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slice_v and_o put_v it_o into_o a_o colts-head_n or_o some_o other_o convenient_a glass_n pour_v to_o it_o a_o pretty_a deal_n of_o spirit_n of_o wine_n and_o place_v the_o vessel_n in_o warm_a sand_n increase_v the_o heat_n by_o degree_n till_o the_o spirit_n of_o wine_n begin_v to_o simper_v or_o to_o boyl_n a_o little_a and_o continue_v that_o degree_n of_o fire_n if_o you_o have_v put_v liquor_n enough_o you_o will_v quick_o have_v the_o wax_v dissolve_v then_o take_v it_o off_o the_o fire_n you_o may_v either_o suffer_v it_o to_o cool_a as_o hasty_o as_o with_o safety_n to_o the_o glass_n you_o can_v or_o pour_v it_o whilst_o it_o be_v yet_o hot_a into_o a_o filtre_n of_o paper_n and_o either_o in_o the_o glass_n where_o it_o cool_v or_o in_o the_o filtre_n you_o will_v soon_o find_v the_o wax_n and_o menstruum_fw-la together_o reduce_v into_o a_o white_a substance_n almost_o like_o butter_n which_o by_o let_v the_o spirit_n exhale_v will_v shrink_v into_o a_o much_o lesser_a 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add_v of_o this_o way_n of_o produce_v whiteness_n in_o body_n by_o praecipitate_v they_o out_o of_o the_o liquor_n wherein_o they_o have_v be_v dissolve_v but_o i_o think_v it_o may_v be_v more_o useful_a to_o admonish_v you_o pyrophilus_n that_o this_o observation_n admit_v of_o restriction_n and_o be_v not_o so_o universal_a as_o by_o this_o time_n perhaps_o you_o have_v begin_v to_o think_v it_o for_o though_o most_o precipitate_v body_n be_v white_a yet_o i_o know_v some_o that_o be_v not_o for_o gold_n dissolve_v in_o aqua_fw-la regis_fw-la whether_o you_o praecipitate_v it_o with_o oil_n of_o tartar_n or_o with_o spirit_n of_o sal_fw-la ammoniac_a will_v not_o afford_v a_o white_a but_o a_o yellow_a calx_fw-la mercury_n also_o though_o reduce_v into_o sublimate_n and_o precipitate_v with_o liquor_n abound_v with_o volatile_a salt_n as_o the_o spirit_n draw_v from_o urine_n hartshorn_n and_o other_o animal_n substance_n yet_o will_v afford_v as_o we_o note_a in_o our_o first_o experiment_n about_o whiteness_n and_o blackness_n a_o white_a praecipitate_v yet_o with_o the_o solution_n of_o pot-ash_n and_o other_o lixiviate_v salt_n it_o will_v let_v fall_v a_o orange-tawny_a powder_n and_o so_o will_v crude_a antimony_n if_o be_v dissolve_v in_o a_o strong_a lie_n you_o pour_v as_o far_o as_o i_o remember_v any_o acid_n liquor_n upon_o the_o solution_n new_o filtrate_v whilst_o it_o be_v yet_o warm_a and_o if_o upon_o the_o filtrated_a solution_n of_o vitriol_n you_o pour_v a_o solution_n of_o one_o of_o these_o fix_a salt_n there_o will_v subside_o a_o copious_a substance_n very_o far_o from_o have_v any_o whiteness_n which_o the_o chemist_n be_v please_v to_o call_v how_o proper_o i_o have_v elsewhere_o examine_v the_o sulphur_n of_o vitriol_n so_o that_o most_o dissolve_v body_n be_v by_o precipitation_n bring_v to_o white_a powder_n and_o yet_o some_o afford_v praecipitates_fw-la of_o
acknowledge_v that_o we_o have_v take_v notice_n of_o so_o many_o change_v make_v by_o the_o intervention_n of_o salt_n in_o the_o colour_n of_o mix_v body_n that_o it_o have_v lessen_v our_o wonder_n that_o though_o many_o chemist_n be_v wont_a to_o ascribe_v the_o colour_n of_o such_o body_n to_o their_o sulphureous_a and_o the_o rest_n to_o their_o mercurial_a principle_n yet_o paracelsus_n himself_o direct_v we_o in_o the_o indagation_n of_o colour_n to_o have_v a_o eye_n principal_o upon_o salt_n as_o we_o find_v in_o that_o passage_n of_o he_o wherein_o he_o take_v upon_o he_o to_o oblige_v his_o reader_n much_o by_o instruct_v they_o of_o what_o thing_n they_o be_v to_o expect_v the_o knowledge_n from_o each_o of_o the_o three_o distinct_a principle_n of_o body_n alias_o say_v he_o colorum_fw-la similis_fw-la ratio_fw-la est_fw-la de_fw-fr quibus_fw-la brevem_fw-la institutionem_fw-la hanc_fw-la attendite_fw-la quod_fw-la scilicet_fw-la colores_fw-la omnes_fw-la ex_fw-la sale_n prodeant_fw-la sal_fw-la enim_fw-la that_fw-mi colorem_fw-la that_o balsamum_n and_o a_o little_a beneath_o jam_fw-la natura_fw-la 242._o ipsa_fw-la colores_fw-la protrahit_fw-la ex_fw-la sale_n cuique_fw-la speciei_fw-la dans_fw-fr illum_fw-la qui_fw-la ipsi_fw-la competit_fw-la etc._n etc._n after_o which_o he_o conclude_v itaque_fw-la qui_fw-la rerum_fw-la omnium_fw-la corpora_fw-la cognoscere_fw-la vult_fw-la huic_fw-la opus_fw-la est_fw-la ut_fw-la anté_fw-fr omne_fw-la cognoscat_fw-la sulphur_n ab_fw-la hoc_fw-la qui_fw-la desiderat_fw-la novisse_fw-la colores_fw-la be_v scientiam_fw-la istorum_fw-la petat_fw-la à _fw-la sale_n qui_fw-la scire_fw-la vult_fw-la virtutes_fw-la be_v scrutetur_fw-la arcana_fw-la mercurii_n sic_fw-la nimirum_fw-la fundamentum_fw-la hauserit_fw-la mysteriorum_fw-la in_fw-la quolibet_fw-la crescenti_fw-la indagandorum_fw-la prout_fw-la natura_fw-la cuilibet_fw-la speciei_fw-la ea_fw-la ingessit_fw-la but_o though_o paracelsus_n ascribe_v to_o each_o of_o his_o beloved_a hypostatical_a principle_n much_o more_o than_o i_o fear_v will_v be_v find_v to_o belong_v to_o it_o yet_o if_o we_o please_v to_o consider_v colour_n not_o as_o philosopher_n but_o as_o dyer_n the_o concurrence_n of_o salt_n to_o the_o strike_n and_o change_n of_o colour_n and_o their_o efficacy_n will_n i_o suppose_v appear_v so_o considerable_a that_o we_o shall_v not_o need_v to_o quarrel_n much_o with_o paracelsus_n for_o ascribe_v in_o this_o place_n for_o i_o dare_v not_o affirm_v that_o he_o use_v to_o be_v still_o of_o one_o mind_n the_o colour_n of_o body_n to_o their_o salt_n if_o by_o salt_n he_o here_o understand_v not_o only_o elementary_a salt_n but_o such_o also_o as_o be_v common_o take_v for_o salt_n as_o alâ—m_v crystal_n of_o tartar_n vitriol_n etc._n etc._n because_o the_o saline_n principle_n do_v chief_o abound_v in_o they_o though_o indeed_o they_o be_v as_o we_o elsewhere_o declare_v mix_v body_n and_o have_v most_o of_o they_o beside_o what_o be_v saline_n both_o sulphureous_a aqueous_a and_o gross_a or_o earthy_a part_n but_o though_o pyrophilus_n i_o have_v observe_v a_o red_a and_o green_a to_o be_v produce_v the_o former_a by_o acid_n salt_n the_o late_a by_o salt_n not_o acid_n in_o the_o express_a juice_n of_o so_o many_o differ_v vegetable_a substance_n that_o the_o observation_n if_o pursue_v may_v prove_v as_o i_o say_v of_o good_a use_n yet_o to_o show_v you_o how_o much_o e'vn_v these_o effect_n depend_v upon_o the_o particular_a texture_n of_o body_n i_o must_v subjoin_v some_o case_n wherein_o i_o who_o be_o somewhat_o backward_o to_o admit_v observation_n for_o universal_a have_v the_o curiosity_n to_o discover_v that_o the_o experiment_n will_v not_o uniformly_n succeed_v and_o of_o these_o exception_n the_o chief_a that_o i_o now_o remember_v be_v reducible_a to_o the_o follow_v three_o experiment_n xxvi_o and_o first_o i_o think_v fit_a to_o try_v the_o operation_n of_o acid_n salt_n upon_o vegetable_a substance_n that_o be_v already_o and_o by_o their_o own_o nature_n red._n and_o according_o i_o make_v trial_n upon_o syrup_n of_o clove-july-flower_n the_o clear_a express_a juice_n of_o the_o succulent_a berry_n of_o spina_n cervina_fw-la or_o buck-thorn_n which_o i_o have_v long_o keep_v by_o i_o for_o the_o sake_n of_o its_o deep_a colour_n upon_o red_a rose_n infusion_n of_o brazil_n and_o divers_a other_o vegetable_a substance_n on_o some_o of_o which_o crush_v as_o be_v often_o mention_v upon_o white_a paper_n which_o be_v also_o to_o be_v understand_v in_o most_o of_o these_o experiment_n if_o no_o circumstance_n of_o they_o argue_v otherwise_o spirit_n of_o salt_n either_o make_v no_o considerable_a change_n or_o alter_v the_o colour_n but_o from_o a_o dark_a to_o a_o light_a red._n how_o it_o will_v succeed_v in_o many_o other_o