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
minute_n part_n in_o the_o cold_a which_o be_v a_o effect_n that_o chemist_n be_v not_o wont_a to_o expect_v from_o spirit_n of_o salt_n nay_o which_o be_v more_o one_o acid_n will_v precipitate_v what_o another_o have_v dissolve_v and_o contrary_o as_o spirit_n of_o salt_n will_v precipitate_v silver_n out_o of_o spirit_n of_o nitre_n and_o i_o find_v oil_n of_o vitriol_n to_o precipitate_v body_n of_o divers_a kind_n mineral_n and_o other_o out_o of_o some_o acid_a menstruum_n particular_o spirit_n of_o vinegar_n to_o this_o may_v be_v add_v the_o property_n peculiar_a to_o some_o particular_a acid_n as_o that_o spirit_n of_o nitre_n or_o aqua_fw-la fortis_fw-la will_v dissolve_v camphire_n into_o a_o oil_n and_o coagulate_v common_a oil_n into_o a_o consistent_a and_o brittle_a substance_n like_o tallow_n and_o though_o it_o will_v both_o corrode_v silver_n copper_n lead_v and_o mercury_n and_o keep_v they_o dissolve_v it_o will_v quick_o let_v fall_v almost_o the_o whole_a body_n of_o tin_n very_o soon_o after_o it_o have_v corrode_v as_o much_o as_o it_o can_v of_o it_o by_o all_o which_o and_o some_o other_o like_o instance_n i_o be_o induce_v to_o question_v whether_o the_o acidum_fw-la and_o alkali_fw-la we_o be_v speak_v of_o have_v the_o simplicity_n that_o philosophy_n require_v in_o principle_n and_o shall_v be_v keep_v from_o wonder_v if_o other_o shall_v think_v it_o as_o free_v for_o they_o to_o constitute_v other_o principle_n as_o it_o be_v for_o the_o learned_a man_n i_o reason_n with_o to_o pitch_v upon_o acidum_fw-la and_o alkali_fw-la and_o some_o perhaps_o will_v be_v bold_a to_o say_v that_o since_o the_o former_a of_o those_o principle_n comprehend_v such_o a_o number_n of_o body_n that_o be_v many_o of_o they_o very_o differ_v and_o some_o of_o they_o direct_o contrary_a in_o their_o operation_n it_o seem_v a_o slight_a and_o not_o philosophical_a account_n of_o their_o nature_n to_o define_v a_o acid_n by_o its_o hostility_n to_o a_o alcali_n which_o they_o will_v say_v be_v almost_o as_o if_o one_o shall_v define_v a_o man_n by_o say_v that_o he_o be_v a_o animal_n that_o be_v at_o enmity_n with_o the_o serpent_n or_o a_o lion_n that_o he_o be_v a_o fourfooted_a beast_n that_o fly_v from_o a_o crow_v cock._n chap._n iu._n but_o although_o one_o of_o the_o chief_a condition_n that_o philosopher_n may_v just_o require_v in_o principle_n be_v that_o be_v to_o explain_v other_o thing_n they_o shall_v be_v very_o clear_a themselves_o yet_o i_o do_v not_o much_o wonder_n that_o the_o definition_n give_v we_o of_o acidum_fw-la and_o alcali_n shall_v be_v but_o unaccurate_a and_o superficial_a since_o i_o find_v not_o that_o they_o have_v themselves_o any_o clear_a and_o determinate_a notion_n or_o sure_a mark_n whereby_o to_o know_v they_o distinct_o without_o which_o chemist_n will_v scarce_o be_v able_a to_o form_v clear_a and_o settle_a notion_n of_o they_o for_o to_o infer_v as_o be_v usual_a that_o because_o a_o body_n dissolve_v another_o which_o be_v dissoluble_a by_o this_o or_o that_o know_a acid_n the_o solvent_a must_v also_o be_v acid_a or_o to_o conclude_v that_o if_o a_o body_n precipitate_v a_o dissolve_a metal_n out_o of_o a_o confess_o acid_a menstruum_fw-la the_o precipitant_n must_v be_v a_o alcali_n to_o argue_v thus_o i_o say_v it_o be_v unsecure_a since_o not_o to_o repeat_v what_o i_o say_v late_o of_o copper_n i_o find_v that_o file_n of_o spelter_n will_v be_v dissolve_v as_o well_o by_o some_o alcaly_n as_o spirit_n of_o sal_fw-la ammoniac_a as_o by_o acid_n and_o body_n may_v be_v precipitate_v out_o of_o acid_a menstruum_n both_o by_o other_o acid_n and_o by_o liquor_n where_o there_o appear_v not_o the_o least_o alcali_n as_o i_o have_v find_v that_o a_o solution_n of_o tinglass_n make_v in_o aqua_fw-la fortis_fw-la will_v be_v precipitate_v both_o by_o spirit_n of_o salt_n and_o by_o common_a or_o rain_n water_n and_o as_o for_o the_o other_o grand_a way_n that_o chemist_n employ_v to_o distinguish_v acid_n and_o alcaly_n namely_o by_o the_o heat_n commotion_n and_o bubble_n that_o be_v excite_v upon_o their_o be_v put_v together_o that_o may_v be_v no_o such_o certain_a sign_n as_o they_o presume_v they_o have_v indeed_o a_o dependence_n upon_o particular_a contexture_n and_o other_o mechanical_a affection_n that_o chemist_n be_v not_o wont_a to_o take_v any_o notice_n of_o for_o almost_o any_o thing_n that_o be_v fit_v various_o and_o vehement_o to_o agitate_v the_o minute_n part_n of_o a_o body_n will_v produce_v heat_n in_o it_o and_o so_o though_o water_n be_v neither_o a_o acid_n nor_o a_o alcalizate_a liquor_n yet_o it_o will_v quick_o grow_v very_o hot_a not_o only_o with_o the_o high_o acid_a oil_n of_o vitriol_n but_o as_o i_o have_v more_o than_o once_o purposely_o try_v and_o find_v with_o the_o fiery_a alcalizat_n salt_n of_o tartar_n and_o it_o be_v to_o be_v note_v that_o neither_o in_o the_o one_o nor_o the_o other_o of_o these_o incalescent_n mixture_n there_o be_v produce_v any_o such_o visible_a or_o audible_a conflict_n as_o according_a to_o the_o doctrine_n of_o the_o chemist_n i_o reason_n with_o one_o will_v expect_v and_o as_o for_o the_o production_n of_o bubble_n especial_o if_o accompany_v with_o a_o hiss_a noise_n neither_o be_v that_o such_o a_o certain_a sign_n as_o chemist_n imagine_v for_o the_o production_n of_o bubble_n be_v not_o a_o necessary_a effect_n or_o concomitant_a of_o heat_n excite_v by_o conflict_n but_o depend_v very_o much_o upon_o the_o peculiar_a disposition_n of_o body_n put_v together_o to_o extricate_v produce_v or_o intercept_v particle_n of_o air_n or_o steam_n for_o the_o time_n equivalent_a to_o they_o and_o therefore_o as_o oil_n of_o vitriol_n mix_v in_o a_o due_a proportion_n with_o fair_a water_n may_v be_v bring_v to_o make_v the_o water_n too_o hot_a to_o be_v hold_v in_o one_o hand_n without_o exciting_a bubble_n so_o i_o have_v find_v by_o trial_n purposely_o make_v that_o alcalizat_n spirit_n of_o urine_n draw_v from_o some_o kind_n of_o quicklime_n be_v mix_v with_o oil_n of_o vitriol_n moderate_o strong_a will_v produce_v a_o intense_a heat_n while_o it_o produce_v either_o no_o manifest_a bubble_n at_o all_o or_o scarce_o any_o though_o the_o urinous_a spirit_n be_v strong_a and_o in_o other_o trial_n operate_v like_o a_o alcali_n and_o although_o also_o with_o spirit_n of_o urinal_n make_v per_fw-la se_fw-la the_o common_a way_n the_o oil_n of_o vitriol_n will_v produce_v a_o great_a hiss_a and_o a_o multitude_n of_o conspicuous_a bubble_n on_o the_o other_o side_n i_o have_v sometime_o though_o not_o so_o constant_o find_v that_o some_o acid_n spirit_n especial_o that_o of_o verdigrease_n make_v per_fw-la se_fw-la will_v when_o pour_v upon_o salt_n of_o tartar_n make_v a_o conflict_n with_o it_o and_o produce_v a_o copious_a froth_n though_o we_o observe_v it_o not_o to_o be_v accompany_v with_o any_o manifest_a heat_n and_o i_o elsewhere_o mention_v two_o body_n upon_o who_o put_v together_o numerous_a bubble_n will_v for_o a_o long_a time_n and_o not_o without_o noise_n be_v generate_v and_o succeed_v one_o another_o though_o i_o can_v perceive_v no_o heat_n at_o all_o to_o accompany_v this_o tumult_n as_o for_o the_o taste_n which_o by_o many_o be_v make_v a_o great_a touchstone_n whereby_o to_o know_v acid_n and_o alcaly_n i_o consider_v that_o there_o be_v a_o multitude_n of_o mix_a body_n wherein_o we_o can_v so_o little_o discern_v by_o the_o taste_n which_o of_o the_o principle_n be_v predominant_a that_o this_o sense_n will_v not_o oblige_v one_o to_o suspect_v much_o less_o to_o conclude_v there_o be_v one_o grain_n of_o either_o of_o they_o to_o be_v find_v there_o such_o body_n be_v diamond_n and_o ruby_n and_o most_o gem_n beside_o many_o ignoble_a stone_n and_o gold_n and_o silver_n and_o mercury_n and_o i_o know_v not_o how_o many_o other_o body_n on_o the_o other_o side_n there_o be_v body_n that_o abound_v with_o acid_n or_o alcalizat_n salt_n which_o either_o have_v no_o taste_n or_o a_o quite_o differ_v one_o from_o that_o of_o the_o chemical_a principle_n as_o though_o venice-glass_n be_v in_o great_a part_n compose_v of_o a_o fix_a alcali_n yet_o to_o the_o tongue_n it_o be_v insipid_a and_o crystall_n of_o lune_fw-fr and_o of_o lead_v make_v with_o aqua_fw-la fortis_fw-la and_o contain_v great_a store_n of_o the_o acid_n particle_n of_o the_o menstruum_fw-la have_v nothing_o of_o acidity_n in_o the_o mouth_n the_o latter_a have_v a_o saccharine_n sweetness_n and_o the_o former_a a_o extreme_a bitterness_n and_o even_o in_o vegetable_a substance_n that_o have_v a_o manifest_a taste_n it_o be_v not_o so_o easy_a to_o know_v by_o that_o whether_o it_o be_v the_o acid_n or_o the_o alcalizat_n principle_n that_o be_v predominant_a in_o they_o as_o in_o the_o essential_a oil_n of_o spice_n
as_o will_v not_o be_v only_o very_a sensible_a to_o his_o hand_n that_o hold_v the_o glass_n whilst_o the_o dissolution_n be_v make_v but_o will_v very_o manifest_o discover_v itself_o by_o its_o operation_n upon_o a_o thermoscope_n nay_o i_o have_v more_o than_o once_o by_o wet_v the_o outside_n of_o the_o glass_n where_o the_o dissolution_n be_v make_v and_o nimble_o stir_v the_o mixture_n turn_v that_o external_o adhere_v water_n into_o real_a ice_n that_o be_v scrape_v off_o with_o a_o knife_n in_o less_o than_o a_o minute_n of_o a_o hour_n and_o this_o thus_o generate_v cold_a continue_v considerable_o intense_a whilst_o the_o action_n of_o dissolution_n last_v but_o afterward_o by_o degree_n abate_v and_o within_o a_o very_a few_o hour_n cease_v the_o particular_a phaenomena_n i_o have_v note_v in_o the_o experiment_n and_o the_o practical_a use_n that_o may_v be_v make_v of_o it_o i_o reserve_v for_o another_o place_n transact_v the_o knowledge_n of_o they_o be_v not_o necessary_a in_o this_o where_o what_o i_o have_v already_o relate_v may_v suffice_v for_o my_o present_a argument_n and_o to_o show_v that_o not_o only_o a_o far_a more_z intense_a degree_n of_o cold_a may_v emerge_n in_o this_o mixture_n than_o be_v to_o be_v find_v in_o either_o of_o the_o ingredient_n before_o they_o be_v mingle_v but_o a_o considerable_a coldness_n may_v be_v begin_v to_o be_v produce_v between_o body_n that_o be_v neither_o of_o they_o actual_o cold_a before_o they_o be_v put_v together_o i_o will_v subjoin_v a_o transcript_n of_o what_o i_o find_v to_o this_o purpose_n among_o my_o adversaria_fw-la exper._n ii_o i_o remember_v that_o once_o i_o have_v a_o mind_n to_o try_v whether_o the_o coldness_n produce_v upon_o the_o solution_n of_o beat_a sal_fw-la ammoniac_a in_o water_n may_v not_o be_v more_o probable_o refer_v to_o some_o change_n of_o texture_n or_o motion_n result_v from_o the_o