as_o to_o investigate_v the_o mechanical_a cause_n of_o precipitation_n of_o the_o mechanical_a cause_n of_o chemical_a precipitation_n chap._n i._n by_o precipitation_n be_v here_o mean_v such_o a_o agitation_n or_o motion_n of_o a_o heterogeneous_a liquor_n as_o in_o no_o long_a time_n make_v the_o part_n of_o it_o subside_o and_o that_o usual_o in_o the_o form_n of_o a_o powder_n or_o other_o consistent_a body_n as_o on_o many_o occasion_n chemist_n call_v the_o substance_n that_o be_v make_v to_o fall_v to_o the_o bottom_n of_o the_o liquor_n the_o precipitate_v so_o for_o brevity_n sake_n we_o shall_v call_v the_o body_n that_o be_v put_v into_o the_o liquor_n to_o procure_v that_o subside_v the_o precipitant_n as_o also_o that_o which_o be_v to_o be_v strike_v down_o the_o precipitable_a substance_n or_o matter_n and_o the_o liquor_n wherein_o it_o swim_v before_o the_o separation_n the_o menstruum_fw-la or_o solvent_a when_o a_o hasty_a fall_n of_o a_o heterogeneous_a body_n 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explication_n of_o it_o to_o some_o secret_a sympathy_n or_o antipathy_n between_o the_o body_n who_o action_n and_o reaction_n intervene_v in_o this_o operation_n but_o if_o this_o be_v the_o way_n propose_v of_o account_v for_o it_o i_o shall_v quick_o have_v occasion_n to_o say_v somewhat_o to_o it_o in_o consider_v the_o way_n propose_v by_o the_o chemist_n who_o be_v wont_a to_o refer_v precipitation_n either_o as_o be_v most_o usual_a to_o a_o sympathy_n betwixt_o the_o precipitate_v body_n and_o the_o menstruum_fw-la which_o make_v the_o solvent_a run_v to_o the_o embrace_n of_o the_o precipitant_n and_o so_o let_v fall_v the_o particle_n of_o the_o body_n sustain_v before_o or_o with_o other_o to_o a_o great_a antipathy_n or_o contrariety_n between_o the_o acid_a salt_n of_o the_o menstruum_fw-la and_o the_o fix_a salt_n of_o the_o oil_n or_o solution_n of_o calcine_v tartar_n which_o be_v the_o most_o general_a and_o usual_a precipitant_n they_o employ_v but_o i_o see_v not_o how_o either_o of_o these_o cause_n will_v either_o reach_v to_o all_o the_o phaenomena_n that_o have_v be_v exhibit_v or_o give_v a_o true_a account_n even_o of_o some_o of_o those_o to_o which_o it_o seem_v applicable_a for_o first_o in_o precipitation_n wherein_o what_o they_o call_v a_o sympathy_n between_o the_o liquor_n be_v suppose_v to_o produce_v the_o effect_n this_o admire_a sympathy_n do_v not_o in_o my_o apprehension_n evince_v such_o a_o mysterious_a occult_a quality_n as_o be_v presume_v but_o rather_o consist_v in_o a_o great_a congruity_n as_o to_o bigness_n shape_n motion_n and_o pore_n of_o the_o minute_n part_n between_o the_o menstruum_fw-la and_o the_o precipitant_n than_o between_o the_o same_o solvent_a and_o the_o body_n it_o keep_v before_o dissolve_v and_o though_o this_o sympathy_n right_o explain_v may_v be_v allow_v to_o have_v a_o interest_n in_o some_o such_o precipitation_n as_o let_v fall_v the_o dissolve_a body_n in_o its_o pristine_a nature_n and_o form_n and_o only_o reduce_v into_o minute_n powder_n yet_o i_o find_v not_o that_o in_o the_o generality_n of_o precipitation_n this_o doctrine_n will_v hold_v for_o in_o some_o that_o we_o have_v make_v of_o gold_n and_o silver_n in_o proper_a menstruum_n after_o the_o subside_v matter_n have_v be_v well_o wash_v and_o dry_v several_a precipitate_v of_o gold_n make_v some_o with_o oil_n of_o tartar_n which_o abound_v with_o a_o fix_a salt_n and_o be_v the_o usual_a precipitant_n and_o some_o with_o a_o urinous_a spirit_n which_o work_v by_o virtue_n of_o a_o salt_n high_o fugitive_a or_o volatile_a i_o find_v the_o powder_n to_o exceed_v the_o weight_n of_o the_o gold_n and_o silver_n i_o have_v put_v to_o dissolve_v and_o the_o eye_n itself_o sufficient_o discover_v such_o precipitate_v not_o to_o be_v mere_a metalline_a powder_n but_o composition_n who_o consist_v not_o as_o have_v be_v by_o some_o body_n suspect_v of_o the_o combine_a salt_n alone_o but_o of_o the_o metalline_a part_n also_o may_v be_v