instance_n of_o the_o production_n of_o heat_n and_o i_o shall_v also_o forbear_v to_o insist_v on_o such_o know_a thing_n as_o the_o incalescence_n observable_a upon_o the_o pour_v either_o of_o oil_n of_o vitriol_n upon_o salt_n of_o tartar_n in_o the_o make_n of_o tartarum_fw-la vitriolatum_fw-la or_o of_o aqua_fw-la fortis_fw-la upon_o silver_n or_o quicksilver_n in_o the_o dissolution_n of_o these_o metal_n but_o shall_v rather_o choose_v to_o mention_v some_o few_o instance_n not_o so_o notorious_a as_o the_o former_a but_o not_o unfit_a by_o their_o variety_n to_o exemplify_v several_a of_o the_o differ_a way_n of_o exciting_a heat_n and_o yet_o i_o shall_v not_o decline_v the_o mention_n of_o the_o most_o obvious_a and_o familiar_a instance_n of_o all_o namely_o the_o heat_n observe_v in_o quicklime_n upon_o the_o affusion_n of_o cold_a water_n because_o among_o learned_a man_n and_o especial_o peripatetic_n i_o find_v cause_n to_o be_v assign_v that_o be_v either_o just_o questionable_a or_o manifest_o erroneous_a for_o as_o to_o what_o be_v inculcate_v by_o the_o school_n about_o the_o incalescence_n of_o a_o mixture_n of_o quicklime_n and_o water_n by_o virtue_n of_o a_o suppose_a antiperistasis_n or_o invigoration_n of_o the_o internal_a heat_n of_o the_o lime_n by_o its_o be_v environ_v by_o cold_a water_n i_o have_v elsewhere_o show_v that_o this_o be_v but_o a_o imaginary_a cause_n by_o deliver_v upon_o experiment_n which_o any_o man_n may_v easy_o make_v that_o if_o instead_o of_o cold_a water_n the_o liquor_n be_v pour_v on_o very_o hot_a the_o ebullition_n of_o the_o lime_n will_v not_o be_v the_o less_o but_o rather_o the_o great_a and_o oil_n of_o turpentine_n which_o be_v a_o light_a and_o be_v look_v upon_o as_o a_o subtle_a liquor_n than_o water_n though_o it_o be_v pour_v quite_o cold_a on_o quicklime_n will_v not_o that_o i_o have_v observe_v grow_v so_o much_o as_o sensible_o hot_a with_o it_o and_o now_o i_o have_v mention_v the_o 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be_v quench_v proceed_v from_o the_o empyreuma_n as_o the_o chemist_n call_v it_o or_o impression_n leave_v by_o the_o violent_a fire_n that_o be_v employ_v to_o reduce_v the_o stone_n to_o lime_n but_o if_o by_o empyreuma_n be_v mean_v a_o bare_a impression_n make_v by_o the_o fire_n it_o will_v be_v more_o requisite_a than_o easy_a to_o declare_v intelligible_o in_o what_o that_o impression_n consist_v and_o how_o it_o operate_v to_o produce_v such_o considerable_a effect_n and_o if_o the_o effect_n be_v ascribe_v to_o swarm_n of_o atom_n of_o fire_n that_o remain_v adherent_a to_o the_o substance_n of_o the_o lime_n and_o be_v set_v at_o liberty_n to_o fly_v away_o by_o the_o liquor_n which_o seem_v to_o be_v argue_v by_o the_o slake_n of_o lime_n without_o water_n if_o it_o be_v for_o some_o time_n leave_v in_o the_o air_n whereby_o the_o atom_n of_o fire_n get_v opportunity_n to_o fly_v away_o by_o little_a and_o little_a if_o this_o i_o say_v be_v allege_v i_o will_v not_o deny_v 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if_o this_o be_v certain_a it_o will_v not_o be_v a_o slender_a proof_n that_o fixity_n may_v be_v mechanical_o produce_v and_o however_o the_o argument_n will_v be_v good_a in_o reference_n to_o the_o helmontian_n spagyrist_n for_o if_o as_o one_o will_v expect_v there_o do_v remain_v some_o particle_n of_o the_o menstruum_fw-la with_o those_o of_o the_o metal_n it_o will_v not_o be_v deny_v that_o two_o volatile_a substance_n may_v perfect_o fix_v one_o another_o and_o if_o as_o helmont_n seem_v to_o think_v the_o menstruum_fw-la be_v total_o abstract_v this_o supposition_n will_v the_o more_o favour_n our_o doctrine_n about_o fixity_n since_o if_o there_o be_v no_o material_a additament_n leave_v with_o the_o quicksilver_n the_o fixation_n can_v so_o reasonable_o be_v ascribe_v to_o any_o thing_n as_o to_o some_o new_a mechanical_a modification_n and_o particular_o to_o some_o change_n of_o texture_n introduce_v into_o the_o mercury_n itself_o and_o that_o you_o may_v think_v this_o the_o less_o improbable_a i_o will_v now_o proceed_v to_o some_o instance_n whereof_o the_o first_o shall_v be_v this_o that_o have_v put_v a_o mixture_n make_v of_o a_o certain_a proportion_n of_o two_o dry_a as_o well_o as_o volatile_a body_n viz._n sal_fw-la ammoniac_a and_o flower_n or_o very_o fine_a powder_n of_o sulphur_n to_o half_a its_o weight_n of_o common_a run_a mercury_n and_o elevate_v this_o mixture_n three_o or_o four_o time_n from_o it_o in_o a_o convenient_o shape_v and_o not_o over-wide_a glass_n the_o mercury_n that_o lie_v in_o the_o bottom_n in_o the_o form_n of_o a_o ponderous_a and_o somewhat_o purplish_a powder_n be_v by_o this_o operation_n so_o fix_v that_o it_o long_o endure_v a_o strong_a fire_n which_o at_o length_n be_v make_v so_o strong_a that_o it_o melt_v the_o glass_n and_o keep_v it_o melt_v without_o be_v strong_a enough_o to_o force_v up_o the_o mercury_n which_o by_o some_o trial_n not_o so_o proper_a to_o be_v here_o mention_v seem_v to_o have_v its_o salivate_a and_o emetic_n power_n extraordinary_o infringe_v and_o sometime_o quite_o suppress_v but_o this_o only_a upon_o the_o bye_n in_o all_o the_o other_o instance_n wherewith_o i_o shall_v conclude_v these_o note_n i_o shall_v employ_v one_o menstruum_fw-la oil_n of_o vitriol_n and_o show_v you_o the_o efficacy_n of_o it_o in_o fix_v some_o part_n of_o volatile_a body_n with_o some_o part_n of_o itself_o by_o which_o example_n it_o may_v appear_v that_o a_o volatile_a body_n may_v not_o only_o lessen_v the_o volatility_n of_o another_o body_n as_o in_o the_o late_o mention_v case_n of_o our_o spirituous_a sal_fw-la ammoniac_a but_o that_o two_o substance_n that_o apart_o be_v volatile_a may_v compose_v a_o three_o that_o will_v not_o only_o be_v less_o volatile_a but_o considerable_o if_o not_o altogether_o fix_v we_o mix_v then_o by_o degree_n about_o equal_a part_n of_o oil_n of_o vitriol_n and_o oil_n of_o turpentine_n and_o though_o each_o of_o they_o single_a especial_o the_o latter_a will_v ascend_v with_o a_o moderate_a fire_n in_o a_o sand-furnace_n yet_o after_o the_o distillation_n be_v end_v we_o have_v a_o considerable_a quantity_n sometime_o if_o i_o misremember_v not_o a_o five_o or_o six_o part_n of_o a_o caput_n mortuum_n black_a as_o a_o coal_n and_o whereof_o a_o great_a part_n be_v of_o a_o scarce_o to_o be_v expect_v fixtness_n in_o the_o fire_n to_o give_v a_o high_a proof_n of_o the_o disposition_n that_o oil_n of_o vitriol_n have_v to_o let_v some_o of_o its_o part_n grow_v fix_v by_o combination_n with_o those_o of_o a_o exceed_a volatile_a additament_n i_o mix_v this_o liquor_n with_o a_o equal_a or_o double_a weight_n of_o high_o rectify_v spirit_n of_o wine_n and_o not_o only_o after_o but_o sometime_o without_o previous_a digestion_n i_o find_v that_o the_o fluid_a part_n of_o the_o mixture_n be_v total_o abstract_v there_o will_v remain_v a_o pretty_a quantity_n of_o a_o black_a substance_n so_o fix_v as_o to_o afford_v just_a cause_n of_o wonder_n and_o because_o camphire_n be_v esteem_v the_o most_o fugitive_a of_o consistent_a body_n in_o regard_n that_o be_v but_o lay_v in_o the_o free_a air_n without_o any_o help_n of_o the_o fire_n it_o will_v fly_v all_o away_o i_o try_v what_o oil_n of_o vitriol_n abstract_v from_o camphire_n will_v do_v and_o find_v at_o the_o bottom_n of_o the_o retort_n a_o great_a quantity_n than_o one_o will_v expect_v of_o a_o substance_n as_o black_a as_o pitch_v and_o almost_o as_o far_o from_o the_o volatility_n as_o from_o the_o colour_n of_o camphire_n though_o it_o appear_v not_o that_o any_o of_o the_o gum_n have_v sublime_v into_o the_o neck_n of_o the_o retort_n from_o all_o which_o instance_n it_o seem_v manifest_o enough_o to_o follow_v that_o in_o many_o case_n there_o need_v nothing_o to_o make_v associate_v particle_n whether_o volatile_a or_o not_o become_v fix_v but_o either_o to_o implicate_v or_o entangle_v they_o among_o themselves_o or_o bring_v they_o to_o touch_v one_o another_o according_a to_o large_a portion_n of_o their_o surface_n or_o by_o both_o these_o way_n