action_n of_o the_o liquor_n upon_o the_o salt_n than_o to_o any_o infrigidation_n of_o the_o water_n make_v by_o the_o sudden_a dispersion_n of_o so_o many_o saline_n grain_n of_o powder_n which_o by_o reason_n of_o their_o solidity_n may_v be_v suspect_v to_o be_v actual_o more_o cold_a than_o the_o water_n they_o be_v put_v into_o i_o therefore_o provide_v a_o glass_n full_a of_o that_o liquor_n and_o have_v bring_v it_o to_o such_o a_o temper_n that_o its_o warmth_n make_v the_o spirit_n of_o wine_n in_o the_o seal_a weatherglass_n manifest_o though_o not_o nimble_o ascend_v i_o take_v out_o the_o thermoscope_n and_o lay_v it_o in_o powder_a sal_fw-la ammoniac_a warm_v beforehand_o so_o that_o the_o tinct_a liquor_n be_v make_v to_o ascend_v much_o nimbly_o by_o the_o salt_n than_o just_a before_o by_o the_o water_n and_o have_v present_o remove_v the_o instrument_n into_o that_o liquor_n again_o and_o pour_v the_o somewhat_o warm_a sal_fw-la ammoniac_a into_o the_o same_o i_o find_v as_o i_o imagine_v that_o within_o a_o space_n of_o time_n which_o i_o guess_v to_o be_v about_o half_a a_o minute_n or_o less_o the_o spirit_n of_o wine_n begin_v hasty_o to_o subside_n and_o within_o a_o few_o minute_n fall_v above_o a_o whole_a division_n and_o a_o quarter_n below_o the_o mark_n at_o which_o it_o stand_v in_o the_o water_n before_o that_o liquor_n or_o the_o salt_n be_v warm_v nor_o do_v the_o spirit_n in_o a_o great_a while_n reascend_v to_o the_o height_n which_o it_o have_v when_o the_o water_n be_v cold_a the_o same_o experiment_n be_v at_o another_o time_n reiterated_a be_v try_v with_o the_o like_a success_n which_o second_o may_v therefore_o serve_v for_o a_o confirmation_n of_o the_o first_o exper._n iii_o have_v a_o mind_n likewise_o to_o show_v some_o ingenious_a man_n how_o much_o the_o production_n of_o heat_n and_o cold_a depend_v upon_o texture_n and_o other_o mechanical_a affection_n i_o think_v fit_a to_o make_v again_o a_o shall_v ammoniac_a by_o a_o way_n i_o former_o publish_v that_o i_o may_v be_v sure_a 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into_o a_o wide_a mouth_a glass_n that_o be_v not_o great_a more_o than_o be_v sufficient_a to_o cover_v the_o globulous_a part_n of_o a_o good_a seal_a thermoscope_n and_o then_o suffer_v the_o instrument_n to_o stay_v a_o pretty_a while_n in_o the_o liquor_n that_o the_o spirit_n of_o wine_n may_v be_v cool_v as_o much_o as_o the_o ambient_fw-la be_v we_o put_v in_o little_a by_o little_a some_o volatile_a salt_n sublime_v from_o sal_fw-la ammoniac_a and_o a_o fix_a alcali_n and_o notwithstanding_o the_o very_a numerous_a but_o not_o great_a bubble_n and_o the_o noise_n and_o froth_n that_o be_v produce_v as_o be_v usual_a upon_o the_o reaction_n of_o acid_n and_o alcalys_n the_o tinct_a spirit_n in_o the_o weatherglass_n after_o have_v continue_v a_o good_a while_n at_o a_o stand_n begin_v a_o little_a to_o descend_v and_o continue_v though_o but_o very_o slow_o to_o do_v so_o till_o the_o spirit_n of_o allom_n be_v glut_v with_o the_o volatile_a salt_n and_o this_o descent_n of_o the_o tinct_a liquor_n in_o the_o instrument_n be_v measure_v appear_v to_o be_v about_o a_o inch_n for_o it_o manifest_o exceed_v seven_o eighth_n by_o compare_v this_o experiment_n with_o the_o first_o part_n of_o the_o forego_n we_o may_v gather_v that_o when_o volatile_a and_o urinous_a salt_n or_o spirit_n for_o the_o saline_a particle_n appear_v sometime_o in_o a_o dry_a and_o sometime_o in_o a_o liquid_a form_n tumultuate_v upon_o their_o be_v mix_v with_o acid_n neither_o the_o heat_n nor_o the_o cold_a that_o ensue_v be_v produce_v by_o a_o conflict_n with_o the_o acid_v precise_o as_o it_o be_v acid_n since_o we_o have_v see_v that_o a_o urinous_a spirit_n produce_v a_o actual_a heat_n with_o spirit_n of_o salt_n and_o the_o distil_a salt_n of_o sal_fw-la ammoniac_a which_o be_v also_o urinous_a with_o the_o acid_a spirit_n of_o roch-allom_n produce_v not_o a_o true_a effervescence_n but_o a_o manifest_a coldness_n as_o the_o same_o salt_n also_o do_v in_o a_o trial_n of_o another_o sort_n which_o be_v this_o exper._n v._n we_o take_v one_o part_n of_o oil_n of_o vitriol_n and_o shake_v it_o into_o twelve_o part_n of_o water_n we_o make_v a_o mixture_n that_o at_o first_o be_v sensible_o warm_a then_o suffer_v this_o to_o cool_v we_o put_v a_o sufficient_a quantity_n of_o it_o into_o a_o wide_a mouth_a glass_n and_o then_o we_o put_v a_o good_a thermoscope_n hermetical_o seal_v above_o who_o ball_n the_o compound_a liquor_n reach_v a_o pretty_a way_n after_o some_o time_n have_v be_v allow_v that_o the_o liquor_n in_o the_o thermometer_n may_v acquire_v the_o temper_n of_o the_o ambient_fw-la we_o put_v in_o by_o degree_n as_o much_o volatile_a salt_n of_o sal_fw-la ammoniac_a as_o will_v serve_v to_o satiate_v the_o acid_a spirit_n of_o the_o mixture_n for_o though_o these_o two_o make_v a_o notable_a conflict_n with_o tumult_n
noise_n and_o froth_n yet_o it_o be_v but_o a_o cold_a ebullition_n if_o i_o may_v so_o style_v it_o for_o the_o spirit_n in_o the_o thermoscope_n descend_v about_o a_o inch_n beneath_o the_o mark_v it_o rest_v at_o when_o the_o seem_a effervescence_n begin_v exper._n vi_o it_o be_v know_v that_o salt-peter_n be_v put_v into_o common_a water_n produce_v a_o sensible_a coldness_n in_o it_o as_o it_o also_o do_v in_o many_o other_o liquor_n but_o that_o the_o same_o salt_n put_v into_o a_o liquor_n of_o another_o constitution_n may_v have_v a_o quite_o differ_v effect_n i_o have_v convince_v some_o inquisitive_a person_n by_o mingle_v eight_o ounce_n of_o fine_a saltpetre_n powder_v with_o six_o ounce_n of_o oil_n of_o vitriol_n for_o by_o that_o commixture_n with_o a_o salt_n that_o be_v not_o only_o actual_o but_o as_o to_o many_o other_o body_n potential_o cold_a the_o oil_n of_o vitriol_n that_o be_v sensible_o cold_a before_o quick_o conceive_v a_o considerable_a degree_n of_o heat_n who_o effect_n also_o become_v visible_a in_o the_o copious_a fume_n that_o be_v emit_v by_o the_o incalescent_n mixture_n exper._n vii_o this_o bring_v into_o my_o mind_n that_o though_o gunpowder_n seem_v to_o be_v of_o so_o igneous_a a_o nature_n that_o when_o it_o be_v put_v upon_o a_o coal_n it_o be_v turn_v present_o into_o flame_n capable_a of_o promote_a the_o deflagration_n of_o the_o charcoal_n and_o kindle_v divers_a body_n it_o meet_v with_o in_o its_o way_n yet_o if_o some_o ounce_n of_o gunpowder_n reduce_v to_o powder_n be_v throw_v into_o four_o or_o five_o time_n as_o much_o water_n it_o will_v very_o manifest_o impart_v a_o coldness_n to_o it_o as_o experience_n make_v with_o as_o well_o as_o without_o a_o seal_a thermoscope_n have_v assure_v i_o this_o and_o the_o forego_n experiment_n do_v ready_o suggest_v a_o inquiry_n into_o the_o nature_n of_o the_o coldness_n which_o philosopher_n be_v wont_a to_o oppose_v to_o that_o which_o immediate_o and_o upon_o the_o first_o contact_n affect_v the_o organ_n of_o sense_n and_o which_o therefore_o they_o call_v actual_a or_o formal_a the_o success_n of_o this_o experiment_n upon_o a_o second_o trial_n serve_v to_o confirm_v it_o which_o be_v the_o more_o strange_a because_o i_o have_v find_v that_o a_o small_a quantity_n of_o oil_n of_o vitriol_n not_o beforehand_o mingle_v with_o water_n will_v produce_v a_o notable_a heat_n in_o its_o conflict_n with_o a_o small_a portion_n of_o just_a such_o salt_n as_o i_o employ_v before_o both_o the_o parcel_n have_v be_v if_o i_o well_o remember_v take_v out_o of_o the_o same_o glass_n and_o this_o heat_n do_v upon_o trial_n make_v with_o the_o former_a thermoscope_n make_v the_o tinct_a spirit_n ascend_v much_o further_a than_o the_o late_o recite_v experiment_n make_v it_o subside_o a_o digression_n about_o potential_a coldness_n potential_a coldness_n have_v be_v general_o look_v upon_o and_o that_o partly_o perhaps_o upon_o the_o score_n of_o its_o very_a name_n as_o so_o abstruse_a a_o quality_n that_o it_o be_v not_o only_o rational_a but_o necessary_a to_o derive_v it_o from_o the_o substantial_a form_n of_o body_n but_o i_o confess_v i_o see_v no_o necessity_n of_o believe_v it_o not_o to_o be_v referrable_a to_o mechanical_a principle_n for_o as_o to_o the_o chief_a instance_n of_o potential_a coldness_n which_o be_v take_v from_o the_o effect_n of_o some_o medicine_n and_o aliment_n in_o the_o body_n of_o man_n it_o may_v be_v say_v without_o improbability_n that_o the_o produce_v refrigeration_n proceed_v chief_o from_o this_o that_o the_o potential_o cold_a body_n be_v make_v up_o of_o corpuscle_n of_o such_o size_n shape_n etc._n etc._n that_o be_v resolve_v and_o disjoin_v by_o the_o menstruum_fw-la of_o the_o stomach_n or_o the_o fluid_v it_o may_v elsewhere_o meet_v with_o they_o do_v so_o associate_v themselves_o with_o the_o small_a part_n of_o the_o blood_n and_o other_o liquor_n as_o by_o clog_a they_o or_o otherwise_o to_o lessen_v their_o wont_a agitation_n and_o perhaps_o make_v they_o act_v in_o a_o peculiar_a way_n as_o well_o as_o less_o brisk_o on_o the_o nervous_a and_o fibrous_a part_n and_o the_o perception_n of_o this_o imminution_n and_o perhaps_o change_v of_o motion_n in_o the_o organ_n of_o feeling_n be_v that_o which_o be_v refer_v to_o the_o body_n that_o produce_v it_o we_o call_v its_o potential_a coldness_n which_o quality_n appear_v by_o this_o account_n to_o be_v as_o i_o be_v say_v before_o but_o a_o relative_n thing_n and_o be_v wont_a to_o require_v the_o diffusion_n or_o dispersion_n of_o the_o small_a part_n of_o the_o corpuscle_n of_o the_o agent_n and_o their_o mingle_v themselves_o with_o the_o liquor_n or_o the_o small_a part_n of_o the_o body_n they_o be_v to_o refrigerate_v and_o therefore_o if_o it_o be_v grant_v that_o in_o ague_n there_o be_v some_o morbific_a matter_n of_o a_o viscous_a or_o not_o easy_o dissipable_a texture_n that_o be_v harbour_v in_o some_o part_n of_o the_o body_n and_o require_v such_o a_o time_n to_o be_v make_v fluid_a and_o resolvable_a the_o cold_a fit_n of_o ague_n need_v not_o be_v so_o much_o admire_v as_o they_o usual_o be_v since_o though_o just_a before_o the_o fit_a the_o same_o parcel_n of_o matter_n that_o be_v to_o produce_v it_o be_v actual_o in_o the_o body_n yet_o it_o be_v not_o by_o reason_n of_o its_o clamminess_n actual_o resolve_v into_o small_a part_n and_o mingle_v with_o those_o of_o the_o blood_n and_o consequent_o can_v not_o make_v such_o a_o change_n in_o the_o motion_n of_o that_o liquor_n as_o be_v feel_v in_o the_o cold_a fit_a of_o a_o ague_n for_o of_o the_o further_a change_n that_o occasion_n the_o hot_a fit_a i_o be_o not_o here_o to_o speak_v and_o in_o some_o other_o disease_n a_o small_a quantity_n of_o matter_n be_v resolve_v into_o minute_n part_n may_v be_v able_a