vegetable_a juice_n and_o infusion_n of_o the_o same_o colour_n i_o have_v at_o present_a so_o few_o at_o hand_n that_o i_o must_v leave_v you_o to_o find_v it_o our_o yourself_o but_o as_o for_o the_o operation_n of_o the_o other_o sort_n of_o salt_n upon_o these_o red_a substance_n i_o find_v it_o not_o very_o uniform_a some_o red_a or_o reddish_n infusion_n as_o of_o rose_n be_v turn_v thereby_o into_o a_o dirty_a colour_n but_o yet_o incline_v to_o green_n nor_o be_v the_o syrup_n of_o clove-july-flower_n turn_v by_o the_o solution_n of_o pot-ash_n to_o a_o much_o better_a though_o somewhat_o a_o greener_n colour_n another_o sort_n of_o red_a infusion_n be_v by_o a_o alcaly_a not_o turn_v into_o a_o green_a but_o advance_v into_o a_o crimson_a as_o i_o shall_v have_v occasion_n to_o note_v ere_o long_o but_o there_o be_v other_o sort_n as_o particular_o the_o lovely_a colour_a juice_n of_o buckthorn_n berry_n that_o ready_o pass_v into_o a_o lovely_a green_n experiment_n xxvii_o among_o other_o vegetable_n which_o we_o think_v likely_a to_o afford_v exception_n to_o the_o general_n observation_n about_o the_o differ_a change_n of_o colour_n produce_v by_o acid_n and_o sulphureous_a salt_n we_o think_v fit_a to_o make_v trial_n upon_o the_o flower_n of_o jasmin_n they_o be_v both_o white_a as_o to_o colour_n and_o esteem_v to_o be_v of_o a_o more_o oily_a nature_n than_o other_o flower_n whereupon_o have_v take_v the_o white_a part_n only_o of_o the_o flower_n and_o rub_v they_o somewhat_o hard_o with_o my_o finger_n upon_o a_o piece_n of_o clean_a paper_n it_o appear_v very_o little_o discolour_v nor_o have_v spirit_n of_o salt_n wherewith_o i_o moisten_v one_o part_n of_o it_o any_o considerable_a operation_n upon_o it_o but_o spirit_n of_o urine_n and_o somewhat_o more_o effectual_o a_o strong_a alcalizate_a solution_n do_v immediate_o turn_v the_o almost_o colourless_a paper_n moisten_v by_o the_o juice_n of_o the_o jasmin_n not_o as_o those_o liquor_n be_v wont_a to_o do_v when_o put_v upon_o the_o juice_n of_o other_o flower_n of_o a_o good_a green_n but_o of_o a_o deep_a though_o somewhat_o greenish_a yellow_n which_o experiment_n i_o do_v afterward_o at_o several_a time_n repeat_v with_o the_o like_a success_n but_o it_o seem_v not_o that_o a_o great_a degree_n of_o unctuousness_n be_v necessary_a to_o the_o production_n of_o the_o like_a effect_n for_o when_o we_o try_v the_o experiment_n with_o the_o leave_n of_o those_o pure_o white_a flower_n that_o appear_v about_o the_o end_n of_o winter_n and_o be_v common_o call_v snow_n drop_n the_o event_n be_v not_o much_o unlike_o that_o which_o we_o have_v be_v new_o mention_v experiment_n xxviii_o another_o sort_n of_o instance_n to_o show_v how_o much_o change_n of_o colour_n effect_v by_o salt_n depend_v upon_o the_o particular_a texture_n of_o the_o colour_a body_n have_v be_v afford_v i_o by_o several_a yellow_a flower_n and_o other_o vegetable_n as_o marigold_n leave_v early_a prim-rose_n fresh_o mad_a etc._n etc._n for_o be_v rub_v upon_o white_a paper_n till_o they_o imbue_v it_o with_o their_o colour_n i_o find_v not_o that_o by_o the_o addition_n of_o alcalizate_a liquor_n nor_o yet_o by_o that_o of_o a_o urinous_a spirit_n they_o will_v be_v turn_v either_o green_a or_o red_a nor_o do_v so_o acid_n a_o spirit_n as_o that_o of_o salt_n considerable_o alter_v their_o colour_n save_v that_o it_o seem_v a_o little_a to_o dilute_v it_o only_o in_o some_o early_a prim-rose_n it_o destroy_v the_o great_a part_n of_o the_o colour_n and_o make_v the_o paper_n almost_o white_a again_o and_o mad_a also_o afford_v some_o thing_n peculiar_a and_o very_o differ_v from_o what_o we_o have_v new_o mention_v for_o have_v gather_v some_o root_n of_o it_o and_o whilst_o they_o be_v recent_a express_v upon_o white_a paper_n the_o yellow_a juice_n a_o alcalizate_a solution_n drop_v upon_o it_o do_v not_o turn_v it_o either_o green_a or_o white_a but_o red._n and_o the_o bruise_a mad_a itself_o be_v drench_v with_o the_o like_a alcalizate_a solution_n exchange_v also_o its_o yellowishness_n for_o a_o redness_n a_o admonition_n touch_v the_o four_o precede_a experiment_n have_v thus_o pyrophilus_n give_v you_o divers_a instance_n to_o
as_o far_o as_o i_o can_v judge_v by_o what_o i_o have_v try_v be_v able_a to_o make_v it_o a_o yellow_a liquor_n insomuch_o that_o a_o single_a drop_n of_o a_o rich_a solution_n of_o cochineel_n in_o spirit_n of_o urine_n be_v dilute_v with_o above_o a_o ounce_n of_o fair_a water_n exhibit_v no_o yellowishness_n at_o all_o but_o a_o fair_a though_o somewhat_o faint_a pink_n or_o carnation_n and_o even_o when_o cochineel_n be_v by_o degree_n dilute_v much_o beyond_o the_o new_o mention_v colour_n by_o the_o way_n former_o relate_v to_o you_o in_o the_o twenty_o four_o experiment_n i_o remember_v not_o that_o there_o appear_v in_o the_o whole_a trial_n any_o yellow_a but_o if_o you_o take_v balsom_a of_o sulphur_n for_o instance_n though_o it_o may_v appear_v in_o a_o glass_n where_o it_o have_v a_o good_a thickness_n to_o be_v of_o a_o deep_a red_a yet_o if_o you_o shake_v the_o glass_n or_o pour_v a_o few_o drop_n on_o a_o sheet_n of_o white_a paper_n spread_v they_o on_o it_o with_o your_o finger_n the_o balsam_n that_o fall_v back_o along_o the_o side_n of_o the_o glass_n and_o that_o which_o stain_v the_o paper_n will_v appear_v yellow_a not_o red._n and_o there_o be_v divers_a tincture_n such_o as_o that_o of_o amber_n make_v with_o spirit_n of_o wine_n to_o name_n now_o no_o more_o that_o will_v appear_v either_o yellow_a or_o red_a according_a as_o the_o vessel_n that_o they_o fill_v be_v slender_n or_o broad_n experiment_n xxxiii_o but_o to_o proceed_v to_o the_o experiment_n i_o be_v about_o to_o deliver_v first_o oil_n or_o spirit_n of_o turpentine_n though_o clear_a as_o fair_a water_n be_v digest_v upon_o the_o pure_o white_a sugar_n of_o lead_n have_v in_o a_o short_a time_n afford_v we_o a_o high_a red_a tincture_n that_o some_o artist_n be_v please_v to_o call_v the_o balsam_n of_o saturn_n which_o they_o very_o much_o and_o probable_o not_o altogether_o without_o cause_n extol_v as_o a_o excellent_a medicine_n in_o divers_a outward_a affection_n experiment_n xxxiv_o next_o take_v of_o common_a brimstone_n fine_o powder_v five_o ounce_n of_o salarmoniack_a likewise_o pulverise_v a_o equal_a weight_n of_o beat_a quicklime_n six_o ounce_n mix_v these_o powder_n exquisite_o and_o distil_v they_o through_o a_o retort_n place_v in_o sand_n by_o degree_n of_o fire_n give_v at_o length_n as_o intense_a a_o heat_n as_o you_o well_o can_v in_o sand_n there_o will_v come_v over_o if_o you_o have_v wrought_v well_o a_o volatile_a tincture_n of_o sulphur_n which_o may_v probable_o prove_v a_o excellent_a medicine_n and_o shall_v have_v be_v mention_v among_o the_o other_o preparation_n of_o sulphur_n which_o we_o have_v elsewhere_o impart_v to_o you_o but_o that_o it_o be_v very_o pertinent_a to_o our_o present_a subject_n the_o change_n of_o colour_n for_o though_o none_o of_o the_o ingredient_n be_v red_a the_o distil_v liquor_n will_v be_v so_o and_o this_o liquor_n if_o it_o be_v well_o draw_v will_v upon_o a_o little_a agitation_n of_o the_o vial_n first_o unstopped_a especial_o if_o it_o be_v hold_v in_o a_o warm_a hand_n send_v forth_o a_o copious_a fume_v not_o red_a like_o that_o of_o nitre_n but_o white_a and_o sometime_o this_o liquor_n may_v be_v so_o draw_v that_o i_o remember_v not_o long_o since_o i_o take_v pleasure_n to_o observe_v in_o a_o parcel_n of_o it_o that_o ingredient_n not_o red_a do_v not_o only_o yield_v by_o distillation_n a_o volatile_a spirit_n that_o be_v red_a but_o though_o that_o liquor_n do_v upon_o the_o bare_a open_n of_o the_o bottle_n it_o be_v keep_v in_o drive_v we_o away_o with_o the_o plenty_n and_o sulphureous_a