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nature_n figure_n matter_n motion_n 3,415 5 9.0997 5 false
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A28944 Certain physiological essays and other tracts written at distant times, and on several occasions by the honourable Robert Boyle ; wherein some of the tracts are enlarged by experiments and the work is increased by the addition of a discourse about the absolute rest in bodies. Boyle, Robert, 1627-1691. 1669 (1669) Wing B3930; ESTC R17579 210,565 356

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wide-mouthed_a glass_n fill_v with_o this_o liquor_n which_o must_v not_o be_v ou●r_o dephlegm_v lest_o the_o oil_n sink_v in_o it_o a_o little_a common_a oy●_n or_o spirit_n of_o turpentine_n which_o i_o therefore_o make_v choice_n of_o because_o its_o tenacity_n great_a than_o that_o of_o the_o chemical_a oil_n of_o spice_n make_v it_o that_o it_o will_v neither_o mingle_v with_o spirit_n of_o wine_n nor_o spread_v itself_o as_o divers_a other_o distil_a oil_n will_v upon_o the_o surface_n of_o it_o but_o keep_v itself_o in_o the_o form_n of_o round_a drop_n who_o shape_n facilitate_v their_o motion_n the_o oily_a drop_n then_o swim_v at_o the_o top_n of_o the_o spirit_n of_o wine_n will_v be_v by_o the_o disorderly_a roving_n of_o the_o agile_a part_n of_o it_o which_o hit_v against_o they_o little_a globe_n as_o the_o vivous_a spirit_n ascend_v to_o exhale_v make_v to_o move_v restl●sly_o to_o and_o fro_o in_o a_o irregular_a manner_n the_o drop_n sometime_o bear_v up_o to_o one_o another_o as_o if_o all_o or_o most_o of_o they_o be_v present_o to_o unite_v into_o one_o body_n and_o then_o sudden_o fall_v off_o and_o continue_v to_o shift_v place_n with_o one_o another_o after_o a_o manner_n pleasant_a and_o strange_a enough_o to_o they_o that_o never_o before_o see_v the_o experiment_n and_o this_o dance_n will_v continue_v for_o half_a a_o hour_n or_o a_o hour_n or_o a_o short_a or_o much_o long_a time_n according_a to_o the_o quantity_n and_o strength_n of_o the_o liquor_n till_o the_o spirituous_a part_n be_v fly_v away_o the_o drop_n be_v no_o long_o impel_v lie_v at_o rest_n upon_o the_o disspirited_a liquor_n as_o they_o will_v upon_o common_a water_n and_o whereas_o the_o nimble_a motion_n of_o the_o drop_n may_v be_v suspect_v to_o proceed_v from_o some_o secret_a contrariety_n in_o nature_n betwixt_o the_o oil_n of_o turpentine_n and_o spirit_n of_o wine_n beside_o that_o i_o can_v easy_o show_v that_o those_o two_o liquor_n have_v no_o antipathy_n i_o not_o only_o try_v the_o experiment_n with_o another_o inflammable_a liquor_n than_o spirit_n of_o wine_n but_o if_o i_o much_o misremember_v not_o sound_v as_o i_o expect_v that_o little_a piece_n of_o chopped_a straw_n such_o both_o be_v light_n and_o not_o easy_o imbibe_v moisture_n be_v gentle_o let_v fall_v upon_o the_o spirit_n of_o wine_n be_v in_o a_o tumultuous_a manner_n carry_v to_o &_o fro_o upon_o the_o surface_n of_o it_o though_o i_o be_o not_o sure_a but_o that_o the_o motion_n of_o the_o oily_a drop_n may_v be_v in_o part_n due_a to_o some_o partial_a solution_n make_v of_o they_o by_o the_o vivous_a spirit_n which_o during_o that_o action_n may_v tumble_v they_o to_o and_o fro_o not_o to_o add_v that_o i_o have_v by_o some_o trial_n be_v tempt_v to_o suspect_v the_o air_n may_v have_v some_o interest_n in_o the_o motion_n of_o the_o drop_n however_o i_o have_v mention_v the_o recite_v experiment_n