o they_o in_o order_n to_o their_o passage_n out_o of_o the_o cranium_fw-la at_o the_o eight_o hole_n cc._n fig_n 2._o cc._n common_a to_o the_o eight_o pair_n of_o nerve_n go_v out_o bb_n ibid._n bb_n the_o three_o branch_n of_o artery_n belong_v to_o the_o dura_n mater_n and_o the_o internal_a jugular_a come_n in_o which_o be_v through_o two_o round_a bony_a cell_n in_o the_o os_fw-la petrosa_fw-la l._n ibid._n l._n just_a under_o the_o styloeid_v process_n into_o the_o internal_a jugular_a vein_n into_o which_o together_o with_o the_o vertebral_n all_o the_o rest_n of_o the_o vein_n and_o sinus_n belong_v to_o the_o brain_n discharge_v the_o refluent_a blood_n the_o next_o be_v call_v the_o three_o or_o longitudinal_n one_o etc._n fig_n 4._o aa_o etc._n etc._n from_o its_o rise_n at_o the_o bony_a process_n call_v crista_n galli_n and_o progress_n the_o whole_a length_n of_o the_o brain_n to_o the_o hinder_a and_o somewhat_o decline_a part_n of_o the_o occipital_a bone_n where_o it_o seem_v to_o be_v cleave_v into_o the_o two_o lateral_a one_o into_o this_o three_o sinus_n not_o only_o the_o internal_a vein_n of_o the_o brain_n itself_o be_v insert_v but_o also_o some_o of_o those_o belong_v to_o its_o outward_a integument_n which_o falloppius_n first_o 2._o fallop_n tom_fw-mi 1._o p._n 82._o par_fw-fr 3_o vitus_n p._n 10._o par_fw-fr 2._o wep_v p_o 42._o par_fw-fr 2._o one_o of_o the_o luminary_n of_o anatomy_n observe_v and_o after_o he_o vieussenius_fw-la which_o be_v by_o wepfer_n mistaken_o take_v for_o artery_n who_o nevertheless_o for_o aught_o i_o know_v may_v be_v in_o the_o right_n in_o assign_v the_o overcloseness_n of_o the_o pore_n of_o the_o cranium_fw-la by_o what_o accident_n soever_o happen_v through_o which_o the_o refluent_a blood_n be_v transmit_v to_o the_o sinus_n for_o a_o frequent_a cause_n of_o inveterate_a obstinate_a headach_n the_o four_o c._n fig_n 4._o c._n which_o from_o its_o situation_n may_v not_o improper_o be_v call_v the_o internal_a sinus_n come_v from_o the_o under_o part_n of_o the_o falcate_v process_n at_o that_o point_n where_o it_o become_v continuous_a to_o the_o second_o process_n of_o the_o dura_n mater_n ii_o ibid._n ii_o and_o a_o large_a double_a vein_n belong_v to_o the_o plexus_fw-la choroeides_n together_o with_o the_o five_o sinus_n k._n ibid._n k._n when_o there_o be_v one_o enter_v it_o at_o a_o interstice_n make_v between_o the_o end_n of_o the_o corpus_fw-la callosum_fw-la the_o nates_n testes_fw-la and_o cerebellum_fw-la from_o whence_o have_v first_o pass_v over_o the_o cerebellum_fw-la it_o at_o last_o arrive_v with_o the_o other_o three_o at_o that_o place_n of_o union_n which_o from_o its_o author_n have_v ever_o since_o retain_v the_o name_n of_o torcular_a herophili_n g._n ibid_fw-la g._n the_o four_o other_o of_o falloppius_n and_o vidus_fw-la vidius_fw-la or_o vieussenius_fw-la by_o this_o last_o call_v superiores_fw-la and_o inferiores_fw-la the_o dd_o first_o two_o of_o which_o be_v long_o and_o narrow_a be_v call_v superiores_fw-la be_v on_o the_o basis_n of_o the_o brain_n dd_n brain_n fig_n 2._o dd_n arise_v according_a to_o he_o from_o the_o receptacula_fw-la sellae_fw-la aequinae_fw-la by_o the_o same_o author_n so_o name_v hereafter_o to_o be_v describe_v though_o more_o true_o from_o the_o ee_o circular_a sinus_n i_o ibid._n i_o as_o i_o hope_v in_o its_o place_n to_o make_v appear_v run_v down_o from_o thence_o upon_o the_o internal_a process_n of_o the_o os_fw-la petrosum_fw-la and_o terminate_n in_o the_o sinus_n laterales_fw-la where_o they_o begin_v to_o be_v declive_a and_o λ_n tortuous_a in_o their_o passage_n to_o the_o internal_a jugular_a λ._o ibid._n λ._o the_o other_o two_o called_z ee_fw-mi inferiores_fw-la ee_o ibid._n ee_o which_o be_v much_o short_a and_o wide_a than_o the_o other_o descend_v from_o the_o same_o place_n as_o the_o former_a between_o the_o os_fw-la petrosum_fw-la and_o occipitale_fw-it down_o to_o the_o aforesaid_a eight_o hole_n of_o the_o cranium_fw-la where_o the_o jugular_n come_v up_o into_o 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the_o plexus_fw-la on_o each_o side_n the_o second_o original_a be_v from_o the_o hindermost_a branch_n of_o that_o communicant_a artery_n ee_fw-fr fig_n 1._o second_v ee_fw-fr which_o run_v more_o backward_o ascend_v betwixt_o the_o hinder_a limb_n of_o the_o brain_n and_o the_o cerebellum_fw-la till_o it_o come_v to_o the_o isthmus_n where_o communicate_v with_o the_o first_o branch_n abovementioned_a they_o make_v a_o reticular_a broad_a expansion_n which_o cover_v both_o nates_n testes_fw-la and_o glandula_n pinealis_fw-la gg_n fig_n 5._o gg_n and_o constitute_v the_o second_o or_o other_o part_n of_o the_o plexus_fw-la choroeides_n the_o first_o branch_n begin_v to_o divide_v itself_o into_o divers_a network_n folding_n intersperse_v with_o gland_n somewhat_o what_o before_o it_o enter_v the_o ventricles_n 5._o ibid._n 5._o and_o continue_v such_o to_o its_o extremity_n on_o each_o side_n where_o they_o both_o under_o the_o fornix_n wind_n across_o the_o three_o ventricle_n into_o a_o mutual_a inosculation_n the_o second_o begin_v to_o assume_v the_o same_o shape_n or_o contexture_n as_o soon_o as_o it_o begin_v to_o enter_v the_o isthmus_n continue_v such_o throughout_o its_o entire_a abovementioned_a expansion_n these_o two_o on_o each_o side_n be_v join_v together_o by_o a_o twofold_a connexion_n the_o first_o be_v by_o a_o artery_n run_v under_o the_o bombyces_fw-la intervening_a betwixt_o they_o which_o can_v not_o be_v here_o insert_v so_o as_o to_o come_v in_o view_n the_o second_o be_v by_o a_o production_n of_o the_o pia_fw-la mater_fw-la which_o be_v extend_v all_o over_o these_o part_n of_o the_o lateral_a ventricles_n and_o the_o three_o ventricle_n which_o lie_v betwixt_o the_o first_o two_o part_n of_o the_o plexus_fw-la forward_o and_o down_o to_o the_o other_o two_o hinder_v part_n of_o the_o plexus_fw-la backward_o under_o the_o fornix_n and_o septum_fw-la lucidum_fw-la so_o that_o whatsoever_o water_n be_v transmit_v out_o of_o these_o