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willis_n who_o be_v one_o of_o the_o great_a physician_n of_o his_o and_o precede_a age_n and_o true_o all_o that_o i_o can_v say_v for_o myself_o be_v that_o as_o it_o will_v be_v below_o the_o character_n of_o so_o great_a a_o man_n to_o write_v any_o thing_n upon_o any_o other_o consideration_n than_o a_o improvement_n of_o knowledge_n and_o truth_n so_o undoubted_o he_o will_v not_o desire_v any_o thing_n he_o write_v shall_v be_v believe_v except_o it_o seem_v so_o that_o than_o which_o i_o hope_v will_v be_v a_o apology_n for_o such_o a_o attempt_n be_v that_o i_o have_v consider_v his_o opinion_n with_o no_o other_o design_n than_o a_o endeavour_n after_o truth_n and_o have_v offer_v nothing_o against_o his_o opinion_n but_o plain_a and_o unprejudiced_a reason_n and_o though_o i_o have_v give_v reason_n enough_o to_o prove_v he_o be_v mistake_v in_o this_o point_n yet_o i_o must_v ever_o have_v the_o great_a veneration_n and_o esteem_n for_o all_o such_o man_n of_o 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you_o have_v be_v please_v to_o take_v i_o into_o your_o favour_n and_o also_o that_o you_o will_v pardon_v i_o for_o take_v this_o liberty_n since_o it_o be_v only_o design_v to_o testify_v my_o gratitude_n for_o those_o favour_n you_o have_v already_o be_v please_v to_o confer_v on_o your_o very_a humble_a and_o oblige_a servant_n r._n boulton_n the_o content_n the_o introduction_n page_z 1_o our_o knowledge_n be_v very_o short_a ibid._n and_o imperfect_a p._n 3_o the_o pursuit_n of_o knowledge_n very_o desirable_a p._n 4_o where_o most_o easy_o attain_v p._n 5_o the_o heat_n of_o the_o blood_n not_o obscure_a in_o respect_n of_o its_o cause_n p._n 6_o the_o opinion_n of_o the_o ancient_n very_o superficial_a p._n 9_o dr._n willis_n opinion_n answer_v p._n 11_o but_o one_o way_n by_o which_o body_n grow_v hot_a p._n 13_o fire_n be_v rarify_v matter_n in_o motion_n p._n 16_o heat_v not_o actual_o in_o the_o body_n that_o cause_v it_o p._n 19_o heat_v only_o a_o sensation_n p._n 20_o heat_v only_o produce_v one_o way_n prove_v further_o in_o answer_n to_o dr._n willis_n p._n 23_o a_o objection_n answer_v p._n 27_o his_o comparison_n of_o the_o blood_n be_v accension_n with_o flame_n answer_v p._n 28_o several_a degree_n of_o heat_n without_o flame_n p._n 29_o nitre_n make_v no_o part_n of_o the_o flame_n p._n 32_o how_o nitre_n promote_v flame_n p._n 33_o why_o a_o candle_n in_o a_o glass-globe_n be_v extinguish_v by_o extract_v air._n p._n 36_o whether_o nitre_n promote_v the_o heat_n of_o the_o blood_n p._n 39_o liquid_n fetter_v up_o heat_n without_o nitre_n p._n 41_o blood_n may_v grow_v hot_a without_o a_o sulphureous_a pabulum_fw-la p._n 42_o his_o comparison_n of_o the_o recrement_n of_o flame_n and_o blood_n answer_v p._n 43_o a_o digression_n why_o flame_n usual_o ascend_v p._n 50_o why_o it_o sometime_o descend_v p._n 60_o diemerbroek_n opinion_n answer_v p._n 62_o dr._n henshaw_n opinion_n answer_v p._n 65_o of_o the_o true_a reason_n of_o the_o heat_n of_o the_o blood_n p._n 67_o animal_n spirit_n demonstrate_v p._n 80_o that_o they_o be_v in_o motion_n through_o the_o nerve_n p._n 89_o the_o nature_n of_o they_o p._n 91_o the_o reason_n of_o the_o heat_n of_o the_o blood_n explain_v p._n 94_o that_o reason_n of_o its_o heat_n prove_v p._n 100_o by_o attrition_n p._n 103_o how_o the_o animal_n spirit_n rarify_v the_o blood_n p._n 111_o why_o the_o heat_n vary_v p._n 112_o how_o sp._n of_o c._n c._n raise_v the_o pulse_n p._n 116_o the_o reason_n of_o flush_a heat_n p._n 120_o how_o far_o the_o blood_n and_o spirit_n be_v active_a and_o passive_a p._n 131_o how_o the_o heat_n of_o the_o blood_n be_v continue_v p._n 132_o some_o objection_n answer_v p._n 134_o why_o its_o heat_n decline_v p._n 139_o of_o the_o use_n of_o the_o lung_n p._n 159_o in_o respect_n of_o the_o soul_n p._n 162_o why_o they_o