conjoint_o or_o by_o some_o other_o to_o procure_v the_o firm_a cohaesion_n of_o so_o many_o particle_n that_o the_o result_a corpuscle_n be_v too_o big_a or_o heavy_a to_o be_v by_o the_o degree_n of_o fire_n wherein_o they_o be_v say_v to_o be_v fix_v drive_v up_o into_o the_o air._n finis_fw-la experiment_n and_o note_n about_o the_o mechanical_a origine_fw-la or_o production_n of_o corrosiveness_n and_o corrosibility_n by_o the_o honourable_a robert_n boyle_n esq_n fellow_n of_o the_o r._n society_n london_n print_v by_o e._n flesher_n for_o r._n davis_n bookseller_n in_o oxford_n 1675._o experiment_n and_o note_n about_o the_o mechanical_a production_n of_o corrosiveness_n and_o corrosibility_n sect_n i._o about_o the_o mechanical_a origine_fw-la of_o corrosiveness_n i_o do_v not_o in_o the_o follow_a note_n treat_v of_o corrosiveness_n in_o their_o strict_a sense_n of_o the_o word_n who_o ascribe_v this_o quality_n only_o to_o liquor_n that_o be_v notable_o acid_a or_o sour_a such_o as_o aqua_fw-la fortis_fw-la spirit_n of_o salt_n vinegar_n juice_n of_o lemon_n etc._n etc._n but_o that_o i_o may_v not_o be_v oblige_v to_o overlook_v urinous_a oleous_a and_o divers_a other_o solvent_n or_o to_o coin_v new_a name_n for_o their_o differ_v solutive_a power_n i_o presume_v to_o employ_v the_o word_n corrosiveness_n in_o a_o great_a latitude_n so_o as_o to_o make_v it_o almost_o equivalent_a to_o the_o solutive_a power_n of_o liquor_n refer_v other_o menstruum_n to_o those_o that_o be_v corrosive_a or_o fret_a though_o not_o always_o as_o to_o the_o most_o proper_a yet_o as_o to_o the_o principal_a and_o best_a know_a species_n which_o i_o the_o less_o scruple_n here_o to_o do_v because_o i_o have_v etc._n elsewhere_o more_o distinct_o enumerate_v and_o sort_v the_o solvent_n of_o body_n the_o attribute_n that_o seem_v the_o most_o proper_a to_o qualify_v a_o liquor_n to_o be_v corrosive_a be_v all_o of_o they_o mechanical_a be_v such_o as_o be_v these_o that_o follow_v first_o that_o the_o menstruum_fw-la consist_v of_o or_o abound_v with_o corpuscle_n not_o too_o big_a to_o get_v in_o at_o the_o pore_n or_o commissure_v of_o the_o body_n to_o be_v dissolve_v nor_o yet_o be_v so_o very_a minute_n as_o to_o pass_v through_o they_o as_o the_o beam_n of_o light_n do_v through_o glass_n or_o to_o be_v unable_a by_o reason_n of_o their_o great_a slenderness_n and_o flexibility_n to_o disjoin_v the_o part_n they_o invade_v second_o that_o these_o corpuscle_n be_v of_o a_o shape_n fit_v they_o to_o insinuate_v themselves_o more_o or_o less_o into_o the_o pore_n or_o commissure_v abovementioned_a in_o order_n to_o the_o dissociate_a of_o the_o solid_a part_n three_o that_o they_o have_v a_o competent_a degree_n of_o solidity_n to_o disjoin_v the_o particle_n of_o the_o body_n to_o be_v dissolve_v which_o solidity_n of_o solvent_a corpuscle_n be_v somewhat_o distinct_a from_o their_o bulk_n mention_v in_o the_o first_o qualification_n as_o may_v appear_v by_o compare_v a_o stalk_n of_o wheat_n and_o a_o metalline_a wire_n of_o the_o same_o diameter_n or_o a_o flexible_a wand_n of_o osier_n of_o the_o bigness_n of_o one_o little_a finger_n with_o a_o rigid_a rod_n of_o iron_n of_o the_o same_o length_n and_o thickness_n four_o that_o the_o corpuscle_n of_o the_o menstruum_fw-la be_v agile_a and_o advantage_v for_o motion_n such_o as_o be_v fit_a to_o disjoin_v the_o part_n of_o the_o invade_v body_n either_o by_o their_o shape_n or_o their_o minuteness_n or_o their_o fitness_n to_o have_v their_o action_n befriend_v by_o adjuvant_fw-la cause_n such_o as_o may_v be_v first_o the_o pressure_n of_o the_o atmosphere_n which_o may_v impel_v they_o into_o the_o pore_n of_o body_n not_o fill_v with_o a_o substance_n so_o resist_v as_o common_a air_n as_o we_o see_v
matter_n boil_v over_o and_o though_o there_o be_v a_o great_a commotion_n excite_v by_o the_o action_n and_o reaction_n of_o the_o ingredient_n which_o be_v attend_v with_o a_o copious_a froth_n and_o a_o hiss_a noise_n yet_o it_o be_v a_o pretty_a while_n ere_o the_o glass_n be_v sensible_o warm_a on_o the_o outside_n but_o by_o that_o time_n the_o salt_n be_v all_o dissolve_v the_o liquor_n in_o the_o thermoscope_n appear_v to_o be_v impel_v up_o about_o three_o inch_n and_o a_o half_a and_o yet_o if_o my_o memory_n do_v not_o much_o deceive_v i_o i_o have_v find_v that_o by_o mix_v salt_n of_o tartar_n with_o another_o salt_n the_o texture_n of_o the_o fix_a alkali_n be_v so_o alter_v that_o upon_o the_o affusion_n of_o spirit_n of_o verdigrease_n make_v without_o spirit_n of_o vinegar_n and_o spirit_n of_o wine_n though_o there_o ensue_v a_o great_a conflict_n with_o noise_n and_o bubble_n yet_o instead_o of_o a_o incalescence_n a_o considerable_a degree_n of_o coldness_n be_v 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be_v that_o when_o the_o minute_n part_n of_o a_o body_n be_v in_o or_o arrive_v at_o such_o a_o state_n that_o they_o be_v more_o slow_o or_o faint_o agitate_a then_o those_o of_o our_o finger_n or_o other_o organ_n of_o feeling_n we_o judge_v they_o cold_a these_o two_o thing_n lay_v together_o seem_v plain_o enough_o to_o argue_v that_o a_o privation_n or_o negation_n of_o that_o local_a motion_n that_o be_v requisite_a to_o constitute_v heat_n may_v suffice_v for_o the_o denominate_v a_o body_n cold_a as_o coldness_n be_v a_o quality_n of_o the_o object_n which_o as_o it_o be_v perceive_v by_o the_o mind_n be_v also_o a_o affection_n of_o the_o sentient_a and_o therefore_o a_o imminution_n of_o such_o a_o degree_n of_o former_a motion_n as_o be_v necessary_a to_o make_v a_o body_n hot_a as_o to_o sense_n and_o which_o be_v sufficient_a to_o the_o production_n of_o sensible_a coldness_n may_v be_v mechanical_o make_v since_o slowness_n as_o well_o as_o swiftness_n be_v a_o mode_n 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to_o the_o fire_n and_o the_o other_o be_v benumb_v with_o frost_n and_o indeed_o the_o custom_n of_o speak_v have_v introduce_v a_o ambiguity_n into_o the_o word_n cold_a which_o often_o occasion_n mistake_v not_o easy_o without_o much_o attention_n and_o sometime_o circumlocution_n also_o to_o be_v avoid_v since_o usual_o by_o cold_a be_v mean_v that_o which_o immediate_o affect_v the_o sensory_a of_o he_o that_o pronounce_v a_o body_n cold_a whereas_o sometime_o it_o be_v take_v in_o a_o more_o general_a notion_n for_o such_o a_o negation_n or_o imminution_n of_o motion_n as_o though_o it_o operate_v not_o perceivable_o on_o our_o sense_n do_v yet_o upon_o other_o body_n and_o sometime_o also_o it_o be_v take_v which_o be_v perhaps_o the_o more_o philosophical_a sense_n for_o a_o perception_n make_v in_o and_o by_o the_o mind_n of_o the_o alteration_n produce_v in_o the_o corporeal_a organ_n by_o the_o operation_n of_o that_o whatever_o it_o be_v on_o who_o account_n a_o body_n be_v 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instance_n new_o mention_v and_o especial_o that_o of_o flame_n which_o be_v a_o body_n and_o by_o the_o diffusion_n that_o metal_n acquire_v when_o they_o be_v melt_v and_o by_o the_o operation_n of_o heat_n that_o be_v exercise_v by_o hot_a body_n upon_o other_o in_o what_o posture_n or_o situation_n soever_o the_o body_n to_o be_v heat_v be_v apply_v to_o they_o as_o a_o thorough_o ignited_a coal_n will_v appear_v every_o way_n red_a and_o will_v melt_v wax_n and_o kindle_v brimstone_n whether_o the_o body_n be_v apply_v to_o the_o upper_a or_o to_o the_o low_a or_o to_o any_o other_o part_n of_o the_o burn_a coal_n and_o congruous_o to_o this_o notion_n though_o air_n and_o water_n be_v move_v never_o so_o vehement_o as_o in_o high_a wind_n and_o cataract_n yet_o we_o be_v not_o to_o expect_v that_o they_o shall_v be_v manifest_o hot_a because_o the_o vehemency_n belong_v to_o the_o progressive_a motion_n of_o the_o whole_a body_n notwithstanding_o which_o the_o part_n it_o 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numerous_a stroke_n upon_o a_o man_n face_n and_o the_o brisk_a commotion_n of_o the_o spirit_n and_o other_o small_a particle_n that_o may_v thence_o ensue_v they_o may_v perchance_o occasion_v