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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
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 of_o pigment_n as_o painter_n call_v sap-green_n by_o a_o way_n not_o unlike_o that_o deliver_v here_o by_o our_o author_n but_o i_o can_v now_o find_v any_o thing_n relate_v to_o that_o matter_n among_o my_o loose_a paper_n and_o my_o trial_n be_v make_v so_o many_o year_n ago_o that_o i_o dare_v not_o trust_v my_o memory_n for_o circumstance_n but_o will_v rather_o tell_v you_o that_o in_o a_o note_a colour-shop_n i_o bring_v they_o by_o question_n to_o confess_v to_o i_o that_o they_o make_v their_o sap-green_n much_o after_o the_o way_n by_o our_o botanist_n here_o mention_v and_o on_o this_o occasion_n i_o shall_v add_v a_o observation_n which_o though_o it_o do_v not_o strict_o belong_v to_o this_o place_n may_v well_o enough_o be_v mention_v here_o namely_o that_o i_o find_v by_o a_o account_n give_v we_o by_o the_o learned_a clusius_n of_o alaternus_n that_o even_o the_o grosser_n part_n of_o the_o same_o plant_n be_v some_o of_o they_o one_o colour_n and_o some_o another_o 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
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 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you_o take_v a_o piece_n of_o good_a dantzick_n copperis_n or_o any_o other_o vitriol_n wherein_o venus_n be_v predominant_a and_o have_v moisten_v it_o in_o your_o mouth_n or_o with_o fair_a water_n rub_v it_o upon_o a_o whet_v knife_n or_o any_o other_o bright_a piece_n of_o steel_n or_o iron_n it_o will_v as_o we_o have_v former_o tell_v you_o present_o stain_v the_o steel_n with_o a_o reddish_n colour_n like_o that_o of_o copper_n the_o reason_n of_o which_o we_o must_v not_o now_o stay_v to_o inquire_v annotation_n i._n i_o presume_v you_o may_v have_v take_v notice_n pyrophilus_n that_o i_o have_v borrow_v some_o of_o the_o instance_n mention_v in_o this_o 47_o experiment_n from_o the_o laboratory_n of_o chemist_n and_o because_o in_o some_o though_o very_o few_o other_o passage_n of_o this_o essay_n i_o have_v likewise_o make_v use_n of_o experiment_n mention_v also_o by_o some_o spagyrical_a writer_n i_o think_v it_o not_o amiss_o to_o represent_v to_o you_o on_o this_o 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three_o of_o ting_a glass_n with_o mineral_n substance_n and_o of_o try_v what_o metal_n they_o contain_v by_o this_o mean_n from_o 360_o to_o 362._o annotation_n the_o four_o that_o metal_n may_v be_v tinge_v by_o mineral_n 362_o 363._o annotation_n the_o five_o of_o make_v several_a kind_n of_o amause_n or_o counterfeit_n stone_n from_o 363_o to_o 365._o annotation_n the_o six_o of_o the_o scarlet_a dye_n of_o the_o stain_n of_o dissolve_v gold_n and_o silver_n 366_o 367._o of_o the_o greenness_n of_o salt_n beef_n and_o redness_n of_o neat_n tongue_n from_o salt_n of_o gild_v silver_n with_o bath_n water_n 368_o 369._o and_o ting_v the_o nail_n and_o skin_n with_o alcanna_n 369_o the_o forty_o nine_o experiment_n of_o make_v lake_n 369._o a_o particular_a example_n in_o turmerick_n 370_o 371._o annotation_n the_o first_o that_o in_o precipitation_n wherein_o alum_n be_v a_o coefficient_a a_o great_a part_n of_o they_o may_v consist_v of_o the_o stony_a particle_n of_o that_o 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a_o narrow_a compass_n and_o though_o each_o of_o these_o shall_v not_o be_v of_o a_o figure_n convenient_a to_o reflect_v a_o round_a image_n of_o the_o sun_n yet_o even_o from_o such_o a_o inconvenient_o figure_v body_n