ought_v to_o be_v in_o motion_n p._n 164_o the_o use_n of_o the_o lung_n in_o respect_n of_o the_o body_n p._n 169_o to_o dilate_v the_o ventricles_n of_o the_o heart_n p._n 174_o how_o obstruct_v respiration_n kill_v a_o animal_n p._n 178_o whether_o air_n be_v mix_v with_o the_o mass_n of_o blood_n p._n 191_o whether_o nitre_n be_v p._n 192_o and_o how_o p._n 193_o what_o effect_n it_o have_v upon_o the_o mass_n of_o humour_n in_o the_o lung_n p._n 196_o how_o nitre_n depress_n the_o heat_n of_o the_o blood_n p._n 198_o pag._n l._n read_v 41._o 5._o occasion_n for_o accension_n 53._o 18._o motion_n for_o notion_n 60._o 2._o explode_a 84._o 8._o blood_n for_o body_n of_o the_o heatt_z of_o the_o blood_n even_o philosophy_n in_o general_n be_v so_o creation_n mysterious_a and_o so_o infinite_o out_o of_o the_o reach_n of_o our_o short_a and_o weak_a capacity_n that_o the_o best_a of_o philosopher_n may_v true_o be_v say_v to_o have_v but_o a_o slight_a and_o superficial_a knowledge_n 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mistake_v with_o other_o learned_a man_n the_o best_a being_n not_o exempt_a yet_o for_o the_o most_o part_n have_v make_v the_o great_a improvement_n of_o any_o of_o his_o predecessor_n in_o theory_n this_o learned_a hot_a author_n in_o the_o eight_o paragraph_n or_o thereabouts_o of_o his_o exercitation_n concern_v the_o heat_n of_o the_o blood_n take_v notice_n that_o there_o be_v three_o modes_n or_o sort_n of_o cause_n by_o which_o liquid_n grow_v hot._n first_o à _fw-la culido_fw-la ad_fw-la moto_fw-mi or_o by_o apply_v they_o to_o something_o that_o be_v hot_a as_o when_o water_n boil_v over_o the_o fire_n second_o when_o saline_n corrosive_n mutual_o act_v upon_o one_o another_o or_o on_o sulphureous_a body_n mix_v with_o they_o by_z an_z intense_a and_o powerful_a agitation_n three_o when_o a_o liquor_n abound_v with_o much_o spirit_n or_o sulphur_n take_v flame_n from_o some_o other_o body_n and_o in_o the_o next_o paragraph_n
he_o say_v that_o there_o be_v other_o way_n of_o calefaction_n as_o fermentation_n putrefaction_n and_o attrition_n but_o the_o sear_n only_o observable_a in_o solid_a body_n the_o design_n accension_n of_o which_o be_v to_o prove_v that_o since_o the_o blood_n have_v not_o any_o other_o body_n apply_v to_o communicate_v heat_n to_o it_o and_o since_o it_o be_v not_o impregnate_v with_o saline_n corrosive_n but_o be_v sufficient_o stock_v with_o sulphureous_a particle_n and_o since_o fermentation_n putrefaction_n and_o attrition_n be_v only_o the_o cause_n of_o heat_n in_o solid_a body_n it_o must_v needs_o be_v preserve_v in_o a_o continual_a heat_n by_o accension_n of_o its_o sulphureous_a pabulum_fw-la but_o if_o we_o do_v hot_a but_o due_o consider_v how_o heat_n be_v promote_v in_o all_o these_o several_a sort_n of_o substance_n it_o will_v present_o appear_v that_o in_o philosophy_n there_o be_v but_o one_o way_n by_o which_o all_o whether_o liquid_a or_o solid_a grow_v hot_a and_o if_o so_o than_o it_o will_v follow_v that_o whether_o we_o say_v the_o blood_n grow_v hot_a by_o apply_v of_o a_o hot_a thing_n to_o it_o or_o saline_n corrosive_n whether_o by_o fermentation_n accension_n or_o attrition_n it_o will_v be_v equivalent_o the_o same_o to_o make_v it_o evident_a heat_n then_o that_o there_o be_v but_o one_o way_n by_o which_o all_o body_n grow_v hot_a and_o that_o to_o say_v that_o