the_o production_n of_o that_o quality_n if_o some_o attention_n be_v employ_v in_o consider_v the_o former_o propose_v notion_n of_o the_o nature_n of_o heat_n it_o may_v not_o be_v difficult_a to_o discern_v that_o the_o mechanical_a production_n of_o it_o may_v be_v divers_a way_n effect_v for_o except_v in_o some_o few_o anomalous_a case_n wherein_o the_o regular_a course_n of_o thing_n happen_v to_o be_v overrule_v by_o whatever_o way_n the_o insensible_a part_n of_o a_o body_n be_v put_v into_o a_o very_a confuse_a and_o vehement_a agitation_n by_o the_o same_o way_n heat_n may_v be_v introduce_v into_o that_o body_n agreeable_o to_o which_o doctrine_n as_o there_o be_v several_a agent_n and_o operation_n by_o which_o this_o calorific_a motion_n if_o i_o may_v so_o call_v it_o may_v be_v excite_v so_o there_o may_v be_v several_a way_n of_o mechanical_o produce_v heat_n and_o many_o experiment_n may_v be_v reduce_v to_o almost_o each_o of_o they_o chance_v itself_o have_v in_o the_o laboratory_n of_o chemist_n afford_v divers_a phaenomena_n referrable_a to_o one_o or_o other_o of_o those_o head_n many_o of_o the_o more_o familiar_a instance_n applicable_a to_o our_o present_a purpose_n have_v be_v long_o since_o collect_v by_o our_o just_o famous_a verulam_n in_o his_o short_a but_o excellent_a paper_n de_fw-fr forma_fw-la calidi_fw-la wherein_o though_o i_o do_v not_o acquiesce_v in_o every_o thing_n i_o meet_v with_o there_o he_o seem_v to_o have_v be_v at_o least_o among_o the_o modern_n the_o person_n that_o have_v first_o handle_v the_o doctrine_n of_o heat_n like_o a_o experimental_a philosopher_n i_o shall_v therefore_o decline_v accumulate_v a_o multitude_n of_o
salt_n vehement_a enough_o to_o produce_v a_o sensible_a heat_n especial_o if_o we_o admit_v that_o there_o be_v such_o a_o change_n make_v in_o the_o pore_n as_o occasion_n a_o great_a increase_n of_o this_o agitation_n by_o the_o ingress_n and_o action_n of_o some_o subtle_a ethereal_a matter_n from_o which_o alone_a monsieur_n des_fw-fr cartes_n ingenious_o attempt_v to_o derive_v the_o incalescence_n of_o lime_n and_o water_n as_o well_o as_o that_o of_o metal_n dissolve_v in_o corrosive_a liquor_n though_o as_o to_o the_o phaenomena_n we_o have_v be_v consider_v there_o seem_v at_o least_o to_o concur_v a_o peculiar_a disposition_n of_o body_n wherein_o heat_n be_v to_o be_v produce_v to_o do_v one_o or_o both_o of_o these_o two_o thing_n namely_o to_o retain_v good_a store_n of_o the_o igneous_a effluvia_fw-la and_o to_o be_v by_o their_o adhesion_n or_o some_o other_o operation_n of_o the_o fire_n reduce_v to_o such_o a_o texture_n of_o its_o component_a particle_n as_o to_o be_v fit_a to_o have_v they_o easy_o penetrate_v and_o brisk_o as_o well_o as_o copious_o dissipate_v by_o invade_v water_n and_o this_o conjecture_n for_o i_o propose_v it_o as_o no_o other_o seem_v favour_v by_o divers_a phaenomena_n some_o whereof_o i_o shall_v now_o annex_v for_o here_o it_o may_v be_v observe_v that_o both_o the_o dissolve_a salt_n of_o tartar_n late_o mention_v and_o the_o artificial_a liquor_n that_o grow_v hot_a with_o the_o natural_a reacquire_v that_o disposition_n to_o incalescence_n upon_o a_o bare_a constipation_n or_o close_a texture_n of_o the_o part_n from_o the_o superfluous_a moisture_n they_o be_v drown_v in_o before_o the_o heat_n that_o bring_v they_o to_o this_o texture_n have_v be_v so_o gentle_a that_o it_o be_v no_o way_n likely_a that_o the_o igneous_a exhalation_n can_v themselves_o produce_v such_o a_o heat_n or_o at_o least_o that_o they_o shall_v adhere_v in_o such_o number_n as_o must_v be_v requisite_a to_o such_o a_o effect_n unless_o the_o texture_n of_o the_o salt_n of_o tartar_n or_o other_o body_n do_v peculiar_o dispose_v it_o to_o detain_v they_o since_o i_o have_v find_v by_o trial_n that_o shall_v ammoniac_a dissolve_v in_o water_n exper._n iv_o though_o boil_v up_o with_o a_o brisk_a fire_n to_o a_o dry_a salt_n will_v upon_o its_o be_v again_o dissolve_v in_o water_n not_o produce_v any_o heat_n but_o a_o very_a considerable_a degree_n of_o cold._n i_o shall_v add_v that_o though_o one_o will_v expect_v a_o great_a cognation_n between_o the_o particle_n of_o fire_n adhere_v to_o quicklime_n and_o those_o of_o high_a rectify_a spirit_n of_o wine_n which_o be_v of_o so_o igneous_a a_o nature_n as_o to_o be_v total_o inflammable_a yet_o i_o have_v not_o find_v that_o the_o affusion_n of_o alkaol_n of_o wine_n upon_o quicklime_n will_v produce_v any_o sensible_a incalescence_n or_o any_o visible_a dissolution_n or_o dissipation_n of_o the_o lime_n as_o common_a water_n will_v have_v do_v though_o it_o seem_v to_o be_v greedy_o enough_o soak_v in_o by_o the_o lump_n of_o lime_n and_o i_o further_o try_v that_o if_o on_o this_o lime_n so_o drench_v i_o pour_v cold_a water_n there_o ensue_v no_o manifest_a heat_n nor_o do_v i_o so_o much_o as_o find_v the_o lump_n swell_v and_o thereby_o break_v till_o some_o hour_n after_o which_o seem_v to_o argue_v that_o the_o texture_n of_o the_o lime_n be_v such_o as_o to_o admit_v the_o particle_n of_o the_o spirit_n of_o wine_n into_o some_o of_o its_o pore_n which_o be_v either_o large_a or_o more_o congruous_a without_o admit_v it_o into_o the_o most_o numerous_a one_o whereinto_o the_o liquor_n must_v be_v receive_v to_o be_v able_a sudden_o to_o dissipate_v the_o corpuscle_n of_o lime_n into_o their_o minute_a particle_n into_o which_o corpuscle_n it_o seem_v that_o the_o change_n that_o the_o aqueous_a particle_n receive_v by_o associate_a with_o the_o spirituous_a one_o make_v they_o far_o less_o fit_a to_o penetrate_v and_o move_v brisk_o there_o than_o if_o they_o have_v enter_v alone_o i_o make_v also_o a_o experiment_n that_o seem_v to_o favour_v our_o conjecture_n by_o show_v how_o much_o the_o disposition_n of_o lime_n to_o incalescence_n may_v depend_v upon_o a_o idoneous_a texture_n and_o the_o experiment_n as_o i_o find_v it_o register_v in_o one_o of_o my_o memorial_n be_v this_o exper._n v._n upon_o quicklime_n we_o put_v in_o a_o retort_n as_o much_o moderate_o strong_a spirit_n of_o wine_n as_o will_v drench_v it_o and_o swim_v a_o pretty_a way_n above_o it_o and_o then_o distil_v with_o a_o gentle_a fire_n we_o draw_v off_o some_o spirit_n of_o wine_n much_o strong_a than_o that_o which_o have_v be_v put_v on_o and_o then_o the_o phlegm_n follow_v it_o the_o fire_n be_v increase_v which_o bring_v over_o a_o good_a deal_n of_o phlegmatic_a strengthless_a liquor_n by_o which_o one_o will_v have_v think_v that_o the_o quicklime_n have_v be_v slake_v but_o when_o the_o remain_a matter_n have_v be_v take_v out_o 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lime_n have_v to_o grow_v hot_a with_o water_n depend_v much_o on_o some_o peculiar_a texture_n since_o the_o aqueous_a part_n that_o one_o will_v think_v capable_a of_o quench_v all_o or_o most_o of_o the_o atom_n of_o fire_n that_o be_v suppose_v to_o adhere_v to_o quicklime_n do_v not_o near_o so_o much_o weaken_v the_o disposition_n of_o it_o to_o incalescence_n as_o the_o accession_n of_o the_o spirituous_a corpuscle_n and_o their_o contexture_n with_o those_o of_o the_o lime_n increase_v that_o igneous_a disposition_n and_o that_o there_o may_v intervene_v such_o a_o association_n seem_v to_o i_o the_o more_o probable_a not_o only_o because_o much_o of_o the_o distil_a liquor_n be_v as_o phlegmatic_a as_o if_o it_o have_v be_v rob_v of_o its_o more_o active_a part_n but_o because_o i_o have_v sometime_o have_v spirit_n of_o wine_n come_v over_o with_o quicklime_n not_o in_o unobserved_a steam_n but_o white_a fume_n to_o which_o i_o shall_v add_v that_o beside_o that_o the_o taste_n and_o perhaps_o odour_n of_o the_o spirit_n of_o wine_n be_v often_o manifest_o change_v by_o a_o well-made_a distillation_n from_o quicklime_n i_o have_v sometime_o find_v that_o liquor_n to_o give_v the_o lime_n a_o kind_n of_o alcalizat_n penetrancy_n not_o to_o say_v fieriness_n of_o taste_n that_o be_v very_o brisk_a and_o remarkable_a but_o i_o will_v not_o undertake_v that_o every_o experimenter_n nor_o i_o myself_o shall_v always_o make_v trial_n