ventricles_n must_v slip_v down_o not_o only_o under_o the_o fornix_n but_o that_o membranous_a production_n itself_o from_o which_o kind_n of_o structure_n and_o position_n of_o this_o membrane_n may_v probable_o be_v understand_v how_o there_o may_v happen_v such_o a_o hydrocephalus_n as_o the_o learned_a tulpius_n mention_n 24_o tulp_n lib._n 1._o cap._n 24_o in_o which_o there_o be_v find_v above_o two_o pound_n of_o water_n in_o one_o ventricle_n without_o any_o at_o all_o in_o the_o other_o and_o such_o another_o as_o wepfer_n mention_n 69_o wepf._n p._n 69_o where_o the_o water_n cause_v the_o hydrocephalus_n in_o a_o heifer_n be_v find_v contain_v in_o a_o cystis_n and_o that_o only_a in_o the_o left_a ventricle_n too_o for_o suppose_v this_o membranous_a production_n of_o the_o pia_fw-la mater_fw-la to_o be_v double_a here_o as_o it_o certain_o be_v in_o all_o other_o place_n it_o be_v not_o difficult_a to_o conceive_v that_o the_o water_n which_o be_v extravasated_a must_v needs_o insinuate_v itself_o betwixt_o the_o two_o lamina_n till_o by_o a_o continual_a increase_n it_o extend_v they_o into_o the_o shape_n of_o a_o large_a bladder_n such_o a_o one_o as_o the_o latter_a find_v there_o and_o draw_v out_o with_o his_o finger_n and_o that_o which_o seem_v to_o put_v out_o of_o all_o controversy_n that_o it_o be_v so_o be_v that_o in_o those_o place_n both_z above_z towards_o the_o corpus_fw-la callosum_fw-la and_o below_o on_o the_o basis_n of_o the_o ventricle_n he_o find_v some_o sort_n of_o asperity_n as_o though_o the_o bladder_n fill_v with_o water_n have_v be_v cover_v with_o some_o small_a protuberance_n not_o much_o unlike_a to_o white_a poppy-seed_n in_o those_o place_n where_o it_o be_v contiguous_a to_o they_o which_o protuberance_n doubtless_o be_v the_o small_a gland_n interspersed_a quite_o through_o this_o plexus_fw-la how_o this_o distemper_n come_v to_o be_v on_o one_o side_n only_o though_o sometime_o it_o be_v on_o both_o as_o you_o may_v see_v in_o another_o place_n of_o the_o aforesaid_a tulpius_n may_v likely_a enough_o be_v from_o a_o adnascency_n of_o both_o the_o lamina_n of_o this_o membranous_a production_n 1._o willis_n p._n 10_o col_fw-fr 2._o par_fw-fr 1._o in_o that_o place_n where_o the_o septum_fw-la lucidum_fw-la sink_v down_o from_o the_o fornix_n occasion_v by_o some_o small_a sort_n of_o pressure_n of_o the_o superincumbent_a brain_n beside_o these_o vein_n which_o be_v very_o true_o describe_v by_o willis_n i_o have_v always_o find_v two_o more_o meet_v the_o foremost_a extremity_n of_o this_o plexus_fw-la from_o between_o the_o two_o first_o lobe_n of_o the_o brain_n where_o it_o seem_v to_o end_v under_o the_o foremost_a part_n of_o the_o corpora_fw-la striata_fw-la by_o which_o it_o be_v there_o fix_a and_o as_o it_o be_v keep_v in_o its_o due_a situation_n and_o from_o these_o branch_n be_v on_o each_o side_n send_v forth_o many_o more_o little_a one_o to_o the_o corpora_fw-la striata_fw-la and_o several_a other_o part_n adjacent_a to_o this_o plexus_fw-la belong_v also_o vein_n which_o from_o the_o extremity_n of_o that_o part_n of_o it_o in_o the_o lateral_a ventricles_n begin_v to_o come_v into_o two_o distinct_a pretty_a large_a trunk_n hh_n fig_n 5._o hh_n run_v down_o through_o the_o middle_n of_o the_o three_o ventricle_n as_o far_o as_o the_o four_o sinus_n and_o there_o receive_v some_o branch_n from_o the_o other_o hinder_a part_n of_o the_o plexus_fw-la spread_v over_o the_o isthmus_n discharge_v the_o refluent_a blood_n into_o that_o sinus_n but_o beside_o this_o sort_n of_o reductory_n vessel_n qq_n ibid._n qq_n it_o have_v also_o another_o viz._n lymphduct_n which_o i_o first_o discover_v in_o the_o brain_n of_o a_o strangle_a body_n and_o show_v to_o several_a then_o present_a run_v in_o different_a ramisication_n among_o the_o reticulated_a vessel_n and_o gland_n of_o this_o part_n which_o observation_n be_v add_v to_o that_o of_o the_o great_a anatomist_n anthony_n nuck_v who_o in_o that_o curious_a piece_n call_v adenogrophia_n say_v 150._o nuc._n p._n 150._o he_o see_v one_o come_v from_o the_o glandula_n pinealis_fw-la and_o that_o his_o friend_n another_o anatomist_n who_o name_n he_o mention_n not_o but_o i_o know_v it_o be_v one_o bodivol_n who_o i_o have_v the_o happiness_n to_o be_v very_o well_o acquaint_v withal_o now_o dead_a send_v he_o word_n he_o see_v another_o not_o far_o from_o the_o aforesaid_a place_n may_v be_v of_o sufficient_a authority_n to_o evince_v the_o real_a existence_n of_o these_o vessel_n hitherto_o so_o much_o inquire_v after_o in_o the_o brain_n as_o well_o as_o in_o other_o part_n of_o the_o body_n the_o gland_n belong_v to_o this_o plexus_fw-la be_v very_o many_o but_o very_o small_a and_o their_o use_n according_a to_o all_o the_o modern_n especial_o willis_n duncan_n and_o vieussenius_fw-la to_o carry_v off_o the_o redundant_fw-la watery_a part_n of_o the_o blood_n but_o that_o without_o ever_o show_v by_o what_o rational_a contrivance_n of_o structure_n it_o can_v be_v do_v see_v none_o of_o they_o ascribe_v a_o secretory_a dust_n which_o must_v always_o be_v in_o readiness_n when_o any_o unprofitable_a part_n be_v to_o be_v discharge_v since_o therefore_o this_o part_n be_v find_v furnish_v with_o lymphduct_n it_o will_v be_v no_o hard_a matter_n to_o conceive_v the_o genuine_a use_n of_o the_o gland_n which_o be_v to_o separate_v a_o rich_a nutritious_a juice_n from_o the_o influent_a blood_n and_o by_o the_o lymphduct_n to_o refund_v it_o to_o the_o refluent_a after_o the_o loss_n of_o its_o noble_a part_n leave_v behind_o in_o the_o brain_n in_o its_o passage_n to_o the_o heart_n again_o it_o may_v also_o for_o aught_o i_o know_v according_a to_o the_o opinion_n of_o willis_n serve_v to_o warm_v its_o neighbour_a part_n the_o internal_a superficies_n of_o the_o brain_n which_o be_v pure_o medullary_n have_v not_o so_o plentiful_a a_o share_n of_o blood-vessel_n disperse_v through_o it_o as_o the_o rest_n and_o consequent_o to_o maintain_v a_o equality_n of_o warmth_n conduce_v so_o much_o to_o the_o