not_o as_o if_o i_o think_v that_o either_o it_o or_o fugitive_a spirit_n of_o wine_n be_v fit_a to_o teach_v we_o the_o nature_n of_o fluid_a body_n in_o general_a but_o to_o show_v by_o a_o ocular_a example_n that_o there_o may_v be_v a_o quick_a and_o intestine_a motion_n in_o some_o part_n of_o a_o liquor_n notwithstanding_o that_o the_o unassisted_a eye_n can_v discern_v no_o such_o matter_n i_o shall_v not_o here_o relate_v how_o have_v cause_v to_o be_v hermetical_o seal_v up_o some_o of_o these_o liquor_n in_o a_o glass_n to_o try_v how_o long_o the_o extravagant_a dance_n of_o the_o drop_n will_v last_v when_o the_o more_o spirituous_a part_n of_o the_o vinous_a liquor_n can_v not_o exhale_v my_o vessel_n be_v soon_o break_v without_o any_o discernible_a violence_n nor_o shall_v i_o now_o take_v notice_n of_o any_o of_o the_o other_o phaenomena_n of_o our_o experiment_n partly_o because_o i_o have_v elsewhere_o mention_v most_o of_o they_o and_o partly_o because_o i_o think_v it_o more_o pertinent_a to_o our_o present_a theme_n to_o observe_v that_o this_o unseen_a agitation_n of_o the_o minute_n part_n will_v not_o only_o hold_v in_o light_n and_o spirituous_a liquor_n for_o that_o the_o insensible_a part_n even_o of_o the_o heavy_a liquor_n themselves_o be_v also_o in_o actual_a motion_n though_o many_o may_v think_v it_o unfit_a to_o be_v believe_v will_v follow_v from_o what_o have_v be_v already_o deliver_v concern_v the_o nature_n of_o fluid_a body_n as_o such_o and_o may_v be_v confirm_v by_o this_o that_o whereas_o three_o of_o the_o heavy_a liquor_n we_o yet_o know_v of_o be_v quicksilver_n oil_n of_o tartar_n per_fw-la deliquium_fw-la and_o oil_n of_o vitriol_n that_o first-named_a will_n even_o in_o the_o cold_a penetrate_v into_o the_o pore_n of_o foliate_v gold_n and_o destroy_v the_o texture_n of_o that_o close_a of_o metal_n the_o liquor_n also_o of_o salt_n of_o tartar_n will_v in_o the_o cold_a draw_v tincture_n from_o several_a body_n and_o we_o have_v endeavour_v to_o evince_v the_o agitation_n of_o the_o part_n of_o oil_n of_o vitriol_n not_o only_o by_o show_v how_o in_o the_o cold_a it_o will_v corrode_v divers_a metal_n but_o by_o cast_v little_a piece_n of_o camphire_n into_o it_o which_o without_o the_o assistance_n of_o the_o sire_n be_v make_v liquid_a by_o it_o and_o appear_v like_o so_o many_o drop_n of_o oil_n and_o he_o that_o yet_o doubt_n whether_o the_o part_n of_o these_o two_o oil_n as_o chemist_n abusive_o call_v they_o how_o ponderous_a soever_o they_o be_v be_v fierce_o agitate_a or_o no_o may_v probable_o be_v soon_o satisfy_v by_o shake_v a_o ounce_n or_o two_o of_o each_o of_o they_o together_o and_o observe_v the_o heat_n hiss_v ebullition_n and_o sparkle_a that_o will_v sudden_o ensue_v upon_o their_o be_v blend_v sect_n xxv_o but_o here_o we_o must_v take_v notice_n that_o though_o it_o belong_v to_o the_o nature_n of_o fluid_a body_n that_o their_o par●s_n do_v easy_o shift_v place_n yet_o that_o be_v to_o be_v understand_v only_o as_o to_o th●_n part_n of_o the_o same_o fluid_a body_n as_o water_n or_o of_o such_o differ_v fluid_a body_n as_o be_v dispose_v ready_o to_o admit_v each_o other_o particle_n and_o mingle_v together_o as_o we_o see_v in_o water_n and_o wine_n for_o otherwise_o fluid_a body_n may_v be_v of_o such_o differ_a nature_n that_o when_o two_o or_o more_o of_o they_o be_v put_v together_o they_o will_v not_o mix_v but_o each_o retain_v its_o own_o distinct_a