there_o may_v be_v reflect_v some_o either_o straight_a or_o crooked_a physical_a line_n of_o light_n which_o line_n i_o call_v physical_a because_o it_o have_v some_o breadth_n in_o it_o and_o in_o which_o line_n in_o many_o case_n some_o refraction_n of_o the_o light_n fall_v upon_o the_o body_n it_o depend_v on_o may_v contribute_v to_o the_o brightness_n as_o if_o a_o slender_n wire_n or_o solid_a cylinder_n of_o glass_n be_v expose_v to_o the_o light_n you_o shall_v see_v in_o some_o part_n of_o it_o a_o vivid_n line_n of_o light_n and_o if_o we_o be_v able_a to_o draw_v out_o and_o lay_v together_o a_o multitude_n of_o these_o little_a wire_n or_o
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have_v purposely_o inquire_v of_o a_o experience_a stone-cutter_n who_o be_v curious_a enough_o in_o try_v conclusion_n in_o his_o own_o trade_n he_o tell_v i_o he_o have_v find_v that_o if_o alabaster_n or_o plaster_n of_o paris_n be_v very_o long_o keep_v in_o a_o strong_a fire_n the_o whole_a heap_n of_o burn_a powder_n will_v exchange_v its_o whiteness_n for_o a_o much_o deep_a colour_n than_o the_o yellow_a i_o observe_v lead_v be_v calcine_v with_o a_o strong_a fire_n turn_v after_o have_v perhaps_o run_v through_o divers_a other_o colour_n into_o minium_n who_o colour_n we_o know_v be_v a_o deep_a red_a and_o if_o you_o urge_v this_o minium_n as_o i_o have_v purposely_o do_v with_o a_o strong_a fire_n you_o may_v much_o easy_o find_v a_o glassy_a and_o brittle_a body_n dark_a than_o minium_n than_o any_o white_a calx_fw-la or_o glass_n it_o be_v know_v among_o chemist_n that_o the_o white_a calx_fw-la of_o antimony_n by_o the_o further_o and_o more_o vehement_a operation_n of_o the_o fire_n may_v be_v melt_v into_o glass_n which_o we_o have_v obtain_v of_o a_o red_a colour_n which_o be_v far_o deep_a than_o that_o of_o the_o calx_fw-la of_o burn_a antimony_n and_o though_o common_a glass_n of_o antimony_n be_v usual_o adulterate_v with_o borax_n have_v its_o colour_n thereby_o dilute_v oftentimes_o to_o a_o very_a pale_a yellow_a yet_o not_o only_o we_o make_v more_o sincery_o be_v as_o we_o say_v of_o a_o colour_n less_o remote_a from_o black_a than_o be_v the_o calx_fw-la but_o we_o observe_v that_o by_o melt_v it_o once_o or_o twice_o more_o and_o so_o expose_v it_o to_o the_o further_a operation_n of_o the_o fire_n we_o have_v as_o we_o expect_v the_o colour_n heighten_v to_o which_o we_o shall_v add_v but_o this_o one_o instance_n which_o be_v worth_a the_o take_a notice_n of_o in_o reference_n to_o colour_n that_o if_o you_o take_v blue_a but_o unsophisticated_a vitriol_n and_o burn_v it_o very_o slow_o and_o with_o a_o gentle_a degree_n of_o heat_n you_o may_v observe_v that_o when_o it_o be_v burn_v but_o a_o little_a and_o yet_o so_o far_o as_o that_o you_o may_v rub_v it_o to_o powder_n betwixt_o your_o finger_n it_o will_v be_v of_o a_o white_a or_o whitish_a colour_n but_o if_o you_o prosecute_v the_o calcination_n this_o body_n which_o by_o a_o light_a adustion_n be_v make_v white_a will_v pass_v through_o other_o colour_n as_o grace_n yellowish_a and_o red_a and_o if_o you_o further_o burn_v it_o with_o a_o long_a and_o vehement_a fire_n by_o that_o time_n it_o come_v to_o be_v perustum_fw-la it_o will_v be_v of_o a_o dark_a purple_a near_o to_o black_a not_o only_o than_o the_o first_o calx_fw-la but_o than_o the_o vitriol_n before_o it_o at_o all_o feel_v the_o fire_n i_o may_v add_v that_o crocus_n martis_n per_fw-la se_fw-la as_o they_o call_v it_o make_v by_o the_o last_a violence_n of_o the_o reverberate_v flame_n be_v not_o so_o near_o