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of_o it_o or_o at_o least_o undergo_v a_o considerable_a weakness_n of_o their_o intellectual_a faculty_n not_o to_o be_v correct_v but_o by_o a_o long_a and_o constant_a regularity_n if_o it_o be_v at_o all_o and_o the_o like_a be_v observable_a concern_v those_o who_o have_v be_v seize_v by_o vertiginous_a and_o hypochondriacal_a distemper_n which_o i_o take_v to_o be_v proper_o nerval_a and_o to_o spring_v from_o the_o brain_n or_o its_o liquor_n disaffect_v from_o which_o few_o happen_v to_o be_v perfect_o free_v their_o imagination_n indeed_o be_v disturb_v dispose_v they_o to_o be_v too_o immorigerous_a so_o that_o i_o conceive_v it_o may_v be_v infer_v that_o if_o the_o ambient_fw-la air_n come_v to_o have_v a_o great_a degree_n of_o coldness_n especial_o if_o it_o continue_v long_o both_o the_o forementioned_a disposition_n of_o the_o blood_n to_o supply_v matter_n for_o apoplexy_n must_v be_v
but_o from_o which_o of_o they_o it_o be_v requisite_a we_o inquire_v to_o consider_v first_o the_o passive_a quality_n of_o the_o air_n dryness_n and_o moisture_n it_o may_v perhaps_o seem_v probable_a that_o they_o may_v in_o order_n to_o produce_v this_o as_o well_o as_o some_o other_o distemper_n indispose_v the_o brain_n the_o former_a by_o harden_v the_o tone_n of_o the_o sanguiferous_a vessel_n in_o general_a and_o consequent_o contract_v their_o tube_n and_o so_o cause_v a_o acceleration_n of_o the_o motion_n of_o the_o blood_n through_o they_o which_o must_v if_o propel_v with_o the_o same_o force_n at_o its_o original_n run_v more_o swift_o through_o vessel_n when_o thus_o straighten_a than_o whilst_o have_v their_o usual_a dilatation_n whereby_o it_o may_v be_v presume_v that_o when_o cast_v forth_o of_o the_o artery_n into_o the_o interstice_n between_o they_o and_o the_o vein_n at_o their_o extremity_n it_o may_v make_v its_o way_n into_o the_o more_o yield_a substance_n it_o be_v any_o where_o to_o pass_v through_o and_o the_o brain_n be_v confess_o more_o so_o than_o any_o other_o part_n of_o the_o body_n be_v therefore_o most_o likely_a to_o be_v affect_v on_o such_o occasion_n the_o latter_a which_o be_v countenance_v by_o the_o great_a hypocrates_n sect._n 3_o aph._n 16._o by_o intenerate_v the_o brain_n so_o much_o beyond_o its_o usual_a constitution_n that_o it_o may_v thence_o become_v more_o than_o natural_o susceptible_a of_o the_o always_o brisk_o circulate_v blood_n next_o as_o to_o the_o most_o efficacious_a of_o the_o active_a one_o heat_v it_o may_v perhaps_o be_v urge_v that_o the_o blood_n though_o otherwise_o well_o enough_o constitute_v be_v much_o heat_v and_o rarify_v by_o that_o excess_n of_o the_o ambient_fw-la may_v be_v incline_v to_o make_v its_o way_n out_o of_o the_o vessel_n in_o the_o brain_n especial_o on_o the_o account_n of_o its_o forementioned_a tenderness_n but_o beside_o that_o experience_n warrant_v none_o of_o these_o supposition_n perhaps_o it_o can_v hardly_o be_v make_v out_o 1_o st_z that_o so_o great_a a_o dryness_n as_o must_v effect_v this_o can_v be_v introduce_v into_o our_o body_n which_o be_v continual_o irrigate_v not_o only_o by_o the_o circulate_v blood_n but_o other_o secondary_a liquor_n 2_o dly_a that_o a_o great_a excess_n of_o moisture_n in_o the_o air_n shall_v produce_v apoplexy_n unless_o those_o more_o rare_a one_o as_o i_o suppose_v they_o be_v from_o the_o serum_fw-la and_o that_o general_o after_o other_o distemper_n which_o have_v weaken_v the_o crasis_n of_o the_o blood_n as_o well_o as_o the_o tone_n of_o the_o brain_n since_o such_o a_o dyscrasy_a impress_v on_o the_o blood_n seem_v to_o make_v it_o more_o torpid_a by_o clog_a the_o spirit_n in_o it_o and_o so_o less_o apt_a to_o inundation_n and_o beside_o relax_n the_o vessel_n as_o well_o as_o the_o substance_n of_o the_o brain_n and_o so_o favour_v its_o ready_a passage_n along_o they_o and_o 3_o dly_z that_o the_o excess_n of_o outward_a heat_n shall_v cause_v this_o eruption_n since_o by_o it_o the_o