surface_n so_o that_o in_o regard_n of_o one_o another_o the_o contiguous_a body_n do_v in_o some_o degree_n emulate_v each_o of_o they_o the_o nature_n of_o a_o consistent_a body_n for_o though_o it_o can_v be_v look_v upon_o as_o a_o hard_a body_n but_o a_o soft_a because_o of_o the_o easy_a session_n of_o its_o superficies_n yet_o it_o do_v like_o a_o compact_n or_o consistent_a body_n deny_v to_o mingle_v permanent_o with_o the_o contiguous_a liquor_n or_o other_o fluid_a substance_n and_o i_o somewhat_o wonder_n that_o lucretius_n and_o other_o atomist_n shall_v at_o least_o for_o aught_o i_o remember_v oversee_v this_o observation_n since_o it_o be_v obvious_a enough_o in_o oil_n which_o will_v not_o mix_v with_o water_n but_o float_v upon_o its_o surface_n not_o to_o mention_v that_o quicksilver_n will_v not_o incorporate_v with_o any_o of_o the_o familiar_a liquor_n know_v to_o the_o ancient_n i_o have_v almost_o forget_v that_o i_o promise_v at_o the_o begin_n of_o this_o discourse_n a_o instance_n concern_v flame_n which_o i_o will_v therefore_o now_o recite_v and_o it_o be_v that_o have_v by_o a_o easy_a preparation_n of_o copper_n by_o the_o intervention_n of_o a_o little_a sal_fw-la ammoniac_a which_o i_o have_v already_o teach_v in_o another_o treatise_n flame_n so_o open_v the_o body_n of_o that_o metal_n as_o to_o make_v it_o inflammable_a i_o take_v some_o
i_o a_o difficulty_n which_o though_o unmentioned_a at_o our_o meeting_n may_v afford_v a_o objection_n perhaps_o more_o difficult_a than_o any_o of_o not_o to_o say_v all_o the_o forego_n namely_o that_o it_o be_v scarce_o imaginable_a how_o such_o solid_a and_o hard_a body_n shall_v have_v their_o internal_a part_n wrought_v upon_o by_o such_o slight_a agent_n as_o the_o air_n and_o perhaps_o some_o yet_o minute_a matter_n that_o be_v disperse_v in_o it_o and_o how_o it_o be_v possible_a that_o where_o there_o be_v a_o actual_a motion_n it_o shall_v be_v so_o slow_a that_o a_o corpuscle_n of_o iron_n for_o instance_n seat_v in_o the_o internal_a part_n of_o a_o magnetic_a needle_n shall_v spend_v so_o long_a time_n as_o our_o conjecture_n require_v in_o travel_v so_o little_a a_o space_n as_o from_o thence_o to_o the_o next_o superficies_n of_o the_o needle_n but_o to_o this_o double_a objection_n though_o some_o instance_n which_o you_o will_v meet_v with_o in_o the_o follow_a part_n of_o this_o paper_n may_v be_v proper_o apply_v to_o solve_v it_o yet_o not_o to_o make_v your_o curiosity_n wait_v i_o will_v here_o speak_v a_o word_n or_o two_o to_o each_o of_o the_o member_n of_o the_o objection_n sect_n iv._o and_o to_o the_o first_o i_o say_v that_o these_o intestine_a motion_n of_o the_o corpuscle_n of_o hard_a body_n need_v not_o be_v sole_o nor_o perhaps_o principal_o ascribe_v to_o those_o obvious_a external_a agent_n to_o which_o we_o be_v wont_n to_o refer_v they_o since_o these_o may_v but_o excite_v or_o assist_v the_o more_o principal_a or_o internal_a cause_n of_o the_o motion_n we_o speak_v of_o as_o you_o may_v gather_v from_o what_o be_v but_o late_o mention_v of_o the_o connate_a and_o unlooseable_a mobility_n of_o the_o atom_n according_a to_o epicurus_n and_o the_o permeation_n of_o the_o most_o solid_a body_n by_o the_o cartesian_a materia_fw-la subtilis_fw-la and_o we_o may_v see_v by_o the_o sudden_a effect_n of_o the_o loadstone_n in_o endow_a steel_n wi●h_v magnetic_a quality_n and_o deprive_v it_o of_o they_o again_o both_o which_o suppose_v the_o