a_o kin_n to_o white_a as_o the_o iron_n or_o steel_n that_o afford_v it_o be_v before_o its_o calcination_n but_o that_o i_o suppose_v these_o instance_n may_v suffice_v to_o satisfy_v you_o that_o mineral_n be_v to_o be_v except_v out_o of_o the_o forementioned_a rule_n which_o perhaps_o though_o it_o seldom_o fail_v in_o substance_n belong_v to_o the_o vegetable_a or_o animal_n kingdom_n may_v yet_o be_v question_v even_o in_o some_o of_o these_o if_o that_o be_v true_a which_o the_o judicious_a traveller_n bellonius_fw-la affirm_v that_o charcoal_n make_v out_o of_o the_o wood_n of_o oxycaeder_n be_v white_a and_o i_o can_v not_o find_v that_o though_o in_o retort_v hartshorn_n and_o other_o white_a body_n will_v be_v denigrate_v by_o heat_n yet_o camphire_n will_v not_o at_o all_o lose_v its_o whiteness_n though_o i_o have_v purposely_o keep_v it_o in_o such_o a_o heat_n as_o make_v it_o melt_v and_o boil_v and_o to_o manifest_v pyrophilus_n that_o
of_o a_o considerable_a use_n in_o the_o strike_n of_o colour_n let_v i_o add_v to_o the_o many_o experiment_n which_o may_v be_v afford_v we_o to_o this_o purpose_n by_o the_o dyer_n trade_n this_o observation_n that_o as_o far_o as_o we_o have_v hitherto_o try_v those_o liquor_n in_o general_a that_o be_v strong_a of_o acid_n salt_n have_v the_o power_n of_o destroy_v the_o blewness_n of_o the_o infusion_n of_o our_o wood_n and_o those_o liquor_n indiscriminat_o that_o abound_v with_o sulphureous_a salt_n under_o which_o i_o comprehend_v the_o urinous_a and_o volatile_a salt_n of_o animal_n substance_n and_o the_o alcalisate_n or_o fix_a salt_n that_o be_v make_v by_o incineration_n have_v the_o virtue_n of_o restore_a it_o a_o corollary_n of_o the_o ten_o experiment_n that_o this_o experiment_n pyrophilus_n may_v be_v as_o well_o useful_a as_o delightful_a to_o you_o i_o must_v mind_v you_o pyrophilus_n that_o in_o the_o new_o mention_v observation_n i_o have_v hint_v to_o you_o a_o new_a and_o easy_a way_n of_o discover_v in_o many_o liquor_n for_o i_o dare_v not_o say_v in_o all_o whether_o it_o be_v a_o acid_n or_o sulphureous_a salt_n that_o be_v predominant_a and_o that_o such_o a_o discovery_n be_v oftentimes_o of_o great_a difficulty_n and_o may_v frequent_o be_v of_o great_a use_n he_o that_o be_v not_o a_o stranger_n to_o the_o various_a property_n and_o effect_n of_o salt_n and_o of_o how_o great_a moment_n it_o be_v to_o be_v able_a to_o distinguish_v their_o tribe_n may_v ready_o conceive_v but_o to_o proceed_v to_o the_o way_n of_o try_v other_o liquor_n by_o a_o infusion_n of_o our_o wood_n take_v it_o brief_o thus_o suppose_v i_o have_v a_o mind_n to_o try_v whether_o i_o conjecture_v aright_o when_o i_o imagine_v that_o allom_n though_o it_o be_v plain_o a_o mix_v body_n do_v abound_v rather_o with_o acid_n than_o sulphureous_a salt_n to_o satisfy_v myself_o herein_o i_o turn_v my_o back_n to_o the_o light_n and_o hold_v a_o small_a vial_n full_a of_o the_o tincture_n of_o lignum_fw-la nephriticum_fw-la which_o look_v upon_o in_o that_o position_n appear_v coeruleous_a i_o drop_v into_o it_o a_o little_a of_o a_o strong_a solution_n of_o allom_n make_v in_o fair_a water_n and_o find_v upon_o the_o affusion_n and_o shake_n of_o this_o new_a liquor_n that_o the_o blewness_n former_o conspicuous_a in_o our_o tincture_n do_v present_o vanish_v i_o be_o thereby_o incite_v to_o suppose_v that_o the_o salt_n predominant_a in_o allom_n belong_v to_o the_o family_n of_o sour_a salt_n but_o if_o on_o the_o other_o side_n i_o have_v a_o mind_n to_o examine_v whether_o or_o no_o i_o right_o conceive_v that_o