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coldness_n be_v natural_a to_o water_n since_o this_o liquor_n perpetual_o vary_v its_o temperature_n as_o to_o cold_a and_o heat_n according_a to_o the_o temper_n of_o the_o contiguous_a or_o the_o neighbour_a body_n especial_o the_o ambient_fw-la air._n and_o therefore_o the_o water_n of_o a_o unshaded_a pond_n for_o instance_n though_o it_o rest_v in_o its_o proper_a and_o natural_a place_n as_o they_o speak_v yet_o in_o autumn_n if_o the_o wether_n be_v fair_a the_o temperature_n of_o it_o will_v much_o vary_v in_o the_o compass_n of_o the_o same_o day_n and_o the_o liquor_n will_v be_v much_o hot_a at_o noon_n than_o early_o in_o the_o morning_n or_o at_o midnight_n though_o this_o great_a diversity_n be_v the_o effect_n only_o of_o a_o natural_a agent_n the_o sun_n act_v according_a to_o its_o regular_a course_n and_o in_o the_o depth_n of_o winter_n it_o be_v general_o confess_v that_o water_n be_v much_o cold_a than_o in_o the_o heat_n of_o summer_n which_o seem_v to_o be_v 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ambient_fw-la air_n yet_o that_o may_v often_o happen_v upon_o another_o account_n namely_o that_o the_o water_n be_v many_o hundred_o time_n a_o more_o dense_n fluid_n than_o the_o air_n and_o consist_v of_o particle_n more_o apt_a to_o insinuate_v themselves_o into_o the_o pore_n of_o the_o skin_n a_o great_a part_n of_o the_o agitation_n of_o the_o blood_n and_o spirit_n contain_v in_o the_o hand_n be_v communicate_v to_o the_o water_n and_o thereby_o lose_v by_o the_o fluid_v that_o part_n with_o it_o and_o the_o minute_n particle_n of_o the_o water_n which_o be_v perhaps_o more_o supple_a and_o flexible_a insinuate_a themselves_o into_o the_o pore_n of_o the_o skin_n which_o the_o aerial_a particle_n by_o reason_n of_o their_o stifness_n and_o perhaps_o length_n can_v do_v they_o come_v to_o affect_v the_o somewhat_o more_o internal_a part_n of_o the_o hand_n which_o be_v much_o hot_a than_o the_o cuticula_fw-la or_o scarf-skin_n make_v we_o feel_v they_o very_o cold_a as_o when_o a_o sweat_v hand_n be_v plunge_v into_o lukewarm_a water_n the_o liquor_n will_v be_v judge_v cold_a by_o he_o who_o if_o his_o other_o hand_n be_v very_o cold_a will_v with_o it_o feel_v the_o same_o water_n hot._n to_o confirm_v which_o conjecture_n i_o shall_v add_v that_o have_v sometime_o purposely_o take_v a_o seal_v weatherglass_n who_o include_v liquor_n be_v bring_v to_o the_o temperature_n of_o the_o ambient_fw-la air_n and_o thrust_v the_o ball_n of_o it_o under_o water_n keep_v in_o the_o same_o air_n there_o will_v be_v discover_v no_o such_o coldness_n in_o the_o water_n as_o one_o will_v have_v expect_v the_o former_a reason_n of_o the_o sensible_a cold_a the_o hand_n feel_v when_o thrust_v into_o that_o liquor_n have_v here_o no_o place_n to_o which_o i_o shall_v add_v that_o have_v for_o tryal_n sake_n make_v water_n very_o cold_a by_o dissolve_v sal-armoniac_a in_o it_o in_o summer_n time_n it_o will_v after_o a_o while_n return_v to_o its_o usual_a degree_n of_o warmth_n and_o have_v make_v the_o same_o experiment_n in_o winter_n it_o will_v return_v to_o such_o a_o coldness_n as_o belong_v to_o it_o in_o that_o season_n so_o that_o it_o do_v not_o return_v to_o any_o determinate_a degree_n of_o coldness_n as_o natural_a to_o it_o but_o to_o that_o great_a or_o lesser_a that_o have_v be_v accidental_o give_v it_o by_o the_o ambient_fw-la air_n before_o the_o sal-armoniac_a have_v refrigerated_a it._n as_o to_o the_o motion_n of_o restitution_n observable_a upon_o the_o removal_n or_o cease_v of_o the_o force_n in_o air_n violent_o compress_v and_o in_o the_o blade_n of_o a_o sword_n forcible_o bend_v i_o confess_v it_o seem_v to_o i_o a_o very_a difficult_a thing_n to_o assign_v the_o true_a mechanical_a