of_o this_o kind_n with_o the_o same_o success_n that_o i_o have_v in_o those_o above_o recite_v in_o regard_n that_o i_o have_v find_v quick-limes_a to_o differ_v much_o not_o only_o according_a to_o the_o degree_n of_o their_o calcination_n and_o to_o their_o recentness_n but_o also_o and_o that_o especial_o according_a to_o the_o differ_a nature_n of_o the_o stone_n and_o other_o body_n calcine_v which_o observation_n engage_v i_o the_o more_o to_o propose_v what_o have_v be_v hitherto_o deliver_v about_o quicklime_n as_o only_a narrative_n and_o a_o conjecture_n which_o i_o now_o perceive_v have_v detain_v we_o so_o long_o that_o i_o be_o oblige_v to_o hasten_v to_o the_o remain_a experiment_n and_o to_o be_v the_o more_o succinct_a in_o deliver_v they_o exper._n vi_o and_o it_o will_v be_v convenient_a to_o begin_v with_o a_o instance_n or_o two_o of_o the_o production_n of_o heat_n wherein_o there_o appear_v not_o to_o intervene_v any_o thing_n in_o the_o part_n of_o the_o agent_n or_o patient_n but_o local_a motion_n and_o the_o natural_a effect_n of_o it_o and_o as_o to_o this_o sort_n of_o experiment_n a_o little_a attention_n and_o reflection_n may_v make_v some_o familiar_a phaenomenon_n apposite_a to_o our_o present_a purpose_n when_o for_o example_n a_o smith_n do_v hasty_o hammer_v a_o nail_n or_o such_o like_a piece_n of_o iron_n the_o hammer_v metal_n will_v grow_v exceed_o hot_a and_o yet_o
of_o section_n i._o show_n that_o a_o considerable_a degree_n of_o cold_a be_v produce_v by_o the_o dissolution_n of_o sal_fw-la ammoniac_a in_o common_a water_n yet_o by_o a_o additament_n though_o but_o single_a the_o texture_n of_o it_o may_v be_v so_o alter_v that_o instead_o of_o cold_a a_o notable_a degree_n of_o heat_n will_v be_v produce_v if_o it_o be_v dissolve_v in_o that_o liquor_n for_o the_o manifestation_n of_o which_o we_o devise_v the_o follow_a experiment_n we_o take_v quicklime_n and_o slake_v it_o in_o common_a cold_a water_n that_o all_o the_o igneous_a or_o other_o particle_n to_o which_o its_o power_n of_o heat_n that_o liquor_n be_v ascribe_v may_v be_v extract_v and_o imbibe_v and_o so_o the_o calx_fw-la free_v from_o they_o then_o on_o the_o remain_a powder_n fresh_a water_n be_v often_o pour_v that_o all_o adhere_a relic_n of_o salt_n may_v be_v wash_v off_o after_o this_o the_o thus_o dulcify_v calx_fw-la be_v again_o well_o dry_v be_v mingle_v with_o a_o equal_a weight_n of_o powder_a sal_fw-la ammoniac_a and_o have_v with_o a_o strong_a fire_n melt_v the_o mass_n the_o mixture_n be_v pour_v out_o and_o be_v afterward_o beat_v to_o powder_n have_v give_v it_o a_o competent_a time_n to_o grow_v cold_a we_o put_v two_o or_o three_o ounce_n of_o it_o into_o a_o wide-mouthed_a glass_n and_o pour_v water_n upon_o it_o within_z about_o a_o minute_n of_o a_o hour_n the_o mixture_n grow_v warm_a and_o quick_o attain_v so_o intense_a a_o heat_n that_o i_o can_v not_o hold_v the_o glass_n in_o my_o hand_n and_o though_o this_o heat_n do_v not_o long_o last_v at_o the_o same_o height_n it_o continue_v to_o be_v very_o sensible_a for_o a_o considerable_a time_n after_o exper._n xi_o to_o confirm_v this_o experiment_n by_o a_o notable_a variation_n we_o take_v fine_o powder_v sal_fw-la ammoniac_a and_o file_n or_o scale_n of_o steel_n and_o when_o they_o be_v very_o diligent_o mix_v for_o that_o circumstance_n ought_v to_o be_v observe_v we_o cause_v they_o to_o be_v gradual_o sublime_v in_o a_o glass_n vessel_n give_v a_o smart_a fire_n towards_o the_o latter_a end_n by_o this_o operation_n so_o little_a of_o the_o mixture_n ascend_v that_o as_o we_o desire_v far_o the_o great_a part_n of_o the_o shall_v ammoniac_a stay_v at_o the_o bottom_n with_o the_o metal_n then_o take_v out_o the_o caput_fw-la mortuum_fw-la i_o give_v it_o time_n thorough_o to_o cool_v but_o in_o a_o glass_n well_o stop_v that_o it_o may_v not_o imbibe_n the_o moisture_n of_o the_o air_n as_o it_o be_v very_o apt_a to_o do_v and_o last_o though_o the_o file_n of_o steel_n as_o well_o as_o the_o shall_v ammoniac_a be_v body_n actual_o cold_a and_o so_o may_v be_v think_v likely_a to_o increase_v not_o check_n the_o coldness_n wont_a to_o be_v produce_v in_o water_n by_o that_o salt_n yet_o put_v the_o mixture_n into_o common_a water_n there_o ensue_v as_o we_o expect_v a_o intense_a degree_n of_o heat_n and_o i_o remember_v that_o have_v sublime_v the_o forementioned_a salt_n in_o distinct_a vessel_n with_o the_o file_n of_o steel_n and_o with_o file_n of_o copper_n and_o for_o curiosity_n sake_n keep_v one_o of_o the_o caput_fw-la mortuums_fw-la for_o i_o can_v certain_o call_v to_o mind_n which_o of_o the_o two_o it_o be_v divers_a month_n if_o i_o mistake_v not_o eight_z or_o nine_o we_o at_o length_n take_v it_o out_o of_o the_o vessel_n wherein_o it_o have_v be_v keep_v careful_o stop_v and_o upon_o trial_n be_v not_o deceive_v in_o have_v expect_v that_o all_o that_o while_o the_o disposition_n to_o give_v cold_a water_n a_o notable_a degree_n of_o heat_n be_v preserve_v in_o it_o exper._n xii_o if_o experiment_n be_v make_v after_o the_o above_o recite_v manner_n with_o sal_fw-la ammoniac_a and_o other_o mineral_n body_n than_o iron_n and_o copper_n it_o be_v not_o improbable_a that_o some_o of_o the_o emerge_a phaenomena_n will_v be_v find_v to_o confirm_v what_o have_v be_v say_v of_o the_o interest_n of_o texture_n and_o some_o few_o other_o mechanical_a affection_n in_o the_o production_n of_o heat_n and_o cold._n which_o conjecture_n be_v somewhat_o favour_v by_o the_o follow_a trial._n three_o ounce_n of_o antimony_n and_o a_o equal_a weight_n of_o sal_fw-la ammoniac_a be_v diligent_o powder_v and_o mix_v be_v by_o degree_n of_o fire_n sublime_v in_o a_o glass-vessel_n by_o which_o operation_n we_o obtain_v three_o differ_a substance_n which_o we_o cause_v to_o be_v separately_z powder_v when_o they_o be_v take_v out_o of_o the_o sublime_a glass_n lest_o the_o air_n or_o time_n shall_v make_v any_o change_n in_o they_o and_o have_v before_o put_v the_o ball_n of_o a_o good_a seal_a weatherglass_n for_o a_o while_n into_o water_n that_o the_o spirit_n of_o wine_n may_v be_v bring_v to_o the_o temper_n of_o the_o external_a liquor_n we_o put_v on_o a_o convenient_a quantity_n of_o the_o powder_a caput_fw-la mortuum_fw-la which_o amount_v to_o two_o ounce_n and_o seem_v to_o be_v little_a other_o than_o antimony_n which_o according_o do_v scarce_o sensible_o raise_v the_o spirit_n of_o wine_n in_o the_o thermoscope_n though_o that_o be_v a_o tender_a one_o then_o lay_v aside_o that_o water_n and_o put_v the_o instrument_n into_o fresh_a of_o the_o same_o temper_n we_o put_v to_o it_o a_o very_a yellow_a sublimate_n that_o ascend_v high_a than_o the_o other_o part_n and_o seem_v to_o consist_v of_o the_o more_o sulphureous_a flower_n of_o the_o antimony_n with_o a_o mixture_n of_o the_o more_o volatile_a part_n of_o the_o shall_v ammoniac_a and_o this_o substance_n make_v the_o tinct_a spirit_n in_o the_o thermoscope_n descend_v very_o slow_o about_o a_o quarter_n of_o a_o inch_n but_o when_o the_o instrument_n be_v put_v into_o fresh_a water_n of_o the_o same_o temper_n and_o we_o have_v put_v in_o some_o of_o the_o powder_n of_o the_o low_a sort_n of_o sublimate_n which_o be_v dark_a colour_v though_o both_o the_o antimony_n and_o sal_fw-la ammoniac_a it_o consist_v of_o have_v be_v long_o expose_v to_o the_o action_n of_o a_o sublime_a heat_n yet_o the_o water_n be_v thereby_o speedy_o and_o notable_o cool_v insomuch_o that_o the_o spirit_n of_o wine_n in_o the_o weatherglass_n hasty_o descend_v and_o continue_v to_o sink_v till_o by_o our_o guess_n it_o have_v fall_v not_o much_o short_a of_o three_o inch_n of_o these_o phaenomena_n the_o etiology_n as_o some_o modern_n call_v the_o theory_n which_o propose_v the_o cause_n of_o thing_n be_v more_o easy_a to_o be_v find_v by_o a_o little_a consideration_n than_o to_o be_v make_v out_o in_o few_o word_n we_o make_v also_o a_o experiment_n like_o that_o above_o recite_v by_o sublime_v three_o ounce_n a_o piece_n of_o minium_n and_o sal_fw-la ammoniac_a in_o which_o trial_n we_o find_v that_o though_o in_o the_o