to_o produce_v a_o great_a sense_n of_o coldness_n in_o some_o part_n of_o a_o body_n which_o by_o reason_n of_o the_o structure_n of_o that_o part_n may_v be_v peculiar_o dispose_v to_o be_v affect_v thereby_o as_o i_o have_v know_v hypochondriack_a and_o hysterical_a woman_n complain_v of_o great_a degree_n of_o coldness_n that_o will_v sudden_o invade_v some_o particular_a part_n chief_o of_o the_o head_n or_o back_o and_o be_v for_o a_o good_a while_n troublesome_a there_o and_o that_o if_o a_o frigorific_a vapour_n or_o matter_n be_v exceed_o subtle_a a_o inconsiderable_a quantity_n of_o it_o be_v disperse_v through_o the_o blood_n may_v suffice_v to_o produce_v a_o notable_a refrigeration_n i_o have_v learn_v by_o inquiry_n into_o the_o effect_n of_o some_o poison_n and_o it_o be_v not_o very_o material_a whether_o the_o poison_n general_o speak_v be_v cold_a or_o hot_a if_o it_o meet_v with_o a_o body_n dispose_v to_o have_v those_o affection_n that_o pass_v for_o cold_a one_o produce_v in_o it_o for_o i_o have_v make_v a_o chemical_a liquor_n that_o be_v penetrant_fw-la and_o fiery_a enough_o to_o the_o taste_n and_o have_v acquire_v a_o subtlety_n and_o briskness_n from_o distillation_n with_o which_o i_o can_v almost_o in_o a_o trice_n give_v it_o but_o in_o the_o quantity_n of_o about_o a_o drop_n cast_v a_o animal_n into_o that_o which_o appear_v a_o sleep_n and_o the_o like_a liquor_n in_o a_o not_o much_o great_a quantity_n be_v by_z i_o know_v not_o who_o mistake_n apply_v to_o the_o ache_a tooth_n of_o a_o very_a ingenious_a person_n do_v present_o as_o he_o soon_o after_o tell_v i_o give_v he_o a_o universal_a refrigeration_n and_o tremble_a worse_o than_o the_o cold_a paroxysm_n of_o a_o quartane_a and_o though_o scorpion_n do_v sometime_o cause_v by_o their_o sting_n violent_a heat_n in_o the_o part_n they_o hurt_v yet_o sometime_o also_o the_o quite_o contrary_a happen_v and_o their_o poison_n prove_v in_o a_o high_a degree_n potential_o cold_a as_o may_v be_v learn_v from_o the_o two_o follow_a observation_n record_v by_o eminent_a physician_n 24._o famulum_fw-la habui_fw-la say_v benivenius_n qui_fw-la à _fw-la scorpione_n ictus_fw-la tam_fw-la subito_fw-la ac_fw-la tam_fw-la frigido_fw-la sudore_fw-la toto_fw-la corpore_fw-la perfusus_fw-la est_fw-la ut_fw-la algentissimâ_fw-la nive_v atque_fw-la glacie_n seize_v opprimi_fw-la quereretur_fw-la verùm_fw-la cum_fw-la algenti_fw-la illi_fw-la solam_fw-la theriacam_n ex_fw-la vino_fw-la potentiore_fw-la exhibuissem_fw-la illicò_fw-la curatus_fw-la est_fw-la thus_o far_o he_o to_o who_o narrative_a i_o add_v this_o of_o amatus_fw-la lusitanus_n vir_fw-la qui_fw-la à _fw-la scorpione_n in_o manus_fw-la digito_fw-la punctus_fw-la fuit_fw-la observe_v multum_fw-la dolebat_fw-la &_o refrigeratus_fw-la totus_fw-la contremebat_fw-la &_o per_fw-la corpus_fw-la dolores_fw-la cute_fw-la totâ_fw-la quasi_fw-la acu_fw-la punctâ_fw-la formicantes_fw-la patiebatur_fw-la etc._n etc._n i_o can_v now_o stay_v to_o inquire_v whether_o there_o may_v not_o be_v in_o these_o great_a refrigeration_n make_v by_o so_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 of_o the_o retort_n and_o suffer_v to_o cool_v it_o appear_v to_o have_v a_o fiery_a disposition_n that_o it_o have_v not_o before_o for_o if_o any_o lump_n of_o it_o as_o big_a as_o a_o nutmeg_n or_o a_o almond_n be_v cast_v into_o the_o water_n it_o will_v hiss_v as_o if_o a_o coal_n of_o fire_n have_v be_v plunge_v into_o the_o liquor_n which_o be_v soon_o thereby_o sensible_o heat_v nay_o have_v keep_v divers_a lump_n of_o this_o prepare_a calx_fw-la well_o cover_v from_o the_o air_n for_o divers_a week_n to_o try_v whether_o it_o will_v retain_v this_o property_n i_o find_v as_o i_o expect_v that_o the_o calx_fw-la operate_v after_o the_o same_o manner_n if_o not_o more_o powerful_o for_o sometime_o especial_o when_o it_o be_v reduce_v to_o small_a piece_n it_o will_v upon_o its_o come_n into_o the_o water_n make_v such_o a_o brisk_a noise_n as_o may_v almost_o pass_v for_o a_o kind_n of_o explosion_n these_o phaenomena_n seem_v to_o argue_v that_o the_o disposition_n that_o 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
other_o thing_n into_o a_o box_n and_o send_v down_o into_o the_o country_n with_o a_o great_a charge_n that_o care_n shall_v be_v have_v of_o the_o glass_n the_o wagon_n in_o which_o the_o box_n be_v carry_v happen_v by_o a_o great_a jolt_n that_o have_v almost_o overturn_v it_o to_o be_v so_o rude_o shake_v that_o these_o glass_n be_v both_o break_v and_o the_o liquor_n mingle_v in_o the_o box_n make_v such_o a_o noise_n and_o stink_n and_o send_v forth_o such_o quantity_n of_o smoke_n by_o the_o vent_v which_o the_o fume_n have_v open_v to_o themselves_o that_o the_o passenger_n with_o great_a outcry_n and_o much_o haste_n throw_v themselves_o out_o of_o the_o wagon_n for_o fear_v of_o be_v burn_v in_o it_o the_o trial_n we_o make_v with_o oil_n of_o turpentine_n when_o strong_a spirit_n of_o nitre_n be_v substitute_v in_o the_o stead_n of_o oil_n of_o vitriol_n belong_v not_o to_o this_o place_n exper._n xviii_o but_o though_o petroleum_n especial_o when_o rectify_v be_v as_o i_o have_v elsewhere_o note_v a_o most_o subtle_a liquor_n and_o the_o light_a i_o have_v yet_o have_v occasion_n to_o try_v yet_o to_o show_v you_o how_o much_o the_o incalescence_n of_o liquor_n may_v depend_v upon_o their_o texture_n i_o shall_v add_v that_o have_v mix_v by_o degree_n one_o ounce_n of_o rectify_a petroleum_n with_o a_o equal_a weight_n of_o strong_a oil_n of_o vitriol_n the_o former_a liquor_n seem_v to_o work_v upon_o the_o surface_n of_o this_o last_o name_v almost_o like_o a_o menstruum_fw-la upon_o a_o metal_n innumerous_a and_o small_a bubble_n continual_o ascend_v for_o a_o while_n into_o the_o oleum_fw-la petrae_fw-la which_o have_v its_o colour_n manifest_o alter_v and_o deepen_v by_o the_o operation_n of_o the_o spirituous_a part_n but_o by_o all_o the_o action_n and_o re-action_n of_o these_o liquor_n there_o be_v produce_v no_o such_o smoke_a and_o boil_v or_o intense_a heat_n as_o if_o oil_n of_o turpentine_n have_v be_v employ_v instead_o of_o oil_n of_o vitriol_n the_o change_n which_o be_v produce_v as_o to_o quality_n be_v but_o a_o kind_n of_o tepidness_n discoverable_a by_o the_o touch._n almost_o the_o like_a success_n we_o have_v in_o the_o conjunction_n of_o petroleum_n and_o spirit_n of_o nitre_n a_o more_o full_a account_n whereof_o may_v be_v elsewhere_o meet_v with_o in_o this_o and_o the_o late_a trial_n i_o do_v not_o care_n to_o make_v use_n of_o spirit_n of_o salt_n because_o at_o least_o if_o it_o be_v but_o ordinary_o strong_a i_o find_v its_o operation_n on_o the_o liquor_n above_o mention_v inconsiderable_a and_o sometime_o perhaps_o scarce_o sensible_a in_o comparison_n of_o those_o of_o oil_n of_o vitriol_n and_o in_o some_o case_n of_o dephlegm_v spirit_n of_o nitre_n exper._n xix_o experience_a chemist_n will_v easy_o believe_v that_o it_o be_v not_o difficult_a to_o multiply_v instance_n of_o heat_n producible_a by_o oil_n of_o vitriol_n upon_o solid_a body_n especial_o mineral_n one_o for_o it_o be_v know_v that_o in_o the_o usual_a preparation_n of_o vitriolum_fw-la martis_n there_o be_v a_o great_a effervescence_n excite_v upon_o the_o affusion_n of_o the_o oil_n of_o vitriol_n upon_o file_n of_o steel_n especial_o if_o they_o be_v well_o drench_v in_o common_a water_n and_o it_o will_v scarce_o be_v doubt_v but_o that_o as_o oil_n of_o vitriol_n will_v at_o least_o partly_o dissolve_v a_o great_a many_o both_o calcine_v and_o testaceous_a body_n as_o i_o have_v try_v with_o lime_n oyster-shell_n etc._n etc._n so_o it_o will_v during_o the_o dissolution_n grow_v sensible_o if_o not_o intense_o hot_a with_o they_o as_o i_o find_v it_o to_o do_v both_o with_o those_o new_o name_v and_o other_o as_o chalk_n lapis_n calaminaris_n etc._n etc._n with_o the_o last_o of_o which_o if_o the_o liquor_n be_v strong_a it_o will_v heat_v exceed_o exper._n xx._n wherefore_o i_o will_v rather_o take_v notice_n of_o its_o operation_n upon_o vegetable_n as_o body_n which_o corrosive_a menstruum_n have_v scarce_o be_v thought_n fit_a to_o dissolve_v and_o grow_v hot_a with_o to_o omit_v then_o cherry_n and_o divers_a fruit_n abound_v in_o watery_a juice_n with_o which_o perhaps_o on_o that_o very_a account_n oil_n of_o vitriol_n will_v grow_v hot_a i_o shall_v here_o take_v notice_n that_o for_o trial_n sake_n have_v mix_v a_o convenient_a quantity_n of_o that_o liquor_n with_o raisin_n of_o the_o sun_n beat_v in_o a_o mortar_n the_o raisin_n grow_v so_o hot_a that_o if_o i_o misremember_v not_o the_o glass_n that_o contain_v it_o have_v almost_o burn_v my_o hand_n these_o kind_n of_o heat_n may_v be_v also_o produce_v by_o the_o mixture_n of_o oil_n of_o vitriol_n with_o divers_a other_o vegetable_a substance_n but_o as_o far_o as_o i_o have_v observe_v scarce_o so_o eminent_o with_o any_o dry_a body_n as_o with_o the_o crumb_n of_o white_a bread_n or_o even_o of_o brown_a with_o a_o little_a of_o which_o we_o have_v sometime_o produce_v a_o surprise_a degree_n of_o heat_n with_o strong_a or_o well-dephlegmed_a oil_n of_o vitriol_n which_o be_v to_o be_v suppose_v to_o have_v be_v employ_v in_o the_o forego_n experiment_n and_o all_o other_o mention_v to_o be_v make_v by_o the_o help_n of_o that_o menstruum_fw-la in_o our_o paper_n about_o quality_n unless_o it_o be_v in_o any_o particular_a case_n otherwise_o declare_v exper._n xxi_o it_o be_v as_o little_a observe_v that_o corrosive_a menstruum_n be_v able_a to_o work_v as_o such_o on_o the_o soft_a part_n of_o dead_a animal_n as_o on_o those_o of_o vegetable_n and_o yet_o i_o have_v more_o than_o once_o produce_v a_o notable_a heat_n by_o mix_v oil_n of_o vitriol_n with_o mince_a flesh_n whether_o roast_v or_o raw_a exper._n xxii_o though_o common_a sea-salt_n do_v usual_o impart_v some_o degree_n though_o not_o a_o intense_a one_o of_o coldness_n unto_o common_a water_n during_o the_o act_n of_o dissolution_n yet_o some_o trial_n have_v inform_v i_o that_o if_o it_o be_v cast_v into_o a_o competent_a quantity_n of_o oil_n of_o vitriol_n there_o will_v for_o the_o most_o part_n ensue_v a_o incalescence_n which_o yet_o do_v not_o appear_v to_o succeed_v so_o regular_o as_o in_o most_o of_o the_o forego_n experiment_n but_o that_o heat_n shall_v be_v produce_v usual_o though_o not_o perhaps_o constant_o by_o the_o abovenamed_a menstruum_fw-la and_o salt_n seem_v therefore_o worthy_a of_o our_o notice_n because_o it_o be_v know_v to_o chemist_n that_o common_a salt_n be_v one_o main_a ingredient_n of_o the_o few_o that_o make_v up_o common_a factitious_a sal_fw-la ammoniac_a that_o be_v wont_a to_o be_v sell_v in_o the_o shop_n and_o i_o have_v be_v inform_v