conserve_n the_o spirit_n in_o their_o due_a vigour_n and_o exercise_n must_v borrow_v a_o additional_a supply_n from_o hence_o it_o be_v situate_v upon_o the_o middle_n of_o the_o thalami_fw-la nervorum_fw-la opticorum_fw-la all-along_a they_o length_n way_n and_z contrary_a to_o what_o willis_n say_v be_v by_o virtue_n of_o several_a blood-vessel_n join_v to_o that_o medullary_a part_n of_o the_o brain_n so_o call_v immediate_o lie_v under_o it_o chap._n viii_o of_o the_o rete_fw-la mirabile_n notwithstanding_o the_o opinion_n of_o the_o late_a wepfer_n willis_n and_o vieussenius_fw-la too_o which_o then_o last_v indeed_o though_o but_o now_o and_o then_o be_v willing_a to_o allow_v it_o a_o existence_n only_o in_o man_n who_o nevertheless_o if_o the_o supposition_n of_o willis_n be_v true_a viz._n that_o such_o can_v but_o be_v fool_n have_v better_o be_v without_o it_o 2._o willis_n p._n 2d_o col_fw-fr 2._o
tunnel_n as_o well_o as_o by_o reason_n also_o of_o the_o parity_n of_o their_o uses_n the_o ancient_n give_v the_o name_n of_o infundibulum_fw-la in_o man_n it_o be_v close_o invert_v with_o the_o pia_fw-la mater_fw-la at_o its_o very_a entrance_n into_o the_o gland_n and_o from_o that_o place_n have_v not_o any_o manifest_a cavity_n i_o can_v discover_v by_o blast_n or_o style_n but_o be_v altogether_o of_o a_o medullary_a substance_n contrary_a to_o what_o it_o be_v in_o sheep_n or_o calf_n in_o which_o last_o creature_n where_o the_o part_n be_v large_a by_o insert_v a_o blow-pipe_n into_o that_o part_n of_o the_o infundibulum_fw-la next_o to_o the_o gland_n i_o have_v see_v its_o further_a tract_n or_o passage_n on_o the_o upper_a part_n thereof_o a_o little_a puff_v up_o and_o a_o considerable_a quantity_n of_o water_n regurgitate_v as_o though_o it_o have_v lie_v contain_v either_o in_o some_o pipe_n or_o porulous_a substance_n of_o that_o gland_n this_o difference_n be_v not_o take_v notice_n of_o by_o vieussenius_fw-la and_o therefore_o what_o he_o say_v of_o this_o part_n seem_v chief_o in_o this_o respect_n if_o not_o altogether_o applicable_a to_o the_o structure_n it_o have_v in_o men._n those_o two_o division_n or_o ramification_n of_o this_o part_n the_o say_a author_n mention_n 3._o vieussen_n p._n 49._o par_fw-fr 3._o one_o forward_o and_o the_o other_o backward_o in_o sheep_n calf_n etc._n etc._n i_o have_v always_o find_v correspondent_a to_o the_o description_n he_o there_o give_v of_o they_o but_o whether_o the_o first_o be_v protend_v so_o and_o terminate_v after_o the_o manner_n he_o there_o describe_v i_o somewhat_o scruple_n see_v i_o have_v always_o observe_v the_o extremity_n of_o that_o part_n in_o brute_n towards_o the_o foremost_a part_n of_o the_o gland_n sink_v as_o it_o be_v into_o the_o very_a substance_n thereof_o and_o afterward_o become_v present_o altogether_o imperceptible_a and_o in_o man_n the_o termination_n thereof_o just_a after_o the_o same_o manner_n save_v only_o that_o in_o the_o last_o it_o happen_v forthwith_o upon_o its_o approach_n to_o the_o gland_n without_o be_v protend_v either_o backward_o or_o forward_o the_o use_n of_o this_o part_n be_v certain_o to_o convey_v some_o sort_n of_o humidity_n from_o that_o great_a concamerated_a cavity_n within_o the_o brain_n result_v from_o its_o inward_a complication_n of_o part_n to_o the_o pituitary_a gland_n and_o the_o office_n of_o it_o be_v to_o receive_v and_o carry_v off_o this_o transmit_v humidity_n but_o as_o to_o how_o either_o this_o humidity_n be_v collect_v in_o the_o aforesaid_a cavity_n or_o how_o when_o convey_v into_o the_o gland_n it_o be_v carry_v off_o we_o be_v still_o as_o much_o in_o the_o dark_a as_o ever_o i_o know_v very_o well_o there_o be_v nothing_o more_o easy_a with_o the_o visionary_a philosopher_n than_o such_o a_o knack_n as_o this_o and_o now_o i_o think_v on_o it_o the_o great_a willis_n make_v nothing_o of_o turn_v a_o vein_n into_o a_o lymphoeduct_v in_o the_o glandula_n pinealis_fw-la and_o plexus_fw-la choroeides_n 46._o will._n p._n 46._o no_o less_o than_o which_o do_v also_o the_o accurate_a vieussenius_fw-la 3._o vieus_n p._n 110_o par_fw-fr 3._o in_o the_o plexus_fw-la belong_v to_o the_o four_o ventricle_n but_o how_o consonant_a this_o be_v to_o the_o rational_a structure_n or_o mechanism_n of_o part_n neither_o the_o one_o or_o the_o other_o have_v be_v so_o kind_a as_o to_o explain_v now_o as_o to_o the_o plexus_fw-la and_o gland_n before_o mention_v it_o be_v evident_a by_o what_o have_v be_v already_o discover_v and_o according_o give_v a_o account_n of_o in_o the_o precede_a page_n they_o be_v furnish_v with_o lymphoeduct_n as_o proper_a reductory_n vessel_n so_o that_o so_o far_o the_o prophecy_n be_v vanish_v but_o as_o to_o the_o remain_a gland_n i_o be_o not_o so_o fond_a of_o guess_v to_o say_v it_o have_v any_o and_o consequent_o all_o i_o can_v say_v be_v that_o as_o i_o look_v upon_o the_o infundibulum_fw-la to_o be_v no_o more_o than_o a_o large_a lymphoeduct_v various_o ramify_v through_o the_o glandula_n pituitaria_fw-la discharge_v its_o liquor_n by_o those_o many_o small_a branch_n into_o the_o vein_n disperse_v through_o that_o part_n to_o be_v reduce_v after_o the_o manner_n it_o be_v in_o all_o other_o secretory_n gland_n back_n to_o the_o blood_n gain_v and_o that_o which_o seem_v most_o to_o favour_n this_o conjecture_n be_v the_o extraordinary_a humidity_n of_o this_o gland_n especial_o in_o brute_n above_o the_o rest_n of_o the_o whole_a body_n as_o serve_v not_o only_a to_o export_v what_o lympha_fw-la be_v separate_v from_o several_a artery_n disperse_v through_o it_o but_o that_o also_o which_o it_o be_v charge_v with_o from_o the_o brain_n itself_o and_o to_o this_o twofold_a manner_n or_o double_a office_n of_o secretion_n be_v owe_v the_o two_o distinct_a substance_n it_o seem_v to_o consist_v of_o the_o one_o be_v accommodate_v to_o that_o part_n of_o the_o lympha_fw-la come_v from_o the_o brain_n and_o be_v therefore_o whitish_a the_o other_o to_o that_o separate_a immediate_o out_o of_o the_o blood_n and_o be_v therefore_o red_a last_o