send_v of_o a_o white_a steam_n which_o it_o send_v forth_o yet_o the_o liquor_n itself_o be_v touch_v by_o our_o finger_n do_v immediate_o die_v they_o black_n experiment_n xxxv_o the_o three_o and_o last_o experiment_n i_o shall_v now_o mention_v to_o show_v how_o prone_a body_n abound_v in_o sulphureous_a part_n be_v to_o afford_v a_o red_a colour_n be_v one_o wherein_o by_o the_o operation_n of_o a_o saline_n spirit_n upon_o a_o white_a or_o whitish_a body_n which_o according_a to_o the_o chemist_n shall_v be_v altogether_o sulphureous_a a_o redness_n may_v be_v produce_v not_o as_o in_o the_o former_a experiment_n slow_o but_o in_o the_o twinkle_n of_o a_o eye_n we_o take_v then_o of_o the_o essential_a oil_n of_o anniseed_n which_o have_v this_o peculiarity_n that_o in_o cold_a weather_n it_o lose_v its_o fluidity_n and_o the_o great_a part_n of_o its_o transparency_n and_o look_n like_o a_o white_a or_o whitish_a ointment_n and_o near_o at_o hand_n seem_v to_o consist_v of_o a_o multitude_n of_o little_a soft_a scale_n of_o this_o coagulate_v stuff_v we_o spread_v a_o little_a with_o a_o knife_n upon_o a_o piece_n of_o white_a paper_n and_o let_v fall_n on_o it_o and_o mix_v with_o it_o a_o drop_n or_o two_o of_o oil_n of_o vitriol_n immediate_o as_o we_o foresee_v there_o emerge_v together_o with_o some_o heat_n and_o smoke_n a_o blood-red_n colour_n which_o therefore_o be_v in_o a_o trice_n produce_v by_o two_o body_n whereof_o the_o one_o have_v but_o a_o whitish_a colour_n and_o the_o other_o if_o careful_o rectify_v have_v no_o colour_n at_o all_o experiment_n xxxvi_o but_o on_o this_o occasion_n pyrophilus_n we_o must_v add_v once_o for_o all_o that_o in_o many_o of_o the_o above-recited_n experiment_n though_o the_o change_n of_o colour_n happen_v as_o we_o have_v mention_v they_o yet_o the_o emergent_a or_o produce_v colour_n be_v oft_o time_n very_a subject_n to_o degenerate_a both_o quick_o and_o much_o notwithstanding_o which_o since_o the_o change_n we_o have_v set_v down_o do_v happen_v present_o upon_o the_o operation_n of_o the_o body_n upon_o each_o other_o or_o at_o the_o time_n by_o we_o specify_v that_o be_v sufficient_a both_o to_o justify_v our_o veracity_n and_o to_o show_v what_o we_o intend_v it_o not_o be_v essential_a to_o the_o genuineness_n of_o a_o colour_n to_o be_v durable_a for_o a_o fade_a leaf_n that_o be_v ready_a to_o rot_v and_o moulder_v into_o dust_n may_v have_v as_o true_a a_o yellow_a as_o a_o wedge_n of_o gold_n which_o so_o obstinate_o resist_v both_o time_n and_o fire_n and_o the_o reason_n why_o i_o take_v occasion_n from_o the_o former_a experiment_n to_o subjoin_v this_o general_a advertisement_n be_v that_o i_o have_v several_a time_n observe_v that_o the_o mixture_n result_v from_o the_o oil_n of_o vitriol_n and_o of_o anniseed_n though_o it_o acquire_v a_o thick_a consistence_n than_o either_o of_o the_o ingredient_n have_v have_v quick_o lose_v its_o colour_n turn_v in_o a_o very_a short_a time_n into_o a_o dirty_a grace_n at_o least_o in_o the_o superficial_a part_n where_o it_o be_v expose_v to_o the_o air_n which_o last_o circumstance_n i_o therefore_o mention_n because_o that_o though_o it_o seem_v probable_a that_o this_o degeneration_n of_o colour_n may_v oft_o time_n and_o in_o divers_a case_n proceed_v from_o the_o further_a action_n of_o the_o saline_n corpuscle_n and_o the_o other_o ingredient_n upon_o one_o another_o yet_o in_o many_o case_n much_o of_o the_o quick_a change_n of_o colour_n seem_v ascribeable_a to_o the_o air_n as_o may_v be_v make_v probable_a by_o several_a reason_n the_o first_o whereof_o may_v be_v fetch_v from_o the_o new_o recite_v example_n of_o the_o two_o oil_n the_o next_o may_v be_v that_o we_o have_v sometime_o observe_v long_a window-curtain_n of_o light_a colour_n to_o have_v that_o part_n of_o they_o which_o be_v expose_v to_o the_o air_n when_o the_o window_n be_v open_a of_o one_o colour_n and_o the_o low_a part_n that_o be_v shelter_v from_o the_o air_n by_o the_o wall_n of_o another_o colour_n and_o the_o three_o argument_n may_v be_v fetch_v from_o divers_a observation_n both_o of_o other_o and_o our_o own_o for_o of_o that_o pigment_n so_o well_o know_v in_o painter_n shop_n by_o the_o name_n of_o turnso_n our_o industrious_a parkinson_n in_o the_o particular_a account_n he_o give_v of_o the_o plant_n that_o bear_v it_o tell_v we_o also_o that_o the_o berry_n when_o they_o be_v at_o their_o full_a maturity_n have_v within_o they_o between_o the_o outer_a skin_n and_o the_o inward_a 12._o kernel_n or_o seed_n a_o certain_a juice_n or_o moisture_n which_o be_v rub_v upon_o paper_n or_o cloth_n at_o the_o first_o appear_v of_o a_o fresh_a and_o lovely_a green_a colour_n but_o present_o change_v into_o a_o kind_n of_o bluish_a purple_n upon_o the_o cloth_n or_o paper_n and_o the_o same_o cloth_n afterward_o wet_a in_o water_n and_o wring_v forth_o will_v colour_n the_o water_n into_o a_o claret_n wine_n colour_n and_o these_o conclude_v he_o be_v those_o rag_n of_o cloth_n which_o be_v usual_o call_v turnsol_n in_o the_o druggist_n or_o grocer_n shop_n and_o to_o this_o observation_n of_o our_o botanist_n we_o
hypothesis_n 120._o first_o from_o the_o contrary_a nature_n of_o whiteness_n and_o blackness_n white_n reflect_v most_o beam_n outward_o black_a shall_v reflect_v most_o inward_a 120._o next_o from_o the_o black_a appearance_n of_o all_o body_n when_o shadow_a and_o the_o manner_n how_o this_o paucity_n of_o refection_n outward_o be_v cause_v be_v further_a explicate_v byshew_v that_o the_o superficial_a part_n may_v be_v conica_fw-la and_o pyramical_a 121._o this_o and_o other_o considration_n former_o deliver_v illustrate_v by_o experiment_n with_o black_a and_o white_a marble_n 122_o 123._o three_o from_o the_o black_a appearance_n of_o holes_n in_o whit_n linen_n and_o from_o the_o appearance_n of_o velvet_n stroke_v several_a way_n and_o from_o a_o observation_n of_o carrot_n 124_o 125._o four_o from_o the_o small_a reflection_n from_o black_a in_o a_o darken_a room_n 125_o 126._o five_o from_o the_o experiment_n of_o a_o chequer_v tile_n expose_v to_o the_o sunbeam_n 127._o which_o be_v to_o be_v prefer_v before_o a_o similar_v experiment_n try_v in_o italy_n with_o black_a and_o white_a marble_n 128._o some_o other_o congruous_a observation_n 129._o six_o from_o the_o roast_n blacked_a egg_n in_o the_o sun_n 130._o seven_o by_o the_o observation_n of_o the_o blind_a man_n late_o mention_v and_o of_o another_o mention_v by_o bartholine_n 130._o that_o notwithstanding_o all_o these_o reason_n the_o author_n be_v not_o absolute_o positive_a but_o remain_v yet_o a_o secker_n after_o the_o true_a nature_n of_o whiteness_n and_o blackness_n 131_o 132._o experiment_n in_o consort_n touch_v whiteness_n and_o blackness_n the_o first_o experiment_n with_o a_o solution_n of_o sublimate_n make_v white_a with_o spirit_n of_o urine_n etc._n etc._n 133_o 134._o the_o second_o experiment_n with_o a_o infusion_n of_o gall_n make_v black_a with_o vitriol_n etc._n etc._n 135_o 136_o further_o discourse_v of_o 137._o the_o three_o experiment_n of_o the_o black_n of_o hrtshorn_n and_o ivory_n and_o tartar_n and_o by_o a_o father_n calcination_n make_v they_o white_a 138_o 139._o the_o four_o experiment_n limit_v the_o chmist_n principle_n adusta_fw-la nigra_fw-la sed_fw-la perusta_fw-mi aâ—a_fw-mi by_o several_a instance_n of_o calcine_v alabaster_n lead_n antimony_n vitriol_n and_o by_o the_o testimony_n of_o bellonius_fw-la about_o the_o white_a charcoles_n of_o oxy-caedar_a and_o by_o that_o of_o camphire_n 140_o 141_o 142._o that_o which_o follow_v about_o inks_n be_v misplace_v by_o a_o error_n of_o the_o printer_n for_o it_o belong_v to_o what_o have_v be_v former_o say_v of_o gall_n 142_o 143._o the_o five_o experiment_n of_o the_o