solid_a part_n may_v be_v as_o well_o presume_v to_o be_v invigorate_v to_o resist_v as_o the_o blood_n excite_v to_o attempt_v it_o beside_o that_o the_o transpiration_n that_o be_v occasion_v by_o this_o heat_n may_v sufficient_o compensate_a for_o the_o accelerate_a motion_n of_o the_o blood_n its_o quantity_n which_o may_v in_o that_o case_n be_v principal_o dangerous_a be_v thence_o diminish_v it_o remain_v then_o to_o attribute_v this_o frequency_n of_o apoplexy_n to_o the_o coldness_n of_o the_o air_n as_o the_o most_o adequate_a occasion_n which_o when_o it_o happen_v to_o be_v intense_o so_o may_v i_o conceive_v be_v make_v out_o to_o give_v a_o probable_a reason_n of_o it_o that_o cold_a be_v a_o great_a enemy_n to_o the_o brain_n be_v both_o the_o general_a sense_n and_o confirm_v by_o the_o authority_n of_o hypocrates_n sect._n 5._o aph._n 18._o and_o all_o physician_n since_o and_o therefore_o we_o may_v possible_o infer_v that_o the_o great_a architect_n fence_v this_o part_n with_o so_o strong_a a_o wall_n scarce_o more_o to_o protect_v it_o from_o other_o injury_n than_o this_o to_o which_o it_o will_v otherwise_o be_v expose_v but_o how_o cold_a affect_v it_o so_o injurious_o may_v require_v a_o little_a explication_n in_o order_n to_o it_o give_v i_o leave_v sir_n to_o consider_v without_o pretend_v to_o discuss_v it_o so_o minutely_o as_o man_n of_o more_o philosophical_a head_n and_o better_o accomplish_v in_o such_o speculation_n might_n the_o nature_n of_o cold_a as_o be_v requisite_a to_o be_v know_v in_o some_o measure_n to_o the_o understanding_n its_o relative_a effect_n which_o attempt_n indeed_o may_v appear_v very_o presumptuous_a after_o that_o the_o exquisite_a mr._n boyle_n have_v not_o think_v fit_a to_o determine_v in_o the_o matter_n but_o that_o you_o may_v perhaps_o find_v that_o the_o short_a deduction_n i_o make_v however_o unartificial_o be_v either_o take_v from_o or_o i_o conceive_v reducible_a to_o what_o he_o have_v deliver_v and_o so_o far_o from_o be_v positive_o assert_v that_o they_o be_v only_o submit_v to_o the_o censure_n of_o your_o and_o other_o better_a judgement_n to_o which_o purpose_n three_o or_o four_o general_a consideration_n seem_v not_o unfit_a so_o far_o as_o belong_v to_o our_o present_a disquisition_n to_o be_v take_v notice_n of_o to_o give_v a_o account_n of_o its_o manner_n of_o affect_v we_o in_o the_o first_o place_n than_o it_o may_v be_v consider_v that_o though_o neither_o cold_a nor_o heat_n nor_o any_o of_o the_o rest_n of_o the_o sensible_a quality_n have_v any_o real_a be_v but_o only_o in_o relation_n to_o our_o perception_n insomuch_o that_o be_v there_o no_o sensitive_a being_n there_n can_v be_v no_o such_o thing_n yet_o they_o must_v be_v found_v on_o something_o that_o do_v real_o exist_v as_o all_o accident_n beside_o be_v so_o that_o though_o they_o can_v 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return_v that_o though_o it_o be_v necessary_o to_o be_v infer_v there_o be_v motion_n where_o there_o be_v heat_n yet_o not_o always_o that_o there_o be_v heat_n where_o motion_n so_o that_o it_o be_v not_o motion_n simple_o but_o consider_v with_o some_o adjunct_n viz._n motion_n in_o such_o or_o such_o a_o degree_n and_o with_o relation_n to_o sensitive_a being_n that_o constitute_v heat_v and_o consequent_o that_o it_o be_v not_o to_o be_v infer_v that_o cold_a consist_v in_o absolute_a rest_n because_o contrary_a to_o heat_n but_o in_o a_o different_a degree_n of_o motion_n though_o other_o mechanical_a affection_n must_v concur_v to_o determine_v it_o which_o recede_v on_o one_o hand_n from_o a_o middle_a degree_n of_o it_o in_o our_o sensory_a as_o that_o which_o make_v heat_n do_v on_o the_o other_o which_o too_o may_v be_v evince_v from_o hence_o that_o each_o of_o they_o have_v a_o great_a latitude_n of_o degree_n must_v be_v found_v in_o what_o admit_v of_o degree_n which_o 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constitute_a particle_n neither_o can_v be_v bring_v into_o