as_o to_o the_o manner_n how_o the_o lympha_fw-la pass_v down_o through_o the_o infundibulum_fw-la pass_v down_o through_o the_o infundibulum_fw-la from_o the_o brain_n to_o the_o glandula_n pituitaria_fw-la i_o look_v upon_o it_o to_o be_v in_o the_o form_n of_o condense_a vapour_n arise_v from_o the_o artery_n of_o the_o plexus_fw-la choroeides_n emit_v thence_o for_o the_o keep_n moist_a and_o in_o good_a order_n that_o inward_a production_n of_o the_o pia_fw-la mater_fw-la spread_v all_o over_o its_o parietes_fw-la which_o be_v a_o membranous_a dry_a part_n of_o itself_o may_v otherwise_o become_v injurious_a to_o that_o fine_a medullary_n part_n lie_v under_o and_o be_v contiguous_a to_o it_o in_o which_o there_o be_v a_o continual_a motion_n of_o animal_n spirit_n who_o tract_n and_o consequent_o they_o themselves_o through_o any_o the_o least_o intemperance_n of_o this_o membrane_n will_v be_v in_o great_a danger_n of_o either_o some_o obstruction_n or_o disorder_n and_o that_o this_o lympha_fw-la be_v only_a the_o result_n of_o the_o aforesaid_a vapour_n i_o be_o the_o more_o ready_o incline_v to_o believe_v because_o i_o never_o see_v water_n in_o that_o part_n of_o any_o sound_a brain_n nor_o unsound_a neither_o where_o the_o plexus_fw-la choroeides_n be_v firm_a and_o there_o be_v no_o reasonable_a ground_n by_o the_o extravasation_n of_o serum_n in_o some_o other_o remote_a part_n of_o the_o brain_n to_o believe_v it_o have_v its_o rise_n from_o thence_o chap._n x._o of_o the_o glandula_n pinealis_fw-la the_o gland_n call_v pinealis_fw-la from_o its_o figure_n be_v about_o the_o bigness_n of_o a_o ordinary_a pea_n prefix_v to_o the_o two_o prominency_n call_v nates_n hereafter_o to_o be_v describe_v at_o the_o end_n of_o the_o three_o ventricle_n immediate_o under_o the_o broad_a and_o hinder_a part_n of_o the_o fornix_n with_o which_o nevertheless_o it_o have_v no_o connexion_n 71._o vieuss_n p._n 71._o as_o vieussenius_fw-la say_v it_o have_v and_o over_o that_o part_n of_o the_o rima_n in_o the_o three_o ventricle_n call_v anus_fw-la it_o be_v join_v to_o the_o nates_n by_o several_a fibrous_a root_n and_o become_v a_o support_n to_o that_o part_n of_o the_o plexus_fw-la choroeides_n there_o situate_a in_o a_o hydropical_a brain_n of_o a_o strumou_n boy_n i_o have_v see_v it_o swell_v to_o a_o size_n of_o three_o time_n its_o ordinary_a magnitude_n and_o by_o reason_n of_o the_o abundance_n of_o stagnate_n gelatinous_a lympha_fw-la contain_v in_o it_o perfect_o transparent_a hence_o it_o must_v plain_o appear_v that_o this_o part_n be_v a_o mere_a gland_n and_o by_o what_o be_v say_v before_o conformable_a to_o what_o have_v be_v observe_v in_o this_o hydropic_a brain_n of_o the_o conglobate_n or_o lymphatic_a kind_n and_o by_o consequence_n a_o very_a unfit_a part_n to_o be_v make_v a_o receptacle_n of_o animal_n spirit_n 71._o vieus_n p._n 71._o as_o vieussenius_fw-la make_v it_o and_o much_o more_o a_o place_n of_o residence_n for_o the_o soul_n according_a to_o des_n chartes_n it_o be_v true_a there_o be_v two_o fair_a medullary_n tract_n arise_v seem_o from_o the_o two_o root_n of_o the_o fornix_n stretch_v length-way_n upon_o the_o thalami_fw-la nervorum_fw-la opticorum_fw-la as_o far_o back_o as_o this_o gland_n by_o vieussenius_fw-la call_v as_o this_o gland_n 3._o vieuss_n p._n 6â—_n par_fw-fr 3._o by_o vieussenius_fw-la call_v tractatus_fw-la medullaris_fw-la nervorum_fw-la opticorum_fw-la thalamis_fw-la interjectus_fw-la as_o though_o it_o be_v only_o one_o and_o according_o be_v so_o delineate_v by_o he_o tab._n 7._o gg_n but_o indeed_o be_v two_o one_o on_o each_o side_n about_o which_o place_n they_o turn_v in_o and_o by_o a_o transverse_a bend_a kind_n of_o a_o process_n by_o the_o same_o
be_v that_o of_o instinct_n relate_v to_o the_o sensative_a soul_n or_o a_o aptitude_n of_o the_o nervous_a structure_n to_o act_v according_a to_o the_o impression_n make_v upon_o the_o nerve_n either_o from_o within_o or_o from_o without_o and_o so_o may_v be_v say_v to_o depend_v on_o the_o presence_n of_o such_o cause_n as_o be_v supervenient_a and_o extraneous_a to_o nature_n suitable_a to_o the_o impression_n whereof_o the_o animal_n either_o pursue_v or_o avoid_v the_o object_n obey_v or_o resist_v the_o impulse_n now_o i_o take_v it_o for_o grant_v that_o no_o body_n will_v deny_v but_o that_o the_o nerve_n by_o virtue_n whereof_o these_o last_o action_n of_o instinct_n be_v perform_v whether_o thâ—y_v â—râ—se_v from_o the_o cerebrum_fw-la of_o cerebellum_fw-la be_v equal_o under_o the_o command_n of_o the_o soul_n or_o else_o as_o i_o say_v before_o the_o brain_n in_o those_o creature_n be_v to_o no_o purpose_n and_o of_o this_o sort_n i_o reckon_v all_o those_o action_n in_o rational_a creature_n of_o instinct_n before_o they_o have_v attain_v to_o the_o use_n of_o their_o understanding_n from_o any_o sort_n of_o impression_n or_o inadvertent_n and_o inconsult_v when_o he_o have_v the_o control_a power_n of_o reason_n allow_v he_o and_o make_v no_o use_n of_o it_o such_o as_o be_v call_v habitual_a which_o at_o first_o be_v produce_v by_o command_n of_o the_o rational_a part_n only_o but_o through_o frequent_a repetition_n at_o last_o without_o any_o command_n from_o that_o out_o of_o a_o blind_a obedience_n to_o a_o bare_a impulse_n from_o the_o object_n or_o last_o such_o as_o happen_v when_o he_o have_v altogether_o lose_v the_o use_n of_o it_o as_o in_o sleep_n or_o distraction_n in_o which_o last_o case_n it_o will_v be_v very_o difficult_a to_o distinguish_v he_o from_o a_o mere_a machine_n or_o automaton_n now_o from_o what_o have_v be_v say_v i_o can_v but_o think_v it_o plain_a that_o many_o of_o the_o action_n before_o speak_v of_o in_o dr._n willis_n sense_n by_o he_o call_v involuntary_a as_o proceed_v from_o the_o dominion_n of_o the_o cerebellum_fw-la only_o such_o as_o he_o call_v the_o various_a configuration_n of_o the_o face_n from_o some_o impulse_n or_o provocation_n in_o the_o viscera_n or_o elsewhere_o erect_v the_o ear_n turn_v the_o neck_n and_o eye_n about_o sudden_a