strong_o conclude_v not_o only_o from_o the_o ponderousness_n of_o divers_a of_o they_o in_o reference_n to_o their_o bulk_n but_o also_o manifest_o from_o the_o reduction_n of_o true_a malleable_a metal_n from_o several_a of_o they_o chap._n ii_o the_o other_o chemical_a way_n of_o explicate_a precipitation_n may_v in_o a_o right_a sense_n be_v make_v use_n of_o by_o a_o naturalist_n on_o some_o particular_a occasion_n but_o i_o think_v it_o much_o too_o narrow_a and_o defective_a as_o it_o be_v in_o a_o general_a way_n propose_v to_o be_v fit_a to_o be_v acquiesce_v in_o for_o first_o it_o be_v plain_a that_o it_o be_v not_o only_a salt_n of_o tartar_n and_o other_o fix_a alcaly_n that_o precipitate_v most_o body_n that_o be_v dissolve_v in_o acid_a menstruum_n as_o in_o make_v of_o aurum_fw-la fulminans_fw-la oil_n of_o tartar_n precipitate_v the_o gold_n out_o of_o aqua_fw-la regis_fw-la but_o acid_a liquor_n themselves_o do_v on_o many_o occasion_n no_o less_o powerful_o precipitate_v metal_n and_o other_o body_n out_o of_o one_o another_o thus_o spirit_n of_o salt_n as_o i_o have_v often_o try_v precipitate_v silver_n out_o of_o aqua_fw-la fortis_fw-la the_o corrosive_a spirit_n of_o nitre_n copious_o precipitate_v that_o white_a powder_n whereof_o they_o make_v bezoardicum_n minerale_fw-mi spirit_n or_o oil_n of_o sulphur_n make_v by_o a_o glass-bell_n precipitate_v coral_n pearl_n etc._n etc._n dissolve_v in_o spirit_n of_o vinegar_n as_o be_v know_v to_o many_o chemist_n who_o now_o use_v this_o oleum_fw-la sulphuris_fw-la per_fw-la campanam_fw-la to_o make_v the_o magistery_n of_o pearl_n etc._n etc._n for_o which_o vulgar_a chemist_n employ_v oleum_fw-la tartari_fw-la per_fw-la deliquium_fw-la i_o have_v sometime_o make_v a_o menstruum_fw-la wherein_o though_o there_o be_v both_o acid_n and_o alcalizate_a salt_n yet_o i_o do_v not_o find_v that_o either_o acid_a spirit_n or_o oil_n of_o tartar_n or_o even_o spirit_n of_o urine_n will_v precipitate_v the_o dissolve_a substance_n and_o i_o have_v observe_v both_o that_o salt_n of_o a_o contrary_a nature_n will_v precipitate_v body_n out_o of_o the_o same_o menstruum_fw-la as_o not_o only_a salt_n of_o tartar_n but_o sea-salt_n be_v dissolve_v will_v precipitate_v each_o other_o and_o each_o of_o they_o apart_o will_v precipitate_v silver_n out_o of_o aqua_fw-la fortis_fw-la and_o that_o even_o where_o there_o be_v a_o confess_a contrariety_n betwixt_o two_o liquor_n it_o may_v be_v so_o order_v that_o neither_o of_o they_o shall_v precipitate_v what_o be_v dissolve_v by_o the_o other_o of_o which_o i_o shall_v have_v occasion_n to_o give_v ere_o long_o a_o remarkable_a instance_n but_o it_o will_v best_o appear_v that_o the_o abovemention_v theory_n of_o the_o peripatetic_n and_o chemist_n be_v at_o least_o insufficient_a to_o solve_v the_o phaenomena_n many_o of_o which_o be_v probable_o not_o know_v to_o most_o of_o they_o and_o perhaps_o not_o weigh_v by_o 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thorough_o dissolve_v
if_o it_o be_v well_o ground_n with_o near_a a_o equal_a weight_n of_o quicksilver_n and_o be_v a_o few_o time_n sublime_v to_o mix_v they_o the_o more_o exact_o it_o will_v become_v so_o mild_a that_o it_o will_v not_o so_o much_o as_o taste_v sharp_a upon_o the_o tongue_n so_o that_o chemist_n be_v wont_a to_o call_v it_o mercurius_n dulcis_fw-la and_o yet_o this_o dulcification_n seem_v to_o be_v perform_v in_o a_o mechanical_a way_n for_o most_o part_n of_o the_o salt_n that_o make_v the_o sublimate_n so_o corrosive_a abide_v in_o the_o mercurius_n dulcis_fw-la but_o by_o be_v compound_v with_o more_o quicksilver_n they_o be_v dilute_v by_o it_o and_o which_o be_v more_o considerable_a acquire_v a_o new_a texture_n which_o render_v they_o unfit_a to_o operate_v as_o they_o do_v before_o when_o the_o fret_a salt_n be_v not_o join_v with_o a_o sufficient_a quantity_n of_o the_o mercury_n to_o inhibit_v their_o corrosive_a activity_n it_o may_v perhaps_o somewhat_o help_v we_o to_o 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may_v