intervention_n of_o a_o change_n of_o texture_n and_o this_o a_o production_n of_o local_a motion_n in_o the_o metal_n that_o very_a minute_n and_o insensible_a corpuscle_n of_o matter_n be_v not_o uncapable_a of_o effect_v durable_a change_n in_o the_o solid_a body_n and_o as_o for_o the_o other_o member_n of_o the_o objection_n i_o confess_v it_o be_v not_o easy_a for_o we_o who_o be_v wont_a perhaps_o too_o much_o to_o follow_v our_o eye_n for_o guide_n in_o judge_v of_o thing_n corporeal_a and_o to_o deny_v existence_n to_o most_o thing_n to_o most_o thing_n whereto_o nature_n have_v deny_v a_o visible_a bulk_n it_o be_v not_o easy_a i_o say_v for_o we_o to_o imagine_v so_o great_a a_o slowness_n as_o it_o be_v very_o possible_a for_o nature_n to_o make_v use_n of_o in_o her_o operation_n though_o our_o not_o be_v able_a to_o discern_v the_o motion_n of_o a_o shadow_n of_o a_o dial-plate_n or_o that_o of_o the_o index_n upon_o a_o clock_n or_o watch_n ought_v to_o make_v we_o sensible_a of_o the_o incompetency_n of_o our_o eye_n to_o discern_v some_o motion_n of_o natural_a body_n which_o reason_n tell_v we_o aught_o to_o be_v incomparable_o slow_a than_o these_o but_o not_o now_o to_o dispute_v about_o the_o existence_n and_o attribute_n of_o infinite_a slowness_n or_o at_o least_o a_o slowness_n in_o the_o next_o possible_a degree_n to_o infinite_a i_o consider_v that_o it_o have_v not_o that_o i_o know_v of_o be_v demonstrate_v nor_o attempt_v to_o be_v so_o that_o the_o motion_n of_o the_o corpuscle_n for_o example_n of_o the_o needle_n above_o mention_v must_v be_v make_v in_o a_o direct_a line_n from_o the_o place_n where_o it_o be_v first_o suppose_v to_o be_v to_o the_o superficies_n of_o the_o needle_n for_o it_o seem_v more_o rational_a and_o to_o agree_v better_o with_o the_o phaenomena_n to_o suppose_v that_o the_o way_n of_o this_o corpuscle_n in_o the_o body_n it_o will_v quit_v be_v extreme_o crooked_a and_o intricate_a almost_o like_o that_o of_o a_o squib_n in_o the_o air_n or_o on_o the_o ground_n for_o it_o be_v on_o the_o one_o hand_n urge_v on_o by_o the_o cause_n whatever_o they_o be_v that_o make_v it_o strive_v to_o fly_v away_o and_o on_o the_o other_o hand_n hinder_v by_o the_o corpuscle_n whereto_o it_o be_v connect_v and_o by_o the_o occursion_n of_o other_o corpuscle_n who_o motion_n may_v be_v opposite_a to_o or_o disagree_v with_o those_o of_o our_o design_v corpuscle_n it_o may_v probable_o before_o it_o can_v extricate_v itself_o be_v reduce_v to_o encounter_v and_o wrestle_v as_o it_o be_v with_o many_o other_o corpuscle_n and_o be_v by_o they_o sometime_o thrust_v or_o impel_v to_o the_o right_a hand_n and_o to_o the_o left_a and_o sometime_o also_o repel_v inward_o even_o after_o it_o be_v come_v to_o the_o superficial_a part_n of_o the_o needle_n whence_o it_o may_v not_o present_o have_v the_o liberty_n to_o fly_v away_o but_o may_v be_v draw_v back_o by_o some_o other_o corpuscle_n wherewith_o it_o be_v yet_o connect_v and_o which_o happen_v to_o be_v itself_o thrust_v inward_a may_v draw_v after_o it_o and_o so_o entangle_v again_o our_o almost_o disband_v corpuscle_n beside_o that_o the_o gravity_n of_o the_o component_a particle_n of_o a_o body_n be_v oftentimes_o such_o that_o it_o be_v easy_a for_o the_o agent_n that_o put_v they_o in_o motion_n to_o continue_v they_o in_o that_o slow_a motion_n among_o themselves_o than_o drive_v they_o up_o into_o so_o light_a a_o medium_n as_o the_o air_n