shriek_n and_o outcry_n upon_o some_o extraordinary_a frightful_a object_n surprise_o affect_v one_o sense_n or_o another_o furnish_v with_o either_o such_o nerve_n as_o he_o suppose_v to_o be_v altogether_o under_o the_o command_n of_o the_o cerebellum_fw-la as_o the_o five_o and_o seven_o or_o else_o to_o have_v a_o very_a near_o correspondence_n with_o that_o part_n by_o virtue_n of_o vicinity_n as_o the_o nine_o do_v more_o true_o proceed_v from_o that_o perceptive_a faculty_n or_o to_o use_v his_o own_o word_n that_o part_n of_o the_o soul_n he_o have_v confine_v to_o that_o part_n of_o the_o medullary_n system_n call_v the_o cerebrum_fw-la inasmuch_o as_o in_o reasonable_a creature_n they_o may_v and_o common_o be_v suspend_v as_o well_o as_o the_o nerve_n they_o slow_a from_o sometime_o make_v use_n of_o as_o instrument_n of_o voluntary_a motion_n by_o it_o also_o and_o to_o think_v the_o contrary_a be_v as_o much_o as_o to_o say_v that_o when_o any_o body_n happen_v to_o express_v any_o of_o the_o aforementioned_a involuntary_a act_n or_o but_o hit_v his_o bedfellow_n a_o box_n of_o the_o ear_n whilst_o asleep_o all_o these_o must_v be_v allow_v to_o proceed_v only_o from_o the_o organ_n of_o involuntary_a motion_n call_v the_o cerebellum_fw-la and_o of_o this_o kind_n also_o in_o a_o great_a measure_n i_o reckon_v respiration_n concern_v which_o i_o can_v easy_o be_v bring_v to_o think_v it_o satisfactory_o explain_v by_o dr._n willis_n from_o the_o energy_n of_o those_o animal_n spirit_n which_o flow_v only_o from_o the_o cerebellum_fw-la in_o the_o par_fw-fr vagum_fw-la after_o the_o same_o manner_n they_o do_v to_o the_o heart_n by_o the_o intercostal_n and_o that_o pair_n for_o its_o pulsation_n and_o as_o only_o under_o the_o command_n of_o the_o soul_n to_o be_v stop_v now_o and_o then_o as_o it_o please_v by_o virtue_n of_o some_o nerve_n communicate_v to_o the_o intercostal_n muscle_n and_o diaphragm_n the_o chief_a instrument_n of_o breathe_v from_o the_o spina_n dorsi_fw-la i_o be_o therefore_o rather_o incline_v to_o think_v this_o motion_n be_v of_o the_o other_o different_a kind_n before_o speak_v of_o under_o the_o title_n of_o instinct_n proceed_v from_o a_o extraneous_a supervenient_a cause_n act_v conformable_o to_o the_o course_n of_o nature_n in_o ooth_a case_n of_o the_o same_o kind_n as_o in_o hunger_n and_o thirst_n and_o the_o like_a where_o the_o obtain_v the_o design_a end_n or_o effect_n render_v the_o part_n from_o whence_o come_v the_o motion_n for_o some_o time_n insensible_a of_o the_o impression_n and_o where_o after_o the_o cease_v of_o the_o effect_n or_o motion_n the_o sense_n of_o the_o impression_n revive_v again_o whence_o there_o happen_v a_o equal_a reciprocation_n between_o the_o sense_n and_o fruition_n or_o sense_n and_o motion_n to_o apply_v this_o account_n of_o the_o manner_n and_o reason_n of_o the_o spirit_n act_v upon_o the_o stomach_n and_o parâ—â—te_n in_o relation_n to_o hunger_n and_o thirst_n to_o that_o of_o the_o systole_n and_o diastole_n of_o the_o lung_n or_o respiration_n it_o will_v be_v needful_a to_o take_v notice_n that_o in_o a_o infant_n unborn_a there_o be_v no_o respiration_n but_o yet_o there_o be_v a_o cerebellum_fw-la and_o that_o if_o this_o sort_n of_o motion_n call_v instinct_n which_o i_o make_v to_o differ_v from_o pure_o natural_a motion_n such_o as_o be_v contemporary_a with_o even_o the_o first_o live_v rudiment_n of_o the_o individual_a be_v altogether_o and_o sole_o owe_v to_o the_o cerebellum_fw-la after_o the_o manner_n of_o that_o of_o the_o heart_n then_o of_o necessity_n the_o child_n in_o the_o womb_n ought_v to_o respire_v but_o be_v satisfy_v of_o the_o contrary_a it_o remain_v that_o we_o account_v for_o its_o respiration_n another_o way_n which_o be_v as_o afore_o note_v through_o the_o presence_n or_o absence_n of_o the_o first_o move_v cause_n or_o impulse_n which_o i_o make_v or_o suppose_v to_o be_v any_o thing_n impress_v the_o nerve_n propagate_v through_o the_o organ_n of_o breathe_v so_o as_o to_o transmit_v the_o impression_n from_o within_o to_o the_o perceptive_a faculty_n preside_v both_o over_o the_o cerebrum_fw-la and_o cerebellum_fw-la too_o to_o the_o end_n the_o spirit_n may_v from_o thence_o forthwith_o be_v command_v into_o such_o other_o nerve_n as_o act_v those_o muscle_n which_o serve_v for_o enlarge_a the_o whole_a cavity_n of_o the_o thorax_n in_o order_n to_o let_v the_o air_n into_o the_o lung_n more_o plentiful_o which_o be_v the_o thing_n aim_v at_o by_o nature_n and_o these_o be_v the_o intercostal_n muscle_n and_o diaphragm_n now_o it_o be_v easy_a to_o conceive_v that_o whilst_o the_o child_n be_v enclose_v in_o its_o mother_n belly_n there_o be_v not_o that_o occasion_n for_o respiration_n as_o when_o it_o be_v bear_v the_o main_a stream_n of_o blood_n all_o that_o while_o find_v no_o passage_n through_o they_o and_o that_o which_o do_v by_o the_o ruyshian_a artery_n make_v of_o juice_n much_o more_o mild_a and_o cool_a the_o native_a heat_n be_v little_a and_o the_o aliment_n mere_a chyle_n or_o milk_n from_o whence_o it_o fall_v out_o that_o the_o pulmoniâ—k_a nerve_n go_v altogether_o unprovoke_v which_o after_o birth_n be_v continual_o otherwise_o impress_v or_o provoke_v by_o the_o hot_a effluvium_n of_o blood_n new_o breed_v of_o strong_a food_n and_o by_o a_o strong_a native_a heat_n and_o whole_o flow_v through_o they_o which_o heat_n continual_o as_o the_o child_n acquire_v a_o great_a maturity_n increase_a may_v for_o aught_o i_o know_v not_o a_o little_a contribute_v by_o way_n of_o natural_a impulse_n to_o its_o exclusion_n the_o truth_n of_o this_o will_v the_o more_o clear_o appear_v to_o any_o who_o will_v take_v the_o pain_n to_o consider_v well_o of_o the_o structure_n of_o part_n in_o child_n unborn_a in_o who_o the_o usual_a circuit_n of_o blood_n through_o the_o lung_n which_o be_v design_v for_o rarify_n and_o perfect_v the_o mixture_n of_o blood_n and_o chyle_n be_v deny_v as_o also_o through_o the_o liver_n serve_v chief_o for_o separate_v that_o gross_a excrement_n the_o gall_n not_o breed_v at_o least_o in_o any_o proportion_n in_o a_o infant_n unborn_a and_o in_o lieu_n of_o these_o other_o passage_n which_o become_v altogether_o unnecessary_a after_o birth_n provide_v by_o nature_n after_o a_o short_a and_o more_o compendious_a way_n viz_o by_o the_o foramen_fw-la ovale_n betwixt_o the_o vena_fw-la cava_fw-la and_o vena_fw-la pulmon_n and_o tubulus_n arteriosus_n between_o the_o art_n pulm._n and_o aorta_n in_o the_o lung_n and_o