the_o heat_n of_o it_o proceed_v from_o the_o application_n of_o other_o hot_a body_n saline_n corrosive_n accension_n fermentation_n or_o attrition_n be_v but_o to_o express_v the_o same_o thing_n several_a way_n since_o they_o be_v all_o equivalent_o perform_v the_o same_o way_n we_o be_v to_o consider_v what_o be_v the_o nature_n of_o hot_a body_n and_o wherein_o their_o power_n consist_v either_o to_o cause_n heat_v themselves_o or_o to_o communicate_v that_o power_n to_o other_o and_o because_o several_a remiss_a degree_n of_o heat_n differ_v only_o in_o proportion_n from_o fire_n which_o be_v the_o most_o intense_a and_o because_o that_o be_v free_a from_o those_o mask_n and_o cloud_n which_o intervene_v it_o and_o our_o sense_n when_o it_o be_v in_o more_o remiss_a degree_n the_o best_a way_n to_o understand_v the_o reason_n of_o heat_n will_v be_v to_o consider_v wherein_o the_o essential_a nature_n of_o fire_n consist_v among_o philosopher_n sight_n although_o it_o be_v very_o dubious_a what_o it_o be_v that_o cause_v fire_n to_o differ_v so_o much_o from_o all_o other_o substance_n yet_o it_o be_v by_o the_o consent_n of_o most_o modern_n and_o evident_a from_o flame_n itself_o and_o the_o manner_n that_o it_o destroy_v other_o body_n by_o that_o it_o be_v make_v up_o of_o rarify_v matter_n who_o particle_n be_v in_o a_o swift_a and_o powerful_a intestine_a agitation_n and_o of_o a_o peculiar_a figure_n and_o size_n and_o if_o fire_n be_v nothing_o else_o but_o matter_n rarefy_v and_o in_o a_o swift_a motion_n and_o from_o that_o swift_a and_o intense_a motion_n of_o matter_n affect_v our_o organ_n of_o sense_n we_o perceive_v heat_n we_o must_v needs_o conclude_v that_o whatever_o rarefy_v matter_n and_o put_v its_o part_n into_o a_o brisk_a motion_n be_v the_o cause_n of_o heat_n and_o although_o according_a to_o the_o diversity_n of_o subject_n that_o heat_n be_v disperse_v through_o it_o have_v different_a appearance_n to_o our_o sense_n and_o in_o most_o it_o be_v light_a which_o when_o it_o exist_v separate_o be_v always_o join_v with_o it_o it_o be_v obscure_v by_o the_o interposition_n and_o mixture_n of_o other_o matter_n yet_o if_o heat_n depend_v essential_o upon_o the_o effect_n that_o rarefy_v matter_n in_o motion_n have_v upon_o our_o sense_n it_o be_v undeniable_o true_a that_o heat_n be_v cause_v only_o one_o way_n remote_o and_o proximate_o with_o respect_n to_o matter_n in_o motion_n and_o the_o effect_v it_o then_o have_v upon_o we_o viz._n by_o put_v the_o part_n of_o matter_n into_o a_o brisk_a motion_n to_o affect_v our_o sense_n with_o violence_n enough_o to_o cause_v such_o a_o sensation_n but_o before_o i_o proceed_v to_o a_o further_a proof_n of_o what_o i_o have_v assert_v viz._n that_o there_o be_v but_o one_o way_n in_o philosophy_n by_o which_o all_o thing_n grow_v hot_a it_o be_v a_o controversy_n whether_o heat_v be_v actual_o in_o the_o body_n that_o cause_v it_o or_o whether_o matter_n in_o motion_n only_o produce_v such_o a_o effect_n as_o the_o sense_n of_o heat_n upon_o our_o sensory_a although_o it_o be_v not_o requisite_a i_o shall_v here_o publish_v my_o opinion_n of_o it_o yet_o it_o be_v necessary_a i_o shall_v explain_v what_o i_o mean_v when_o i_o say_v that_o heat_n be_v only_o produce_v one_o way_n or_o that_o heat_n be_v cause_v by_o put_v the_o part_n of_o matter_n into_o a_o swift_a motion_n or_o that_o heat_n depend_v on_o the_o effect_n which_o rarefy_v matter_n have_v upon_o our_o sense_n when_o it_o be_v in_o motion_n but_o if_o i_o be_v here_o to_o declare_v my_o opinion_n of_o sensation_n this_o point_n which_o be_v so_o different_o hold_v by_o various_a