salt_n of_o urine_n or_o of_o hartshorn_n be_v rather_o of_o a_o saline_n sulphureous_a if_o i_o may_v so_o speak_v than_o of_o a_o acid_n nature_n i_o drop_v a_o little_a of_o the_o saline_n spirit_n of_o either_o into_o the_o nephritick_n tincture_n and_o find_v that_o the_o coeruleous_a colour_n be_v rather_o thereby_o deepn_v than_o destroy_v i_o collect_v that_o the_o salt_n which_o constitute_v these_o spirit_n be_v rather_o sulphureous_a than_o acid._n and_o to_o satisfy_v myself_o yet_o far_a in_o this_o particular_a i_o take_v a_o small_a vial_n of_o fresh_a tincture_n and_o place_v both_o it_o and_o myself_o in_o reference_n to_o the_o light_n as_o former_o i_o drop_v into_o the_o infusion_n just_a as_o much_o distil_v vinegar_n or_o other_o acid_n liquor_n as_o will_v serve_v to_o deprive_v it_o of_o its_o blewness_n which_o a_o few_o drop_n if_o the_o sour_a liquor_n be_v strong_a and_o the_o vial_n small_a will_v suffice_v to_o do_v then_o without_o change_v my_o posture_n i_o drop_v and_o shake_v into_o the_o same_o vial_n a_o small_a proportion_n of_o spirit_n of_o hartshorn_n or_o urine_n and_o find_v that_o upon_o this_o affusion_n the_o tincture_n immediate_o recover_v its_o coeruleous_a colour_n i_o be_o thereby_o confirm_v in_o my_o former_a opinion_n of_o the_o sulphureous_a nature_n of_o these_o salt_n and_o so_o whereas_o it_o be_v much_o doubt_v by_o some_o modern_a chemist_n to_o what_o sort_n of_o salt_n that_o which_o be_v predominant_a in_o quicklime_n belong_v we_o have_v be_v persuade_v to_o refer_v it_o rather_o to_o lixiviate_v than_o acid_n salt_n by_o have_v observe_v that_o though_o a_o evaporate_v infusion_n of_o it_o will_v scarce_o yield_v such_o a_o salt_n as_o ash_n and_o other_o alcalizate_a body_n be_v wont_a to_o do_v yet_o if_o we_o deprive_v our_o nephritick_n tincture_n of_o its_o blewness_n by_o just_a so_o much_o distil_v vinegar_n as_o be_v requisite_a to_o make_v that_o colour_n vanish_v the_o lixivium_n of_o quicklime_n will_v immediate_o upon_o its_o affusion_n recall_v the_o banish_a colour_n but_o not_o so_o powerful_o as_o either_o of_o the_o sulphureous_a liquor_n former_o mention_v and_o therefore_o i_o allow_v myself_o to_o guess_v at_o the_o strength_n of_o the_o liquor_n examine_v by_o this_o experiment_n by_o the_o quantity_n of_o 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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 the_o tincture_n of_o lignum_fw-la nephriticum_fw-la but_o that_o in_o this_o also_o the_o operation_n of_o the_o former_o mention_v salt_n upon_o our_o syrup_n differ_v from_o their_o operation_n upon_o our_o tincture_n that_o in_o this_o liquor_n if_o the_o caeruleous_a colour_n be_v destroy_v by_o a_o acid_n salt_n it_o may_v be_v restore_v by_o one_o that_o be_v either_o volatile_a or_o lixiviate_v whereas_o in_o syrup_n of_o violet_n though_o one_o of_o these_o contrary_a salt_n will_v destroy_v the_o action_n of_o the_o other_o yet_o neither_o of_o they_o will_v restore_v the_o syrup_n to_o its_o native_a blue_n but_o each_o of_o they_o will_v change_v it_o into_o the_o colour_n which_o itself_o do_v if_o i_o may_v so_o speak_v affect_v as_o we_o shall_v have_v occasion_n to_o show_v in_o the_o note_n on_o the_o twenty_o five_o experiment_n experiment_n xxi_o there_o be_v a_o weed_n more_o know_v to_o plowman_n than_o belove_v by_o they_o who_o flower_n from_o their_o colour_n 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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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the_o lump_n that_o yield_v they_o