depend_v even_o upon_o such_o seem_o slight_a mechanical_a circumstance_n as_o one_o will_v not_o easy_o suspect_v any_o necessity_n of_o i_o shall_v employ_v a_o experiment_n which_o though_o the_o unpractised_a may_v easy_o fail_v of_o make_v well_o yet_o when_o i_o try_v it_o after_o the_o best_a manner_n i_o do_v it_o with_o good_a success_n i_o put_v then_o upon_o lead_n a_o good_a quantity_n of_o well_o rectify_v aqua_fw-la fortis_fw-la in_o which_o the_o metal_n as_o i_o expect_v continue_v undissolved_a though_o if_o the_o chemist_n say_v true_o that_o the_o dissolve_v power_n of_o the_o menstruum_fw-la consist_v only_a in_o the_o acid_a salt_n that_o it_o abound_v with_o it_o seem_v natural_o to_o follow_v that_o the_o more_o abundance_n of_o they_o there_o be_v in_o a_o determinate_a quantity_n of_o the_o liquor_n it_o shall_v be_v the_o more_o powerful_o able_a to_o dissolve_v metalline_a and_o mineral_n body_n and_o in_o effect_n we_o see_v that_o if_o corrosive_a menstruum_n be_v not_o sufficient_o dephlegm_v they_o will_v not_o work_v on_o divers_a of_o they_o but_o notwithstanding_o this_o plausible_a doctrine_n of_o the_o chemist_n conjecture_v that_o the_o saline_n particle_n that_o swim_v in_o our_o aqua_fw-la fortis_fw-la may_v be_v more_o throng_v together_o than_o be_v convenient_a for_o a_o body_n of_o such_o a_o texture_n of_o saline_n part_n and_o such_o interval_n between_o they_o i_o dilute_v the_o menstruum_fw-la by_o add_v to_o it_o what_o i_o think_v fit_a of_o fair_a water_n and_o then_o find_v that_o the_o desire_a congruity_n betwixt_o the_o agent_n and_o the_o patient_n emerge_v and_o the_o liquor_n quick_o begin_v to_o fall_v upon_o the_o metal_n and_o dissolve_v it_o and_o if_o you_o will_v try_v a_o experiment_n to_o the_o same_o purpose_n that_o needs_o much_o less_o circumspection_n to_o make_v it_o succeed_v you_o may_v instead_o of_o employ_v lead_n reiterate_v what_o i_o elsewhere_o mention_v myself_o to_o have_v try_v with_o silver_n which_o will_v not_o dissolve_v in_o too_o strong_a aqua_fw-la fortis_fw-la but_o will_v be_v ready_o fall_v upon_o by_o that_o liquor_n when_o i_o have_v weaken_a it_o with_o common_a water_n and_o this_o it_o may_v suffice_v to_o have_v say_v at_o present_a of_o the_o power_n or_o faculty_n that_o be_v find_v in_o some_o body_n of_o corrode_a or_o dissolve_v other_o whereof_o i_o have_v not_o find_v among_o the_o aristotelian_o i_o have_v meet_v with_o so_o much_o as_o a_o offer_n at_o a_o intelligible_a account_n and_o i_o the_o less_o expect_v the_o vulgar_a chemist_n will_v from_o their_o hypostatical_a principle_n afford_v we_o a_o satisfactory_a one_o when_o beside_o the_o particular_n that_o from_o the_o nature_n of_o the_o thing_n and_o helmont_n write_n have_v be_v late_o allege_v against_o their_o hypothesis_n i_o consider_v how_o slight_a account_n they_o be_v wont_n to_o give_v we_o even_o of_o the_o familiar_a phaenomena_n of_o corrosive_a liquor_n 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from_o its_o be_v weaken_a by_o the_o spirit_n of_o salt_n as_o well_o because_o according_a to_o they_o gold_n be_v far_o the_o more_o compact_a metal_n of_o the_o two_o and_o require_v a_o more_o potent_a menstruum_fw-la to_o work_v upon_o it_o as_o because_o this_o same_o compound_a liquor_n will_v ready_o dissolve_v copper_n and_o to_o the_o same_o purpose_n with_o this_o experiment_n i_o shall_v allege_v divers_a other_o if_o i_o think_v this_o the_o fit_a place_n wherein_o i_o can_v propose_v they_o sect_n ii_o about_o the_o mechanical_a origine_fw-la of_o corrosibility_n corrosibility_n be_v the_o quality_n that_o answer_v corrosiveness_n he_o that_o have_v take_v notice_n of_o the_o advertisement_n i_o former_o give_v about_o my_o use_n of_o the_o term_n corrosiveness_n in_o these_o note_n section_n may_v easy_o judge_v in_o what_o sense_n i_o employ_v the_o name_n of_o the_o other_o quality_n which_o whether_o you_o will_v style_v it_o
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