black_a smoke_n of_o camphire_n 144._o the_o six_o experiment_n of_o a_o black_a caput_fw-la mortuum_n of_o oil_n of_o vitriol_n with_o oil_n of_o wormwood_n and_o also_o with_o oil_n of_o winter-savory_n 145._o the_o seven_o experiment_n of_o whiten_a wax_n 146._o the_o eight_o experiment_n with_o tin-glass_n and_o sublimate_n 147_o 148._o the_o nine_o experiment_n of_o a_o black_a powder_n of_o gold_n in_o the_o bottom_n of_o aquafortis_n and_o of_o the_o black_n of_o refine_v gold_n and_o silver_n 148_o 149._o the_o ten_o experiment_n of_o the_o stain_a hair_n skin_n ivory_n etc._n etc._n black_a with_o crystal_n of_o silver_n 150_o 151._o the_o eleven_o experiment_n about_o the_o blackness_n of_o the_o skin_n and_o hair_n of_o negro_n and_o inhabitant_n of_o hot_a climate_n several_a objection_n be_v make_v and_o the_o whole_a matter_n more_o full_o discourse_v and_o state_v from_o several_a notable_a history_n and_o observation_n from_o the_o 151_o to_o the_o 167._o the_o twelve_o experiment_n of_o the_o white_a powder_n afford_v by_o precipitate_v several_a body_n as_o crab_n eye_n minium_n coral_n silver_n lead_v tin_n quicksilver_n tin-glass_n antimony_n benzoin_v and_o resinous_n gum_n out_o of_o spirit_n of_o wine_n etc._n etc._n but_o this_o be_v not_o universal_a since_o other_o body_n as_o gold_n antimony_n quicksilver_n etc._n etc._n may_v be_v precipitate_v of_o other_o colour_n 168_o 169_o 170._o the_o thirteen_o experiment_n of_o change_a the_o blackness_n of_o some_o body_n into_o other_o colour_n 171_o 172._o and_o of_o whiten_v what_o will_v be_v minium_n and_o copper_n with_o tin_n and_o of_o copper_n with_o arsenic_n which_o with_o coppil_v again_o vanish_v of_o cover_v the_o colour_n of_o that_o of_o â…”_n of_o gold_n with_o â…”_n of_o silver_n melt_v in_o a_o mass_n together_o 173_o 174._o the_o fourteen_o experiment_n of_o turn_v the_o black_a body_n of_o horn_n into_o a_o white_a immediate_o with_o scrape_v without_o change_v the_o substantial_a form_n or_o without_o the_o intervention_n of_o salt_n sulphur_n or_o mercury_n 176._o the_o fifteen_o experiment_n contain_v several_a instance_n against_o the_o opinion_n of_o the_o chemist_n that_o sulphur_n adust_a be_v the_o cause_n of_o blackness_n and_o the_o whole_a matter_n be_v full_o discuss_v and_o state_v from_o 176_o to_o 184._o part_v the_o three_o concern_v fromiscuous_a experiment_n about_o colour_n experiment_n the_o first_o in_o confirmation_n of_o a_o former_a conjecture_n about_o the_o generation_n of_o colour_n from_o diversity_n of_o reflection_n be_v set_v down_o several_a observation_n make_v in_o a_o darken_a room_n 186_o 187._o experiment_n the_o second_o that_o white_a linen_n seem_v tinge_v with_o the_o red_a of_o silk_n place_v near_o it_o in_o a_o light_a room_n 188_o 189._o experiment_n the_o three_o of_o the_o trajection_n of_o light_n through_o colour_a paper_n 189_o 190._o experiment_n the_o four_o observation_n of_o a_o prism_n in_o a_o dark_a room_n 191_o 192._o experiment_n the_o five_o of_o the_o refract_n and_o reflect_v prismatical_a colour_n in_o a_o light_a room_n 193._o experiment_n the_o six_o of_o the_o vanish_v of_o the_o iris_n of_o the_o prism_n upon_o the_o access_n of_o a_o great_a adventitious_a light_n 194._o experiment_n the_o seven_o of_o the_o appearance_n of_o the_o same_o colour_a paper_n by_o candle-light_n 195_o 196._o experiment_n the_o eight_o of_o the_o yellowness_n of_o the_o flame_n of_o a_o candle_n 197._o experiment_n the_o nine_o of_o the_o greenish_a blue_a transparency_n of_o leaf_n gold_n 198._o experiment_n the_o ten_o of_o the_o curious_a tincture_n afford_v by_o lignum_fw-la nephriticum_fw-la from_o 199_o to_o 203._o several_a trial_n for_o the_o investigation_n of_o the_o nature_n of_o it_o from_o 204_o to_o 206._o kircher_n '_o s_o relation_n of_o this_o wood_n set_v down_o and_o examine_v from_o 206_o to_o 212._o a_o corollary_n on_o this_o ten_o experiment_n show_v how_o it_o may_v be_v applicable_a for_o the_o discover_v whether_o any_o salt_n be_v of_o a_o acid_n or_o a_o sulphureous_a and_o alcalizate_a nature_n from_o 213_o to_o 216._o the_o eleven_o experiment_n of_o certain_a piece_n of_o glass_n that_o afford_v this_o variety_n of_o colour_n and_o of_o the_o way_n of_o so_o ting_a any_o plate_n of_o glass_n with_o silver_n from_o 216_o to_o 219._o the_o twelve_o experiment_n of_o the_o mix_v and_o temper_v of_o painter_n pigment_n 219_o 220_o 221._o the_o thirteen_o experiment_n of_o compound_v several_a colour_n by_o traject_v the_o sunbeam_n through_o tinged_a glass_n from_o 221_o to_o 224._o the_o fourteen_o experiment_n of_o the_o compound_v of_o real_a and_o fantastical_a colour_n and_o the_o result_v 224_o 225_o 226._o as_o also_o the_o same_o of_o fantastical_a colour_n 226_o 227._o the_o fifteen_o experiment_n of_o vary_v the_o trajected_a iris_n by_o a_o colour_a prism_n 228_o 229._o the_o sixteen_o experiment_n of_o the_o red_a fume_n of_o spirit_n of_o nitre_n and_o the_o resemble_v redness_n of_o the_o horizontal_a sunbeam_n 230_o 231._o the_o seventeen_o experiment_n of_o make_v a_o green_a by_o nine_o kind_n of_o composition_n from_o 231_o to_o 236._o and_o some_o deduction_n from_o they_o against_o the_o necessity_n of_o recur_v to_o substantial_a form_n and_o hypostatical_a principle_n for_o the_o production_n of_o colour_n from_o 237_o to_o 240._o the_o eighteen_o experiment_n of_o several_a composition_n of_o blue_n and_o yellow_a which_o produce_v not_o a_o green_a and_o of_o the_o production_n of_o a_o green_a by_o other_o colour_n 241_o 242._o the_o nineteen_o experiment_n contain_v several_a instance_n of_o produce_v colour_n without_o the_o alteration_n of_o any_o hypostatical_a principle_n by_o the_o prism_n bubble_n and_o feather_n from_o 242_o to_o 245._o the_o twenty_o experiment_n of_o turn_v the_o blue_n of_o violet_n into_o a_o red_a by_o acid_n salt_n and_o to_o a_o green_a by_o alcalizate_n 245_o 246._o and_o the_o use_n of_o it_o for_o investigate_a the_o nature_n of_o salt_n 247_o 248._o the_o one_o and_o twenty_o experiment_n of_o the_o same_o change_v effect_v by_o the_o same_o mean_n on_o the_o blue_a tincture_n of_o corn-flower_n 249_o 250._o and_o some_o restriction_n to_o show_v it_o not_o to_o be_v so_o general_a a_o propriety_n as_o one_o may_v imagine_v 251._o the_o twenty_o
likewise_o dispose_a after_o another_o manner_n than_o they_o be_v before_o such_o affusion_n and_o in_o some_o chemical_a oil_n as_o particular_o that_o of_o lemmon_n pill_n by_o bare_o shake_v the_o glass_n that_o hold_v it_o into_o bubble_n that_o transposition_n of_o the_o part_n which_o be_v consequent_a to_o the_o shake_v will_v show_v you_o on_o the_o surface_n of_o the_o bubble_n exceed_v orient_a and_o lively_a colour_n which_o when_o the_o bubble_n relapse_n into_o the_o rest_n of_o the_o oil_n do_v immediate_o vanish_v 24._o i_o know_v not_o pyrophilus_n whether_o i_o shall_v mention_v as_o a_o distinct_a way_n because_o it_o be_v of_o a_o somewhat_o more_o general_a nature_n that_o power_n whereby_o a_o liquor_n may_v alter_v the_o colour_n of_o another_o body_n by_o put_v the_o part_n of_o it_o into_o motion_n for_o though_o possible_o the_o motion_n so_o produce_v do_v as_o such_o seldom_o sudden_o change_v the_o colour_n of_o the_o body_n who_o part_n be_v agitate_a yet_o this_o seem_v to_o be_v one_o of_o the_o most_o general_n however_o not_o immediate_a cause_n of_o the_o quick_a change_n of_o colour_n in_o body_n for_o the_o part_n be_v put_v into_o motion_n by_o the_o adventitious_a liquor_n divers_a of_o they_o that_o be_v before_o unite_v may_v become_v thereby_o disjoin_v and_o when_o that_o motion_n cease_v or_o decay_v other_o of_o they_o may_v stick_v together_o and_o that_o in_o a_o new_a order_n by_o which_o mean_v the_o motion_n may_v sometime_o