a_o it_o be_v trunk_n b_o it_o be_v ganglion_n c_o it_o be_v first_o or_o superior_a branch_n go_v out_o at_o the_o second_o hole_n of_o the_o cranium_fw-la d_o its_o second_o or_o middle_a branch_n go_v out_o at_o the_o second_o hole_n e_o its_o three_o or_o hindermost_a branch_n go_v out_o at_o the_o five_o hole_n fig_n iv_o show_v the_o superior_a and_o lateral_a sinus_n of_o the_o dura_n mater_n open_v after_o they_o have_v be_v inject_v with_o wax_n a_o a_o the_o three_o or_o longitudinal_n sinus_n b_o b_o the_o first_o and_o second_o or_o lateral_a sinus_n c_o the_o four_o sinus_n d_o d_o d_o a_o vein_n run_v on_o each_o side_n of_o the_o three_o sinus_n eeee_o mouth_n of_o vein_n open_v into_o the_o longitudinal_n sinus_n of_o the_o dura_n mater_n after_o a_o contrary_a manner_n one_o to_o the_o other_o f_o f_o the_o five_o sinus_n at_o the_o bottom_n of_o the_o falx_n g_o the_o torcular_a where_o all_o the_o superior_a and_o lateral_a sinus_n meet_v h_z h_z the_o tortuous_a part_n of_o the_o lateral_a sinus_n run_v under_o the_o cerebellum_fw-la i_o i_o the_o vein_n enter_v the_o four_o sinus_n from_o the_o plexus_fw-la choroeides_n k_o the_o place_n where_o the_o four_o sinus_n arise_v **_o the_o specus_fw-la or_o round_a hole_n at_o which_o the_o lateral_a sinus_n on_o each_o side_n go_v out_o into_o the_o internal_a jugular_a vein_n l_o l_o two_o large_a vein_n whereof_o one_o enter_v the_o four_o sinus_n upon_o the_o second_o process_n of_o the_o dura_n mater_n so_o as_o to_o resist_v the_o course_n of_o the_o blood_n in_o that_o sinus_n in_o its_o ascent_n to_o the_o torcular_a the_o other_o upon_o the_o same_o process_n so_o as_o to_o hinder_v its_o descent_n to_o the_o internal_a jugular_a contrary_a to_o a_o conformation_n of_o vessel_n which_o vieussenius_fw-la mention_n in_o his_o three_o table_n h_n h._n mmm_o transverse_n chordal_a ligament_n in_o the_o longitudinal_n and_o lateral_a sinus_n n_z n_z part_n of_o the_o dura_n mater_n on_o each_o side_n of_o the_o longitudinal_n sinus_n o_o o_o portion_n of_o the_o pia_fw-la mater_fw-la pp_n &c_n &c_n divers_a small_a vein_n on_o the_o dura_n mater_n which_o enter_v those_o that_o run_v on_o the_o side_n of_o the_o longitudinal_n sinus_n according_a to_o its_o length_n qq_n &c_n &c_n the_o vein_n of_o the_o cerebrum_fw-la as_o they_o appear_v under_o the_o pia_fw-la mater_fw-la before_o they_o enter_v the_o longitudinal_n sinus_n r_o r_o the_o falcate_v process_n with_o its_o vein_n which_o enter_v the_o five_o sinus_n s_o s_o the_o second_o process_n of_o the_o dura_n mater_n †_o †_o the_o beginning_n of_o the_o jugular_a vein_n fig_n v._o represent_v the_o brain_n in_o a_o middle_a section_n the_o blood-vessel_n be_v first_o inject_v with_o wax_n a_o a_o the_o fornix_n cut_v off_o at_o its_o root_n and_o turn_v back_o b_o b_o its_o root_n at_o the_o begin_n of_o the_o thalami_fw-la nervorum_fw-la opticorum_fw-la cc_o etc._n etc._n the_o thalami_fw-la nervorum_fw-la opticorum_fw-la d_o d_o that_o part_n of_o the_o crura_fw-la fornicis_fw-la which_o grow_v somewhat_o thick_a as_o it_o turn_v off_o towards_o the_o lateral_a ventricles_n run_v over_o the_o crura_fw-la medulla_n oblongata_fw-la which_o be_v very_o prominent_a in_o sheep_n and_o calf_n help_v to_o thrust_v it_o up_o into_o such_o a_o protuberance_n as_o the_o ancient_n call_v bombyces_fw-la or_o hyppocampi_fw-la e_o e_o that_o part_n of_o the_o plexus_fw-la choroeides_n which_o be_v make_v of_o the_o first_o branch_n of_o the_o cervical_a artery_n sometime_o seem_v as_o though_o it_o come_v from_o the_o communicant_a branch_n in_o the_o lateral_a ventricles_n f_o the_o place_n where_o those_o two_o plexus_n on_o each_o side_n meet_v under_o the_o fornix_n g_o g_o that_o other_o part_n of_o the_o plexus_fw-la which_o be_v make_v of_o the_o second_o branch_n of_o the_o cervical_a artery_n join_v with_o the_o first_o by_o a_o communicant_a branch_n not_o to_o be_v see_v here_o lie_v under_o the_o crura_fw-la fornicis_fw-la which_o be_v expanded_a all_o over_o the_o isthmus_n become_v glandulous_a near_o to_o and_o especial_o under_o the_o â—â—aâ—dâ—la_fw-la pinealis_fw-la cover_v here_o with_o the_o fornix_n h_z h_z two_o large_a vein_n come_v from_o the_o top_n of_o the_o upper_a part_n of_o the_o plexus_fw-la down_o to_o the_o other_o branch_n of_o the_o plexus_fw-la all_o the_o length_n of_o the_o three_o ventricle_n and_o then_o terminate_v in_o the_o the_o four_o sinus_n i_o i_o the_o trunk_n of_o several_a artery_n appear_v as_o they_o be_v cut_v off_o in_o divide_v the_o medullary_n †_o and_o cineritious_a *_o part_n of_o the_o brain_n k_o k_o a_o venous_a branch_n of_o each_o side_n enter_v the_o plexus_fw-la choroeides_n from_o whence_o there_o be_v many_o slip_v branch_v upon_o the_o corpora_fw-la striata_fw-la δ_n δ_n the_o corpora_fw-la striata_fw-la whole_a l_o the_o rima_n of_o the_o three_o ventricle_n m_o m_o a_o long_a medullary_n tract_n between_o the_o thalami_fw-la nervorum_fw-la opticorum_fw-la and_o corpora_fw-la striata_fw-la nn_n etc._n etc._n the_o centrum_fw-la ovale_n of_o vieussenius_fw-la o_o the_o four_o sinus_n of_o the_o dur._n mater_n p_o the_o torcular_a where_o the_o four_o and_o sometime_o five_o sinus_n meet_a q_o q_o the_o lateral_a sinus_n r_o a_o large_a vein_n enter_v the_o lat._n sinus_n on_o one_o side_n ss_z etc._n etc._n the_o cerebellum_fw-la cover_v with_o the_o second_o process_n of_o the_o dura_n mater_n on_o its_o uppermost_a part_n t_o t_o the_o vertebral_n artery_n v_o five_o the_o vertebral_n sinus_n w_n the_o medulla_n spinalis_fw-la with_o its_o integument_n