such_o a_o frame_n as_o we_o find_v they_o be_v nor_o persist_v in_o it_o but_o they_o especial_o the_o most_o subtle_a which_o be_v the_o soul_n immediate_a instrument_n in_o the_o organ_n will_v soon_o undergo_v new_a texture_n or_o be_v dissipate_v as_o on_o the_o other_o hand_n it_o must_v not_o be_v very_o languid_a since_o in_o that_o case_n they_o be_v in_o great_a number_n and_o some_o touch_v still_o in_o their_o motion_n upon_o other_o which_o have_v a_o different_a determination_n will_v soon_o be_v entangle_v in_o one_o another_o or_o otherwise_o stop_v but_o it_o must_v be_v such_o a_o middle_a one_o as_o may_v keep_v up_o a_o due_a crasis_n in_o both_o the_o fluid_a and_o consistent_a substance_n that_o make_v up_o the_o organ_n for_o the_o perform_v the_o function_n appoint_v four_o that_o these_o motion_n consider_v as_o i_o say_v in_o their_o subject_n thus_o regulate_v be_v congenial_a to_o we_o seem_v not_o 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any_o object_n from_o without_o come_v against_o and_o so_o affect_v our_o sensory_n with_o a_o great_a degree_n of_o motion_n than_o what_o natural_o belong_v to_o they_o we_o form_v one_o kind_n of_o notion_n of_o they_o when_o with_o a_o lesser_a degree_n a_o very_a different_a one_o and_o give_v they_o likewise_o denomination_n according_a to_o that_o degree_n of_o motion_n with_o which_o they_o act_n upon_o our_o sensory_a from_o the_o consideration_n of_o these_o particular_n we_o may_v i_o conceive_v deduce_v that_o the_o nature_n of_o cold_a consist_v in_o a_o check_n though_o not_o a_o total_a stop_n of_o that_o degree_n of_o motion_n which_o belong_v natural_o to_o the_o part_n of_o and_o fluid_a substance_n in_o those_o of_o our_o sensory_n which_o concern_v the_o sense_n of_o touch_v due_o constitute_v as_o on_o the_o contrary_a heat_v without_o some_o reflection_n on_o which_o cold_a can_v hardly_o be_v understand_v in_o a_o acceleration_n of_o such_o their_o motion_n which_o difference_n be_v by_o mean_n of_o these_o organ_n transmit_v to_o the_o soul_n and_o so_o affect_v she_o she_o form_v a_o comparison_n between_o they_o denominate_v one_o heat_n and_o the_o other_o cold._n but_o though_o motion_n must_v have_v the_o first_o consideration_n in_o produce_v this_o effect_n upon_o we_o yet_o it_o be_v far_a to_o be_v note_v that_o the_o bulk_n and_o figure_n both_o of_o the_o body_n that_o cause_v this_o check_n and_o those_o upon_o which_o it_o be_v impress_v must_v concur_v to_o it_o it_o be_v evident_a that_o not_o only_o some_o be_v themselves_o more_o fit_a and_o easy_a to_o be_v move_v than_o other_o according_a as_o they_o be_v big_a or_o less_o of_o this_o or_o that_o figure_n but_o also_o to_o accelerate_v or_o retard_v the_o motion_n of_o other_o that_o impinge_a against_o they_o as_o to_o acceleration_n wherein_o heat_n consist_v minute_n body_n of_o almost_o any_o figure_n that_o be_v irregular_a if_o they_o be_v not_o apt_a to_o cohere_v may_v occasion_v that_o though_o some_o more_o than_o other_o especial_o those_o that_o be_v most_o angular_a since_o with_o their_o angle_n strike_v against_o those_o among_o which_o they_o move_v they_o must_v be_v presume_v to_o exert_v a_o proportional_o great_a force_n than_o blunt_a or_o glabrous_a one_o can_v which_o on_o that_o score_n be_v easy_a to_o be_v distort_v but_o as_o to_o retardation_n which_o make_v the_o nature_n of_o cold_a that_o we_o may_v restrain_v our_o discourse_n to_o that_o it_o may_v be_v occasion_v on_o several_a account_n for_o first_o either_o the_o affect_a body_n may_v by_o a_o correspondency_n of_o their_o side_n so_o apply_v themselves_o to_o those_o to_o which_o they_o come_v that_o transfer_v their_o surplusage_n of_o motion_n to_o they_o they_o may_v adhere_v to_o they_o and_o with_o they_o constitute_v big_a mass_n and_o acquire_v other_o figure_n than_o before_o they_o have_v or_o second_o by_o alter_v the_o due_a contexture_n of_o the_o vessel_n which_o be_v necessary_a to_o regular_a motion_n they_o may_v