produce_v permanent_a change_n of_o colour_n as_o in_o the_o experiment_n you_o will_v meet_v with_o hereafter_o of_o present_o turn_v a_o snowy_a white_a body_n into_o a_o yellow_a by_o the_o bare_a affusion_n of_o fair_a water_n which_o probable_o so_o dissolve_v the_o saline_n corpuscle_n that_o remain_v in_o the_o calx_fw-la and_o set_v they_o at_o liberty_n to_o act_n upon_o one_o another_o and_o the_o metal_n far_o more_o powerful_o than_o the_o water_n without_o the_o assistance_n of_o such_o saline_n corpuscle_n can_v do_v and_o though_o you_o rub_v blue_a vitriol_n how_o venereal_a and_o unsophisticated_a soever_o it_o be_v upon_o the_o whet_v blade_n of_o a_o knife_n it_o will_v not_o impart_v to_o the_o iron_n its_o latent_fw-la colour_n but_o if_o you_o moisten_v the_o vitriol_n with_o your_o hospital_n or_o common_a water_n the_o particle_n of_o the_o liquor_n disjoyn_v those_o of_o the_o vitriol_n and_o thereby_o give_v they_o the_o various_a agitation_n requisite_a to_o fluid_a body_n the_o metalline_a corpuscle_n of_o the_o thus_o dissolve_v vitriol_n will_v lodge_v themselves_o in_o throng_n in_o the_o small_a and_o congruous_a pore_n of_o the_o iron_n they_o be_v rub_v on_o and_o so_o give_v the_o surface_n of_o it_o the_o genuine_a colour_n of_o the_o copper_n 25._o there_o remain_v yet_o a_o way_n pyrophilus_n to_o be_v mention_v by_o which_o a_o liquor_n may_v alter_v the_o colour_n of_o another_o body_n and_o this_o seem_v the_o most_o important_a of_o all_o because_o though_o it_o be_v name_v but_o as_o one_o yet_o it_o may_v indeed_o comprehend_v many_o and_o that_o be_v by_o associate_a the_o saline_n corpuscle_n or_o any_o other_o sort_v of_o the_o more_o rigid_a one_o of_o the_o liquor_n with_o the_o particle_n of_o the_o body_n that_o it_o be_v employ_v to_o work_n upon_o for_o these_o adventitious_a corpuscle_n associate_a themselves_o with_o the_o protuberant_a particle_n of_o the_o surface_n of_o a_o colour_a body_n must_v necessary_o alter_v their_o bigness_n and_o will_v most_o common_o alter_v their_o shape_n and_o how_o much_o the_o colour_n of_o body_n depend_v upon_o the_o bulk_n and_o figure_n of_o their_o superficial_a particle_n you_o may_v guess_v by_o this_o that_o eminent_a ancient_a philosopher_n and_o divers_a modern_n have_v think_v that_o all_o colour_n may_v in_o a_o general_a way_n be_v make_v out_o by_o these_o two_o who_o be_v diversify_v will_v in_o our_o case_n be_v attend_v with_o these_o two_o circumstance_n the_o one_o that_o the_o protuberant_a particle_n be_v increase_v in_o bulk_n they_o will_v oftentimes_o be_v vary_v as_o to_o the_o closeness_n or_o laxity_n of_o their_o order_n few_o of_o they_o be_v contain_v within_o the_o same_o sensible_n though_o minute_n space_n than_o before_o or_o else_o by_o approach_v to_o one_o another_o they_o must_v straighten_v the_o pore_n and_o it_o may_v be_v too_o they_o will_v by_o their_o manner_n of_o associate_a themselves_o with_o the_o protuberant_a particle_n intercept_v new_a pore_n and_o this_o invite_v i_o to_o consider_v far_o that_o the_o adventitious_a corpuscle_n i_o have_v be_v speak_v of_o may_v likewise_o produce_v a_o great_a change_n as_o well_o in_o the_o little_a cavity_n or_o pore_n as_o in_o the_o protuberance_n of_o a_o colour_a body_n for_o beside_o what_o we_o have_v just_a now_o take_v notice_n of_o they_o may_v by_o lodging_n themselves_o in_o those_o little_a cavity_n fill_v they_o up_o and_o it_o may_v well_o happen_v that_o they_o may_v not_o only_o fill_v the_o pore_n they_o insinuate_v themselves_o into_o but_o likewise_o have_v their_o upper_a part_n extant_a above_o they_o and_o partly_o by_o these_o new_a protuberance_n partly_o by_o increase_v the_o bulk_n of_o the_o former_a these_o extraneous_a corpuscle_n may_v much_o alter_v the_o number_n and_o bigness_n of_o the_o surfaces_n pore_n change_v the_o old_a and_o intercept_n new_a one_o and_o then_o it_o be_v odds_o but_o the_o order_n of_o the_o little_a extancy_n and_o consequent_o that_o of_o the_o little_a depression_n in_o point_n of_o situation_n will_v be_v alter_v likewise_o as_o if_o you_o dissolve_v quicksilver_n in_o some_o kind_n of_o aquafortis_n the_o saline_n particle_n of_o the_o menstruum_fw-la associate_a themselves_o with_o the_o mercurial_a corpuscle_n will_v make_v a_o green_a solution_n which_o afterward_o easy_o enough_o degenerate_v and_o red_a lead_n or_o minium_n be_v dissolve_v in_o spirit_n of_o 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be_v precipitate_v by_o alcaliz_n at_o salt_n that_o have_v not_o first_o be_v dissolve_v in_o some_o acid_n menstruum_n yet_o i_o have_v find_v upon_o trial_n which_o my_o conjecture_n lead_v i_o to_o make_v on_o purpose_n that_o divers_a vegetable_n bare_o infuse_v or_o but_o slight_o decoct_v in_o common_a water_n will_v upon_o the_o affusion_n of_o a_o strong_a and_o clear_a lixivium_n of_o potash_n and_o much_o more_o of_o some_o other_o praecipitate_v liquor_n that_o i_o sometime_o employ_v afford_v good_a store_n of_o a_o curdle_a matter_n such_o as_o i_o have_v have_v in_o the_o praecipitation_n of_o vegetable_a substance_n by_o the_o intervention_n of_o acid_n thing_n and_o that_o this_o matter_n be_v easy_o separable_a from_o the_o rest_n of_o the_o liquor_n be_v leave_v behind_o by_o it_o in_o the_o filtre_n and_o in_o make_v the_o first_o ink_n mention_v in_o this_o experiment_n i_o find_v that_o i_o can_v by_o filtration_n separate_v pretty_a store_n of_o a_o very_a 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you_o in_o mind_n of_o the_o three_o experiment_n about_o make_v black_a liquor_n or_o ink_n of_o body_n that_o be_v none_o of_o they_o black_a before_o for_o how_o can_v it_o be_v say_v that_o when_o those_o liquor_n be_v put_v together_o actual_o cold_a and_o continne_v so_o after_o their_o mixture_n there_o intervene_v any_o new_a adustion_n of_o sulphur_n to_o produce_v the_o emergent_a blackness_n and_o the_o same_o question_n will_v be_v appliable_a to_o the_o blackness_n produce_v upon_o the_o blade_n of_o a_o knife_n that_o have_v cut_v lemmons_n and_o some_o kind_n of_o sour_a apple_n if_o the_o juice_n though_o both_o actual_o and_o potential_o cold_a be_v not_o quick_o wipe_v of_o and_o when_o by_o the_o instil_a either_o of_o a_o few_o drop_n of_o oil_n of_o vitriol_n as_o in_o the_o second_o experiment_n or_o of_o a_o little_a of_o the_o liquor_n mention_v in_o the_o passage_n point_v at_o in_o the_o four_o experiment_n where_o i_o teach_v at_o once_o to_o destroy_v one_o 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that_o syrup_n as_o to_o change_v it_o into_o a_o red_a or_o reddish_n colour_n and_o to_o confirm_v that_o for_o which_o i_o allege_v the_o former_a experiment_n i_o shall_v add_v this_o other_o that_o have_v make_v a_o very_a strong_a and_o high-coloured_a solution_n of_o file_n of_o copper_n with_o spirit_n of_o urine_n though_o the_o menstruum_fw-la seem_v glut_v with_o the_o metal_n because_o i_o put_v in_o so_o much_o file_n that_o many_o of_o they_o remain_v for_o divers_a day_n undissolved_a at_o the_o bottom_n yet_o have_v put_v three_o or_o four_o drop_n of_o syrup_n of_o violet_n upon_o white_a paper_n i_o find_v that_o the_o deep_a blue_a solution_n proportionable_o mingle_v with_o this_o other_o blue_a liquor_n do_v not_o make_v a_o blue_a mixture_n but_o as_o i_o expect_v a_o fair_a green_n upon_o the_o account_n of_o the_o urinous_a salt_n that_o be_v in_o the_o menstruum_fw-la experiment_n xix_o to_o show_v the_o chemist_n that_o colour_n may_v be_v make_v to_o appear_v 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salt_n i_o have_v employ_v as_o the_o solution_n of_o salt_n of_o tartar_n of_o pot-ash_n of_o common_a wood-ash_n limewater_n etc._n etc._n will_v immediate_o change_v the_o blue_a syrup_n