cause_n of_o it._n but_o yet_o i_o think_v it_o far_o more_o likely_a that_o the_o cause_n shall_v be_v mechanical_a than_o that_o the_o effect_n proceed_v from_o such_o a_o watchfulness_n of_o nature_n as_o be_v pretend_v for_o first_o i_o question_v whether_o we_o have_v any_o air_n here_o below_o that_o be_v in_o other_o than_o a_o preternatural_a or_o violent_a state_n the_o low_a part_n of_o our_o atmospherical_a air_n be_v constant_o compress_v by_o the_o weight_n of_o the_o upper_a part_n of_o the_o same_o air_n that_o lean_a upon_o they_o as_o for_o the_o restitution_n of_o the_o bend_a blade_n of_o a_o sword_n and_o such_o like_a springy_a body_n when_o the_o force_n that_o bend_v they_o be_v remove_v my_o thought_n about_o the_o theory_n of_o springyne_n belong_v to_o another_o paper_n and_o therefore_o i_o shall_v here_o only_o by_o way_n of_o argument_n ad_fw-la hominem_fw-la consider_v in_o answer_n to_o the_o objection_n that_o if_o for_o example_n you_o take_v a_o somewhat_o long_a and_o narrow_a plate_n of_o silver_n that_o have_v not_o be_v hammer_v or_o compress_v or_o which_o be_v sure_a have_v be_v make_v red-hot_a in_o the_o fire_n and_o suffer_v to_o cool_v leisurely_o you_o may_v bend_v it_o which_o way_n you_o will_v and_o it_o will_v constant_o retain_v the_o last_o curve_v figure_n that_o you_o give_v it._n but_o if_o have_v again_o straighten_v this_o plate_n you_o give_v it_o some_o smart_a stroke_n of_o a_o hammer_n it_o will_v by_o that_o mere_o mechanical_a change_n become_v a_o springy_a body_n so_o that_o if_o with_o your_o hand_n you_o force_v it_o a_o little_a from_o its_o rectitude_n as_o soon_o as_o you_o remove_v your_o hand_n it_o will_v endeavour_v to_o regain_v its_o former_a straightness_n the_o like_a may_v be_v observe_v in_o copper_n but_o nothing_o near_o so_o much_o or_o scarce_o at_o all_o in_o lead_n now_o upon_o these_o phaenomena_n i_o demand_v why_o if_o nature_n be_v so_o careful_a to_o restore_v body_n to_o their_o former_a state_n she_o do_v not_o restore_v the_o silver_n blade_n or_o plate_n to_o its_o rectitude_n when_o it_o be_v bend_v this_o way_n or_o that_o way_n before_o it_o be_v hammer_v and_o why_o a_o few_o stroke_n of_o a_o hammer_n 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to_o give_v a_o account_n of_o physical_a subject_n and_o even_o of_o the_o generation_n corruption_n and_o form_n of_o natural_a body_n this_o advertisement_n premise_v i_o pursue_v this_o discourse_n it_o interrupt_v by_o add_v thus_o in_o a_o human_a body_n the_o cause_n that_o disorder_n it_o be_v oftentimes_o but_o transient_a whereas_o the_o structure_n of_o the_o body_n itself_o and_o the_o cause_n that_o conduce_v to_o the_o preservation_n of_o that_o structure_n be_v more_o stable_a and_o durable_a and_o on_o that_o account_n may_v enable_v the_o engine_n to_o outlast_v many_o thing_n that_o be_v hostile_a to_o it._n this_o may_v be_v somewhat_o illustrate_v by_o consider_v that_o sleep_v though_o it_o be_v not_o proper_o a_o disease_n easy_o become_v one_o when_o it_o frequent_o transgress_v its_o due_a bound_n and_o even_o whilst_o it_o keep_v within_o they_o it_o do_v for_o the_o time_n it_o last_v hinder_v the_o exercise_n of_o many_o function_n of_o the_o body_n more_o 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attempt_n so_o in_o other_o case_n he_o may_v do_v it_o in_o a_o positive_a way_n by_o employ_v medicine_n that_o either_o strengthen_v the_o part_n as_o well_o fluid_a as_o stable_a or_o make_v sensible_a evacuation_n of_o matter_n necessary_a to_o be_v proscribe_v by_o they_o or_o he_o may_v do_v it_o by_o use_v remedy_n that_o by_o their_o manifest_a quality_n oppugn_v those_o of_o the_o morbific_a matter_n or_o cause_n as_o when_o by_o alcaly_n or_o absorbing_a medicament_n he_o mortify'_v