philosopher_n i_o shall_v say_v that_o as_o far_o as_o i_o can_v conceive_v of_o it_o heat_n be_v not_o actual_o in_o the_o body_n that_o cause_v it_o to_o be_v perceive_v by_o our_o sense_n but_o potential_o in_o as_o much_o as_o that_o body_n have_v a_o power_n to_o cause_v such_o a_o sensation_n and_o although_o a_o great_a many_o may_v wonder_v that_o fire_n which_o cause_n heat_v shall_v not_o be_v hot_a itself_o yet_o there_o be_v as_o much_o reason_n to_o believe_v that_o it_o be_v not_o as_o that_o a_o sword_n which_o will_v cause_v pain_n be_v not_o pain_n itself_o for_o those_o who_o think_v that_o fire_n which_o cause_n heat_v be_v heatt_z itself_o take_v the_o cause_n for_o the_o effect_n and_o affirm_v it_o to_o be_v so_o beside_o heat_v be_v only_o a_o sensation_n and_o it_o it_o be_v impossible_a there_o shall_v be_v a_o sensation_n where_o there_o be_v no_o sense_n it_o be_v impossible_a there_o shall_v be_v heat_n where_o there_o be_v only_a fire_n and_o no_o sense_n for_o it_o to_o work_v upon_o for_o heat_n be_v not_o a_o mode_n of_o matter_n rarefy_v and_o in_o motion_n but_o a_o effect_n of_o matter_n so_o modify_v but_o say_v they_o it_o be_v impossible_a for_o we_o to_o think_v so_o true_o if_o we_o be_v not_o direct_v in_o our_o thought_n by_o reason_n we_o may_v irrational_o think_v that_o matter_n in_o motion_n which_o only_o cause_v heat_n be_v heat_n but_o if_o our_o reason_n proceed_v upon_o those_o medium_n which_o our_o sense_n furnish_v we_o with_o and_o certain_o we_o can_v on_o no_o other_o we_o shall_v easy_o be_v induce_v to_o believe_v that_o the_o cause_n be_v not_o the_o effect_n there_o be_v a_o great_a deal_n of_o reason_n for_o we_o to_o believe_v so_o though_o none_o to_o the_o contrary_n when_o then_o i_o say_v that_o heat_n be_v only_o produce_v one_o way_n i_o mean_v that_o there_o be_v but_o one_o way_n to_o modify_v body_n so_o as_o to_o make_v they_o capable_a of_o cause_v heat_n when_o they_o affect_v our_o sensory_a and_o when_o i_o say_v that_o heat_n be_v cause_v by_o put_v the_o part_n of_o matter_n into_o motion_n i_o mean_v that_o a_o power_n of_o produce_v heat_n be_v cause_v so_o and_o when_o i_o say_v that_o heat_n depend_v on_o the_o effect_n that_o rarefy_v matter_n have_v upon_o our_o sense_n i_o mean_v it_o be_v cause_v by_o those_o affect_v our_o sense_n and_o because_o always_o when_o i_o have_v occasion_n to_o mention_v the_o cause_n of_o heat_n it_o will_v be_v too_o much_o circumlocution_n to_o say_v the_o power_n of_o cause_v heat_n be_v produce_v so_o or_o otherwise_o i_o shall_v use_v the_o word_n heat_v sometime_o to_o signify_v that_o motion_n of_o rarify_v matter_n which_o be_v sufficient_a to_o cause_v heat_n and_o shall_v call_v that_o motion_n heat_v in_o respect_n of_o the_o effect_n which_o it_o cause_v but_o to_o proceed_v to_o a_o further_o and_o more_o evident_a proof_n that_o heat_n prove_v or_o a_o power_n to_o produce_v it_o be_v only_o cause_v one_o way_n we_o be_v to_o consider_v how_o the_o motion_n of_o particle_n be_v carry_v on_o in_o all_o those_o which_o dr._n willis_n call_v different_a way_n of_o cause_v heat_n viz._n per_fw-la admotum_fw-la calidi_fw-la saline_n corrosive_n accension_n and_o even_o fermentation_n and_o putrefaction_n and_o first_o when_o water_n be_v put_v over_o the_o fire_n and_o heat_a per_fw-la admotum_fw-la calidi_fw-la the_o fine_a particle_n of_o fire_n penetrate_v the_o vessel_n be_v imbibe_v into_o the_o water_n and_o be_v fetter_v up_o and_o keep_v from_o fly_v away_o by_o the_o part_n of_o the_o liquor_n put_v they_o also_o into_o a_o quick_a motion_n from_o whence_o proceed_v a_o sensible_a heat_n in_o