into_o a_o perfect_a green_n and_o by_o the_o same_o way_n to_o hint_n that_o upon_o the_o by_o i_o elsewhere_o show_v you_o both_o the_o change_v that_o nature_n and_o time_n produce_v in_o the_o more_o saline_n part_n of_o some_o body_n may_v be_v discover_v and_o also_o how_o even_o such_o chemical_o prepare_v body_n as_o belong_v not_o either_o to_o the_o animal_n kingdom_n or_o to_o the_o tribe_n of_o alcali_n may_v have_v their_o new_a and_o superinduce_v nature_n successful_o examine_v in_o this_o place_n i_o shall_v only_o add_v that_o not_o alone_o the_o change_a the_o colour_n of_o the_o syrup_n require_v that_o the_o change_a body_n be_v more_o strong_a of_o the_o acid_n or_o other_o sort_n of_o salt_n that_o be_v predominant_a in_o it_o than_o be_v requisite_a for_o the_o work_n upon_o 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in_o fair_a water_n and_o thereby_o imbue_v sufficient_o that_o liquor_n with_o that_o colour_n a_o lixiviate_v liquor_n and_o a_o urinous_a salt_n be_v copious_o pour_v upon_o distinct_a parcel_n of_o it_o do_v each_o of_o they_o though_o perhaps_o with_o some_o difference_n turn_v the_o liquor_n not_o green_a but_o of_o a_o deep_a yellowish_a colour_n almost_o like_o that_o of_o yellow_a ochre_n which_o colour_n the_o precipitate_v corpuscle_n retain_v when_o they_o have_v leisurely_o subside_v to_o the_o bottom_n what_o this_o precipitate_v substance_n be_v it_o be_v not_o needful_a now_o to_o inquire_v in_o this_o place_n and_o in_o another_o i_o have_v show_v you_o that_o notwithstanding_o its_o colour_n and_o its_o be_v obtainable_a from_o a_o acid_n menstruum_fw-la by_o the_o help_n of_o salt_n of_o tartar_n it_o be_v yet_o far_o enough_o from_o be_v the_o true_a sulphur_n of_o vitriol_n experiment_n xxii_o our_o next_o experiment_n pyrophilus_n will_v perhaps_o seem_v to_o be_v of_o a_o contrary_a nature_n to_o the_o two_o former_a make_v upon_o syrup_n of_o violet_n and_o juice_n of_o blew-bottle_n for_o as_o in_o they_o by_o the_o affusion_n of_o oil_n of_o tartar_n a_o bluish_a liquor_n be_v make_v green_a so_o in_o this_o by_o the_o sole_a mixture_n of_o the_o same_o oil_n a_o greenish_a liquor_n become_v blue_a the_o hint_n of_o this_o experiment_n be_v give_v we_o by_o the_o practice_n of_o some_o italian_a painter_n who_o be_v wont_n to_o counterfeit_n ultra-marine_a azure_a as_o they_o call_v it_o by_o grind_v verdigrease_n with_o salarmoniack_a and_o some_o other_o saline_n ingredient_n and_o let_v they_o rot_v as_o they_o imagine_v for_o a_o good_a while_n together_o in_o a_o dunghill_n we_o suppose_v that_o the_o change_n of_o colour_n wrought_v in_o the_o verdigrease_n by_o this_o way_n of_o preparation_n must_v proceed_v from_o the_o action_n of_o certain_a volatile_a and_o alcalizate_a salt_n abound_v in_o some_o of_o the_o mingle_a concretes_n and_o bring_v to_o make_v a_o further_a dissolution_n of_o the_o copper_n abound_v in_o the_o verdigrease_n and_o therefore_o we_o conjecture_v that_o if_o both_o the_o verdigrease_n and_o such_o salt_n be_v dissolve_v in_o fair_a water_n the_o small_a part_n of_o both_o be_v therein_o more_o subdivide_v and_o set_v at_o liberty_n will_v have_v better_a access_n to_o each_o other_o and_o thereby_o incorporate_v much_o the_o more_o sudden_o and_o according_o we_o find_v that_o if_o upon_o a_o strong_a solution_n of_o good_a french_a verdigrease_n for_o it_o be_v that_o we_o be_v wont_n to_o employ_v as_o the_o best_a you_o pour_v a_o just_a quantity_n of_o oil_n of_o tartar_n and_o shake_v they_o well_o together_o you_o shall_v immediate_o see_v a_o notable_a change_n of_o colour_n and_o the_o mixture_n will_v grow_v thick_a and_o not_o transparent_a but_o if_o you_o stay_v a_o while_n till_o the_o grosser_n part_n be_v precipitate_v to_o and_o settle_v in_o the_o bottom_n you_o may_v obtain_v a_o clear_a liquor_n of_o a_o very_a lovely_a colour_n and_o exceed_v delightful_a to_o the_o eye_n but_o you_o must_v have_v a_o care_n to_o drop_v in_o a_o competent_a quantity_n of_o oil_n of_o tartar_n for_o else_o the_o colour_n will_v not_o be_v so_o deep_a and_o rich_a and_o if_o instead_o of_o this_o oil_n you_o employ_v a_o clear_a lixivium_n of_o pot-ash_n you_o may_v have_v a_o azure_a somewhat_o light_a or_o pale_a than_o and_o therefore_o differ_v from_o the_o former_a and_o if_o instead_o of_o either_o of_o these_o liquor_n you_o make_v use_v of_o spirit_n of_o urine_n or_o of_o hartshorn_n you_o may_v according_a to_o the_o quantity_n and_o quality_n of_o the_o spirit_n you_o pour_v in_o obtain_v some_o further_a variety_n though_o scarce_o considerable_a of_o caeruleous_a liquor_n and_o yet_o late_o by_o the_o help_n of_o this_o urinous_a spirit_n we_o make_v
a_o blue_a liquor_n which_o not_o a_o few_o ingenious_a person_n and_o among_o they_o some_z who_o profession_n make_v they_o very_o conversant_a with_o colour_n have_v look_v upon_o with_o some_o wonder_n but_o these_o azure_a colour_a liquor_n shall_v be_v free_v from_o the_o subside_v matter_n which_o the_o salt_n of_o tartar_n or_o urine_n precipitate_v out_o of_o they_o rather_o by_o be_v decant_v than_o by_o filtration_n for_o by_o the_o latter_a of_o these_o way_n we_o have_v sometime_o find_v the_o colour_n of_o they_o very_o much_o impair_v and_o little_a superior_a to_o that_o of_o the_o grosser_n substance_n that_o it_o leave_v in_o the_o filtre_n experiment_n xxiii_o that_o rose_n hold_v over_o the_o fume_v of_o sulphur_n may_v quick_o by_o it_o be_v deprive_v of_o their_o colour_n and_o have_v as_o much_o of_o their_o leave_n as_o the_o fume_v work_n upon_o burn_v pale_a be_v a_o experiment_n that_o divers_a other_o have_v try_v as_o well_o as_o i._o but_o pyrophilus_n 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little_a heat_v upon_o the_o fire_n and_o some_o beat_a allom_n put_v unto_o they_o and_o afterward_o press_v forth_o the_o juice_n or_o liquor_n be_v usual_o put_v in_o great_a bladder_n tie_v with_o strong_a thread_n at_o the_o head_n and_o hang_v up_o until_o it_o be_v dry_a which_o be_v dissolve_v in_o water_n or_o wine_n but_o sack_n he_o affirm_v be_v the_o best_a to_o preserve_v the_o colour_n from_o starve_v as_o they_o call_v it_o that_o be_v from_o decay_v and_o make_v it_o hold_v fresh_a the_o long_o the_o three_o colour_n where_o of_o none_o say_v he_o that_o i_o can_v find_v have_v make_v mention_n but_o only_a tragus_n be_v a_o purplish_a colour_n which_o be_v make_v of_o the_o berry_n suffer_v to_o grow_v upon_o the_o bush_n until_o the_o middle_n or_o end_n of_o november_n that_o they_o be_v ready_a to_o drop_v from_o the_o tree_n and_o i_o remember_v pyrophilus_n that_o i_o try_v with_o a_o success_n that_o please_v i_o well_o enough_o to_o make_v such_o a_o kind_n 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for_o speak_v of_o that_o plant_n he_o tell_v we_o that_o the_o portugall_n use_v the_o bark_n to_o die_v their_o net_n into_o a_o red_a colour_n and_o with_o the_o chip_n of_o the_o wood_n which_o be_v whitish_a they_o dye_v a_o blackish_a blue_n experiment_n xxx_o among_o the_o experiment_n that_o tend_v to_o show_v that_o the_o change_n of_o colour_n in_o body_n may_v proceed_v from_o the_o varied_a texture_n of_o their_o part_n and_o the_o consequent_a change_n of_o their_o disposition_n to_o reflect_v or_o refract_v the_o light_n that_o sort_n of_o experiment_n must_v not_o be_v leave_v unmentioned_a which_o be_v afford_v we_o by_o chemical_a digestion_n for_o if_o chemist_n will_v believe_v several_a famous_a writer_n about_o what_o they_o call_v the_o philosopher_n stone_n they_o must_v acknowledge_v that_o the_o same_o matter_n seal_v up_o hermetical_o in_o a_o philosophical_a egg_n will_v by_o the_o continuance_n of_o digestion_n or_o if_o they_o will_v have_v it_o so_o for_o it_o be_v not_o