preternatural_a acid_n or_o disable_v they_o to_o do_v mischief_n and_o perhaps_o one_o may_v venture_v to_o say_v that_o in_o some_o case_n the_o physician_n may_v in_o a_o positive_a way_n contribute_v more_o to_o the_o cure_n even_o of_o a_o inward_a disease_n than_o nature_n herself_o seem_v able_a to_o do_v for_o if_o there_o be_v any_o such_o medicine_n preparable_a by_o art_n as_o helmont_n affirm_v may_v be_v make_v of_o paracelsus_n ludus_fw-la by_o the_o liquor_n alkahest_n or_o as_o 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of_o the_o kidney_n and_o bladder_n that_o out_o of_o vegetable_a or_o animal_n substance_n of_o a_o slight_a texture_n such_o as_o be_v the_o alimental_a juice_n which_o in_o suck_v child_n who_o be_v observe_v to_o be_v frequent_o subject_a to_o the_o stone_n in_o the_o bladder_n be_v afford_v by_o so_o mild_a a_o liquor_n as_o milk_n nature_n skilful_o frame_v a_o hard_a body_n of_o so_o firm_a a_o texture_n that_o it_o puzzle_v physician_n and_o chemist_n to_o tell_v how_o such_o a_o coagulation_n can_v be_v make_v of_o such_o substance_n and_o i_o have_v find_v more_o than_o one_o calculus_fw-la to_o resist_v both_o spirit_n of_o salt_n that_o ready_o dissolve_v iron_n and_o steel_n and_o that_o high_o corrosive_a menstruum_fw-la oil_n of_o vitriol_n itself_o we_o see_v also_o that_o divers_a time_n the_o seed_n or_o seminal_a principle_n of_o worm_n that_o lie_v conceal_v in_o unwholesome_a fruit_n and_o other_o ill-qualified_a aliment_n be_v preserve_v and_o cherish_v in_o the_o body_n so_o as_o in_o spite_n of_o the_o menstruum_n ferment_n etc._n etc._n they_o meet_v with_o there_o they_o grow_v to_o be_v perfect_a worm_n of_o their_o respective_a kind_n that_o be_v often_o very_o troublesome_a and_o sometime_o very_o dangerous_a to_o the_o body_n that_o harbour_v they_o produce_v though_o perhaps_o not_o immediate_o both_o more_o and_o more_o various_a distemper_n especial_o here_o in_o england_n than_o every_o physician_n be_v aware_a of_o this_o reflection_n may_v very_o well_o be_v apply_v to_o those_o instance_n we_o meet_v with_o in_o good_a seq_n author_n of_o frog_n and_o even_a toad_n who_o spawn_n be_v take_v in_o with_o corrupt_a water_n have_v be_v cherish_v in_o the_o stomach_n till_o the_o egg_n be_v grow_v to_o be_v complete_a animal_n they_o produce_v horrid_a symptom_n in_o the_o body_n that_o have_v lodge_v and_o feed_v they_o and_o if_o according_a to_o the_o receive_a opinion_n of_o physician_n stubborn_a quartan_o be_v produce_v by_o a_o melancholy_a humour_n seat_v in_o the_o spleen_n it_o may_v be_v say_v that_o nature_n seem_v to_o busy_v herself_o to_o convert_v some_o part_n of_o the_o fluid_a chile_n into_o so_o tenacious_a and_o hardly_o dissipable_a a_o juice_n that_o in_o many_o patient_n notwithstanding_o the_o neighbourhood_n of_o the_o spleen_n and_o stomach_n neither_o strong_a emetic_n nor_o purge_v nor_o other_o usual_a remedy_n be_v able_a in_o a_o long_a time_n to_o dislodg_v it_o or_o resolve_v it_o or_o correct_v it_o but_o that_o be_v yet_o more_o conducive_a to_o my_o present_a purpose_n that_o be_v afford_v i_o by_o the_o consideration_n of_o the_o poison_n of_o a_o mad-dog_n which_o nature_n sometime_o seem_v industrious_o and_o solicitous_o to_o preserve_v since_o we_o have_v instance_n in_o approve_a author_n that_o a_o little_a foam_n convey_v into_o the_o blood_n by_o a_o slight_a hurt_n perhaps_o quick_o heal_v up_o be_v notwithstanding_o the_o constant_a heat_n and_o perspirable_a frame_n 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perpend_v how_o great_a a_o difference_n there_o may_v be_v between_o a_o body_n consider_v absolute_o or_o by_o itself_o and_o the_o same_o body_n consider_v in_o such_o circumstance_n as_o it_o may_v be_v find_v in_o for_o in_o some_o case_n a_o