that_o the_o excellent_a academian_o of_o florence_n have_v observe_v that_o oil_n of_o vitriol_n will_v not_o grow_v hot_a but_o cold_a by_o be_v put_v upon_o sal_fw-la ammoniac_a something_o like_o which_o i_o take_v notice_n of_o in_o rectify_a spirit_n of_o sulphur_n make_v per_fw-la campanam_fw-la but_o find_v the_o effect_n much_o more_o considerable_a when_o according_a to_o the_o ingenious_a florentine_a experiment_n i_o make_v the_o trial_n with_o oil_n of_o vitriol_n which_o liquor_n have_v already_o furnish_v we_o with_o as_o many_o phaenomena_n for_o our_o present_a purpose_n as_o can_v be_v well_o expect_v from_o one_o agent_n i_o shall_v scarce_o in_o this_o paper_n about_o heat_n make_v any_o far_a use_n of_o it_o but_o proceed_v to_o some_o other_o experiment_n wherein_o it_o do_v not_o intervene_v exper._n xxiii_o we_o take_v a_o good_a lump_n of_o common_a sulphur_n of_o a_o convenient_a shape_n and_o have_v rub_v or_o chafe_v it_o well_o we_o find_v as_o we_o expect_v that_o by_o this_o attrition_n it_o grow_v sensible_o warm_a and_o that_o there_o be_v a_o intestine_a agitation_n which_o you_o know_v be_v local_a motion_n make_v by_o this_o attrition_n do_v appear_v not_o only_o by_o the_o new_o mention_v heat_n who_o nature_n consist_v in_o motion_n and_o by_o the_o antecedent_n pressure_n which_o be_v fit_a to_o put_v the_o part_n into_o a_o disorderly_a vibration_n but_o also_o by_o the_o sulphureous_a steam_n which_o it_o be_v easy_a to_o smell_v by_o hold_v the_o sulphur_n to_o one_o nose_n as_o soon_o as_o it_o have_v be_v rub_v which_o experiment_n though_o it_o may_v seem_v trivial_a in_o itself_o may_v be_v worth_a the_o consideration_n of_o those_o chemist_n who_o will_v derive_v all_o the_o fire_n and_o heat_v we_o meet_v with_o in_o sublunary_a body_n from_o sulphur_n for_o in_o our_o case_n a_o mass_n of_o sulphur_n before_o its_o part_n be_v put_v into_o a_o new_a and_o brisk_a motion_n be_v sensible_o cold_a and_o as_o soon_o as_o its_o part_n be_v put_v into_o a_o great_a agitation_n than_o those_o of_o a_o man_n finger_n it_o grow_v sensible_o hot_a which_o argue_v that_o it_o be_v not_o by_o its_o bare_a presence_n or_o any_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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grant_v not_o to_o be_v find_v in_o they_o thus_o elementary_a water_n though_o never_o so_o pure_a as_o distil_a rain-water_n have_v fluidity_n and_o coldness_n and_o humidity_n and_o transparency_n and_o volatility_n without_o have_v any_o of_o the_o tria_fw-la prima_fw-la and_o the_o pure_a earth_n as_o ash_n careful_o free_v from_o the_o fix_a salt_n have_v gravity_n and_o consistence_n and_o dryness_n and_o colour_n and_o fixity_n without_o owe_v they_o either_o to_o salt_n sulphur_n or_o mercury_n not_o to_o mention_v that_o there_o be_v celestial_a body_n which_o do_v not_o appear_v nor_o be_v wont_a to_o be_v pretend_v to_o consist_v of_o the_o tria_fw-la prima_fw-la that_o yet_o be_v endow_v with_o quality_n as_o the_o sun_n have_v light_a and_o as_o many_o philosopher_n think_v heat_v and_o colour_n and_o the_o moon_n have_v a_o determinate_a consistence_n and_o figuration_n as_o appear_v by_o her_o mountain_n and_o astronomer_n observe_v that_o the_o high_a planet_n and_o 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and_o i_o have_v so_o good_a a_o opinion_n of_o divers_a of_o the_o embracer_n of_o the_o spagyrical_a theory_n of_o quality_n among_o who_o i_o have_v meet_v with_o very_o learned_a and_o worthy_a man_n that_o i_o think_v that_o if_o a_o quality_n be_v pose_v to_o they_o they_o be_v at_o the_o same_o time_n present_v with_o a_o good_a catalogue_n of_o the_o phaenomena_n that_o they_o may_v take_v in_o the_o history_n of_o it_o as_o it_o be_v with_o one_o view_n they_o will_v plain_o perceive_v that_o there_o be_v more_o particular_n to_o be_v account_v for_o than_o at_o first_o they_o be_v aware_a of_o and_o divers_a of_o they_o such_o as_o may_v quite_o discourage_v consider_v man_n from_o take_v upon_o they_o to_o explain_v they_o all_o by_o the_o tria_fw-la prima_fw-la and_o oblige_v they_o to_o have_v recourse_n to_o more_o catholic_n and_o comprehensive_a principle_n i_o know_v not_o whether_o i_o may_v not_o add_v on_o this_o occasion_n that_o methinks_v a_o chemist_n who_o by_o 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doubtful_a speculation_n of_o the_o peripatetic_n or_o other_o adversary_n of_o the_o hermetick_n philosophy_n but_o from_o the_o nature_n of_o thing_n and_o from_o chemical_a experiment_n themselves_o so_o i_o hope_v if_o any_o of_o your_o spagyrical_a friend_n have_v a_o mind_n to_o convince_v i_o he_o will_v attempt_v to_o do_v it_o by_o the_o most_o proper_a way_n which_o be_v by_o actual_o give_v we_o clear_a and_o particular_a explication_n at_o least_o of_o the_o grand_a phaenomena_n of_o quality_n which_o if_o he_o shall_v do_v he_o will_v find_v i_o very_o ready_a to_o acquiesce_v in_o a_o truth_n that_o come_v usher_v in_o and_o endear_v by_o so_o acceptable_a and_o useful_a a_o thing_n as_o a_o philosophical_a theory_n of_o quality_n finis_fw-la reflection_n upon_o the_o hypothesis_n of_o alcali_n and_o acidum_fw-la 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 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and_o other_o vegetable_n and_o in_o the_o gross_a empereumatical_a oil_n of_o wood_n and_o even_o in_o high_a rectify_a spirit_n of_o wine_n which_o therefore_o some_o will_v have_v to_o be_v a_o alcalizat_n liquor_n and_o other_o list_v it_o among_o acid_n though_o i_o do_v not_o find_v it_o neither_o to_o be_v destroy_v or_o much_o alter_v by_o be_v put_v upon_o coral_n or_o salt_n of_o tartar_n as_o will_v happen_v to_o a_o acid_n menstruum_fw-la nor_o yet_o by_o be_v digest_v with_o and_o distil_v from_o sea_n salt_n as_o may_v be_v probable_o expect_v from_o a_o alcalizat_n one_o and_o among_o those_o very_a body_n which_o their_o taste_n persuade_v chemist_n to_o reckon_v among_o acid_n one_o may_v according_a to_o what_o i_o former_o note_v observe_v so_o great_a a_o difference_n and_o variety_n of_o relish_v that_o perhaps_o without_o be_v too_o severe_a i_o may_v say_v that_o if_o i_o be_v to_o allow_v acid_n to_o be_v one_o principle_n it_o shall_v be_v only_o in_o some_o 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that_o i_o add_v that_o as_o for_o those_o that_o will_v extend_v this_o narrow_a chemical_a doctrine_n to_o the_o whole_a object_n of_o natural_a philosophy_n they_o must_v do_v more_o than_o i_o expect_v they_o will_v be_v able_a before_o they_o can_v make_v i_o their_o proselyte_n there_o be_v a_o multitude_n of_o phaenomena_n in_o nature_n divers_a whereof_o i_o elsewhere_o take_v notice_n of_o in_o reference_n to_o the_o chemist_n philosophy_n in_o which_o what_o acidum_fw-la and_o alcali_n have_v to_o do_v i_o confess_v i_o do_v not_o understand_v chap._n vi_o the_o last_o thing_n which_o comprize_v several_a other_o that_o seem_v to_o i_o a_o defect_n in_o the_o doctrine_n of_o alcali_n and_o acidum_fw-la be_v that_o divers_a if_o not_o most_o of_o those_o very_a thing_n that_o be_v pretend_v to_o be_v explicate_v by_o they_o be_v not_o satisfactory_o explicate_v some_o thing_n be_v take_v into_o the_o explication_n that_o be_v either_o not_o fundamental_a enough_o or_o not_o 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colcothar_n stick_v fast_o enough_o to_o they_o not_o to_o be_v easy_o drive_v away_o and_o if_o oil_n of_o vitriol_n be_v in_o a_o due_a proportion_n drop_v upon_o salt_n of_o tartar_n there_o result_v a_o tartarum_fw-la vitriolatum_fw-la wherein_o the_o acid_n and_o alkalizate_a part_n cohere_v so_o strong_o that_o it_o be_v not_o a_o ordinary_a degree_n of_o fire_n will_v be_v able_a to_o disjoin_v they_o insomuch_o that_o divers_a chemist_n have_v though_o very_o erroneous_o think_v this_o compound_a salt_n to_o be_v indestructible_a but_o a_o less_o heavy_a liquor_n than_o the_o ponderous_a oil_n of_o vitriol_n may_v by_o a_o alkaly_n be_v more_o strong_o detain_v than_o that_o oil_n itself_o experience_n have_v assure_v i_o that_o spirit_n of_o salt_n be_v drop_v to_o satiety_n upon_o a_o fix_a alkaly_n i_o use_v either_o that_o of_o nitre_n or_o of_o tartar_n there_o will_v be_v make_v so_o strict_a a_o union_n that_o have_v without_o additament_n distil_v the_o result_a salt_n 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for_o if_o there_o be_v a_o skilful_a or_o lucky_a coaptation_n of_o the_o figure_n of_o the_o particle_n of_o both_o the_o body_n these_o particle_n may_v take_v such_o hold_n of_o one_o another_o as_o to_o compose_v corpuscle_n that_o will_v neither_o by_o reason_n of_o their_o strict_a union_n be_v divide_v by_o heat_n nor_o by_o reason_n of_o their_o result_a grossness_n be_v elevate_v even_o by_o a_o strong_a fire_n or_o at_o least_o by_o such_o a_o degree_n of_o heat_n as_o will_v have_v suffice_v to_o raise_v more_o indispose_v body_n than_o either_o of_o the_o separate_a ingredient_n of_o the_o mixture_n this_o observation_n if_o due_o make_v out_o do_v so_o much_o favour_v our_o doctrine_n about_o the_o mechanical_a origine_fw-la of_o fixation_n and_o may_v be_v of_o such_o use_n not_o only_o to_o chemist_n in_o some_o of_o their_o operation_n but_o to_o philosopher_n in_o assign_v the_o cause_n of_o divers_a phaenomena_n of_o nature_n that_o it_o may_v be_v worth_a while_n to_o exemplify_v it_o by_o some_o instance_n the_o first_o whereof_o i_o shall_v take_v from_o a_o usual_a practice_n of_o the_o chemist_n themselves_o which_o i_o the_o rather_o do_v to_o let_v you_o see_v that_o such_o know_a experiment_n be_v too_o often_o over-looked_n by_o they_o that_o make_v they_o but_o yet_o may_v hint_n or_o confirm_v theory_n to_o those_o that_o reflect_v on_o they_o the_o instance_n i_o here_o speak_v of_o be_v that_o which_o be_v afford_v by_o the_o vulgar_a preparation_n of_o bezoardicum_n minerale_fw-mi for_o though_o the_o rectify_a butter_n or_o oil_n of_o antimony_n and_o the_o spirit_n of_o nitre_n that_o be_v put_v together_o to_o make_v this_o white_a praecipitate_v be_v both_o of_o they_o distil_a liquor_n yet_o the_o copious_a powder_n that_o result_v from_o their_o union_n be_v by_o that_o union_n of_o volatile_a part_n so_o far_o fix_v that_o after_o they_o have_v edulcorate_v it_o with_o water_n they_o prescribe_v the_o calcine_v of_o it_o in_o a_o crucible_n for_o five_o or_o six_o hour_n which_o operation_n it_o can_v not_o bear_v unless_o it_o have_v attain_v to_o a_o considerable_a fixation_n this_o discourse_n suppose_v with_o the_o generality_n of_o chemist_n that_o the_o addition_n of_o a_o due_a quantity_n of_o spirit_n of_o nitre_n be_v necessary_a to_o be_v employ_v in_o make_v