material_a in_o our_o case_n which_o of_o the_o two_o it_o be_v of_o decoction_n run_v through_o a_o great_a variety_n of_o differ_v colour_n before_o it_o come_v to_o that_o of_o the_o noble_a elixir_n whether_o that_o be_v scarlet_a or_o purple_a or_o what_o ever_o other_o kind_a of_o red._n but_o without_o build_v any_o thing_n on_o so_o obtruse_a and_o questionable_a a_o operation_n which_o yet_o may_v be_v pertinent_o represent_v to_o those_o that_o believe_v the_o thing_n we_o may_v observe_v that_o divers_a body_n digest_v in_o carefully-closed_a vessel_n will_v in_o tract_n of_o time_n change_v their_o colour_n as_o i_o have_v elsewhere_o mention_v my_o have_v observe_v even_o in_o rectify_v spirit_n of_o hartshorn_n and_o as_o be_v evident_a in_o the_o precipitation_n of_o amalgam_n of_o gold_n and_o mercury_n without_o addition_n where_o by_o the_o continuance_n of_o a_o due_a heat_n the_o silver-coloured_a amalgam_n be_v reduce_v into_o a_o shine_a red_a powder_n further_a instance_n of_o this_o kind_a you_o may_v find_v here_o and_o there_o in_o divers_a place_n of_o my_o other_o essay_n and_o indeed_o it_o have_v be_v a_o thing_n that_o have_v much_o contribute_v to_o deceive_v many_o chemist_n that_o there_o be_v more_o body_n than_o one_o which_o by_o digestion_n will_v be_v bring_v to_o exhibit_v that_o variety_n and_o succession_n of_o colour_n which_o they_o imagine_v to_o be_v peculiar_a to_o what_o they_o call_v the_o true_a matter_n of_o the_o philosopher_n but_o concern_v this_o i_o shall_v refer_v you_o to_o what_o you_o may_v elsewhere_o find_v in_o the_o discourse_n write_v touch_v the_o passive_a deception_n of_o chemist_n and_o more_o about_o the_o production_n of_o colour_n by_o digestion_n you_o will_v meet_v with_o present_o wherefore_o i_o shall_v now_o make_v only_o this_o observation_n from_o what_o have_v be_v deliver_v that_o in_o these_o operation_n there_o appear_v not_o any_o cause_n to_o attribute_v the_o new_a colour_n emergent_a to_o the_o action_n of_o a_o new_a substantial_a form_n nor_o to_o any_o increase_n or_o decrement_n of_o either_o the_o salt_n sulphur_n or_o mercury_n of_o the_o matter_n that_o acquire_v new_a colour_n for_o the_o vessel_n be_v close_v and_o these_o principle_n according_a to_o the_o chemist_n be_v ingenerable_a and_o incorruptible_a so_o that_o the_o effect_n seem_v to_o proceed_v from_o hence_o that_o the_o heat_n agitate_v and_o shuffle_n the_o corpuscle_n of_o the_o body_n expose_v to_o it_o do_v improcess_n of_o time_n so_o change_v its_o texture_n as_o that_o the_o transpose_v part_n do_v modify_v the_o incident_a light_n otherwise_o than_o they_o do_v when_o the_o matter_n appear_v of_o another_o colour_n experiment_n xxxi_o among_o the_o several_a change_n of_o colour_n which_o body_n acquire_v or_o disclose_v by_o digestion_n it_o it_o very_o remarkable_a that_o chemist_n find_v a_o redness_n rather_o than_o any_o other_o colour_n in_o most_o of_o the_o tincture_n they_o draw_v and_o even_o in_o the_o more_o gross_a solution_n they_o make_v of_o almost_o all_o concretes_n that_o abound_v either_o with_o mineral_n or_o vegetable_a sulphur_n though_o the_o menstruum_fw-la employ_v about_o these_o solution_n or_o tincture_n be_v never_o so_o limpid_a or_o colourless_a this_o we_o have_v observe_v in_o i_o know_v not_o how_o many_o tincture_n draw_v with_o spirit_n of_o wine_n from_o jalap_n guaicum_fw-la and_o several_a other_o vegetable_n and_o not_o only_o in_o the_o solution_n of_o amber_n benzoin_v and_o divers_a other_o concretes_n make_v with_o the_o same_o menstruum_fw-la but_o also_o in_o divers_a mineral_n tincture_n and_o not_o to_o urge_v that_o familiar_a instance_n of_o the_o ruby_n of_o sulphur_n as_o chemist_n upon_o the_o score_n of_o its_o colour_n call_v the_o solution_n of_o flower_n of_o brimstone_n make_v with_o the_o spirit_n of_o turpentine_n nor_o to_o take_v notice_n of_o other_o more_o know_v example_n of_o the_o aptness_n of_o chemical_a oil_n to_o produce_v a_o red_a colour_n with_o the_o sulphur_n they_o extract_v or_o dissolve_v not_o to_o insist_v i_o say_v upon_o instance_n of_o this_o nature_n i_o shall_v further_o represent_v to_o you_o as_o a_o thing_n remarkable_a that_o both_o acid_n and_o alcalizate_a salt_n though_o in_o most_o other_o case_n of_o such_o contrary_a operation_n in_o reference_n to_o colour_n will_v with_o many_o body_n that_o abound_v with_o sulphureous_a or_o with_o oily_a part_n produce_v a_o red_a as_o be_v manifest_a partly_o in_o the_o more_o vulgar_a instance_n of_o the_o tincture_n or_o solution_n of_o sulphur_n make_v with_o lixivium_n either_o of_o calcine_v tartar_n or_o pot-ash_n and_o other_o obvious_a example_n partly_o by_o this_o that_o the_o true_a glass_n of_o antimony_n extract_v with_o some_o acid_n spirit_n with_o or_o without_o wine_n will_v yield_v a_o red_a tincture_n and_o that_o i_o know_v a_o acid_n liquor_n which_o in_o a_o moment_n will_v turn_v oil_n of_o turpentine_n into_o a_o deep_a red._n but_o among_o the_o many_o instance_n i_o can_v give_v you_o of_o the_o easy_a production_n of_o redness_n by_o the_o operation_n of_o saline_n spirit_n as_o well_o as_o of_o spirit_n of_o wine_n i_o remember_v two_o or_o three_o of_o those_o i_o have_v try_v which_o seem_v remarkable_a enough_o to_o deserve_v to_o be_v mention_v to_o you_o apart_o experiment_n xxxii_o but_o before_o we_o set_v they_o down_o it_o will_v not_o perhaps_o appear_v impertinent_a to_o premise_v that_o there_o seem_v to_o be_v a_o manifest_a disparity_n betwixt_o red_a liquor_n so_o that_o some_o of_o they_o may_v be_v say_v to_o have_v a_o genuine_a redness_n in_o comparison_n of_o other_o that_o have_v a_o yellowish_a redness_n for_o if_o you_o take_v for_o example_n a_o good_a tincture_n of_o chochineel_n dilute_v it_o never_o so_o much_o with_o fair_a water_n you_o will_v not_o
will_v add_v a_o experiment_n of_o our_o own_o make_v before_o we_o meet_v with_o that_o which_o though_o in_o many_o circumstance_n very_o differ_v serve_v to_o prove_v the_o same_o thing_n for_o have_v take_v of_o the_o deep_o red_a juice_n of_o buckthorn_n berry_n which_o i_o buy_v of_o the_o man_n that_o use_v to_o sell_v it_o to_o the_o apothecary_n to_o make_v their_o syrup_n de_fw-fr spina_n cervina_fw-la i_o let_v some_o of_o it_o drop_v upon_o a_o piece_n of_o white_a paper_n and_o have_v leave_v it_o there_o for_o many_o hour_n till_o the_o paper_n be_v grow_v dry_a again_o i_o find_v what_o i_o be_v incline_v to_o suspect_v namely_o that_o this_o juice_n be_v degenerate_v from_o a_o deep_a red_a to_o a_o dirty_a kind_n of_o greyish_a colour_n which_o in_o a_o great_a part_n of_o the_o stain_a paper_n seem_v not_o to_o have_v so_o much_o as_o a_o eye_n of_o red_a though_o a_o little_a spirit_n of_o salt_n or_o dissolve_v alcaly_a will_v turn_v this_o unpleasant_a colour_n as_o former_o i_o tell_v you_o it_o will_v change_v the_o not_o yet_o alter_v juice_n into_o a_o red_a or_o green_n and_o to_o satisfy_v myself_o that_o this_o degeneration_n of_o colour_n do_v not_o proceed_v from_o the_o paper_n i_o drop_v some_o of_o the_o deep_a red_a or_o crimson_a juice_n upon_o a_o white_a glaze_v tile_n and_o suffer_v it_o to_o dry_v on_o there_o i_o find_v that_o even_o in_o that_o body_n on_o which_o it_o can_v not_o soak_v and_o by_o which_o it_o can_v not_o be_v wrought_v it_o nevertheless_o lose_v its_o colour_n and_o these_o instance_n pyrophilus_n i_o be_o the_o more_o careful_a to_o mention_v to_o you_o that_o you_o may_v not_o be_v much_o surprise_v or_o discourage_v if_o you_o shall_v sometime_o miss_v of_o perform_v punctual_o what_o i_o affirm_v myself_o to_o have_v do_v in_o point_n of_o change_a colour_n since_o in_o these_o experiment_n the_o oversight_n or_o neglect_n of_o such_o little_a circumstance_n as_o in_o many_o