physical_a body_n many_o have_v strange_a thing_n just_o ascribe_v to_o it_o though_o not_o as_o it_o be_v such_o a_o body_n consider_v simple_o or_o unassociate_v with_o other_o body_n but_o as_o it_o be_v place_v among_o congruous_a one_o and_o make_v the_o principal_a or_o most_o operative_a part_n of_o a_o compound_a body_n or_o of_o the_o complex_fw-la of_o body_n it_o be_v join_v with_o and_o which_o be_v of_o such_o determinate_a structure_n as_o be_v convenient_a for_o the_o phaenomena_n to_o be_v exhibit_v this_o may_v be_v analogical_o see_v in_o what_o happen_v to_o a_o spring_n for_o if_o be_v bend_v it_o be_v hold_v in_o one_o hand_n or_o crowd_v into_o a_o box_n it_o be_v but_o a_o simple_a thing_n that_o do_v only_o by_o its_o expansive_a endeavour_n strive_v to_o remove_v the_o body_n that_o keep_v it_o compress_v but_o in_o a_o curious_a watch_n it_o may_v by_o virtue_n of_o the_o structure_n of_o that_o engine_n become_v the_o principle_n of_o i_o know_v not_o how_o many_o differ_v and_o perhaps_o contrary_a motion_n among_o the_o part_n of_o it_o and_o of_o many_o notable_a phaenomena_n and_o effect_n exhibit_v or_o produce_v thereby_o this_o reflection_n may_v perhaps_o be_v improve_v if_o i_o here_o add_v that_o in_o many_o body_n a_o fluid_a substance_n determine_v to_o convenient_a motion_n may_v be_v equivalent_a to_o a_o internal_a spring_n especial_o if_o it_o be_v assist_v by_o friendly_a external_n agent_n this_o may_v be_v illustrate_v by_o consider_v that_o if_o one_o that_o play_v skilful_o on_o a_o flute_n blow_v out_o of_o his_o mouth_n into_o the_o open_a air_n he_o will_v but_o turn_v it_o into_o a_o vapid_a aereal_a stream_n but_o if_o this_o wind_n due_o pass_v into_o the_o instrument_n 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the_o juice_n and_o spirit_n contain_v in_o they_o will_v be_v so_o agitate_a by_o the_o warmth_n of_o that_o season_n and_o so_o modify_v by_o the_o particular_a structure_n of_o the_o more_o firm_a part_n that_o though_o neither_o earth_n nor_o rain_n cooperate_v they_o will_v shoot_v forth_o green_a stalk_n or_o leave_v for_o many_o week_n together_o as_o if_o they_o be_v plant_v in_o a_o good_a soil_n though_o the_o matter_n of_o these_o green_a production_n be_v furnish_v by_o the_o radical_a part_n themselves_o as_o may_v be_v argue_v both_o from_o the_o manifest_a diminution_n of_o the_o bulb_n in_o bigness_n and_o the_o great_a and_o gradual_a decrement_n in_o weight_n that_o i_o observe_v in_o make_v experiment_n of_o this_o king_n and_o so_o also_o the_o air_n which_o be_v a_o external_n fluid_n concur_v with_o the_o juice_n and_o spirit_n of_o divers_a infect_v and_o other_o cold_a animal_n may_v both_o be_v put_v into_o motion_n and_o have_v that_o motion_n so_o determine_v by_o their_o organization_n as_o to_o recover_v in_o the_o spring_n or_o summer_n as_o it_o be_v a_o new_a life_n after_o they_o have_v lie_v moveless_a and_o like_a dead_a thing_n all_o the_o winter_n as_o we_o see_v in_o fly_n that_o in_o a_o hot_a air_n quick_o recover_v motion_n and_o sense_n after_o have_v lose_v both_o for_o perhaps_o many_o month_n and_o the_o like_a change_n may_v be_v far_o more_o sudden_o observe_v in_o they_o in_o the_o warm_a season_n of_o the_o year_n when_o the_o air_n be_v draw_v from_o they_o by_o the_o pneumatick_a pump_n and_o afterward_o permit_v to_o enliven_v they_o again_o and_o to_o give_v another_o instance_n that_o may_v possible_o please_v better_a because_o as_o it_o be_v pure_o physical_a so_o it_o be_v simple_a and_o very_o conspicuous_a though_o that_o which_o the_o sunbeam_n be_v wont_n primary_o to_o produce_v be_v but_o light_a and_o perhaps_o heat_v yet_o fall_v in_o a_o due_a manner_n upon_o a_o rorid_a cloud_n they_o form_n there_o the_o figure_n of_o a_o vast_a bow_n and_o be_v