the_o bezoardicum_n minerale_fw-mi but_o if_o it_o be_v a_o true_a observation_n which_o be_v attribute_v to_o the_o learned_a guntherus_n billichius_fw-la but_o which_o i_o have_v no_o furnace_n at_o hand_n to_o examine_v when_o i_o hear_v of_o it_o if_o i_o say_v it_o be_v true_a that_o a_o bezoardicum_n minerale_fw-mi may_v be_v obtain_v without_o spirit_n of_o nitre_n bare_o by_o a_o slow_a evaporation_n make_v in_o a_o glasse-dish_n of_o the_o more_o fugitive_a part_n of_o the_o oil_n of_o antimony_n this_o instance_n will_v not_o indeed_o be_v proper_a in_o this_o place_n but_o yet_o will_v belong_v to_o the_o second_o of_o the_o 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mention_v other_o which_o i_o shall_v not_o here_o repeat_v but_o pass_v on_o to_o other_o instance_n pertinent_a to_o our_o present_a design_n i_o late_o mention_v that_o the_o volatility_n of_o the_o spirit_n of_o nitre_n may_v be_v very_o much_o abate_v by_o bring_v they_o to_o coagulate_v into_o crystall_n with_o particle_n of_o corrode_v silver_n but_o i_o shall_v now_o add_v that_o i_o guess_v and_o by_o trial_n find_v that_o these_o nitrous_a spirit_n may_v be_v make_v much_o more_o fix_v by_o the_o addition_n of_o the_o spirit_n of_o salt_n which_o if_o it_o be_v good_a will_v of_o itself_o smoke_n in_o the_o air._n for_o have_v dissolve_v a_o convenient_a quantity_n of_o crystall_n of_o silver_n in_o distil_a water_n and_o precipitate_v they_o not_o with_o a_o solution_n of_o salt_n but_o the_o spirit_n of_o salt_n the_o phlegm_n be_v abstract_v and_o some_o few_o of_o the_o loose_a saline_a particle_n though_o the_o remain_a mass_n be_v press_v with_o a_o violent_a fire_n that_o keep_v the_o retort_n red-hot_a for_o a_o good_a while_n yet_o the_o nitrous_a and_o saline_n spirit_n will_v by_o no_o mean_n be_v drive_v away_o from_o the_o silver_n but_o continue_v in_o fusion_n with_o it_o and_o when_o the_o mass_n be_v take_v out_o these_o spirit_n do_v so_o abound_v in_o it_o that_o it_o have_v no_o appearance_n of_o a_o metal_n but_o look_v rather_o like_o a_o thick_a piece_n of_o horn._n the_o next_o instance_n i_o shall_v name_n be_v afford_v we_o by_o that_o kind_n of_o turbith_n which_o may_v be_v make_v by_o oil_n of_o vitriol_n in_o stead_n of_o the_o aqua_fw-la fortis_fw-la employ_v in_o the_o common_a turpethum_n minerale_fw-mi for_o though_o oil_n of_o vitriol_n be_v a_o distil_a liquor_n and_o mercury_n a_o body_n volatile_a enough_o yet_o when_o we_o abstract_v four_o or_o five_o part_n of_o oil_n of_o vitriol_n from_o one_o of_o quicksilver_n especial_o if_o the_o operation_n be_v repeat_v and_o then_o wash_v off_o as_o much_o as_o we_o 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that_o water_n will_v by_o the_o prevalent_a pressure_n of_o the_o ambient_fw-la whether_o air_n or_o water_n be_v raise_v to_o the_o height_n of_o some_o inch_n in_o capillary_a glass_n and_o in_o the_o pore_n of_o sponge_n who_o consistent_a part_n be_v of_o easy_a session_n than_o the_o side_n of_o glass-pipe_n those_o pore_n will_v be_v enlarge_v and_o consequent_o those_o side_n disjoin_v as_o appear_v by_o the_o dilatation_n and_o swell_a of_o the_o sponge_n and_o second_o the_o agitation_n that_o the_o intrude_a corpuscle_n may_v be_v fit_v to_o receive_v in_o those_o pore_n or_o commissure_v by_o the_o transcursion_n of_o some_o subtle_a ethereal_a matter_n or_o by_o the_o numerous_a knock_n and_o other_o pulse_n of_o the_o swim_n or_o tumble_v corpuscle_n of_o the_o menstruum_fw-la itself_o which_o be_v a_o fluid_a body_n must_v have_v its_o small_a part_n perpetual_o and_o various_o move_v whereby_o the_o engage_a corpuscle_n like_v so_o many_o little_a wedge_n and_o lever_n may_v be_v enable_v to_o wrench_n open_a or_o force_v asunder_o the_o little_a part_n between_o which_o they_o have_v insinuate_v themselves_o but_o i_o shall_v not_o here_o prosecute_v this_o theory_n which_o to_o be_v handle_v full_o will_v require_v a_o discourse_n apart_o since_o these_o conjecture_n be_v propose_v but_o to_o make_v it_o probable_a in_o the_o general_n that_o the_o corrosiveness_n of_o body_n may_v be_v deduce_v from_o mechanical_a principle_n but_o whether_o best_a from_o the_o new_o propose_v one_o or_o any_o other_o need_v not_o be_v anxious_o consider_v in_o these_o note_n where_o the_o thing_n main_o intend_v and_o rely_v on_o be_v the_o experiment_n and_o phaenomena_n themselves_o exper._n i._n it_o be_v obvious_a that_o though_o the_o recent_o express_v juice_n of_o grape_n be_v sweet_a whilst_o it_o retain_v the_o texture_n that_o belong_v to_o it_o as_o it_o be_v new_a especial_o if_o it_o be_v make_v of_o some_o sort_n of_o grape_n that_o grow_v in_o hot_a region_n yet_o after_o fermentation_n it_o will_v in_o tract_n of_o time_n as_o it_o be_v spontaneous_o degenerate_a into_o vinegar_n in_o which_o liquor_n to_o a_o multitude_n of_o the_o more_o solid_a corpuscle_n of_o the_o must_v their_o frequent_a and_o mutual_a attrition_n may_v be_v suppose_v to_o have_v give_v edge_n like_o those_o of_o the_o blade_n of_o sword_n or_o knife_n and_o in_o which_o perhaps_o the_o confuse_a agitation_n that_o precede_v extricate_v or_o as_o it_o be_v unsheathe_v some_o acid_a particle_n that_o derive_v from_o the_o sap_n of_o the_o vine_n or_o perchance_o more_o original_o from_o the_o juice_n of_o the_o earth_n be_v at_o first_o in_o the_o must_v but_o lay_v conceal_v and_o as_o it_o be_v sheathe_v among_o the_o other_o particle_n wherewith_o they_o be_v associate_v when_o they_o be_v press_v out_o of_o the_o grape_n now_o this_o liquor_n that_o by_o the_o forementioned_a or_o other_o like_a mechanical_a change_n be_v become_v vinegar_n do_v so_o abound_v with_o corpuscle_n which_o on_o the_o account_n of_o their_o edge_n or_o their_o otherwise_o sharp_a and_o penetrative_a shape_n be_v acid_n and_o corrosive_a that_o the_o better_a sort_n of_o it_o will_v without_o any_o preparation_n dissolve_v coral_n crabs-eye_n and_o even_o some_o stone_n lapis_fw-la stellaris_fw-la in_o particular_a as_o also_o minium_n or_o the_o calx_fw-la of_o lead_n and_o even_o crude_a copper_n as_o we_o have_v often_o try_v and_o not_o only_o the_o distil_a spirit_n of_o it_o will_v do_v those_o thing_n more_o powerful_o and_o perform_v some_o other_o thing_n that_o mere_a vinegar_n can_v but_o the_o saline_a particle_n wont_a to_o remain_v after_o distillation_n may_v by_o be_v distil_v and_o cohobate_v per_fw-la se_fw-la or_o by_o be_v skilful_o unite_v with_o the_o forego_n spirit_n be_v bring_v to_o a_o menstruum_fw-la of_o no_o small_a efficacy_n in_o the_o dissolution_n and_o other_o preparation_n of_o metalline_a body_n too_o compact_v for_o the_o mere_a spirit_n itself_o to_o work_v upon_o from_o divers_a other_o sweet_a thing_n also_o may_v vinegar_n be_v make_v and_o even_o of_o honey_n skilful_o ferment_v with_o a_o small_a proportion_n of_o common_a water_n may_v be_v make_v a_o vinegar_n strong_a than_o many_o of_o the_o common_a wine-vinegars_a as_o have_v be_v affirm_v to_o i_o by_o a_o very_a candid_a physician_n who_o have_v occasion_n to_o deal_v much_o in_o liquor_n exper._n ii_o not_o only_o several_a dry_a wood_n and_o other_o body_n that_o most_o of_o they_o pass_v for_o insipid_a but_o honey_n and_o sugar_n themselves_o afford_v by_o distillation_n acid_n spirit_n that_o will_v dissolve_v coral_n pearl_n etc._n etc._n and_o will_v also_o corrode_v some_o metal_n and_o metalline_a body_n themselves_o as_o i_o have_v often_o find_v by_o trial._n so_o that_o the_o violent_a operation_n of_o the_o fire_n that_o destroy_v what_o they_o call_v the_o form_n of_o the_o distil_a body_n and_o work_n as_o a_o mechanical_a agent_n by_o agitate_v break_v dissipate_v and_o under_o a_o new_a constitution_n reassemble_v the_o part_n procure_v for_o the_o distiller_n a_fw-fr acid_n corrosive_a menstruum_fw-la which_o whether_o it_o be_v bring_v to_o pass_v by_o make_v the_o corpuscle_n rub_v one_o another_o into_o the_o figure_n of_o little_a sharp_a blade_n or_o by_o split_v some_o solid_a part_n into_o sharp_a or_o cut_a corpuscle_n or_o by_o unshethe_n as_o it_o be_v some_o part_n that_o during_o the_o former_a texture_n of_o the_o body_n do_v not_o appear_v to_o be_v acid_a or_o whether_o it_o be_v rather_o effect_v by_o some_o other_o mechanical_a way_n may_v in_o due_a time_n be_v further_o consider_v exper._n iii_o it_o be_v observe_v by_o refiner_n goldsmith_n and_o chemist_n that_o aqua_fw-la fortis_fw-la and_o aqua_fw-la regius_fw-la which_o be_v corrosive_a menstruum_n dissolve_v metal_n the_o former_a of_o they_o silver_n and_o the_o latter_a gold_n much_o more_o speedy_o and_o copious_o when_o a_o external_a heat_n give_v their_o intestine_a motion_n a_o new_a degree_n of_o vehemency_n or_o velocity_n which_o be_v but_o a_o mechanical_a thing_n and_o yet_o this_o superadded_a measure_n of_o agitation_n be_v not_o only_o in_o the_o abovementioned_a instance_n a_o powerful_o assistant_n cause_n in_o the_o solution_n make_v by_o the_o late_o mention_v corrosive_a liquor_n but_o be_v that_o without_o which_o some_o menstruum_n be_v not_o wont_n sensible_o to_o corrode_v some_o body_n at_o all_o as_o we_o have_v try_v in_o keep_v quicksilver_n in_o three_o or_o four_o time_n its_o weight_n of_o oil_n of_o vitriol_n since_o in_o this_o menstruum_fw-la i_o find_v not_o the_o mercury_n to_o be_v dissolve_v or_o corrode_v though_o i_o keep_v it_o a_o long_a time_n in_o the_o cold_a whereas_o when_o the_o oil_n of_o vitriol_n be_v excite_v by_o a_o convenient_a heat_n which_o be_v not_o faint_a it_o corrode_v the_o mercury_n into_o a_o fine_a white_a calx_fw-la or_o powder_n which_o by_o the_o affusion_n of_o fair_a water_n will_v be_v present_o turn_v into_o a_o yellowish_a calx_fw-la of_o the_o colour_n and_o nature_n of_o a_o turbith_n i_o remember_v also_o that_o have_v for_o trial_n sake_n dissolve_v in_o a_o weak_a spirit_n of_o salt_n a_o four_o part_n of_o its_o weight_n of_o fine_a crystal_n of_o nitre_n we_o find_v that_o it_o will_v not_o in_o the_o cold_a at_o least_o during_o a_o good_a while_n that_o we_o wait_v for_o its_o operation_n dissolve_v leafgold_n but_o when_o the_o menstruum_fw-la be_v a_o little_a heat_v at_o the_o fire_n the_o solution_n proceed_v ready_o enough_o and_o in_o some_o case_n though_o the_o external_a heat_n be_v but_o small_a yet_o there_o may_v intervene_v a_o brisk_a heat_n and_o much_o cooperate_v in_o the_o dissolution_n of_o a_o body_n as_o for_o instance_n of_o quicksilver_n in_o aqua_fw-la fortis_fw-la for_o it_o be_v no_o prodigy_n to_o find_v that_o when_o a_o full_a proportion_n of_o that_o fluid_a metal_n have_v be_v take_v the_o solution_n though_o at_o first_o altogether_o liquid_a and_o as_o to_o sense_n uniform_a come_v to_o have_v after_o a_o while_n a_o good_a quantity_n of_o coagulate_v or_o crystallize_v matter_n at_o the_o bottom_n of_o which_o the_o cause_n may_v be_v that_o in_o the_o very_a act_n of_o corrosion_n there_o be_v excite_v a_o intense_a degree_n of_o heat_n which_o confer_v a_o new_a degree_n of_o agitation_n to_o the_o menstruum_fw-la make_v it_o dissolve_v a_o good_a deal_n more_o than_o afterward_o when_o the_o conflict_n be_v over_o it_o be_v able_a to_o keep_v up_o exper._n iu._n we_o have_v observe_v also_o that_o agitation_n do_v in_o some_o case_n so_o much_o promote_v the_o dissolutive_a power_n of_o saline_n body_n that_o though_o they_o be_v not_o reduce_v to_o that_o subtlety_n of_o part_n to_o which_o a_o strong_a distillation_n bring_v they_o yet_o they_o may_v in_o their_o grosser_n and_o cruder_n