as_o experience_n show_v in_o those_o body_n that_o be_v call_v fix_v as_o gold_n and_o glass_n though_o in_o actual_a fusion_n but_o i_o forget_v that_o i_o promise_v you_o to_o decline_v speculation_n and_o therefore_o i_o shall_v only_o name_v to_o you_o a_o couple_n of_o instance_n which_o will_v serve_v to_o confirm_v both_o what_o i_o be_v late_o say_v and_o what_o i_o be_o now_o in_o prove_v sect_n v._o the_o first_o of_o these_o i_o shall_v take_v from_o what_o be_v usual_o grant_v as_o matter_n of_o fact_n namely_o that_o if_o a_o spring_n though_o make_v of_o so_o hard_a a_o body_n as_o steel_n be_v forcible_o bend_v and_o keep_v but_o a_o moderate_a while_n in_o that_o posture_n as_o soon_o as_o the_o force_n that_o keep_v it_o bend_v be_v remove_v it_o will_v again_o return_v to_o its_o former_a figure_n but_o if_o it_o be_v keep_v too_o long_o in_o that_o force_a position_n it_o will_v by_o degree_n lose_v that_o which_o they_o call_v the_o motion_n of_o restitution_n and_o retain_v its_o new_a crooked_a figure_n though_o the_o force_n that_o bend_v ●t_z be_v remove_v which_o show_v both_o the_o power_n of_o some_o of_o the_o more_o familiar_a agent_n in_o nature_n and_o which_o be_v that_o the_o show_v whereof_o i_o here_o chief_o aim_n at_o that_o where_o there_o be_v a_o continue_a endeavour_n of_o the_o part_n of_o a_o body_n to_o put_v themselves_o into_o another_o state_n yet_o the_o motion_n or_o rather_o the_o progress_n may_v be_v much_o more_o slow_a than_o man_n seem_v as_o yet_o to_o have_v take_v notice_n of_o since_o it_o be_v a_o great_a while_n before_o ●he_n texture_n of_o the_o corpuscle_n of_o the_o steel_n be_v so_o alter_v as_o to_o make_v they_o lose_v their_o former_a springiness_n but_o i_o will_v second_v this_o with_o a_o more_o illustrious_a experiment_n which_o will_v at_o once_o confirm_v what_o i_o have_v just_a now_o say_v and_o show_v that_o the_o air_n or_o the_o invisible_a corpuscle_n harbour_v in_o it_o may_v have_v no_o inconsiderable_a power_n to_o act_v upon_o and_o effect_n change_v in_o the_o solid_a body_n to_o this_o purpose_n i_o shall_v only_o observe_v to_o you_o that_o though_o if_o a_o bar_n of_o iron_n have_v one_o of_o its_o end_n hold_v perpendicular_o and_o at_o a_o fit_a distance_n to_o the_o lily_n or_o north-point_n of_o the_o mariner_n compass_n i_o mean_v that_o which_o point_v towards_o the_o north_n it_o will_v as_o i_o elsewhere_o mention_n drive_v it_o away_o towards_o the_o east_n or_o west_n and_o if_o this_o same_o low_a end_n of_o the_o bar_n of_o iron_n be_v put_v into_o a_o contrary_a posture_n it_o will_v present_o lose_v its_o temporary_a magnetism_n as_o i_o elsewhere_o declare_v yet_o if_o this_o bar_n be_v very_o long_o keep_v upright_o in_o a_o window_n or_o other_o convenient_a place_n then_o as_o some_o late_a magnetical_a writer_n will_v tell_v you_o it_o will_v have_v acquire_v a_o constant_a and_o durable_a magnetic_a power_n which_o be_v a_o phaenomenon_n that_o make_v exceed_o for_o our_o present_a purpose_n since_o it_o hence_o appear_v both_o that_o the_o air_n together_o with_o the_o magnetical_a effluvia_fw-la of_o the_o
