feather_n there_o may_v often_o be_v see_v the_o great_a disparity_n of_o colour_n and_o so_o in_o the_o leaf_n of_o tulip_n july-flower_n and_o some_o other_o vegetable_n the_o several_a leaf_n and_o even_o the_o several_a part_n of_o the_o same_o leaf_n although_o no_o difference_n have_v be_v observe_v in_o their_o other_o property_n be_v frequent_o find_v paint_v with_o very_o different_a colour_n and_o such_o a_o variety_n we_o have_v much_o more_o admire_a in_o that_o lovely_a plant_n which_o be_v common_o and_o not_o unjust_o call_v the_o marvayl_n of_o peru_n for_o of_o divers_a score_n of_o fine_a flower_n which_o in_o its_o season_n that_o gaudy_a plant_n do_v almost_o daily_o produce_v i_o have_v scarce_o take_v notice_n of_o any_o two_o that_o be_v die_v perfect_o alike_o but_o though_o pyro_n such_o thing_n as_o these_o among_o other_o keep_v i_o from_o dare_v to_o affirm_v that_o the_o diversity_n and_o change_n of_o colour_n do_v always_o argue_v any_o great_a difference_n or_o alteration_n betwixt_o or_o in_o the_o body_n wherein_o it_o be_v to_o be_v discern_v yet_o that_o oftentimes_o the_o alteration_n of_o colour_n do_v signify_v considerable_a alteration_n in_o the_o disposition_n of_o part_n of_o body_n may_v appear_v in_o the_o extraction_n of_o tincture_n and_o divers_a other_o chemical_a operation_n wherein_o the_o change_n of_o colour_n be_v the_o chief_a and_o sometime_o the_o only_a thing_n by_o which_o the_o artist_n regulate_v his_o proceed_n and_o be_v teach_v to_o know_v when_o it_o be_v seasonable_a for_o he_o to_o leave_v off_o instance_n of_o this_o sort_n be_v more_o obvious_a in_o divers_a sort_n of_o fruit_n as_o cherry_n plum_n etc._n etc._n wherein_o according_a aâ—_n the_o vegetable_a sap_n be_v sweeten_v or_o otherwise_o ripen_v by_o pass_v from_o one_o degree_n to_o another_o of_o maturation_n the_o external_a part_n of_o the_o fruit_n pass_v likewise_o from_o one_o to_o anothor_n colour_n but_o one_o of_o the_o noble_a instance_n i_o have_v meet_v with_o of_o this_o kind_n be_v not_o so_o obvious_a and_o that_o be_v the_o way_n of_o temper_v steel_n to_o make_v graver_n drill_v spring_n and_o other_o mechanical_a instrument_n which_o we_o have_v divers_a time_n both_o make_v artificer_n practice_v in_o our_o presence_n and_o try_v ourselves_o after_o the_o follow_a manner_n first_o the_o slender_a steel_n to_o be_v temper_v be_v to_o be_v harden_v by_o heat_n as_o much_o of_o it_o as_o be_v requisite_a among_o glow_a coal_n till_o it_o be_v glow_v hot_a but_o it_o must_v not_o be_v quench_v assoon_o as_o it_o be_v take_v from_o the_o fire_n for_o that_o will_v make_v it_o too_o brittle_a and_o spoil_v it_o but_o must_v be_v hold_v over_o a_o basin_n of_o water_n till_o it_o descend_v from_o a_o white_a heat_n to_o a_o red_a one_o which_o assoon_o as_o ever_o you_o perceive_v you_o must_v immediace_o quench_v as_o much_o as_o you_o desire_v to_o harden_v in_o the_o cold_a water_n the_o steel_n thus_o harden_v will_n if_o it_o be_v good_a look_v somewhat_o white_a and_o must_v be_v make_v bright_a at_o the_o end_n that_o its_o change_n of_o colour_n may_v be_v there_o conspicuous_a and_o then_o hold_v it_o so_o in_o the_o flame_n of_o a_o candle_n that_o the_o bright_a end_n may_v be_v for_o about_o half_a a_o inch_n or_o