opposite_a or_o conjugate_v for_o want_v of_o a_o better_a word_n i_o call_v corrosibility_n this_o corrosibility_n of_o body_n be_v as_o well_o as_o their_o corrosiveness_n a_o relative_n thing_n as_o we_o see_v that_o gold_n for_o instance_n will_v not_o be_v dissolve_v by_o aqua_fw-la fortis_fw-la but_o will_v by_o aqua_fw-la regis_fw-la whereas_o silver_n be_v not_o soluble_a by_o the_o latter_a of_o these_o menstruum_n but_o be_v by_o the_o former_a and_o this_o relative_a affection_n on_o who_o account_n a_o body_n come_v to_o be_v corrodible_a by_o a_o menstruum_fw-la seem_v to_o consist_v chief_o in_o three_o thing_n which_o all_o of_o they_o depend_v upon_o mechanical_a principle_n of_o these_o qualification_n the_o first_o be_v that_o the_o body_n to_o be_v corrode_v be_v furnish_v with_o pore_n of_o such_o a_o bigness_n and_o figure_n that_o the_o corpuscle_n of_o the_o solvent_a may_v enter_v they_o and_o yet_o not_o be_v much_o agitate_a in_o they_o without_o give_v brisk_a knock_n or_o shake_v to_o the_o solid_a part_n that_o make_v up_o the_o wall_n if_o i_o may_v so_o call_v they_o of_o the_o pore_n and_o it_o be_v for_o want_v of_o this_o condition_n that_o glass_n be_v penetrate_v in_o a_o multitude_n of_o place_n but_o not_o dissipate_v or_o dissolve_v by_o the_o incident_a beam_n of_o light_n which_o permeate_n its_o pore_n without_o any_o considerable_a resistance_n and_o though_o the_o pore_n and_o commissure_v of_o a_o body_n be_v less_o minute_n and_o capable_a of_o let_v in_o some_o grosser_n corpuscle_n yet_o if_o these_o be_v for_o want_v of_o solidity_n or_o rigidness_n too_o flexible_a or_o be_v of_o a_o figure_n incongruous_a to_o that_o of_o the_o pore_n they_o shall_v enter_v the_o dissolution_n will_v not_o ensue_v as_o it_o happen_v when_o pure_a spirit_n of_o wine_n be_v in_o the_o cold_a put_v upon_o salt_n of_o tartar_n or_o when_o aqua_n fortis_fw-la be_v put_v upon_o powder_n of_o sulphur_n the_o second_o qualification_n of_o a_o corrodible_a body_n be_v that_o its_o consistent_a corpuscle_n be_v of_o such_o a_o bulk_n and_o solidity_n as_o do_v not_o render_v they_o uncapable_a of_o be_v disjoin_v by_o the_o action_n of_o the_o insinuate_a corpuscle_n of_o the_o menstruum_fw-la agreeable_a to_o this_o and_o the_o former_a observation_n be_v the_o practice_n of_o chemist_n who_o oftentimes_o when_o they_o will_v have_v a_o body_n to_o be_v wrought_v on_o by_o a_o menstruum_fw-la otherwise_o too_o weak_a for_o it_o in_o its_o crude_a estate_n dispose_v it_o to_o receive_v the_o action_n of_o the_o menstruum_fw-la by_o previous_o open_v it_o as_o they_o speak_v that_o be_v by_o enlarge_a the_o pore_n make_v a_o comminution_n of_o the_o corpuscle_n or_o weaken_v their_o cohesion_n and_o we_o see_v that_o divers_a body_n be_v bring_v by_o fit_a preparation_n to_o be_v resoluble_a in_o liquor_n that_o will_v not_o work_v on_o they_o before_o thus_o as_o be_v late_o note_v limestone_n by_o calcination_n become_v in_o part_n dissoluble_a in_o water_n and_o some_o metalline_a calces_fw-la will_n be_v so_o wrought_v on_o by_o solvent_n as_o they_o will_v not_o be_v by_o the_o same_o agent_n if_o the_o preparation_n of_o the_o metalline_a or_o other_o body_n have_v not_o give_v they_o a_o new_a disposition_n thus_o though_o crude_a tartar_n especial_o in_o lump_n be_v very_o slow_o and_o difficult_o dissoluble_a in_o cold_a water_n yet_o when_o it_o be_v burn_v it_o may_v be_v present_o dissolve_v in_o that_o liquor_n and_o thus_o though_o the_o file_n and_o the_o calx_fw-la of_o silver_n will_v not_o be_v at_o all_o dissolve_v by_o common_a water_n or_o spirit_n of_o wine_n yet_o if_o by_o the_o interposition_n of_o the_o saline_n particle_n of_o aqua_fw-la fortis_fw-la the_o lunar_a corpuscle_n be_v so_o disjoin_v and_o suffer_v such_o a_o comminution_n as_o they_o do_v in_o crystal_n of_o lune_fw-fr the_o metal_n thus_o prepare_v and_o bring_v with_o its_o saline_n additament_n into_o a_o new_a texture_n will_v easy_o enough_o dissolve_v not_o only_o in_o water_n but_z as_o i_o have_v try_v in_o well_o rectify_v spirit_n of_o wine_n and_o the_o like_a solubility_n i_o have_v find_v in_o the_o crystal_n of_o lead_n make_v with_o spirit_n of_o verdigrease_n or_o good_a distil_a vinegar_n and_o in_o those_o of_o copper_n make_v with_o aqua_fw-la fortis_fw-la the_o last_o disposition_n to_o corrosibility_n consist_v in_o such_o a_o cohesion_n of_o the_o part_n whereof_o a_o body_n be_v make_v up_o as_o be_v not_o too_o strict_a to_o be_v superable_a by_o the_o action_n of_o the_o menstruum_fw-la this_o condition_n though_o of_o kin_n to_o the_o former_a be_v yet_o somewhat_o differ_v from_o it_o since_o a_o body_n may_v consist_v of_o part_n either_o bulky_a or_o solid_a which_o yet_o may_v touch_v one_o another_o in_o such_o small_a portion_n of_o their_o surface_n as_o to_o be_v much_o more_o easy_o dissociable_a than_o the_o minute_n or_o less_o solid_a part_n of_o another_o body_n who_o contact_n be_v more_o full_a and_o close_o and_o so_o their_o cohesion_n more_o strict_a by_o what_o have_v be_v say_v it_o may_v seem_v probable_a that_o as_o i_o former_o intimate_v the_o corrosibility_n of_o body_n be_v but_o a_o mechanical_a relation_n result_v from_o the_o mechanical_a affection_n and_o contexture_n of_o its_o part_n as_o they_o intercept_v pore_n of_o such_o size_n and_o figure_n as_o make_v they_o congruous_a to_o those_o of_o the_o corpuscle_n of_o the_o menstruum_fw-la that_o be_v to_o pierce_v between_o they_o and_o disjoin_v they_o that_o the_o quality_n that_o dispose_v the_o body_n it_o affect_v to_o be_v dissolve_v by_o corrosive_n and_o other_o menstruum_n do_v as_o have_v be_v declare_v in_o many_o case_n depend_v upon_o the_o mechanical_a texture_n and_o affection_n of_o the_o body_n in_o reference_n to_o the_o menstruum_fw-la that_o be_v to_o work_v upon_o it_o may_v be_v make_v very_o probable_a by_o what_o we_o be_v in_o due_a place_n to_o deliver_v concern_v the_o pore_n of_o body_n and_o figure_n of_o corpuscle_n but_o yet_o in_o compliance_n with_o the_o design_n of_o these_o note_n and_o agreeable_o to_o my_o custom_n on_o other_o subject_n i_o shall_v subjoin_v a_o few_o experiment_n on_o this_o occasion_n also_o exper._n i._n if_o we_o put_v high_o rectify_v spirit_n of_o wine_n upon_o crude_a sulphur_n or_o even_a flower_n of_o sulphur_n the_o liquor_n will_v lie_v quiet_o thereon_o especial_o in_o the_o cold_a for_o many_o hour_n and_o day_n without_o make_v any_o visible_a solution_n of_o it_o and_o if_o such_o exact_o dephlegm_v spirit_n be_v put_v on_o very_o dry_a salt_n of_o tartar_n the_o salt_n will_v lie_v in_o a_o undissolved_a powder_n at_o the_o bottom_n and_o yet_o if_o before_o any_o liquor_n be_v employ_v the_o sulphur_n be_v gentle_o melt_v and_o then_o the_o alkali_n of_o tartar_n be_v by_o degree_n put_v to_o it_o and_o incorporate_v with_o it_o as_o there_o will_v result_v a_o new_a texture_n discoverable_a to_o the_o eye_n by_o the_o new_a colour_n of_o the_o composition_n so_o there_o will_v emerge_n a_o disposition_n that_o be_v not_o before_o in_o either_o of_o the_o ingredient_n to_o be_v dissolve_v by_o spirit_n of_o wine_n insomuch_o that_o though_o the_o mixture_n be_v keep_v till_o it_o be_v quite_o cold_a or_o long_o after_o too_o provide_v it_o be_v careful_o secure_v from_o the_o access_n of_o the_o air_n the_o spirit_n of_o wine_n be_v put_v to_o it_o and_o shake_v with_o it_o will_n if_o you_o have_v go_v to_o work_v aright_o acquire_v a_o yellow_a tincture_n in_o a_o minute_n of_o a_o hour_n and_o perhaps_o in_o less_o than_o half_a a_o quarter_n of_o a_o hour_n a_o red_a one_o be_v rich_o impregnate_v with_o sulphureous_a particle_n discoverable_a by_o the_o smell_n taste_v and_o divers_a operation_n exper._n ii_o it_o be_v know_v to_o several_a chemist_n that_o spirit_n of_o salt_n do_v not_o dissolve_v crude_a mercury_n in_o the_o cold_a and_o i_o remember_v i_o keep_v they_o for_o a_o considerable_a time_n in_o no_o contemptible_a heat_n without_o find_v any_o solution_n follow_v but_o i_o suppose_v many_o of_o they_o will_v be_v gratify_v by_o a_o experiment_n once_o mention_v to_o i_o by_o a_o ingenious_a german_a gentleman_n namely_o that_o if_o mercury_n be_v precipitate_v per_fw-la se_fw-la that_o be_v reduce_v to_o a_o red_a powder_n without_o additament_n by_o the_o mere_a operation_n of_o the_o fire_n the_o texture_n will_v be_v so_o change_v that_o the_o abovementioned_a spirit_n will_v ready_o dissolve_v it_o for_o i_o find_v it_o upon_o trial_n to_o do_v so_o nay_o sometime_o so_o ready_o that_o i_o scarce_o remember_v that_o i_o ever_o see_v any_o menstruum_fw-la so_o nimble_o dissolve_v any_o metalline_a body_n whatsoever_o exper._n iii_o the_o former_a experiment_n be_v the_o more_o remarkable_a because_o that_o though_o oil_n
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