various_o reflect_v and_o refract_v adorn_v it_o with_o the_o several_a colour_n man_n admire_v in_o the_o rainbow_n but_o i_o must_v not_o far_o prosecute_v a_o observation_n that_o i_o mention_v but_o occasional_o as_o a_o instance_n whereby_o to_o show_v that_o the_o advancement_n of_o solid_a philosophy_n may_v be_v much_o hinder_v by_o man_n custom_n of_o assign_v as_o true_a cause_n of_o physical_a effect_n imaginary_a thing_n or_o perhaps_o arbitrary_a name_n among_o which_o none_o seem_v to_o have_v have_v a_o more_o malevolent_a influence_n upon_o physiology_n than_o the_o term_n nature_n none_o have_v be_v so_o frequent_o and_o confident_o use_v or_o employ_v to_o so_o many_o differ_a purpose_n and_o therefore_o though_o i_o will_v not_o total_o forbid_v the_o use_n of_o the_o word_n nature_n nor_o of_o expression_n of_o kin_n to_o it_o in_o popular_a discourse_n or_o even_o in_o some_o philosophical_a one_o where_o accurateness_n be_v not_o require_v or_o ambiguity_n be_v prevent_v by_o the_o context_n nor_o to_o dispatch_v whereit_n may_v be_v employ_v as_o a_o compendious_a form_n of_o speech_n without_o danger_n to_o truth_n or_o prejudice_n to_o sound_a philosophy_n in_o which_o case_n i_o myself_o forbear_v not_o the_o use_n of_o it_o yet_o i_o hope_v our_o free_a enquiry_n may_v somewhat_o at_o least_o conduce_v to_o the_o more_o skilful_a indagation_n and_o happy_a discovery_n of_o physical_a truth_n if_o it_o can_v persuade_v man_n to_o make_v use_v less_o frequent_o and_o with_o more_o circumspection_n of_o so_o ambiguous_a and_o so_o often_o abuse_v a_o term_n as_o nature_n and_o cease_v to_o presume_v that_o a_o man_n have_v well_o perform_v the_o part_n of_o a_o true_a physiologer_n till_o he_o have_v circumstantial_o or_o particular_o deduce_v the_o phaenomenon_n he_o consider_v by_o intelligible_a way_n from_o intelligible_a principle_n which_o he_o will_v be_v constant_o put_v in_o mind_n of_o do_v or_o discover_v that_o he_o have_v not_o do_v it_o if_o by_o forbear_v general_a and_o ambiguous_a term_n and_o word_n he_o endeavour_v to_o explain_v thing_n by_o expression_n that_o be_v clear_a to_o all_o attentive_a reader_n furnish_v with_o a_o ordinary_a measure_n of_o understanding_n and_o reason_n and_o this_o perspicuous_a way_n of_o philosophize_v shall_v be_v not_o a_o little_a recommend_v to_o ingenious_a man_n by_o the_o valuable_a discovery_n which_o those_o that_o have_v employ_v it_o in_o their_o researche_n and_o explication_n of_o difficult_a thing_n have_v in_o this_o inquisitive_a age_n happy_o make_v not_o only_o about_o the_o various_a phaenomena_n common_o refer_v to_o the_o fuga_fw-la vacui_fw-la but_o in_o the_o hydrostaticks_n optic_n anatomy_n botanic_n and_o divers_a other_o part_n of_o real_a learning_n that_o i_o can_v now_o stay_v to_o enumerate_v and_o thus_o much_o it_o may_v possible_o be_v sufficient_a to_o have_v say_v about_o the_o service_n our_o doctrine_n may_v do_v natural_a philosophy_n as_o for_o religion_n if_o what_o i_o have_v former_o say_v in_o favour_n of_o it_o be_v due_o consider_v and_o apply_v the_o past_a discourse_n will_v not_o appear_v unfriendly_a nor_o perhaps_o useless_a to_o it._n and_o therefore_o if_o i_o do_v here_o abridge_v what_o i_o have_v there_o say_v and_o add_v to_o it_o some_o consideration_n that_o be_v fit_a to_o be_v reserve_v for_o this_o place_n i_o hope_v the_o doctrine_n we_o have_v propose_v may_v appear_v fit_a to_o do_v it_o a_o threefold_a service_n i._o and_o in_o the_o first_o place_n our_o doctrine_n may_v keep_v many_o that_o be_v wont_a or_o be_v incline_v to_o have_v a_o excessive_a veneration_n for_o what_o they_o call_v nature_n from_o run_v or_o be_v seduce_v into_o those_o extravagant_a and_o sacrilegious_a error_n that_o have_v be_v upon_o plausible_a pretence_n embrace_v