well_o know_v by_o his_o write_n who_o be_v please_v to_o like_v it_o so_o well_o as_o to_o desire_v he_o may_v translate_v it_o and_o have_v according_o long_o before_o turn_v it_o into_o very_o elegant_a latin_n i_o may_v perhaps_o venture_v to_o add_v that_o though_o i_o can_v not_o justify_v myself_o by_o so_o convince_a a_o proof_n of_o my_o innocence_n yet_o he_o that_o shall_v take_v the_o pain_n to_o consider_v that_o i_o can_v not_o borrow_v of_o glauber_n the_o various_a phaenomena_n i_o have_v particular_o set_v down_o and_o much_o less_o the_o reflection_n on_o they_o &_o shall_v compare_v in_o what_o differ_v manner_n and_o to_o what_o differ_v purpose_n we_o two_o propose_v the_o make_n of_o salt-petre_n out_o of_o its_o own_o spirit_n and_o fix_v salt_n he_o but_o prescribe_v as_o a_o bare_a chemical_a purification_n of_o nitre_n what_o i_o teach_v as_o a_o philosophical_a redintegration_n of_o it_o he_o i_o say_v who_o shall_v compare_v these_o thing_n together_o will_v perchance_o think_v that_o i_o be_v as_o likely_a to_o find_v this_o last_o name_v experiment_n as_o another_o which_o thing_n i_o say_v not_o as_o if_o i_o scruple_v to_o make_v use_n of_o the_o industrious_a glauber_n or_o any_o other_o man_n experiment_n especial_o when_o i_o borrow_v not_o with_o they_o any_o of_o the_o doctrine_n i_o build_v on_o they_o but_o because_o since_o i_o neither_o do_v nor_o can_v take_v any_o notice_n of_o glauber_n book_n in_o i_o i_o judge_v it_o requisite_a to_o say_v something_o to_o prevent_v my_o be_v think_v to_o have_v unthankful_o take_v one_o of_o the_o chief_a passage_n of_o my_o discourse_n from_o a_o book_n to_o which_o i_o be_v utter_o a_o stranger_n the_o reason_n of_o my_o thus_o consent_v to_o publish_v the_o follow_a history_n of_o fluidity_n and_o firmness_n without_o the_o rest_n of_o those_o annotation_n which_o i_o write_v upon_o the_o same_o essay_n touch_v salt-petre_n be_v partly_o that_o these_o be_v my_o recent_a composure_n of_o this_o nature_n have_v be_v write_v but_o the_o last_o year_n save_o one_o and_o be_v set_v down_o when_o i_o allow_v myself_o to_o be_v less_o unacquainted_a with_o writer_n addict_v to_o the_o modern_a philosophy_n partly_o also_o because_o the_o considerableness_n of_o the_o subject_n invite_v i_o to_o make_v these_o annotation_n much_o more_o copious_a and_o somewhat_o less_o unaccurate_a than_o my_o note_n upon_o almost_o any_o other_o part_n of_o the_o essay_n &_o partly_o and_o indeed_o principal_o because_o mention_v be_v sometime_o make_v of_o this_o history_n in_o my_o fresh_o publish_v physicomechanical_a experiment_n both_o the_o printer_n and_o some_o learned_a gentleman_n who_o be_v please_v to_o think_v that_o book_n not_o unworthy_a the_o translate_n have_v solicit_v i_o to_o let_v this_o treatise_n be_v annex_v to_o the_o several_a version_n they_o be_v about_o of_o that_o pneumatical_a piece_n and_o to_o the_o english_a edition_n of_o the_o three_o foregoing_a discourse_n which_o the_o printer_n fear_n will_v without_o the_o company_n of_o these_o or_o some_o other_o make_v but_o too_o thin_a a_o book_n and_o i_o think_v fit_a to_o premise_v to_o this_o history_n the_o essay_n concern_v salt-petre_n not_o only_o because_o it_o may_v appear_v very_o improper_a to_o publish_v annotation_n without_o the_o text_n itself_o whereunto_o they_o relate_v but_o indeed_o because_o i_o find_v that_o there_o be_v still_o many_o learned_a man_n of_o the_o same_o disposition_n with_o those_o i_o have_v mention_v in_o the_o begin_n of_o this_o preface_n whence_o i_o be_o invite_v to_o divulge_v this_o essay_n by_o the_o same_o consideration_n that_o at_o first_o induce_v i_o to_o write_v it_o especial_o since_o i_o remember_v not_o that_o among_o the_o new_a philosopher_n i_o have_v meet_v