it_o will_v of_o itself_o continue_v in_o that_o state_n the_o two_o general_a way_n that_o the_o nature_n of_o the_o thing_n seem_v to_o suggest_v to_o he_o that_o consider_v it_o be_v either_o to_o add_v to_o the_o weight_n or_o bulk_n of_o the_o dissolve_a corpuscle_n and_o thereby_o render_v they_o unfit_a to_o accompany_v the_o particle_n of_o the_o menstruum_fw-la in_o their_o motion_n or_o to_o weaken_v the_o sustain_a power_n of_o the_o menstruum_fw-la and_o thereby_o disable_v it_o to_o keep_v the_o metalline_a particle_n swim_v any_o long_o which_o fall_v of_o the_o desert_a part_n of_o the_o metal_n or_o other_o body_n do_v oftentimes_o the_o more_o easy_o ensue_v because_o in_o many_o case_n when_o the_o sustain_a particle_n of_o the_o menstruum_fw-la come_v to_o be_v too_o much_o weaken_v that_o prove_v a_o occasion_n to_o the_o metalline_a corpuscle_n disturb_v in_o the_o former_a motion_n that_o keep_v they_o separate_v to_o make_v occursion_n and_o coalition_n among_o themselves_o and_o their_o fall_n become_v the_o effect_n though_o not_o equal_o so_o of_o both_o way_n of_o precipitation_n as_o on_o the_o other_o side_n there_o be_v several_a occasion_n on_o which_o the_o same_o precipitant_n that_o bring_v the_o swim_a particle_n of_o the_o metal_n to_o stick_v to_o one_o another_o do_v likewise_o by_o mortify_v or_o disable_n the_o saline_a spirit_n or_o other_o part_n of_o the_o solvent_a weaken_v the_o sustain_a power_n of_o that_o liquor_n chap._n iii_o to_o descend_v now_o to_o the_o distinct_a consideration_n about_o these_o two_o way_n the_o first_o of_o the_o most_o genera_fw-la cause_n of_o precipitation_n be_v such_o a_o cohaesion_n procure_v by_o the_o precipitant_n in_o the_o solution_n as_o make_v the_o compound_a corpuscle_n or_o at_o least_o the_o associate_v particle_n of_o the_o dissolve_a body_n too_o heavy_a to_o be_v sustain_v or_o too_o bulky_a to_o be_v keep_v in_o a_o state_n of_o fluidity_n by_o the_o liquor_n that_o in_o many_o precipitation_n there_o be_v make_v a_o coalition_n betwixt_o the_o small_a part_n of_o the_o precipitant_n and_o those_o of_o the_o dissolve_a metal_n or_o other_o body_n and_o frequent_o also_o with_o the_o saline_a spirit_n of_o the_o menstruum_fw-la may_v be_v easy_o show_v by_o the_o weight_n of_o the_o precipitate_v which_o though_o careful_o wash_v and_o dry_v often_o surpass_v and_o sometime_o very_o considerable_o that_o of_o your_o crude_a metal_n that_o be_v dissolve_v of_o which_o we_o late_o give_v a_o instance_n in_o aurum_fw-la fulminans_fw-la and_o precipitate_v silver_n &_o we_o may_v yet_o give_v a_o more_o conspicuous_a one_o in_o that_o which_o chemist_n call_v luna_n cornea_n for_o if_o have_v dissolve_v silver_n in_o good_a aqua_fw-la fortis_fw-la you_o precipitate_v it_o with_o the_o solution_n of_o sea-salt_n in_o fair_a water_n and_o from_o the_o very_a white_a precipitate_v wash_v the_o loose_a adhere_a salt_n the_o remain_a powder_n be_v dry_v and_o 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disclose_v
aqua_fw-la fortis_fw-la i_o add_v twenty_o or_o twenty_o five_o time_n as_o much_o of_o either_o distil_a water_n or_o rain_v water_n for_o though_o common_a water_n will_v sometime_o do_v well_o yet_o it_o seldom_o do_v so_o well_o and_o then_o into_o the_o clear_a solution_n i_o hang_v by_o a_o string_n a_o clean_a piece_n of_o copper_n which_o will_v be_v present_o cover_v with_o little_a shine_a plate_n almost_o like_o scale_n of_o fish_n which_o one_o may_v easy_o shake_v off_o and_o make_v room_n for_o more_o and_o this_o may_v illustrate_v what_o we_o former_o mention_v about_o the_o subside_v of_o metalline_a corpuscle_n when_o they_o convene_v in_o liquor_n wherein_o whilst_o they_o be_v disperse_v in_o very_a minute_n part_n they_o swim_v free_o for_o in_o this_o operation_n the_o little_a scale_n of_o silver_n seem_v to_o be_v pure_o metalline_a and_o there_o be_v no_o saline_a precipitant_n as_o salt_n of_o tartar_n or_o of_o urine_n employ_v to_o make_v they_o subside_o 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be_v heat_v will_v either_o dissolve_v some_o body_n they_o will_v not_o dissolve_v at_o all_o when_o they_o be_v cold_a or_o dissolve_v they_o more_o powerful_o or_o copious_o when_o hot_a than_o cold_a it_o be_v not_o unreasonable_a to_o suppose_v that_o what_o considerable_o lessen_v that_o agitation_n of_o the_o part_n of_o the_o menstruum_fw-la that_o be_v necessary_a to_o the_o keep_v the_o dissolve_a body_n in_o the_o state_n of_o fluidity_n shall_v occasion_v the_o fall_n of_o it_o again_o to_o the_o bottom_n in_o slow_a operation_n i_o can_v give_v divers_a example_n of_o the_o precipitate_v power_n of_o cold_a there_o be_v divers_a solution_n and_o particular_o that_o of_o ambergris_n that_o i_o have_v keep_v fluid_a all_o the_o summer_n which_o in_o the_o winter_n will_v subside_o and_o the_o like_a may_v be_v sometime_o observe_v in_o far_o less_o time_n in_o the_o solution_n of_o brimstone_n make_v in_o certain_a oleaginous_a menstruum_n and_o i_o have_v now_o &_o then_o have_v some_o solution_n and_o particular_o one_o of_o benzoin_v make_v in_o spirit_n of_o wine_n that_o will_v surprise_v i_o with_o the_o turbidness_n which_o begin_v the_o state_n of_o precipitation_n it_o will_v acquire_v upon_o a_o sudden_a change_n of_o the_o weather_n towards_o cold_a though_o it_o be_v not_o in_o the_o winter_n season_n another_o way_n of_o weaken_v the_o menstruum_fw-la and_o so_o cause_v the_o precipitation_n of_o a_o body_n dissolve_v in_o it_o be_v the_o dilute_v or_o lessen_v the_o tenacity_n of_o it_o whether_o that_o tenacity_n proceed_v from_o viscosity_n or_o the_o competent_a number_n and_o constipation_n of_o the_o part_n of_o this_o we_o have_v a_o instance_n in_o the_o magistery_n as_o many_o chemist_n be_v please_v to_o call_v they_o of_o jalap_n benzoin_v and_o of_o divers_a other_o resinous_n and_o gummous_a body_n dissolve_v in_o spirit_n of_o wine_n for_o by_o the_o affusion_n of_o common_a water_n the_o menstruum_fw-la be_v too_o much_o dilute_v be_v not_o able_a to_o keep_v those_o particle_n in_o the_o state_n of_o fluidity_n but_o must_v suffer_v they_o to_o subside_n as_o they_o usual_o do_v in_o the_o form_n of_o white_a powder_n or_o as_o it_o may_v happen_v sometime_o make_v some_o part_n emerge_n example_n also_o of_o this_o kind_n be_v afford_v we_o by_o the_o common_a preparation_n of_o mercurius_n vitæ_fw-la for_o though_o in_o oil_n of_o autimony_n make_v by_o the_o rectification_n of_o the_o butter_n the_o saline_a particle_n be_v so_o numerous_a and_o keep_v so_o close_o to_o one_o another_o that_o they_o be_v able_a to_o sustain_v the_o antimonial_a corpuscle_n they_o carry_v over_o with_o they_o in_o distillation_n and_o keep_v they_o together_o with_o themselves_o in_o the_o form_n of_o a_o liquor_n yet_o when_o by_o the_o copious_a affusion_n of_o the_o water_n those_o sustain_a particle_n be_v separate_v and_o remove_v to_o a_o distance_n from_o each_o other_o the_o antimonial_a corpuscle_n and_o the_o mercurial_a if_o any_o such_o there_o be_v be_v of_o a_o ponderous_a nature_n will_v easy_o subside_o into_o that_o emetic_n powder_n which_o when_o well_o wash_v the_o chemist_n flatter_o enough_o call_v mercurius_n vitæ_fw-la but_o here_o i_o must_v interpose_v a_o advertisement_n which_o will_v help_v to_o show_v we_o how_o much_o precipitation_n depend_v upon_o the_o mechanical_a contexture_n of_o body_n for_o though_o not_o only_o in_o the_o new_o recite_v example_n but_o in_o divers_a other_o the_o affusion_n of_o water_n by_o dilute_v the_o salt_n and_o weaken_v the_o menstruum_fw-la make_v the_o metal_n or_o other_o dissolve_v body_n fall_v precipitately_a to_o the_o bottom_n yet_o if_o the_o saline_a particle_n of_o the_o solvent_a and_o those_o of_o the_o body_n be_v fit_v for_o so_o strict_a a_o union_n that_o the_o corpuscle_n result_v from_o their_o coalition_n will_v not_o so_o easy_o be_v separate_v by_o the_o particle_n of_o water_n as_o suffer_v themselves_o to_o be_v carry_v up_o and_o down_o with_o they_o whether_o because_o of_o the_o minuteness_n of_o these_o compound_a corpuscle_n or_o because_o of_o some_o congruity_n betwixt_o they_o and_o those_o of_o the_o water_n they_o will_v not_o be_v precipitate_v out_o of_o the_o weaken_a solution_n but_o still_o continue_v a_o part_n of_o it_o as_o i_o have_v try_v partly_o with_o some_o solution_n of_o silver_n and_o gold_n make_v in_o acid_a menstruum_n but_o much_o more_o satisfactory_o in_o solution_n of_o copper_n make_v in_o the_o urinous_a spirit_n of_o sal_fw-la ammoniac_a for_o though_o that_o blue_a solution_n be_v dilute_v with_o many_o thousand_o time_n as_o much_o distil_a water_n as_o the_o dissolve_a metal_n weigh_v yet_o its_o swim_a corpuscle_n do_v by_o their_o colour_n manifest_o appear_v to_o be_v disperse_v through_o the_o whole_a liquor_n chap._n vii_o but_o to_o prosecute_v our_o former_a discourse_n which_o we_o break_v off_o after_o the_o mention_n of_o mercurius_n vitæ_fw-la it_o will_v now_o be_v seasonable_a to_o add_v that_o we_o have_v make_v divers_a other_o precipitation_n by_o the_o bare_a affusion_n of_o water_n out_o of_o solution_n and_o sometime_o out_o of_o distil_a liquor_n which_o for_o brevity_n sake_n i_o here_o omit_v that_o i_o may_v hasten_v to_o the_o last_o way_n i_o shall_v now_o stay_v to_o mention_v another_o way_n then_o whereby_o precipitation_n of_o body_n may_v be_v produce_v by_o debilitate_v the_o menstruum_fw-la they_o swim_v in_o be_v by_o lessen_v the_o proportion_n of_o the_o solvent_a to_o the_o solutum_fw-la without_o any_o evaporation_n of_o the_o liquor_n these_o last_o word_n i_o add_v because_o that_o when_o there_o be_v a_o obstruction_n or_o any_o other_o expulsion_n of_o the_o menstruum_fw-la by_o heat_n if_o it_o be_v total_a it_o be_v call_v exsiccation_n as_o when_o dry_a salt_n of_o tartar_n be_v obtain_v from_o the_o filtrated_a lixivium_n of_o the_o calcine_v tartar_n and_o though_o
the_o evaporation_n be_v not_o total_a yet_o the_o effect_n of_o it_o be_v not_o wont_a to_o be_v reckon_v among_o precipitation_n and_o although_o the_o way_n i_o be_o about_o to_o propose_v if_o it_o be_v attentive_o consider_v have_v much_o affinity_n with_o the_o forego_n and_o the_o phaenomena_n may_v perhaps_o in_o some_o sort_n be_v reduce_v to_o they_o yet_o the_o instance_n that_o i_o shall_v name_v have_v not_o i_o know_v be_v thought_n of_o by_o other_o and_o be_v such_o as_o every_o one_o will_v not_o deduce_v from_o what_o i_o have_v be_v mention_v i_o shall_v add_v a_o word_n of_o the_o inducement_n i_o have_v to_o make_v the_o trial_n as_o well_o as_o of_o the_o success_n of_o they_o consider_v then_o that_o water_n will_v not_o dissolve_v salt_n indefinite_o but_o when_o it_o have_v receive_v its_o due_a proportion_n it_o will_v then_o dissolve_v no_o more_o but_z if_o they_o be_v put_v into_o it_o let_v they_o fall_v to_o the_o ground_n and_o continue_v undissolved_a and_o that_o if_o when_o water_n be_v satiate_v any_o of_o the_o liquor_n be_v evaporate_v or_o otherwise_o waste_v it_o will_v in_o proportion_n let_v fall_v the_o salt_n it_o have_v already_o take_v up_o i_o conclude_v that_o if_o i_o can_v mingle_v with_o water_n any_o liquor_n with_o which_o its_o particle_n will_v more_o ready_o associate_v than_o with_o those_o of_o salt_n the_o deprive_v the_o solution_n of_o so_o many_o of_o its_o aqueous_a particle_n will_v be_v equivalent_a to_o the_o evaporation_n of_o as_o much_o water_n or_o thereabouts_o as_o they_o by_o be_v unite_v can_v compose_v wherefore_o make_v a_o lixivium_n of_o distil_a water_n or_o clean_a rain-water_n and_o of_o salt_n of_o tartar_n so_o strong_a that_o if_o a_o grain_n more_o be_v cast_v in_o it_o it_o will_v lie_v undissolved_a at_o the_o bottom_n i_o put_v a_o quantity_n of_o this_o