x_o x_o the_o style_n support_v the_o large_a vein_n of_o the_o plexus_fw-la choroeides_n in_o the_o three_o ventricle_n q_o q_o the_o lymphduct_n of_o the_o plexus_fw-la choroeides_n y_fw-fr y_fw-fr two_o of_o the_o cervical_a nerve_n spring_v from_o the_o medulla_n oblongata_fw-la †_o †_o etc._n etc._n the_o medullary_a part_n of_o the_o brain_n **_o etc._n etc._n the_o cineritious_a part_n fig_n vi_o be_v a_o draught_n of_o the_o annular_a protuberance_n med._n spinalis_fw-la etc._n etc._n cut_v through_o the_o middle_a lengthway_n a_o a_o the_o crura_fw-la medulla_n oblongata_fw-la b_o b_o the_o annular_a process_n or_o pons_n varolii_n divide_v c_o c_o the_o transverse_a striae_fw-la e_o e_o the_o intervening_a medullary_n tract_n in_o which_o the_o striae_fw-la terminate_v on_o each_o side_n f_o f_o the_o three_o or_o chordal_a process_n of_o dr._n willis_n h_o the_o spinal_a marrow_n i_o i_o some_o part_n of_o the_o cerebellum_fw-la k_o k_o the_o second_o process_n of_o the_o cerebellum_fw-la which_o compose_v the_o annular_a protuberance_n l_o l_o the_o cineritious_a part_n of_o the_o medulla_n oblongata_fw-la fig_n vii_o be_v the_o cerebellum_fw-la cut_v through_o on_o its_o hinder_a part_n and_o recline_v lateral_o a_o a_o the_o cerebellum_fw-la b_o b_o the_o arboreous_a ramification_n of_o the_o meditallium_n of_o the_o cerebellum_fw-la appear_v be_v cut_v right_o downward_o c_o c_o the_o pathetic_a nerve_n c_o c_o the_o nates_n d_o d_o the_o testes_fw-la e_o the_o transverse_a process_n whence_o the_o pathetic_a pair_n have_v their_o original_n f_o the_o glandula_n pinealis_fw-la g_o g_o the_o first_o process_n of_o the_o cerebellum_fw-la run_v from_o it_o to_o the_o nates_n here_o extend_v lateral_o h_z h_z the_o three_o or_o chordal_a process_n i_o i_o the_o transverse_a medullary_n process_n in_o the_o 4_o vent_n from_o whence_o the_o soft_a branch_n of_o the_o 7_o n._n have_v it_o original_n k_o k_o the_o medullary_a process_n descend_v from_o the_o transverse_a process_n behind_o the_o testes_fw-la down_o to_o the_o aforementioned_a other_o medullary_n transverse_a process_n l_o l_o the_o original_n of_o that_o process_n a_o little_a too_o low_a m_o m_o the_o eight_o pair_n of_o nerve_n n_z the_o calamus_fw-la script_n or_o extremity_n of_o the_o four_o ventricle_n of_o the_o spinal_a marrow_n p_o p_o the_o accessary_a nerve_n q_o q_o the_o ten_o pair_n of_o nerve_n the_o table_n a_o artery_n carotid_n and_o the_o manner_n of_o its_o entrance_n into_o and_o distribution_n through_o the_o brain_n page_n 32_o 33._o where_o it_o part_n with_o its_o borrow_a coat_n p._n 33_o artery_n vertebral_n and_o its_o manner_n of_o entrance_n and_o distribution_n p._n 35_o artery_n cervical_a ibid._n why_o not_o conical_a p._n 38_o the_o communicant_a branch_n of_o artery_n p._n 36_o their_o use_n and_o benefit_n ibid._n &_o 37_o a_o small_a branch_n of_o artery_n not_o before_o observe_v p._n 38_o why_o the_o artery_n of_o the_o brain_n enter_v not_o the_o cranium_fw-la with_o the_o vein_n p._n 27_o artery_n spinal_a how_o the_o blood_n be_v force_v into_o it_o p._n 37_o animal_n spirit_n how_o more_o plentiful_o produce_v p._n 54_o anatomy_n comparative_a its_o use_n p._n 54_o artery_n why_o their_o ramification_n be_v over-proportionable_a to_o
the_o trunk_n in_o the_o brain_n p._n 55_o the_o use_n of_o the_o narrowness_n of_o the_o communicant_a branch_n p._n 56_o how_o the_o carotid_n artery_n in_o brute_n come_v to_o be_v small_a above_o the_o dura_n mater_n than_o under_o it_o p._n 65_o animal_n fluid_a what_o p._n 91_o 108_o &_o 155_o how_o it_o pass_v out_o of_o the_o carnous_a fibres_fw-fr p._n 109_o its_o effect_n in_o glandulous_a and_o other_o part_n not_o serviceable_a to_o muscular_a motion_n ibid._n it_o be_v production_n p._n 115_o anus_fw-la p._n 124_o aquae_fw-la emissarium_fw-la of_o vieussenius_fw-la p._n 132_o b_o brain_n its_o vessel_n in_o general_a p._n 20_o their_o kind_n ibid._n blood_n vessel_n their_o different_a distribution_n in_o relation_n to_o the_o brain_n itself_o and_o its_o integument_n ibid._n &_o 26_o the_o reason_n of_o this_o different_a distribution_n p._n 27_o blood-vessel_n belong_v to_o the_o brain_n itself_o only_o p._n 32_o what_o proportion_n the_o blood-vessel_n of_o the_o brain_n bear_v to_o the_o rest_n of_o those_o of_o the_o whole_a body_n p._n 32_o &_o 38_o the_o remarkable_a propagation_n of_o its_o artery_n p._n 35_o blood-vessel_n belong_v to_o the_o nerve_n p._n 33_o 34_o blood_n in_o the_o sinus_n have_v two_o contrary_a torrent_n p._n 53_o the_o effect_n thereof_o ibid._n how_o the_o circulation_n of_o the_o blood_n come_v to_o be_v retard_v in_o the_o brain_n p._n 53_o the_o bony_a cell_n where_o the_o sinus_n go_v out_o into_o the_o internal_a jugular_a p._n 53_o the_o effect_n of_o its_o structure_n ibid._n &_o 54_o the_o brain_n how_o distinguish_v p._n 87_o 113_o be_v two_o substance_n ibid._n their_o structure_n p._n 89_o 90_o why_o of_o a_o different_a colour_n p._n 90_o &_o 92_o blood_n why_o red_a p._n 91_o how_o the_o brain_n be_v suspend_v p._n 7_o 8._o its_o lobe_n and_o particular_a description_n p._n 113_o 114_o be_v hinder_a lobe_n stretch_v backward_o beyond_o the_o cerebellum_fw-la ibid._n original_a of_o its_o medullary_a part_n p._n 115_o bombyces_fw-la vide_fw-la hippocampi_fw-la blood-vessel_n of_o the_o nerve_n p._n 144_o watery_a bladder_n instead_o of_o brain_n p._n 178_o 179_o brain_n petrify_v p._n 179_o propriety_n of_o the_o brain_n to_o nerve_n often_o think_v under_o the_o power_n of_o the_o cerebellum_fw-la p._n 198_o c_o consent_n of_o part_n p._n 19_o carotid_n artery_n vid._n artery_n the_o circular_a sinus_n p._n 43_o communicant_a branch_n between_o the_o carotid_n and_o cervical_a artery_n their_o use_n p._n 55_o 56._o the_o cortical_a or_o cineritious_a part_n of_o the_o brain_n p._n 88_o it_o be_v medullary_a part_n ibid._n corpus_fw-la callosum_fw-la p._n 115_o it_o be_v striae_fw-la p._n 116_o centrum_fw-la ovale_n of_o vieussenius_fw-la p._n 117_o crura_fw-la fornicis_fw-la p._n 818_o commissura_fw-la crassioris_fw-la