thence_o occasion_v a_o stop_n of_o the_o substance_n which_o use_v to_o be_v carry_v in_o they_o and_o so_o though_o they_o be_v otherwise_o dispose_v to_o accelerate_v motion_n on_o the_o account_n of_o their_o figure_n as_o i_o say_v before_o yet_o thus_o accidental_o they_o come_v to_o retard_v it_o or_o three_o if_o they_o happen_v to_o be_v of_o such_o a_o figure_n and_o texture_n as_o to_o be_v flexible_a and_o thereby_o to_o wrap_v themselves_o about_o those_o they_o occur_v to_o they_o may_v by_o thus_o inviscate_v they_o hinder_v their_o motion_n or_o four_o and_o which_o may_v possible_o in_o the_o present_a case_n be_v the_o most_o effectual_a mean_n of_o occasion_v this_o check_n they_o may_v so_o interpose_v themselves_o between_o the_o move_v particle_n in_o the_o organ_n as_o to_o intercept_v their_o former_a motion_n whereby_o also_o they_o fill_v the_o space_n necessary_a for_o continue_v those_o motion_n this_o seem_v most_o agreeable_o to_o be_v do_v by_o conical_a one_o which_o by_o their_o angle_n be_v fit_v to_o enter_v but_o be_v blunt_a and_o big_a at_o the_o other_o extremity_n must_v when_o they_o come_v into_o porosity_n which_o be_v a_o little_a strait_o than_o that_o necessary_o fix_v there_o and_o both_o the_o more_o abate_v the_o motion_n of_o the_o forementioned_a agitate_a matter_n and_o also_o be_v more_o firm_o impact_v in_o the_o part_n unto_o which_o they_o thus_o arrive_v by_o their_o contraction_n upon_o the_o score_n of_o the_o lancination_n occasion_v by_o the_o sharp_a angle_n of_o these_o particle_n first_o enter_v the_o solid_a part_n that_o be_v sensile_a be_v all_o the_o body_n over_o contractile_a as_o be_v i_o suppose_v nothing_o else_o but_o either_o propagation_n of_o nerve_n or_o the_o root_n of_o they_o and_o when_o it_o happen_v that_o many_o such_o conical_a substance_n come_v to_o act_v at_o once_o upon_o the_o organ_n the_o 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of_o those_o that_o immoderate_o use_v it_o and_o more_o perhaps_o then_o the_o apoplectic_a balsam_n because_o both_o the_o matter_n of_o it_o be_v more_o gross_a and_o thence_o apt_a to_o lie_v long_o about_o the_o extremity_n of_o the_o olfactory_a nerve_n and_o so_o continual_o to_o affect_v they_o and_o also_o the_o custom_n of_o many_o be_v as_o i_o have_v often_o observe_v ever_o and_o anon_o to_o be_v supply_v more_o whereby_o the_o pore_n of_o those_o nerve_n be_v keep_v continual_o open_a and_o i_o must_v suspect_v that_o shall_v any_o pestilential_a season_n invade_v which_o god_n avert_v such_o person_n as_o much_o accustom_v themselves_o to_o these_o powder_n will_v caeteris_fw-la paribus_fw-la be_v in_o more_o danger_n of_o receive_v infection_n than_o other_o since_o from_o the_o symptom_n deliver_v by_o author_n the_o pestilence_n appear_v to_o seize_v the_o brain_n particular_o and_o the_o sudden_a fate_n record_v of_o those_o that_o without_o any_o precede_a 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in_o our_o body_n it_o will_v not_o satisfy_v the_o indication_n and_o by_o such_o a_o evacuation_n viz._n to_o at_o least_o sixty_o ounce_n at_o once_o d._n gibbons_n of_o oxon_n a_o person_n who_o you_o as_o well_o as_o i_o know_v to_o be_v beside_o his_o great_a part_n and_o general_a learning_n of_o that_o sagacity_n and_o judgement_n in_o physic_n that_o his_o example_n must_v much_o justify_v the_o practice_n cure_v a_o apoplexy_n there_o some_o time_n since_o think_v deplorable_a as_o if_o you_o question_v the_o relation_n from_o i_o you_o may_v be_v satisfy_v both_o from_o himself_o and_o his_o chirurgeon_n and_o also_o several_a other_o that_o be_v present_a and_o be_v it_o proper_a for_o i_o i_o can_v allege_v analogous_a instance_n of_o such_o profuse_a if_o you_o will_v call_v they_o so_o evacuation_n of_o that_o kind_n in_o my_o own_o observation_n attempt_v with_o great_a advantage_n to_o my_o patient_n and_o if_o the_o first_o bleed_v secure_v not_o the_o patient_n it_o 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