more_o out_o of_o the_o flame_n that_o the_o smoke_n do_v not_o stain_v or_o full_o the_o brightness_n of_o it_o you_o shall_v after_o a_o while_n see_v that_o clean_a end_n which_o be_v almost_o contiguous_a to_o the_o flame_n pass_v very_o nimble_o from_o one_o colour_n to_o another_o as_o from_o a_o bright_a yellow_n to_o a_o deep_a and_o red_a yellow_a which_o artificer_n call_v a_o sanguine_a and_o from_o that_o to_o a_o faint_a first_o and_o then_o a_o a_o deep_a blue_n and_o to_o bring_v home_o this_o experiment_n to_o our_o present_a purpose_n it_o be_v find_v by_o daily_a experience_n that_o each_o of_o these_o succeed_a colour_n argue_v such_o a_o change_n make_v in_o the_o texture_n of_o the_o steel_n that_o if_o it_o be_v take_v from_o the_o flame_n and_o immediate_o quench_v in_o the_o tallow_n whereby_o it_o be_v settle_v in_o whatever_o temper_n it_o have_v before_o when_o it_o be_v yellow_a it_o be_v of_o such_o a_o hardness_n as_o make_v it_o fit_a for_o graver_n drill_v and_o such_o like_a tool_n but_o if_o it_o be_v keep_v a_o few_o minute_n long_o in_o the_o flame_n till_o it_o grow_v blue_a it_o become_v much_o soft_a and_o unfit_a to_o make_v graver_n for_o metal_n but_o fit_a to_o make_v spring_n for_o watch_n and_o such_o like_a instrument_n which_o be_v therefore_o common_o of_o that_o colour_n and_o if_o the_o steel_n be_v keep_v in_o the_o flame_n after_o that_o this_o deep_a blue_n have_v disclose_v itself_o it_o will_v grow_v so_o soft_a as_o to_o need_v to_o be_v new_o harden_v again_o before_o it_o can_v be_v bring_v to_o a_o temper_n fit_a for_o drill_v or_o penknife_n and_o i_o confess_v pyro_n i_o have_v take_v much_o pleasure_n to_o see_v the_o colour_n run_v along_o from_o the_o part_n of_o the_o steel_n contiguous_a to_o the_o flame_n to_o the_o end_n of_o the_o instrument_n and_o succeed_v one_o another_o so_o fast_o that_o if_o a_o man_n be_v not_o vigilant_a to_o thrust_v the_o steel_n into_o the_o tallow_n at_o the_o very_a nick_n of_o time_n at_o which_o it_o have_v attain_v its_o due_a colour_n he_o shall_v miss_v of_o give_v his_o tool_n the_o right_a temper_n but_o because_o the_o flame_n of_o a_o candle_n be_v offensive_a to_o my_o weak_a eye_n and_o because_o it_o be_v apt_a to_o either_o black_a or_o sully_v the_o contiguous_a part_n of_o the_o steel_n which_o be_v hold_v in_o it_o and_o thereby_o hinder_v the_o change_n of_o colour_n from_o be_v so_o long_o and_o clear_o discern_v i_o have_v sometime_o make_v this_o experiment_n by_o lay_v the_o steel_n to_o be_v temper_v upon_o a_o heat_a bar_n of_o iron_n which_o we_o find_v also_o to_o be_v employ_v by_o some_o artificer_n in_o the_o temper_n of_o such_o great_a instrument_n as_o be_v too_o big_a to_o be_v soon_o heat_v sufficient_o by_o the_o flame_n of_o a_o candle_n and_o you_o may_v easy_o satisfy_v yourself_o pyro_n of_o the_o differ_a hardness_n and_o toughness_n which_o be_v ascribe_v to_o steel_n temper_v at_o different_a colour_n if_o you_o break_v but_o some_o slender_a wire_n of_o steel_n so_o temper_v and_o observe_v how_o they_o differ_v in_o brittleness_n and_o if_o with_o a_o file_n you_o also_o make_v trial_n of_o their_o various_a degree_n of_o hardness_n 2_o but_o pyrophilus_n i_o must_v not_o at_o present_a any_o further_o prosecute_v the_o