yet_o even_o of_o red_a benzoin_n that_o sublimed_a substance_n which_o chemist_n call_v its_o flower_n be_v wont_a to_o be_v white_a or_o whitish_a and_o to_o omit_v other_o instance_n even_o one_o and_o the_o same_o black_a mineral_n antimony_n may_v be_v make_v to_o afford_v flower_n some_o of_o they_o red_a and_o some_o grey_n and_o which_o be_v more_o strange_a some_o of_o they_o pure_o white_a and_o it_o be_v the_o prescription_n of_o some_o glassman_n by_o exquisite_o mingle_v a_o convenient_a proportion_n of_o brimstone_n salarmoniack_a and_o quicksilver_n and_o sublime_v they_o together_o to_o make_v a_o sublimate_n of_o a_o excellent_a blue_n and_o though_o have_v cause_v the_o experiment_n to_o be_v make_v we_o find_v the_o produce_v sublimate_n to_o be_v far_o from_o be_v of_o a_o lovely_a colour_n as_o be_v promise_v that_o there_o and_o there_o it_o seem_v bluish_a and_o at_o least_o be_v of_o a_o colour_n differ_v enough_o from_o 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a_o competent_a quantity_n of_o the_o abovementioned_a spirit_n of_o urine_n annotation_n this_o experiment_n may_v bring_v some_o light_n to_o and_o receive_v some_o from_o a_o couple_n of_o other_o experiment_n that_o i_o remember_v i_o have_v meet_v with_o in_o the_o ingenious_a gassendus_n animadversion_n upon_o epicurus_n philosophy_n whilst_o i_o be_v turn_v over_o the_o leave_v of_o those_o learned_a commentary_n my_o eye_n be_v too_o weak_a to_o let_v i_o read_v such_o voluminous_a book_n quite_o through_o and_o i_o the_o less_o scruple_n notwithstanding_o my_o contrary_a custom_n in_o this_o treatise_n to_o set_v down_o these_o experiment_n of_o another_o because_o i_o shall_v a_o little_a improve_v the_o latter_a of_o they_o and_o because_o by_o compare_v there_o with_o that_o which_o i_o have_v last_o recite_v we_o may_v be_v assist_v to_o conjecture_n upon_o what_o account_n it_o be_v that_o oil_n of_o vitriol_n heighten_v the_o tincture_n of_o red-rose_a leave_n since_o 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that_o we_o have_v out_o of_o he_o set_v down_o seem_v not_o to_o be_v the_o most_o eminent_a that_o may_v be_v produce_v of_o this_o truth_n for_o our_o next_o experiment_n will_v show_v the_o production_n of_o several_a colour_n out_o of_o liquor_n which_o have_v not_o any_o of_o they_o any_o such_o colour_n nor_o indeed_o any_o discernible_a one_o at_o all_o and_o whereas_o though_o our_o author_n tell_v we_o that_o there_o be_v no_o redness_n either_o in_o the_o water_n or_o the_o leave_v of_o senna_n or_o the_o oil_n of_o tartar_n and_o though_o it_o be_v true_a that_o the_o predominant_a colour_n of_o the_o leave_n of_o senna_n be_v another_o than_o red_a yet_o we_o have_v try_v that_o by_o steep_v that_o plant_n a_o night_n even_o in_o cold_a water_n it_o will_v afford_v a_o very_a deep_a yellow_a or_o reddish_n tincture_n without_o the_o help_n of_o the_o oil_n of_o tartar_n which_o seem_v to_o do_v little_o more_o than_o assist_v the_o water_n to_o extract_v more_o nimble_o 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part_n seven_o book_n 3._o chap._n sect._n 5._o purchas_n ibid._n purchas_n ibid._n in_o sin_n see_v scaliger_n exercit._n 325._o sect._n 9_o nicolaus_n monardes_n lib._n simplic_n ex_fw-la india_n allator_fw-la cap._n 27._o kircher_n art_n mag._n ducis_fw-la &_o umbrae_fw-la lib._n 1._o part_n 3._o herbarist_n be_v wont_a to_o call_v this_o plant_n cyanus_n vulgaris_fw-la minor_fw-la paracelsus_n de_fw-fr mineral_n tract_n 1._o pag._n m._n 242._o see_v parkinson_n th._n botan_n trib._n 9_o cap._n 26._o parkinson_n