caput_fw-la mortuum_fw-la the_o salt_n have_v notable_o wrought_v upon_o the_o calx_fw-la of_o lead_n and_o be_v in_o part_n associate_v with_o it_o as_o appear_v by_o the_o whiteness_n of_o the_o say_v caput_fw-la mortuum_fw-la by_o its_o sweetish_a taste_n and_o by_o the_o weight_n which_o exceed_v four_o dram_n that_o of_o all_o the_o minium_n yet_o a_o convenient_a quantity_n of_o this_o powder_a mixture_n be_v put_v into_o water_n wherein_o the_o former_a weatherglass_n have_v be_v keep_v a_o while_n the_o tinct_a spirit_n of_o wine_n be_v not_o manifest_o either_o raise_v or_o depress_v and_o when_o in_o another_o glass_n we_o prosecute_v the_o trial_n with_o the_o shall_v ammoniac_a that_o have_v be_v sublime_v from_o the_o minium_n it_o do_v indeed_o make_v the_o spirit_n of_o wine_n descend_v but_o scarce_o a_o quarter_n so_o much_o as_o it_o have_v be_v make_v to_o fall_v by_o the_o late_o mention_v sublimate_n of_o sal_fw-la ammoniac_a and_o antimony_n exper._n xiii_o it_o be_v know_v that_o many_o learned_a man_n beside_o several_a chemical_a writer_n ascribe_v the_o incalescence_n that_o be_v meet_v with_o in_o the_o dissolution_n of_o metal_n to_o a_o conflict_n arise_v from_o a_o certain_a antipathy_n or_o hostility_n which_o they_o suppose_v between_o the_o conflict_a body_n and_o particular_o between_o the_o acid_n salt_n of_o the_o one_o and_o the_o alcalizate_a salt_n whether_o fix_v or_o volatile_a of_o the_o other_o but_o since_o this_o doctrine_n suppose_v a_o hatred_n between_o inanimate_a body_n in_o which_o it_o be_v hard_a to_o conceive_v how_o there_o can_v be_v any_o true_a passion_n and_o do_v not_o intelligible_o declare_v by_o what_o mean_v their_o suppose_a hostility_n produce_v heat_n it_o be_v not_o likely_a that_o for_o these_o and_o some_o other_o reason_n inquisitive_a naturalist_n will_v easy_o acquiesce_v in_o it_o and_o on_o the_o other_o side_n it_o may_v be_v consider_v whether_o it_o be_v not_o more_o probable_a that_o heat_n sudden_o produce_v in_o mixture_n proceed_v either_o from_o a_o
very_a quick_a and_o copious_a diffusion_n of_o the_o part_n of_o one_o body_n through_o those_o of_o another_o whereby_o both_o be_v confuse_o tumble_v and_o put_v into_o a_o calorific_a motion_n or_o from_o this_o that_o the_o part_n of_o the_o dissolve_a body_n come_v to_o be_v every_o way_n in_o great_a number_n violent_o scatter_v or_o from_o the_o fierce_a and_o confuse_a shock_n or_o justling_n of_o the_o corpuscle_n of_o the_o conflict_a body_n or_o mass_n which_o may_v be_v suppose_v to_o have_v the_o motion_n of_o their_o part_n differ_o modify_v according_o to_o their_o respective_a nature_n or_o from_o this_o that_o by_o the_o plentiful_a ingress_n of_o the_o corpuscle_n of_o the_o one_o into_o the_o almost_o commensurate_a part_n of_o the_o other_o the_o motion_n of_o some_o etherial_a matter_n that_o be_v wont_n before_o swift_o to_o permeate_n the_o distinct_a body_n come_v to_o be_v check_v and_o disturb_v and_o force_v to_o either_o brandish_n or_o whirl_v about_o the_o part_n in_o a_o confuse_a manner_n till_o it_o have_v settle_v itself_o a_o free_a passage_n through_o the_o new_a mixture_n almost_o as_o the_o light_n do_v through_o divers_a trouble_a liquor_n and_o vitrified_a body_n which_o at_o length_n it_o make_v transparent_a but_o without_o here_o engage_v in_o a_o solemn_a examination_n of_o the_o hypothesis_n of_o alcali_n and_o acidum_fw-la and_o without_o determine_v whether_o any_o one_o or_o more_o of_o the_o new_o mention_v mechanical_a cause_n or_o whether_o some_o other_o that_o i_o have_v not_o yet_o name_v be_v to_o be_v entitle_v to_o the_o effect_n it_o will_v not_o be_v impertinent_a to_o propose_v divers_a instance_n of_o the_o production_n of_o heat_n by_o the_o operation_n of_o one_o agent_n oil_n of_o vitriol_n that_o it_o may_v be_v consider_v whether_o it_o be_v likely_a that_o this_o single_a agent_n shall_v upon_o the_o score_n of_o antipathy_n or_o that_o of_o its_o be_v a_o acid_n menstruum_fw-la be_v able_a to_o produce_v a_o intense_a heat_n in_o many_o body_n of_o so_o differ_v nature_n as_o be_v some_o of_o those_o that_o we_o shall_v have_v occasion_n to_o name_n and_o now_o i_o proceed_v to_o the_o experiment_n themselves_o take_v some_o ounce_n of_o strong_a oil_n of_o vitriol_n and_o shake_v it_o with_o three_o or_o four_o time_n its_o weight_n of_o common_a water_n though_o both_o the_o liquor_n be_v cold_a when_o they_o be_v put_v together_o yet_o their_o mixture_n will_v in_o a_o trice_n grow_v intense_o hot_a and_o continue_v considerable_o so_o for_o a_o good_a while_n in_o this_o case_n it_o can_v probable_o be_v pretend_v by_o the_o chemist_n that_o the_o heat_n arise_v from_o the_o conflict_n of_o the_o acid_n and_o alcalizate_a salt_n abound_v in_o the_o two_o liquor_n since_o the_o common_a water_n be_v suppose_v a_o elementary_a body_n devoid_a of_o all_o salt_n and_o at_o least_o be_v a_o insipid_a liquor_n it_o will_v scarce_o be_v think_v to_o have_v alcali_n enough_o to_o produce_v by_o its_o reaction_n so_o intense_a a_o heat_n that_o the_o heat_v emergent_a upon_o such_o a_o mixture_n may_v be_v very_o great_a when_o the_o quantity_n of_o the_o mingle_a liquor_n be_v considerable_o so_o may_v be_v easy_o conclude_v from_o one_o of_o my_o memorial_n wherein_o i_o find_v that_o no_o more_o than_o two_o ounce_n of_o oil_n of_o vitriol_n be_v pour_v but_o not_o all_o at_o once_o into_o four_o ounce_n only_o of_o distil_a rain-water_n make_v and_o keep_v it_o manifest_o warm_a for_o a_o pretty_a deal_n above_o a_o hour_n and_o during_o no_o small_a part_n of_o that_o time_n keep_v it_o so_o hot_a that_o it_o be_v troublesome_a to_o be_v handle_v exper._n fourteen_o the_o former_a experiment_n bring_v into_o my_o mind_n one_o that_o i_o mention_v without_o teach_v it_o in_o the_o history_n of_o cold_a and_o it_o appear_v very_o surprise_v to_o those_o that_o know_v not_o the_o ground_n of_o it_o for_o have_v sometime_o merry_o propose_v to_o heat_v cold_a liquor_n with_o ice_n the_o undertake_n seem_v extravagant_a if_o not_o impossible_a but_o be_v easy_o perform_v by_o take_v out_o of_o a_o basin_n of_o cold_a water_n wherein_o divers_a fragment_n of_o ice_n be_v swim_v one_o or_o two_o piece_n that_o i_o perceive_v be_v well_o drench_v with_o the_o liquor_n and_o immerse_v they_o sudden_o into_o a_o wide-mouthed_a glass_n wherein_o strong_a oil_n of_o vitriol_n have_v be_v put_v for_o this_o menstruum_fw-la present_o mingle_v with_o the_o water_n that_o adhere_v to_o the_o ice_n produce_v in_o it_o a_o brisk_a heat_n and_o that_o sometime_o with_o a_o manifest_a smoke_n which_o nimble_o dissolve_v the_o contiguous_a part_n of_o ice_n and_o those_o the_o next_o and_o so_o the_o whole_a ice_n be_v speedy_o reduce_v to_o water_n and_o the_o corrosive_n menstruum_fw-la be_v by_o two_o or_o three_o shake_n well_o disperse_v through_o it_o and_o mingle_v with_o it_o the_o whole_a mixture_n will_v grow_v in_o a_o trice_n so_o hot_a that_o sometime_o the_o vial_n that_o contain_v it_o be_v not_o to_o be_v endure_v in_o one_o hand_n exper._n xv._n notwithstanding_o the_o vast_a difference_n betwixt_o common_a water_n and_o high_a rectify_a spirit_n of_o wine_n whereof_o man_n general_o take_v the_o former_a for_o the_o most_o contrary_a body_n to_o fire_n and_o whereof_o the_o chemist_n take_v the_o late_a to_o be_v but_o a_o kind_n of_o liquid_a sulphur_n since_o it_o may_v present_o be_v all_o reduce_v into_o flame_n yet_o as_o i_o expect_v i_o find_v upon_o trial_n that_o oil_n of_o vitriol_n be_v mingle_v with_o pure_a spirit_n of_o wine_n will_v as_o well_o grow_v hot_a as_o with_o common_a water_n nor_o do_v this_o experiment_n always_o require_v great_a quantity_n of_o the_o liquor_n for_o when_o i_o take_v but_o one_o ounce_n of_o strong_a oil_n of_o vitriol_n though_o i_o put_v to_o it_o less_o than_o half_a a_o ounce_n of_o choice_a spirit_n of_o wine_n yet_o those_o two_o be_v light_o shake_v together_o do_v in_o a_o trice_n conceive_v so_o brisk_a a_o heat_n that_o they_o almost_o fill_v the_o vial_n with_o fume_n and_o make_v it_o so_o hot_a thar_z i_o have_v