with_o any_o one_o experiment_n that_o do_v so_o fair_o and_o sensible_o accommodate_v so_o many_o of_o their_o opinion_n and_o indeed_o i_o free_o confess_v that_o i_o shall_v think_v myself_o to_o have_v do_v no_o useless_a service_n to_o the_o commonwealth_n of_o learning_n if_o i_o prove_v so_o fortunate_a as_o by_o these_o or_o any_o other_o write_n of_o my_o to_o the_o like_a purpose_n to_o beget_v a_o good_a understanding_n betwixt_o the_o chemist_n and_o the_o mechanical_a philosopher_n who_o have_v hitherto_o be_v too_o little_o acquaint_v with_o one_o another_o learning_n there_o be_v to_o this_o very_a day_n a_o great_a and_o almost_o general_a misunderstand_a betwixt_o the_o corpuscular_a philosopher_n and_o the_o chemist_n most_o of_o those_o on_o the_o one_o hand_n look_v upon_o the_o spagyrist_n as_o a_o company_n of_o mere_a and_o irrational_a operator_n who_o experiment_n may_v indeed_o be_v serviceable_a to_o apothecary_n and_o perhaps_o to_o physician_n but_o be_v useless_a to_o a_o philosopher_n that_o aim_v at_o cure_v no_o disease_n but_o that_o of_o ignorance_n and_o most_o of_o the_o spagyrist_n on_o the_o other_o hand_n look_v upon_o the_o corpuscularian_o if_o i_o may_v so_o call_v they_o as_o a_o sort_n of_o empty_a and_o extravagant_a speculator_n who_o pretend_v to_o explicate_v the_o great_a book_n of_o nature_n without_o have_v so_o much_o as_o look_v upon_o the_o chief_a and_o the_o difficult_a part_n of_o it_o namely_o the_o phaenomena_n that_o their_o art_n have_v add_v to_o the_o former_a edition_n of_o this_o vast_a and_o obscure_a volume_n but_o that_o some_o of_o the_o principal_a of_o the_o hermetick_n opinion_n may_v be_v more_o handsome_o accommodate_v by_o the_o notion_n of_o the_o phoenician_n hypothesis_n than_o by_o the_o common_a philosophy_n of_o element_n of_o substantial_a form_n which_o yet_o their_o writer_n so_o frequent_o allude_v to_o and_o otherwise_o employ_v may_v appear_v from_o hence_o that_o whereas_o the_o school_n general_o declare_v the_o transmutation_n of_o one_o species_n into_o another_o and_o particular_o that_o of_o base_a metal_n into_o gold_n to_o be_v against_o nature_n and_o physical_o impossible_a the_o corpuscular_a doctrine_n reject_v the_o substantial_a form_n of_o the_o school_n and_o make_v body_n to_o differ_v but_o in_o the_o magnitude_n figure_n motion_n or_o rest_n and_o situation_n of_o their_o component_a particle_n which_o may_v be_v almost_o infinite_o vary_v seem_v much_o more_o favourable_a to_o the_o chemical_a doctrine_n of_o the_o possibility_n of_o work_v wonderful_a change_n and_o even_a transmutation_n in_o mix_a body_n and_o on_o the_o other_o side_n there_o be_v scarce_o any_o experiment_n that_o may_v better_o accommodate_v the_o phoenician_n principle_n than_o those_o that_o may_v be_v borrow_v from_o the_o laboratory_n of_o chemist_n for_o first_o chemistry_n enable_v we_o to_o depurate_a body_n and_o in_o some_o measure_n to_o analyse_v they_o and_o take_v asunder_o their_o heterogeneous_a part_n in_o many_o chemical_a experiment_n we_o may_v better_o than_o in_o other_o know_v what_o manner_n of_o body_n we_o employ_v art_n have_v make_v they_o more_o simple_a or_o uncompounded_a than_o nature_n alone_o be_v wont_a to_o present_v they_o we_o and_o next_o many_o chemical_a operation_n be_v perform_v in_o close_a and_o yet_o in_o transparent_a vessel_n we_o may_v better_o know_v what_o concur_v to_o the_o effect_n produce_v because_o adventitious_a