fiery_a lixivium_n into_o a_o slender_a cylindrical_a vessel_n till_o it_o have_v therein_o reach_v such_o a_o height_n as_o i_o think_v fit_a then_o take_v as_o much_o as_o i_o think_v sufficient_a of_o strong_a spirit_n of_o wine_n that_o will_v burn_v every_o drop_n away_o that_o so_o it_o may_v have_v no_o phlegm_n nor_o water_n of_o its_o own_o i_o pour_v this_o upon_o the_o saline_a solution_n and_o shake_v the_o liquor_n pretty_a well_o together_o to_o bring_v they_o to_o mix_v as_o well_o as_o i_o can_v i_o lay_v the_o tube_n in_o a_o quiet_a place_n and_o afterward_o find_v as_o i_o expect_v that_o there_o be_v a_o pretty_a quantity_n of_o white_a salt_n of_o tartar_n fall_v to_o the_o bottom_n of_o the_o vessel_n which_o salt_n have_v be_v mere_o forsake_v by_o the_o aqueous_a particle_n that_o sustain_v it_o before_o but_o forsake_v it_o to_o pass_v into_o the_o spirit_n of_o wine_n wherewith_o they_o be_v more_o dispose_v to_o associate_v themselves_o which_o i_o conclude_v because_o have_v before_o i_o pour_v on_o this_o last_o name_v liquor_n make_v a_o mark_n on_o the_o glass_n to_o show_v 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mechanical_o perform_v and_o account_v for_o i_o will_v by_o no_o mean_n be_v think_v to_o deny_v that_o there_o may_v be_v some_o omit_v here_o which_o either_o other_o that_o shall_v consider_v the_o matter_n with_o more_o attention_n or_o i_o myself_o if_o i_o shall_v have_v leisure_n to_o do_v it_o may_v think_v on_o for_o i_o propose_v these_o but_o as_o the_o chief_a that_o occur_v to_o my_o present_a thought_n and_o i_o forbear_v to_o add_v more_o instance_n to_o exemplify_v they_o because_o i_o will_v not_o injure_v some_o of_o my_o other_o paper_n that_o have_v a_o great_a right_n to_o those_o instance_n only_o this_o i_o shall_v note_v in_o general_n that_o the_o doctrine_n and_o history_n of_o precipitation_n if_o well_o deliver_v will_v be_v a_o thing_n of_o more_o extent_n and_o moment_n than_o seem_v hitherto_o to_o have_v be_v imagine_v since_o not_o only_o several_a of_o the_o change_n in_o the_o blood_n and_o other_o liquor_n and_o juice_n of_o the_o humane_a body_n 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and_o may_v elsewhere_o yet_o further_o declare_v finis_fw-la experiment_n and_o note_n about_o the_o mechanical_a production_n of_o magnetism_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 1676._o advertisement_n concern_v the_o follow_a note_n about_o occult_a quality_n the_o follow_a paper_n about_o magnetism_n and_o electricity_n will_v appear_v with_o less_o disadvantage_n if_o the_o author_n willingness_n and_o promise_n that_o this_o tome_n shall_v be_v furnish_v with_o note_n about_o some_o occult_a quality_n as_o well_o as_o about_o divers_a sort_n of_o those_o that_o be_v presume_v to_o be_v manifest_a do_v not_o prevail_v with_o he_o to_o let_v the_o ensue_a note_n appear_v without_o those_o about_o the_o pore_n of_o body_n and_o figure_n of_o corpuscle_n that_o
of_o vitriol_n and_o the_o file_n of_o steel_n the_o tinct_a spirit_n of_o wine_n be_v not_o at_o all_o impel_v up_o as_o before_o but_o rather_o after_o a_o while_n begin_v to_o subside_o and_o fall_v though_o very_o slow_o about_o a_o quarter_n of_o a_o inch_n the_o like_a experiment_n be_v try_v with_o powder_a sublimate_n in_o common_a water_n the_o liquor_n in_o the_o thermoscope_n be_v scarce_o at_o all_o sensible_o either_o raise_v or_o depress_v which_o argue_v the_o alteration_n as_o to_o heat_n or_o cold_a to_o have_v be_v either_o none_o or_o very_o inconsiderable_a have_v give_v warning_n at_o the_o begin_n of_o this_o section_n that_o in_o it_o i_o aim_v rather_o at_o offer_v various_a than_o numerous_a experiment_n about_o the_o production_n of_o heat_n i_o think_v what_o have_v be_v already_o deliver_v may_v allow_v i_o to_o take_v leave_n of_o this_o subject_a without_o mention_v divers_a instance_n that_o i_o can_v easy_o add_v but_o think_v it_o fit_a at_o present_a to_o omit_v for_o those_o afford_v i_o by_o trial_n about_o antiperistasis_n belong_v to_o a_o paper_n on_o that_o subject_a those_o that_o may_v be_v offer_v about_o potential_a heat_n in_o humane_a body_n will_v perchance_o be_v think_v but_o unnecessary_a after_o what_o have_v be_v say_v of_o potential_a coldness_n from_o which_o a_o attentive_a considerer_n may_v easy_o gather_v what_o according_a to_o our_o doctrine_n be_v to_o be_v say_v of_o the_o contrary_a quality_n and_o divers_a phaenomena_n which_o will_v have_v be_v of_o the_o most_o considerable_a i_o can_v have_v mention_v of_o the_o production_n of_o heat_n since_o in_o they_o that_o quality_n be_v the_o most_o exalt_a i_o reserve_v for_o the_o title_n of_o combustibleness_n and_o incombustibility_n have_v already_o suffer_v this_o collection_n or_o rather_o chaos_n of_o particular_n about_o the_o production_n of_o heat_n to_o swell_v to_o too_o great_a a_o bulk_n finis_fw-la experiment_n and_o observation_n about_o the_o mechanical_a production_n of_o taste_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 observation_n about_o the_o mechanical_a production_n of_o taste_n to_o make_v out_o the_o mechanical_a origine_fw-la or_o production_n of_o sapour_n as_o far_o as_o be_v necessary_a for_o my_o present_a purpose_n it_o will_v be_v expedient_a to_o premise_v in_o general_a that_o according_a to_o our_o notion_n of_o taste_n they_o may_v depend_v upon_o the_o bigness_n figure_n and_o motion_n of_o the_o saporifick_a corpuscle_n consider_v separately_z and_o as_o the_o affection_n of_o single_a and_o very_a minute_n particle_n of_o matter_n or_o else_o in_o a_o state_n of_o conjunction_n as_o two_o or_o more_o of_o these_o affection_n and_o the_o particle_n they_o belong_v to_o may_v be_v combine_v or_o associate_v either_o among_o themselves_o or_o with_o 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which_o enable_v a_o body_n by_o its_o operation_n to_o produce_v in_o we_o that_o sensation_n which_o we_o feel_v or_o perceive_v when_o we_o say_v we_o taste_v that_o this_o something_o whether_o you_o will_v call_v it_o a_o quality_n or_o whatever_o else_o it_o be_v that_o make_v or_o denominate_v a_o object_n saporous_a or_o rather_o if_o i_o may_v be_v allow_v a_o barbarous_a term_n saporifick_a may_v so_o depend_v upon_o the_o shape_n size_n motion_n and_o other_o mechanical_a affection_n of_o the_o small_a part_n of_o the_o taste_v body_n and_o result_v from_o the_o association_n of_o two_o or_o more_o of_o they_o not_o exclude_v their_o congruity_n or_o incongruity_n to_o the_o organ_n of_o taste_v may_v be_v make_v probable_a by_o the_o follow_a instance_n exper._n i._n to_o divide_v a_o body_n almost_o insipid_a into_o two_o body_n of_o very_a strong_a and_o very_a differ_v taste_n it_o be_v observe_v that_o saltpetre_n refine_v and_o by_o that_o purification_n free_v from_o the_o sea-salt_n that_o be_v wont_a to_o be_v mingle_v with_o it_o do_v rather_o cool_v the_o tongue_n than_o make_v any_o great_a saporifick_a impression_n on_o it_o and_o though_o i_o will_v not_o say_v that_o it_o be_v as_o some_o have_v think_v a_o insipid_a body_n yet_o the_o bitterishness_n which_o seem_v to_o be_v its_o proper_a taste_n be_v but_o very_o faint_a and_o languid_a and_o yet_o this_o almost_o insipid_a body_n be_v distil_v by_o the_o way_n of_o inflammation_n which_o i_o elsewhere_o teach_v or_o even_o by_o the_o help_n of_o a_o additament_n of_o such_o clay_n as_o be_v itself_o a_o tasteless_a body_n will_v afford_v a_o nitrous_a spirit_n that_o be_v extreme_o sharp_a or_o corrosive_n upon_o the_o tongue_n and_o will_v dissolve_v several_a metal_n themselves_o and_o a_o fix_a salt_n that_o be_v likewise_o very_o strong_o taste_v but_o of_o a_o taste_n altogether_o different_a from_o that_o of_o the_o spirit_n that_o be_v extreme_o sharp_a or_o corrosive_n upon_o the_o tongue_n and_o according_o this_o salt_n will_v dissolve_v divers_a compact_a body_n that_o the_o other_o will_v not_o work_v on_o and_o will_v precipitate_v divers_a metal_n and_o other_o concretes_n out_o of_o those_o solution_n that_o have_v be_v make_v of_o they_o by_o the_o spirit_n exper._n ii_o of_o two_o body_n the_o one_o high_o acid_n and_o corrosive_a and_o the_o other_o alkalizat_n and_o fiery_a to_o produce_v a_o body_n almost_o insipid_a this_o may_v be_v perform_v by_o the_o way_n i_o have_v elsewhere_o mention_v of_o compose_v saltpetre_n for_o if_o upon_o a_o liquor_n of_o fix_a nitre_n make_v per_fw-la deliquium_fw-la you_o wary_o drop_v good_a spirit_n of_o nitre_n till_o it_o be_v just_a enough_o to_o satiate_v the_o alkaly_n for_o if_o there_o be_v too_o much_o or_o too_o little_a the_o experiment_n may_v miscarry_v we_o may_v by_o a_o gentle_a evaporation_n and_o sometime_o without_o it_o and_o that_o in_o a_o few_o minute_n obtain_v crystal_n which_o be_v dry_v after_o they_o have_v be_v if_o it_o be_v needful_a free_v from_o any_o adhere_a particle_n not_o of_o their_o own_o nature_n will_v have_v upon_o the_o tongue_n neither_o a_o sharp_a nor_o a_o alkalizate_a taste_n but_o that_o faint_a and_o scarce_o sensible_a bitterness_n that_o belong_v to_o saltpetre_n if_o it_o be_v pure_a saltpetre_n for_o the_o impure_a may_v perhaps_o strong_o relish_v of_o the_o common_a salt_n that_o be_v usual_o contain_v in_o it_o the_o like_a production_n of_o saltpetre_n we_o have_v sometime_o make_v in_o far_o less_o time_n and_o sometime_o indeed_o in_o a_o trice_n by_o substitute_v in_o stead_n of_o the_o fix_a salt_n of_o nitre_n the_o saline_a part_n of_o good_a pot_n ash_n careful_o free_v by_o solution_n and_o filtration_n from_o the_o earthy_a and_o feculent_a one_o i_o have_v sometime_o consider_v whether_o the_o phaenomena_n of_o these_o two_o experiment_n may_v not_o be_v explicate_v by_o suppose_v they_o to_o arise_v from_o the_o new_a magnitude_n and_o figure_n of_o the_o particle_n which_o the_o fire_n by_o break_v they_o or_o forcible_o rub_v they_o one_o against_o the_o other_o or_o also_o against_o the_o corpuscle_n of_o the_o additament_n may_v be_v presume_v to_o give_v they_o as_o if_o for_o example_n since_o we_o find_v the_o large_a and_o best_o form_v crystal_n of_o nitre_n to_o be_v of_o a_o prismatical_a shape_n with_o six_o side_n we_o shall_v suppose_v the_o corpuscle_n of_o nitre_n to_o be_v little_a prism_n who_o angle_n and_o end_n be_v too_o obtuse_a or_o blunt_a to_o make_v vigorous_a and_o deep_a impression_n on_o the_o tongue_n and_o yet_o if_o these_o little_a prism_n be_v by_o a_o violent_a heat_n split_v or_o otherwise_o break_v or_o forcible_o make_v as_o it_o be_v to_o grind_v one_o another_o they_o may_v come_v to_o have_v part_n so_o much_o small_a than_o before_o and_o endow_v with_o such_o sharp_a side_n and_o angle_n that_o be_v