unaware_o like_a to_o have_v burn_v my_o hand_n with_o it_o before_o i_o can_v lay_v it_o aside_o i_o make_v the_o like_a trial_n with_o the_o same_o corrosive_a menstruum_fw-la and_o common_a aqua_fw-la aquavitae_fw-la buy_v at_o a_o strong-water-shop_n by_o the_o mixture_n of_o which_o liquor_n heat_n be_v produce_v in_o the_o vial_n that_o i_o can_v not_o well_o endure_v the_o like_a success_n i_o have_v in_o a_o experiment_n wherein_o oil_n of_o vitriol_n be_v mix_v with_o common_a brandy_n save_v that_o in_o this_o the_o heat_n produce_v seem_v not_o so_o intense_a as_o in_o the_o former_a trial_n which_o itself_o afford_v not_o so_o fierce_a a_o heat_n as_o that_o which_o be_v make_v with_o rectify_a spirit_n of_o wine_n exper._n xvi_o those_o chemist_n who_o conceive_v that_o all_o the_o incalescency_n of_o body_n upon_o their_o be_v mix_v proceed_v from_o their_o antipathy_n or_o hostility_n will_v not_o perhaps_o expect_v that_o the_o part_n of_o the_o same_o body_n either_o numerical_o or_o in_o specie_fw-la as_o the_o school_n phrase_n it_o shall_v and_o that_o without_o manifest_a conflict_n grow_v very_o hot_a together_o and_o yet_o have_v for_o trial_n sake_n put_v two_o ounce_n of_o colcothar_n so_o strong_o calcine_v that_o it_o be_v burn_v almost_o to_o blackness_n into_o a_o retort_n we_o pour_v upon_o it_o two_o ounce_n of_o strong_a oil_n of_o english_a vitriol_n and_o find_v that_o after_o about_o a_o minute_n of_o a_o hour_n they_o begin_v to_o grow_v so_o hot_a that_o i_o can_v not_o endure_v to_o hold_v my_o hand_n to_o the_o bottom_n of_o the_o vessel_n to_o which_o the_o mixture_n give_v a_o heat_n that_o continue_v sensible_a on_o the_o outside_n for_o between_o twenty_o and_o thirty_o minute_n exper._n xvii_o though_o i_o have_v not_o observe_v any_o liquor_n to_o equal_a oil_n of_o vitriol_n in_o the_o number_n of_o liquor_n with_o which_o it_o will_v grow_v hot_a yet_o i_o have_v not_o meet_v with_o any_o liquor_n wherewith_o it_o come_v to_o a_o great_a incalescence_n than_o it_o frequent_o enough_o do_v with_o common_a oil_n of_o turpentine_n for_o when_o we_o cause_v divers_a ounce_n of_o each_o to_o be_v well_o shake_v together_o in_o a_o strong_a vessel_n fasten_v to_o prevent_v mischief_n to_o the_o end_n of_o a_o pole_n or_o staff_n the_o ebullition_n be_v great_a and_o fierce_a enough_o to_o be_v not_o undeserved_o admire_v by_o the_o spectator_n and_o this_o bring_v into_o my_o mind_n a_o pleasant_a adventure_n afford_v by_o these_o liquor_n of_o each_o of_o which_o have_v for_o the_o production_n of_o heat_n and_o other_o purpose_n cause_v a_o good_a bottle_n full_a to_o be_v put_v up_o with_o
emanative_a action_n as_o the_o school_n speak_v that_o the_o sulphur_n communicate_v any_o heat_n to_o my_o hand_n and_o also_o that_o when_o it_o be_v brisk_o move_v it_o do_v impress_v that_o quality_n be_v no_o more_o than_o another_o solid_a body_n though_o incombustible_a as_o common_a glass_n will_v have_v do_v if_o its_o part_n have_v be_v likewise_o put_v into_o a_o agitation_n surpass_v that_o of_o my_o organ_n of_o feeling_n so_o that_o in_o our_o experiment_n sulphur_n itself_o be_v behold_v for_o its_o actual_a heat_n to_o local_a motion_n produce_v by_o external_a agent_n in_o its_o part_n exper._n xxiv_o we_o think_v it_o not_o amiss_o to_o try_v whether_o when_o sal_fw-la ammoniac_a that_o much_o infrigidate_n water_n and_o quicklime_n which_o be_v know_v to_o heat_v it_o be_v by_o the_o fire_n exquisite_o mingle_v the_o mixture_n will_v impart_v to_o the_o liquor_n a_o moderate_a or_o a_o intense_a degree_n of_o either_o of_o those_o quality_n in_o prosecution_n of_o which_o inquiry_n we_o take_v equal_a part_n of_o sal_fw-la ammoniac_a and_o quicklime_n which_o we_o flux_v together_o and_o put_v a_o ounce_n by_o guess_n of_o the_o powder_a mixture_n into_o a_o vial_n with_o a_o convenient_a quantity_n of_o cold_a water_n we_o find_v that_o the_o colliquated_a mass_n do_v in_o about_o a_o minute_n strike_v so_o great_a a_o heat_n through_o the_o glass_n upon_o my_o hand_n that_o i_o be_v glad_a to_o remove_v it_o hasty_o for_o fear_v of_o be_v scorch_v exper._n xxv_o we_o have_v give_v several_a and_o may_v have_v give_v many_o more_o instance_n of_o the_o incalescence_n of_o mixture_n wherein_o both_o the_o ingredient_n be_v liquor_n or_o at_o least_o one_o of_o they_o be_v a_o fluid_a body_n but_o sometime_o heat_n may_v also_o be_v produce_v by_o the_o mixture_n of_o two_o powder_n since_o it_o have_v be_v observe_v in_o the_o preparation_n of_o the_o butter_n or_o oil_n of_o antimony_n that_o if_o a_o sufficient_a quantity_n of_o beat_a sublimate_n be_v very_o well_o mingle_v with_o powder_a antimony_n the_o mixture_n after_o it_o have_v for_o a_o competent_a time_n which_o vary_v much_o according_a to_o circumstance_n as_o the_o weather_n vessel_n place_n etc._n etc._n wherein_o the_o experiment_n be_v make_v stand_v in_o the_o air_n will_v sometime_o grow_v manifest_o hot_a and_o now_o and_o then_o so_o intense_o so_o as_o to_o send_v forth_o copious_a and_o fetid_v fume_n almost_o as_o if_o it_o will_v take_v fire_n there_o be_v another_o experiment_n make_v by_o the_o help_n of_o antimony_n and_o a_o pulverised_a body_n wherein_o the_o mixture_n after_o it_o have_v be_v for_o divers_a hour_n expose_v to_o the_o air_n visible_o afford_v we_o mineral_n fume_n and_o to_o these_o i_o can_v add_v more_o considerable_a and_o perhaps_o scarce_o credible_a instance_n of_o body_n grow_v hot_a without_o liquor_n if_o philanthropy_n do_v not_o forbid_v i_o but_o to_o return_v to_o our_o butter_n of_o antimony_n it_o seem_v not_o unfit_a to_o be_v inquire_v whether_o there_o do_v not_o unobserved_o intervene_v a_o aqueous_a moisture_n which_o capable_a of_o relax_v the_o salt_n and_o set_v they_o a_o work_n i_o therefore_o suspect_v may_v be_v attract_v as_o man_n common_o speak_v from_o the_o air_n since_o the_o mixture_n of_o the_o antimony_n and_o the_o sublimate_n be_v prescribe_v to_o be_v place_v in_o cellar_n and_o in_o such_o we_o find_v that_o sublimate_n or_o at_o least_o the_o saline_a part_n of_o it_o be_v resolve_v per_fw-la deliquium_fw-la as_o they_o call_v it_o which_o be_v nothing_o but_o a_o solution_n make_v by_o the_o watery_a steam_n wander_v in_o the_o air._n exper._n xxvi_o i_o have_v former_o deliver_v some_o instance_n of_o the_o incalescence_n produce_v by_o water_n in_o body_n that_o be_v ready_o dissolve_v in_o it_o as_o salt_n of_o tartar_n and_o quicklime_n but_o one_o will_v not_o light_o expect_v that_o mere_a water_n shall_v produce_v a_o incalescence_n in_o solid_a body_n that_o be_v general_o grant_v to_o be_v insoluble_a in_o it_o and_o be_v not_o wont_a to_o be_v at_o least_o without_o length_n of_o time_n visible_o wrought_v on_o by_o it_o and_o yet_o trial_n have_v assure_v i_o that_o a_o notable_a incalescence_n may_v be_v produce_v by_o common_a water_n in_o flower_n or_o fine_a powder_n of_o sulphur_n and_o file_n of_o steel_n or_o iron_n for_o when_o in_o summer_n time_n i_o cause_v to_o be_v mingle_v a_o good_a quantity_n as_o half_o a_o pound_n or_o rather_o a_o pound_n of_o each_o of_o the_o ingredient_n and_o cause_v they_o to_o be_v thorough_o drench_v with_o common_a water_n in_o a_o convenient_a quantity_n whereof_o they_o be_v very_o well_o stir_v up_o and_o down_o and_o careful_o mingle_v the_o mixture_n will_v in_o a_o short_a time_n perhaps_o less_o than_o a_o hour_n grow_v so_o hot_a that_o the_o vessel_n that_o contain_v it_o can_v not_o be_v suffer_v in_o one_o hand_n and_o the_o heat_n be_v manifest_v to_o other_o sense_n than_o the_o touch_n by_o the_o strong_a sulphureous_a stink_n that_o invade_v the_o nose_n and_o the_o thick_a smoke_n that_o ascend_v out_o of_o the_o mixture_n especial_o when_o it_o be_v stir_v with_o a_o stick_n or_o spittle_n whether_o the_o success_n will_v be_v the_o same_o at_o all_o time_n of_o the_o year_n i_o do_v not_o know_v and_o somewhat_o doubt_n since_o i_o remember_v not_o that_o i_o have_v occasion_n to_o try_v it_o in_o other_o season_n than_o in_o summer_n or_o in_o autumn_n exper._n xxvii_o in_o the_o instance_n that_o