consideration_n of_o the_o importance_n of_o experiment_n about_o colour_n not_o only_o because_o you_o will_v in_o the_o follow_a paper_n find_v some_o instance_n that_o will_v here_o be_v present_v you_o out_o of_o their_o due_a place_n of_o the_o use_n that_o may_v be_v make_v of_o such_o experiment_n in_o discover_v in_o divers_a body_n what_o kind_a the_o salt_n be_v that_o be_v predominant_a in_o they_o but_o also_o because_o a_o speculative_a naturalist_n may_v just_o enough_o allege_v that_o as_o light_n be_v so_o please_v a_o object_n as_o to_o be_v well_o worth_a our_o look_v on_o though_o it_o discover_v to_o we_o nothing_o but_o its_o self_n so_o modify_v light_o call_v colour_n be_v worth_a our_o contemplation_n though_o by_o understand_v its_o nature_n we_o shall_v be_v teach_v nothing_o else_o and_o however_o i_o need_v not_o make_v either_o you_o or_o myself_o excuse_v for_o entertain_v you_o on_o the_o subject_n i_o be_o now_o about_o to_o treat_v of_o since_o the_o pleasure_n pyro_n take_v in_o mix_v and_o lay_v on_o of_o colour_n will_v i_o presume_v keep_v he_o and_o will_v i_o be_o sure_a keep_v i_o from_o think_v it_o troublesome_a to_o set_v down_o especial_o after_o the_o tedious_a process_n about_o other_o matter_n wherewith_o i_o fear_v i_o may_v have_v tyr_z d_o he_o some_o easy_a and_o not_o unpleasant_a experiment_n relate_v to_o that_o subject_n 3_o but_o before_o we_o descend_v to_o the_o more_o particular_a consideration_n we_o be_v to_o present_v you_o concern_v colour_n i_o presume_v it_o will_v be_v seasonable_a to_o propose_v at_o the_o very_a entrance_n a_o distinction_n the_o ignorance_n or_o neglect_n of_o which_o seem_v to_o i_o to_o have_v frequent_o enough_o occasion_v either_o mistake_n or_o confusion_n in_o the_o write_n of_o divers_a modern_a philosopher_n for_o colour_n may_v be_v consider_v either_o as_o it_o be_v a_o quality_n reside_v in_o the_o body_n that_o be_v say_v to_o be_v colour_v or_o to_o modify_v the_o light_n after_o such_o or_o such_o a_o manner_n or_o else_o as_o the_o light_n itself_o which_o so_o modify_v strike_v upon_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
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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into_o it_o p._n 170._o l._n 23._o &_o 24._o leg_n some_o solution_n hereafter_o to_o be_v mention_v for_o the_o solution_n of_o potash_n and_o other_o lixiviate_v salt_n p._n 171._o l._n 6._o insert_v part_n of_o between_o the_o word_n most_o and_o dissolve_v p._n 176._o l._n ult_n insert_v theparticle_n it_o between_o the_o word_n judge_v and_o not_o p._n 234._o l._n 4._o log_n woud-wax_n or_o wood-wax_n p._n 320l_o 29._o leg_n urine_n for_o urn_n the_o experimental_a history_n of_o colour_n begin_v the_o first_o part_n chap._n i._n i_o have_v see_v you_o so_o passionate_o addict_v pyrophilus_n to_o the_o delightful_a art_n of_o limn_v and_o paint_v that_o i_o can_v but_o think_v myself_o oblige_v to_o acquaint_v you_o with_o some_o of_o those_o thing_n that_o have_v occur_v to_o i_o concern_v the_o change_n of_o colour_n and_o i_o may_v expect_v that_o i_o shall_v as_o well_o serve_v the_o virtuoso_n in_o general_a as_o gratify_v you_o in_o particular_a by_o furnish_v a_o person_n 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