nervi_fw-la aemula_fw-la of_o willis_n and_o vieussenius_fw-la p._n 126_o corpus_fw-la callosum_fw-la p._n 115_o centrum_fw-la ovale_n p._n 117_o crura_fw-la fornicis_fw-la p._n 118_o corpora_fw-la striata_fw-la p._n 120_o the_o cerebellum_fw-la p._n 133_o its_o dâ—fference_n from_o the_o brain_n p._n 135_o corpora_fw-la duo_fw-la alba_fw-la pone_fw-la infundibulum_fw-la p._n 140_o olivaria_n ibid._n power_n of_o the_o cerebellum_fw-la p._n 170_o 173_o d_o the_n dura_n mater_n p._n 1_o its_o manner_n of_o adhesion_n to_o the_o cranium_fw-la p._n 2_o be_v double_a ibid._n what_o sort_n of_o fibres_n and_o their_o distribution_n p._n 3_o their_o use_n p._n 4_o 5_o 6_o how_o affect_v in_o some_o distemper_n particular_o in_o vapour_n p._n 6_o its_o nerve_n ibid._n its_o process_n p._n 7_o 9_o their_a use_v p._n 7_o 8_o 9_o its_o blood_n vessel_n apart_o from_o the_o brain_n their_o number_n and_o distribution_n p._n 20_o 22_o two_o sort_n of_o dropsy_n of_o the_o brain_n observe_v by_o tulpius_n and_o wepter_n p._n 59_o their_o solution_n ibid._n &_o 60_o e_z elasticity_n of_o the_o blood_n p._n 53_o the_o effect_n of_o that_o be_v weaken_v ibid._n extravasation_n of_o the_o nutritious_a fluid_n its_o effect_n p._n 97_o elasticity_n not_o competent_a to_o the_o first_o principle_n of_o body_n p._n 100_o the_o occasion_n of_o it_o in_o other_o body_n ibid._n elasticity_n it_o be_v aequilibrium_fw-la in_o the_o whole_a compapage_n of_o muscle_n p._n 105_o the_o effect_n thereof_o ibid._n &_o 106_o experiment_n by_o injection_n of_o what_o use_n in_o muscular_a motion_n p._n 110_o f_o the_o falx_n and_o its_o particular_a use_n p._n 7_o 8_o 9_o be_v want_v in_o several_a creature_n and_o why_o p._n 9_o fibre_n of_o the_o dura_n mater_n do_v the_o office_n of_o valve_n p._n 5_o fleshy_a part_n of_o the_o body_n what_o p._n 94_o fluid_n of_o the_o body_n their_o different_a motion_n p._n 96_o fornix_n p._n 117_o it_o be_v crura_fw-la p._n 118_o the_o fornix_n of_o vieussenius_fw-la p._n 115_o the_o fornix_n common_o so_o call_v p._n 117_o it_o be_v fimbria_n according_a to_o vieussenius_fw-la p._n 118_o it_o be_v crura_fw-la ibid._n how_o natural_a and_o vital_a function_n relate_v to_o the_o cerebellum_fw-la and_o with_o what_o difference_n p._n 170_o 171_o how_o they_o come_v to_o be_v not_o under_o the_o power_n of_o the_o rational_a soul_n p._n 174_o how_o perform_v when_o the_o brain_n be_v utter_o incapable_a of_o act_v p._n 177_o g_o the_n glandula_n pituitaria_fw-la enclose_v in_o strong_a membrane_n p._n 46_o no_o serum_n can_v get_v through_o its_o integument_n ibid._n &_o 75_o gland_n of_o the_o plexus_fw-la choroeides_n p._n 63_o 63_o the_o glandula_n pituitaria_fw-la not_o capable_a of_o carry_v a_o excrementitious_a humour_n p._n 69_o 73_o the_o gland_n pit_n its_o situation_n p._n 71_o be_v not_o suspend_v in_o man_n as_o in_o brute_n ibid._n &_o 73_o in_o substance_n it_o differ_v from_o all_o other_o gland_n ib._n be_v of_o two_o sort_n and_o why_o p._n 81_o in_o what_o manner_n the_o lympha_fw-la get_v into_o it_o ibid._n the_o glandula_n pinealis_fw-la its_o situation_n and_o connexion_n p._n 83_o be_v of_o the_o conglobate_a kind_n p._n 84_o error_n of_o des_n chartes_n lower_v and_o other_o about_o it_o p._n 84_o 85_o geminum_fw-la centrum_fw-la semicirculare_a of_o vieussenius_fw-la p._n 122_o h_n headache_n how_o happen_v in_o fever_n p._n 29_o from_o the_o closeness_n of_o the_o pore_n in_o the_o cranium_fw-la p._n 42_o two_o sort_n of_o hydrocephalus_n p._n 59_o hippocampi_fw-la arantii_n p._n 118_o their_a striae_fw-la ibid._n i_o injection_n with_o mercury_n make_v blood-vessel_n appear_v p._n 34_o the_o infundibulum_fw-la p._n 77_o the_o difference_n between_o it_o in_o man_n and_o brute_n ibid._n it_o be_v two_o duct_n in_o brute_n p._n 78_o its_o office_n p._n 79_o 80_o infundibulum_fw-la the_o passage_n into_o it_o by_o three_o foramina_n p._n 124_o isthmus_n p._n 125_o instinct_n what_o p._n 162_o 163_o the_o differ_a effect_n of_o some_o impression_n upon_o the_o soul_n p._n 181_o 182_o 183_o transmission_n of_o impression_n according_a to_o doctor_n willis_n improbable_a p._n 184_o 185_o difference_n between_o involuntary_a and_o inadvertent_n act_n p._n 187_o internal_a sense_n their_o seat_n p._n 190_o l_o lsgament_n of_o the_o sinus_n p_o 51_o their_a use_v p_o 52_o 56_o lateral_a sinus_n p._n 40_o longitudinal_n sinus_n p._n 41_o lymphduct_n of_o the_o brain_n p._n 61_o 62_o lympha_fw-la how_o generate_v within_o the_o ventricles_n p._n 81_o 82_o to_o what_o end_n ibid._n laughter_n how_o make_v p._n 181_o why_o peculiar_a to_o man_n p._n 182_o libidinous_a action_n how_o cause_v p._n 181_o 182_o m_n membrane_n of_o the_o brain_n vid._n dura_n and_o pia_n mater_n muscular_a motion_n p._n 99_o divers_a opinion_n about_o it_o ibid._n muscle_n its_o inflation_n or_o contraction_n p._n 102_o 106_o muscle_n how_o contract_v or_o swell_v by_o force_n p._n 104_o muscle_n the_o effect_n of_o their_o be_v cut_v through_o p._n 105_o muscle_n their_o hardness_n and_o swell_a in_o contraction_n whence_o cause_v p._n 106_o 107_o muscular_a motion_n some_o particular_a phoenomena_fw-la about_o it_o solve_v p._n 110_o 111_o muscular_a motion_n make_v by_o the_o nervous_a fluid_n alone_o without_o concurrence_n of_o the_o blood_n p._n 177_o a_o medullary_n tract_n not_o before_o observe_v p._n 123_o medulla_n oblongata_fw-la p._n 139_o it_o be_v crura_fw-la ibid._n animal_n motion_n p._n 158_o motion_n voluntary_a and_o involuntary_a p._n 159_o 160_o two_o sort_n of_o motion_n in_o brute_n p._n 161_o medullary_a tract_n of_o the_o brain_n p._n 192_o n_n noise_n in_o the_o head_n how_o occasion_v p._n 29_o nervous_a juice_n p._n 88_o 93_o nutrition_n p._n 88_o 89_o 94_o nervous_a juice_n how_o generate_v ibid._n nerve_n its_o structure_n p._n 93_o the_o effect_n of_o its_o be_v taper_n ibid._n &_o 102_o nates_n p._n 125_o nerve_n olfactory_a p._n 143_o optic_a p._n 144_o motorium_n or_o three_o pair_n p._n 145_o patheticum_fw-la or_o four_o pair_n p._n 146_o the_o five_o pair_n p._n 147_o the_o