chemistry_n be_v wont_a to_o afford_v we_o of_o the_o heat_v produce_v by_o the_o action_n of_o menstruum_n upon_o other_o body_n there_o intervene_v some_o liquor_n proper_o so_o call_v that_o wet_v the_o hand_n of_o those_o that_o touch_v it_o and_o there_o be_v divers_a of_o the_o more_o judicious_a chemist_n that_o join_v with_o the_o generality_n of_o the_o naturalist_n in_o deny_v that_o quicksilver_n which_o be_v indeed_o a_o fluid_a body_n but_o not_o a_o moist_a and_o wet_v one_o in_o reference_n to_o we_o will_v produce_v heat_n by_o its_o immediate_a action_n on_o any_o other_o body_n and_o particular_o on_o gold_n but_o though_o i_o be_v long_o inclinable_a to_o their_o opinion_n yet_o i_o can_v now_o be_v of_o it_o several_a trial_n have_v assure_v i_o that_o a_o mercury_n whether_o afford_v by_o metal_n and_o mineral_n or_o impregnate_v by_o they_o may_v by_o its_o preparation_n be_v enable_v to_o insinuate_v itself_o nimble_o into_o the_o body_n of_o gold_n whether_o calcine_v or_o crude_a and_o become_v manifest_o incalescent_n with_o it_o in_o less_o than_o two_o or_o three_o minute_n of_o a_o hour_n exper._n xxviii_o since_o we_o know_v that_o some_o natural_a salt_n and_o especial_o saltpetre_n can_v produce_v a_o coldness_n in_o the_o water_n they_o be_v dissolve_v in_o i_o think_v it_o may_v not_o be_v impertient_fw-la to_o our_o enquiry_n into_o heat_n and_o cold_a and_o may_v perhaps_o also_o contribute_v 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their_o sake_n who_o have_v a_o mind_n to_o repeat_v the_o experiment_n there_o deliver_v that_o so_o they_o may_v know_v the_o quantity_n employ_v in_o it_o with_o two_o part_n of_o this_o crocus_n we_o ground_n very_o well_o three_o part_n of_o sal_fw-la ammoniac_a and_o have_v sublime_v they_o in_o a_o strong_a fire_n we_o take_v off_o the_o high_a colour_a sublimat_n and_o put_v in_o either_o a_o equal_a weight_n or_o a_o weight_n exceed_v it_o by_o half_a to_o the_o caput_fw-la mortuum_n we_o find_v after_o the_o second_o sublimation_n which_o be_v also_o high_o colour_v that_o of_o a_o ounce_n of_o crocus_n we_o have_v raise_v six_o dram_n that_o be_v three_o quarter_n of_o the_o whole_a weight_n finis_fw-la experimental_a note_n of_o the_o mechanical_a origine_fw-la or_o production_n of_o fixtness_n london_n print_v by_o e._n flesher_n for_o r._n davis_n bookseller_n in_o oxford_n 1675._o of_o the_o mechanical_a origine_fw-la or_o production_n of_o fixtness_n chap._n i._n 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may_v afterward_o be_v easy_o take_v up_o in_o liquor_n that_o be_v not_o acid_a or_o even_o by_o water_n itself_o exper._n vii_o the_o tract_n about_o salt-peter_n that_o give_v occasion_n to_o these_o annotation_n may_v furnish_v we_o with_o a_o eminent_a instance_n of_o the_o production_n of_o solvent_n for_o though_o pure_a saltpetre_n itself_o when_o dissolve_v in_o water_n be_v not_o observe_v to_o be_v a_o menstruum_fw-la for_o the_o solution_n of_o the_o metal_n hereafter_o to_o be_v name_v or_o so_o much_o as_o of_o coral_n itself_o yet_o when_o by_o a_o convenient_a distillation_n its_o part_n be_v split_v if_o i_o may_v so_o speak_v and_o by_o attrition_n or_o other_o mechanical_a way_n of_o work_v on_o they_o reduce_v to_o the_o shape_n of_o acid_n and_o alcalizate_a salt_n it_o than_o afford_v two_o sort_n of_o menstruum_n of_o very_o differ_v nature_n which_o betwixt_o they_o dissolve_v or_o corrode_v a_o great_a number_n and_o variety_n of_o body_n as_o the_o spirit_n of_o nitre_n without_o addition_n be_v a_o solvent_a for_o most_o metal_n as_o silver_n mercury_n copper_n lead_v etc._n etc._n and_o also_o divers_a mineral_n body_n as-tin-glass_n spelter_n lapis_n calaminaris_n etc._n etc._n and_o the_o fix_a salt_n of_o nitre_n operate_v upon_o sulphureous_a mineral_n as_o common_a sulphur_n antimony_n and_o divers_a other_o body_n of_o which_o i_o elsewhere_o make_v mention_n exper._n viii_o by_o the_o former_a trial_n it_o have_v appear_v that_o the_o increase_n of_o motion_n in_o the_o more_o penetrate_a corpuscle_n of_o a_o liquor_n contribute_v much_o to_o its_o solutive_a power_n and_o i_o shall_v now_o add_v that_o the_o shape_n and_o size_n which_o be_v mechanical_a affection_n and_o sometime_o also_o the_o solidity_n of_o the_o same_o corpuscle_n do_v eminent_o concur_v to_o qualify_v a_o liquor_n to_o dissolve_v this_o or_o that_o particular_a body_n of_o this_o even_o some_o of_o the_o more_o familiar_a practice_n of_o chemist_n may_v supply_v we_o with_o instance_n for_o there_o be_v no_o account_n so_o probable_a as_o may_v be_v give_v upon_o this_o supposition_n why_o aqua_fw-la fortis_fw-la which_o will_v dissolve_v silver_n without_o meddle_v with_o gold_n shall_v by_o the_o addition_n of_o a_o four_o part_n of_o its_o weight_n of_o sal_fw-la ammoniac_a be_v turn_v into_o aqua_fw-la regius_fw-la which_o without_o meddle_v with_o silver_n will_v dissolve_v gold_n but_o there_o be_v no_o necessity_n of_o have_v recourse_n to_o so_o gross_a and_o compound_v a_o body_n as_o sal_fw-la ammoniac_a to_o enable_v aqua_fw-la fortis_fw-la to_o dissolve_v gold_n for_o the_o spirit_n of_o common_a salt_n alone_o be_v mingle_v in_o a_o due_a proportion_n will_v suffice_v for_o that_o purpose_n which_o by_o the_o way_n show_v that_o the_o volatile_a salt_n of_o urine_n and_o soot_n that_o concur_v to_o the_o make_v up_o of_o sal_fw-la ammoniac_a be_v not_o necessary_a to_o the_o dissolution_n of_o gold_n for_o which_o a_o solvent_a may_v be_v make_v with_o aqua_fw-la fortis_fw-la and_o crude_a sea-salt_n i_o may_v add_v that_o the_o mechanical_a affection_n of_o a_o menstruum_fw-la may_v have_v such_o a_o interest_n in_o its_o dissolutive_a power_n that_o even_o mineral_n or_o metalline_a corpuscle_n may_v become_v useful_a ingredient_n of_o it_o though_o perhaps_o it_o be_v a_o distil_a liquor_n as_o may_v be_v illustrate_v by_o the_o operation_n of_o some_o compound_a solvent_n such_o as_o be_v the_o oil_n of_o antimony_n make_v by_o repeat_v rectification_n of_o what_o chemist_n call_v its_o butter_n which_o whatever_o some_o say_v to_o the_o contrary_a do_v much_o abound_v in_o antimonial_a substance_n exper._n ix_o but_o i_o shall_v return_v to_o our_o aqua_fw-la regius_fw-la because_o the_o mention_n i_o have_v occasion_n to_o make_v of_o that_o solvent_a bring_v into_o my_o mind_n what_o i_o devise_v to_o make_v it_o probable_a that_o a_o small_a change_n than_o one_o will_v light_o imagine_v of_o the_o bulk_n shape_n or_o solidity_n of_o the_o corpuscle_n of_o a_o menstruum_fw-la may_v make_v it_o fit_a to_o dissolve_v a_o body_n it_o will_v not_o work_v on_o before_o and_o this_o i_o the_o rather_o attempt_v because_o the_o wary_a sort_n of_o chemist_n themselves_o be_v very_o shy_a of_o the_o inward_a use_n or_o preparation_n make_v of_o gold_n by_o the_o help_n of_o aqua_fw-la fortis_fw-la because_o of_o the_o odious_a stink_n they_o find_v and_o the_o venenosity_n they_o suspect_v in_o that_o corrosive_n menstruum_fw-la whereas_o spirit_n of_o salt_n we_o look_v upon_o as_o a_o much_o more_o innocent_a liquor_n whereof_o if_o it_o be_v but_o dilute_v with_o fair_a water_n or_o any_o ordinary_a drink_n a_o good_a dose_n may_v be_v safe_o give_v inward_o though_o it_o have_v not_o wrought_v upon_o gold_n or_o any_o other_o body_n to_o take_v off_o its_o acrimony_n but_o whether_o or_o