other_o will_v not_o be_v perhaps_o considerable_a may_v occasion_v the_o miscarrying_a of_o a_o trial._n and_o i_o be_v willing_a also_o to_o take_v this_o occasion_n of_o advertise_v you_o in_o the_o repeat_n of_o the_o experiment_n mention_v in_o this_o treatise_n to_o make_v use_n of_o the_o juice_n of_o vegetable_n and_o other_o thing_n prepare_v for_o your_o trial_n as_o soon_o as_o ever_o they_o be_v ready_a lest_o one_o or_o other_o of_o they_o grow_v less_o fit_a if_o not_o quite_o unfit_a by_o delay_n and_o to_o estimate_v the_o event_n of_o the_o trial_n by_o the_o change_n that_o be_v produce_v present_o upon_o the_o due_a and_o sufficient_a application_n of_o active_n to_o passive_n as_o they_o speak_v because_o in_o many_o case_n the_o effect_n of_o such_o mixture_n may_v not_o be_v last_v and_o the_o new_o produce_v colour_n may_v in_o a_o little_a time_n degenerate_a but_o pyrophilus_n i_o forget_v to_o add_v to_o the_o two_o former_a observation_n late_o make_v about_o vegetable_n a_o three_o of_o the_o same_o import_n make_v in_o mineral_n substance_n by_o tell_v you_o that_o the_o better_a to_o satisfy_v a_o friend_n or_o two_o in_o this_o particular_a i_o sometime_o make_v according_a to_o some_o conjecture_n of_o i_o this_o experiment_n that_o have_v dissolve_v good_a silver_n in_o aquafortis_n and_o precipitate_v it_o with_o spirit_n of_o salt_n upon_o the_o first_o decant_v of_o the_o liquor_n the_o remain_a matter_n will_v be_v pure_o white_a but_o after_o it_o have_v lie_v a_o while_n uncover_v that_o part_n of_o it_o that_o be_v contiguous_a to_o the_o air_n will_v not_o only_o lose_v its_o whiteness_n but_o appear_v of_o a_o very_a dark_a and_o almost_o blackish_a colour_n i_o say_v that_o part_n that_o be_v contiguous_a to_o the_o air_n because_o if_o that_o be_v gentle_o take_v off_o the_o subjacent_a part_n of_o the_o same_o mass_n will_v appear_v very_o white_a till_o that_o also_o have_v continue_v a_o while_n expose_v to_o the_o air_n will_v likewise_o degenerate_a now_o whether_o the_o air_n perform_v these_o thing_n by_o the_o mean_n of_o a_o subtle_a salt_n which_o we_o elsewhere_o show_v it_o not_o to_o be_v destitute_a of_o or_o by_o a_o pierce_a moisture_n that_o be_v apt_a easy_o to_o insinuate_v itself_o into_o the_o pore_n of_o some_o body_n and_o thereby_o change_v their_o texture_n and_o so_o their_o colour_n or_o by_o solicit_v the_o avolation_n of_o certain_a part_n of_o the_o body_n to_o which_o it_o be_v contiguous_a or_o by_o some_o other_o way_n which_o possible_o i_o may_v elsewhere_o propose_v and_o consider_v i_o have_v not_o now_o the_o leisure_n to_o discourse_v and_o for_o the_o same_o reason_n though_o i_o can_v add_v many_o other_o instance_n of_o what_o i_o former_o note_v touch_v the_o emergency_n of_o redness_n upon_o the_o digestion_n of_o many_o body_n insomuch_o that_o i_o have_v often_o see_v upon_o the_o border_n of_o france_n and_o probable_o we_o may_v have_v the_o like_a in_o england_n a_o sort_n of_o pear_n which_o digest_v for_o some_o time_n with_o a_o little_a wine_n in_o a_o vessel_n exact_o close_v will_v in_o not_o many_o hour_n appear_v throughout_o of_o a_o deep_a red_a colour_n as_o also_o that_o of_o the_o juice_n wherein_o they_o be_v stew_v become_v but_o even_o on_o pure_a and_o white_a salt_n of_o tartar_n pure_a spirit_n of_o wine_n as_o clear_a as_o rock-water_n will_v as_o we_o elsewhere_o declare_v by_o long_a digestion_n acquire_v a_o redness_n though_o i_o say_v such_o instance_n may_v be_v multiply_v and_o though_o there_o be_v some_o other_o obvious_a change_n of_o colour_n which_o happen_v so_o frequent_o that_o they_o can_v but_o be_v as_o well_o considerable_a as_o notorious_a such_o as_o be_v the_o blackness_n of_o almost_o all_o body_n burn_v in_o the_o open_a air_n yet_o our_o haste_n invite_v we_o to_o resign_v you_o the_o exercise_n of_o inquire_v into_o the_o cause_n of_o these_o change_n and_o certain_o the_o reason_n both_o why_o the_o soot_v of_o such_o differ_a body_n be_v almost_o all_o of_o they_o all_o black_a why_o so_o much_o the_o great_a part_n of_o vegetable_n shall_v be_v rather_o green_a than_o of_o any_o other_o colour_n and_o particular_o which_o more_o direct_o concern_v this_o place_n why_o gentle_a heat_n do_v so_o frequent_o in_o chemical_a operation_n produce_v rather_o a_o redness_n than_o another_o colour_n in_o digest_v menstruum_n not_o only_o sulphureous_a as_o spirit_n of_o wine_n but_o saline_n as_o spirit_n of_o vinegar_n may_v be_v very_o well_o worth_a a_o serious_a inquiry_n which_o i_o shall_v therefore_o recommend_v to_o pyrophilus_n and_o his_o ingenious_a friend_n experiment_n xxxvii_o it_o may_v seem_v somewhat_o strange_a that_o if_o you_o take_v the_o crimson_a solution_n of_o cochineel_n or_o the_o juice_n of_o black_a cherry_n and_o of_o some_o other_o vegetable_n that_o afford_v the_o like_a colour_n which_o because_o many_o take_v but_o for_o a_o deep_a red_a we_o do_v with_o they_o sometime_o call_v it_o so_o and_o let_v some_o of_o it_o fall_v upon_o a_o piece_n of_o paper_n a_o drop_n or_o two_o of_o a_o acid_n spirit_n such_o as_o spirit_n of_o salt_n or_o aquafortis_n will_v immediate_o turn_v it_o into_o a_o fair_a red._n whereas_o if_o you_o make_v a_o infusion_n of_o brazil_n in_o fair_a water_n and_o drop_v a_o little_a spirit_n of_o salt_n or_o aquafortis_n into_o it_o that_o will_v destroy_v its_o redness_n and_o leave_v the_o liquor_n of_o a_o yellow_a sometime_o pale_a i_o may_v perhaps_o plausible_o enough_o say_v on_o this_o occasion_n that_o if_o we_o consider_v the_o case_n a_o little_a more_o attentive_o we_o may_v take_v notice_n that_o the_o action_n of_o the_o acid_n spirit_n seem_v in_o both_o case_n but_o to_o weaken_v the_o colour_n of_o the_o liquor_n on_o which_o it_o fall_v and_o so_o though_o it_o destroy_v redness_n in_o the_o tincture_n of_o brazil_n as_o well_o as_o produce_v red_a in_o the_o tincture_n of_o chochineel_n its_o operation_n may_v be_v uniform_a enough_o since_o as_o crimson_a seem_v to_o be_v little_a else_o than_o a_o very_a deep_a red_a with_o perhaps_o a_o eye_n of_o blue_n so_o some_o kind_n of_o red_a seem_v as_o i_o have_v late_o note_v to_o be_v little_a else_o than_o heighten_v yellow_a and_o consequent_o in_o such_o body_n the_o yellow_a seem_v to_o be_v but_o a_o diluted_a red._n and_o according_o alcalizate_a solution_n and_o urinous_a spirit_n which_o seem_v dispose_v to_o deepen_v the_o colour_n of_o the_o juice_n and_o liquor_n of_o most_o vegetable_n will_v not_o only_o restore_v the_o solution_n of_o cochineel_n and_o the_o infusion_n of_o brazil_n to_o the_o crimson_a whence_o the_o spirit_n of_o salt_n have_v change_v they_o into_o a_o true_a red_a but_o will_v also_o as_o i_o late_o tell_v you_o not_o
only_o heighten_v the_o yellow_a juice_n of_o mad_a into_o red_a but_o advance_v the_o red_a infusion_n of_o brazil_n to_o a_o crimson_a but_o i_o know_v not_o whether_o it_o will_v not_o be_v much_o safe_a to_o derive_v these_o change_n from_o varied_a texture_n than_o certain_a kind_n of_o body_n and_o you_o will_v perhaps_o think_v it_o worth_a while_n that_o i_o shall_v add_v on_o this_o occasion_n that_o it_o may_v deserve_v some_o speculation_n why_o notwithstanding_o what_o we_o have_v be_v observe_v though_o blow_v and_o purple_a seem_v to_o be_v deep_a colour_n than_o red_a and_o therefore_o the_o juice_n of_o plant_n of_o either_o of_o the_o two_o former_a colour_n may_v congruous_o enough_o to_o what_o have_v be_v just_a now_o note_v be_v turn_v red_a by_o spirit_n of_o salt_n or_o aquafortis_n yet_o blow_v syrup_n of_o violet_n and_o some_o purple_n shall_v both_o by_o oil_n of_o tartar_n and_o spirit_n of_o urine_n be_v change_v into_o green_n which_o seem_v to_o be_v 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