thea_fw-mi bot._n trib._n 4._o cap._n 12._o beguinus_n tyr._n chy._n lib._n 2o._o cap._n 13o._o libr._n 2_o â—o_o cap._n 340._o see_v the_o latter_a end_n of_o the_o fifty_o experiment_n experiment_n the_o curious_a reader_n that_o desire_v further_a information_n concern_v lake_n may_v resort_v to_o the_o seven_o book_n of_o neri_n art_n of_o glass_n english_v 6_o or_o 7_o year_n since_o the_o write_n of_o this_o 49th_o experiment_n and_o illustrate_v with_o learned_a 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quam_fw-la hispanus_n gestaral_a arbitrarentur_fw-la domum_fw-la reversus_fw-la pater_fw-la qui_fw-la tam_fw-la turpem_fw-la gemmam_fw-la gestare_fw-la sibi_fw-la indecorum_n putabat_fw-la eam_fw-la mihi_fw-la dono_fw-la that_fw-mi inquiens_fw-la quandoquidem_fw-la fili_fw-la mi_fw-mi vulgi_fw-la fama_fw-la est_fw-la turcoidem_fw-la ut_fw-la facultates_fw-la svas_fw-la exercere_fw-la possit_fw-la dono_fw-la dari_fw-la debere_fw-la tibi_fw-la eam_fw-la devoveo_fw-la ego_fw-la acceptam_fw-la gemmam_fw-la sculptori_fw-la trado_fw-la at_o gentilitia_fw-la mea_fw-la insignia_fw-la illi_fw-la quamadmodam_fw-la fieri_fw-la solet_fw-la in_fw-la jaspide_fw-la chalcedonio_fw-la aliisque_fw-la ignobilioribus_fw-la gemmis_fw-la insculper_n l._n turpe_fw-la enim_fw-la existimabam_fw-la hujusmodi_fw-la gemmâ_fw-la ornatus_fw-la gratia_fw-la dum_fw-la gratiam_fw-la nullam_fw-la haberet_fw-la uti_fw-la paret_fw-la sculptor_n redditque_fw-la gemmam_fw-la quam_fw-la gesto_fw-la pro_fw-la annulo_fw-la signatorio_n vix_fw-la per_fw-la mensem_fw-la gestaram_fw-la redit_fw-la illi_fw-la pristinus_fw-la colour_n sed_fw-la non_fw-la it_o a_o nitens_fw-la propter_fw-la sculpturam_fw-la ac_fw-la inaequalem_fw-la superficiem_fw-la miramur_fw-la omnes_fw-la gemmam_fw-la atque_fw-la id_fw-la praecipuè_fw-la quod_fw-la colour_n indy_n pulchrior_fw-la fieret_fw-la id_fw-la quià _fw-la observabam_fw-la nunquam_fw-la fere_n â—am_fw-la à _fw-la manu_fw-la deposui_fw-la ita_fw-la ut_fw-la vunc_fw-la adhuc_fw-la candem_fw-la gestem_fw-la olaus_n wormius_n in_o musae_n 18o._o pag._n 186._o musae_fw-la worm_n pag._n 99_o arte_fw-la vetratia_n lib._n 7._o cap._n 102._o 102._o these_o be_v bring_v in_o and_o read_v before_o the_o royal_a society_n the_o day_n follow_v oct._n 28._o 1663._o the_o stone_n itself_o be_v to_o be_v show_v to_o the_o royal_a society_n when_o the_o observation_n be_v deliver_v i_o be_v willing_a be_v in_o haste_n to_o omit_v the_o description_n of_o it_o which_o be_v in_o 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peculiarity_n worth_n mention_v v._o for_o it_o draw_v light_a body_n like_o amber_n jet_n and_o other_o concretes_n that_o be_v note_v to_o do_v so_o but_o its_o attractive_a power_n seem_v inferior_a to_o they_o ix_o we_o dare_v not_o hold_v it_o in_o the_o flame_n of_o a_o candle_n no_o more_o than_o put_v it_o into_o a_o naked_a fire_n for_o fear_v too_o violent_a a_o heat_n which_o have_v be_v observe_v to_o spoil_v many_o other_o precious_a stone_n shall_v vitiate_v and_o impair_v a_o jewel_n that_o be_v but_o borrow_a and_o be_v suppose_v to_o be_v the_o only_a one_o of_o its_o kind_a xv._n we_o likewise_o plunge_v it_o as_o soon_o as_o we_o have_v excite_v it_o under_o liquor_n of_o several_a sort_n as_o spirit_n of_o wine_n oil_n both_o chemical_a and_o express_v a_o acid_n spirit_n and_o as_o i_o remember_v a_o alcalizate_a solution_n and_o find_v not_o any_o of_o those_o various_a liquor_n to_o destroy_v its_o shine_v property_n xvi_o have_v find_v by_o this_o observation_n 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