strange_a thing_n that_o be_v affirm_v of_o the_o operation_n of_o the_o alkahe_a we_o may_v in_o favour_n of_o our_o doctrine_n urge_v they_o with_o what_o be_v deliver_v by_o helmont_n where_o he_o assert_n that_o all_o solid_a body_n as_o stone_n mineral_n and_o metal_n themselves_o by_o have_v this_o liquor_n due_o abstract_v or_o distil_v off_o from_o they_o may_v be_v change_v into_o salt_n equiponderant_a to_o the_o respective_a body_n whereon_o the_o menstruum_fw-la be_v put_v so_o that_o suppose_v the_o alkahe_a to_o be_v total_o abstract_v as_o it_o seem_v very_o probable_a to_o be_v since_o the_o weight_n of_o the_o body_n whence_o it_o be_v draw_v off_o be_v not_o alter_v what_o other_o change_n than_o of_o texture_n can_v be_v reasonable_o imagine_v to_o have_v be_v make_v in_o the_o transmute_v body_n and_o yet_o divers_a of_o they_o as_o flint_n ruby_n sapphire_n gold_n silver_n etc._n etc._n that_o be_v insoluble_a before_o some_o of_o they_o in_o any_o know_a menstruum_n and_o other_o in_o any_o but_o corrosive_a liquor_n come_v to_o be_v capable_a of_o be_v dissolve_v in_o common_a water_n exper._n viii_o it_o be_v a_o remarkable_a phaenomenon_n that_o suit_v very_o well_o with_o our_o opinion_n about_o the_o interest_n of_o mechanical_a principle_n in_o the_o corrosive_a power_n of_o menstruum_n and_o the_o corrosibility_n of_o body_n that_o we_o produce_v by_o the_o follow_a experiment_n this_o we_o purposely_o make_v to_o show_v after_o how_o differ_v manner_n the_o same_o body_n may_v be_v dissolve_v by_o two_o menstruum_n who_o minute_n part_n be_v very_o differ_o constitute_v and_o agitate_a for_o whereas_o it_o be_v know_v that_o if_o we_o put_v large_a grain_n of_o sea-salt_n into_o common_a water_n they_o will_v be_v dissolve_v therein_o calm_o and_o silent_o without_o any_o appearance_n of_o conflict_n if_o we_o put_v such_o grain_n of_o salt_n into_o good_a oil_n of_o vitriol_n that_o liquor_n will_v fall_v furious_o upon_o they_o and_o produce_v for_o a_o good_a while_o a_o hiss_a noise_n with_o fume_n and_o a_o great_a store_n of_o bubble_n as_o if_o a_o potent_a menstruum_fw-la be_v corrode_a some_o stubborn_a metal_n or_o mineral_n and_o this_o experiment_n i_o the_o rather_o mention_v because_o it_o may_v be_v of_o use_n to_o we_o on_o divers_a other_o occasion_n for_o else_o it_o be_v not_o the_o only_a though_o it_o be_v the_o remarkabl_a that_o i_o make_v to_o the_o same_o purpose_n exper._n ix_o for_o whereas_o aqua_fw-la fortis_fw-la or_o aqua_fw-la regis_fw-la be_v pour_v upon_o file_n of_o copper_n will_v work_v upon_o they_o with_o much_o noise_n and_o ebullition_n i_o have_v try_v that_o good_a spirit_n of_o sal_fw-la ammoniac_a or_o urine_n be_v put_v upon_o the_o like_a file_n and_o leave_v there_o without_o stop_v the_o glass_n will_v quick_o begin_v to_o work_v on_o they_o and_o quiet_o dissolve_v they_o almost_o as_o water_n dissolve_v sugar_n to_o which_o may_v be_v add_v that_o even_o with_o oil_n of_o turpentine_n i_o have_v though_o but_o slow_o dissolve_v crude_a copper_n and_o the_o experiment_n seem_v to_o favour_v our_o conjecture_n the_o more_o because_o have_v try_v it_o several_a time_n it_o appear_v that_o common_a unrectify_v oil_n will_v perform_v the_o solution_n much_o quick_a than_o that_o which_o be_v purify_v and_o subtilise_v by_o rectification_n which_o though_o more_o subtle_a and_o penetrant_fw-la yet_o be_v it_o seem_v on_o that_o account_n less_o fit_a to_o dissolve_v the_o metal_n than_o the_o grosser_n oil_n who_o particle_n may_v be_v more_o solid_a or_o more_o advantageous_o shape_v or_o on_o some_o other_o mechanical_a account_n better_o qualify_v for_o the_o purpose_n exper._n x._o take_v good_a silver_n and_o have_v dissolve_v it_o in_o aqua_fw-la fortis_fw-la precipitate_v it_o with_o a_o sufficient_a quantity_n of_o good_a spirit_n of_o salt_n then_o have_v wash_v the_o calx_fw-la which_o will_v be_v very_o white_a with_o common_a water_n and_o dry_v it_o well_o melt_v it_o with_o a_o moderate_a fire_n into_o a_o fusible_a mass_n which_o will_v be_v very_o much_o of_o the_o nature_n of_o what_o chemist_n call_v cornu_fw-la lunae_fw-la and_o which_o they_o make_v by_o precipitate_v dissolve_v silver_n with_o a_o bare_a solution_n of_o common_a salt_n make_v in_o common_a water_n and_o whereas_o both_o spirit_n of_o salt_n and_o silver_n dissolve_v in_o aqua_fw-la fortis_fw-la will_n each_o of_o they_o apart_o ready_o dissolve_v in_o simple_a water_n our_o luna_n cornea_n not_o only_o will_v not_o do_v so_o but_o be_v so_o indispose_v to_o dissolution_n that_o i_o remember_v i_o have_v keep_v it_o in_o digestion_n some_o in_o aqua_fw-la fortis_fw-la and_o some_o in_o aqua_fw-la regius_fw-la and_o that_o for_o a_o good_a while_n and_o in_o no_o very_a faint_a degree_n of_o heat_n without_o be_v able_a to_o dissolve_v it_o like_o a_o metal_n the_o menstruum_n have_v indeed_o tinge_v themselves_o upon_o it_o but_o leave_v the_o composition_n undissolve_v at_o the_o bottom_n with_o this_o instance_n of_o which_o sort_n more_o may_v be_v afford_v by_o chemical_a precipitation_n i_o shall_v conclude_v what_o i_o design_v to_o offer_v at_o present_a about_o the_o corrosibility_n of_o body_n as_o it_o may_v be_v consider_v in_o a_o more_o general_a way_n for_o as_o to_o the_o disposition_n that_o particular_a body_n have_v of_o be_v dissolve_v in_o or_o of_o resi_v determinate_a liquor_n it_o be_v much_o easy_a for_o i_o to_o enlarge_v upon_o that_o subject_a than_o it_o be_v to_o provide_v the_o instance_n above_o recite_v and_o these_o be_v not_o so_o few_o but_o that_o it_o be_v hope_v they_o may_v suffice_v to_o make_v it_o probable_a that_o in_o the_o relation_n betwixt_o a_o solvent_a and_o the_o body_n it_o be_v to_o work_v upon_o that_o which_o depend_v upon_o the_o mechanical_a affection_n of_o one_o or_o both_o be_v much_o to_o be_v consider_v and_o have_v a_o great_a interest_n in_o the_o operation_n of_o one_o of_o the_o body_n upon_o the_o other_o finis_fw-la of_o the_o mechanical_a cause_n of_o chemical_a precipitation_n by_o the_o honourable_a robert_n boyle_n esq_n fellow_n of_o the_o r._n society_n london_n print_v by_o e._n flesher_n for_o r._n davis_n bookseller_n in_o oxford_n 1675._o advertisement_n though_o i_o shall_v not_o deny_v that_o in_o grammatical_a strictness_n precipitation_n shall_v be_v reckon_v among_o chemical_a operation_n not_o quality_n yet_o i_o do_v not_o much_o scruple_n to_o insert_v the_o follow_a discourse_n among_o the_o note_n about_o particular_a quality_n because_o many_o if_o not_o most_o of_o the_o phaenomena_n mention_v in_o the_o ensue_a essay_n may_v be_v consider_v as_o depend_v some_o of_o they_o upon_o a_o power_n that_o certain_a body_n have_v to_o cause_n precipitation_n and_o some_o upon_o such_o a_o disposition_n to_o be_v strike_v down_o by_o other_o as_o may_v if_o man_n please_v be_v call_v precipitability_n and_o so_o these_o differ_a affection_n may_v with_o at_o least_o tolerable_a congruity_n be_v refer_v to_o those_o that_o we_o have_v elsewhere_o style_v chemical_a quality_n but_o though_o i_o hope_v i_o may_v in_o these_o few_o line_n have_v say_v enough_o concern_v the_o name_n give_v to_o these_o attribute_n yet_o perhaps_o it_o will_v be_v find_v in_o time_n that_o the_o thing_n themselves_o may_v deserve_v a_o large_a discourse_n than_o my_o little_a leisure_n will_v allow_v they_o for_o that_o be_v not_o a_o causeless_a intimation_n of_o the_o importance_n of_o the_o subject_n wherewith_o i_o conclude_v the_o follow_a tract_n since_o beside_o that_o many_o more_o instance_n may_v have_v be_v particular_o refer_v to_o the_o head_n treat_v of_o in_o the_o ensue_a essay_n there_o be_v improper_a kind_n of_o precipitation_n beside_o those_o mention_v in_o the_o former_a part_n of_o the_o discourse_n to_o which_o one_o may_v not_o incongruous_o refer_v divers_a of_o the_o phaenomena_n of_o nature_n as_o well_o in_o the_o great_a as_o in_o the_o lesser_a world_n whereof_o either_o no_o cause_n at_o all_o or_o but_o improper_a one_o be_v wont_n to_o be_v give_v and_o beside_o the_o simple_a spirit_n and_o salt_n usual_o employ_v by_o chemist_n there_o be_v many_o compound_v and_o decompound_v body_n not_o only_o factitious_a but_o natural_a and_o some_o such_o as_o one_o will_v scarce_o suspect_v that_o may_v in_o congruous_a subject_n produce_v such_o precipitation_n as_o i_o speak_v of_o and_o the_o phaenomena_n and_o consequent_n of_o such_o operation_n may_v in_o divers_a case_n prove_v conducive_a both_o to_o the_o discovery_n of_o physical_a cause_n and_o the_o production_n of_o useful_a effect_n though_o the_o particularise_v of_o such_o phaenomena_n do_v rather_o belong_v to_o a_o history_n of_o precipitation_n than_o to_o such_o a_o discourse_n as_o that_o which_o follow_v wherein_o i_o propose_v not_o so_o much_o to_o deliver_v the_o latent_fw-la mystery_n