body_n or_o at_o least_o all_o grosser_n one_o be_v keep_v from_o intrude_a upon_o those_o who_o operation_n we_o have_v a_o mind_n to_o consider_v and_o last_o the_o body_n employ_v by_o the_o chemist_n be_v for_o the_o most_o part_n active_a one_o the_o progress_n of_o nature_n in_o a_o experiment_n and_o the_o series_n of_o successive_a alteration_n through_o which_o the_o matter_n pass_v from_o first_o to_o last_o be_v wont_a to_o be_v make_v more_o nimble_o and_o consequent_o become_v the_o more_o easy_a to_o be_v take_v notice_n of_o and_o comprehend_v so_o that_o all_o this_o consider_v i_o hope_v it_o may_v conduce_v to_o the_o advancement_n of_o natural_a philosophy_n if_o as_o i_o say_v i_o be_v so_o happy_a as_o by_o any_o endeavour_n of_o i_o to_o possess_v both_o chemist_n and_o corpuscularian_o of_o the_o advantage_n that_o may_v redound_v to_o each_o party_n by_o the_o confederacy_n i_o be_o mediate_a between_o they_o and_o excite_v they_o both_o to_o inquire_v more_o into_o one_o another_o philosophy_n by_o manifest_v that_o as_o many_o chemical_a experiment_n may_v be_v happy_o explicate_v by_o corpuscularian_a notion_n so_o many_o of_o the_o corpuscularian_a notion_n may_v be_v commodious_o either_o illustrate_v or_o confirm_v by_o chemical_a experiment_n a_o physico-chymical_a essay_n contain_v a_o experiment_n with_o some_o consideraration_n touch_v the_o differ_a part_n and_o redintegration_n of_o salt-petre_a section_n i._n salt-petre_a pyrophilus_n though_o in_o that_o form_n wherein_o it_o be_v sell_v in_o shop_n it_o be_v no_o very_o obvious_a concrete_a yet_o either_o in_o its_o rudiment_n or_o under_o several_a disguise_n
to_o have_v be_v destitute_a of_o moisture_n when_o commit_v to_o distillation_n sect_n xxiii_o but_o this_o not_o be_v precise_o a_o phaenomenon_n of_o our_o experiment_n we_o shall_v not_o here_o prosecute_v it_o though_o perhaps_o we_o else_o where_o may_v but_o rather_o observe_v to_o you_o pyrophilus_n that_o whereas_o good_a spirit_n of_o nitre_n be_v leave_v in_o a_o open_a vessel_n be_v wont_n to_o smoke_n and_o waste_v itself_o in_o a_o exhalation_n sensible_a especial_o if_o it_o be_v excite_v by_o a_o little_a heat_n not_o only_o in_o the_o nose_n but_o to_o the_o eye_n this_o fugitive_n spirit_n when_o it_o be_v once_o reunite_v to_o its_o own_o fix_a salt_n emit_v no_o such_o steam_n though_o keep_v a_o good_a while_n near_o a_o considerable_a fire_n which_o instance_n may_v somewhat_o assist_v we_o to_o make_v out_o that_o the_o most_o fugitive_a part_n of_o concretes_n may_v in_o spite_n of_o their_o natural_a mobility_n be_v detain_v in_o body_n by_o their_o union_n and_o texture_n with_o the_o more_o sluggish_a part_n of_o they_o among_o which_o those_o light_a and_o more_o active_a ingredient_n may_v be_v so_o entangle_v as_o to_o be_v restrain_v from_o avolation_n sect_n xxiv_o another_o thing_n worth_n consider_v in_o our_o experiment_n be_v this_o that_o upon_o the_o drop_n of_o the_o acid_a spirit_n into_o the_o alkalizate_a liquor_n if_o you_o place_v the_o openmouth_n glass_n wherein_o the_o experiment_n be_v perform_v betwixt_o the_o light_n and_o your_o eye_n you_o may_v plain_o discern_v that_o the_o saline_n particle_n of_o these_o liquor_n toss_v one_o another_o or_o be_v toss_v by_o some_o brisk_a invisible_a substance_n to_o the_o height_n of_o divers_a finger_n breadth_n up_o into_o the_o air_n whence_o most_o of_o they_o fall_v back_o into_o the_o vessel_n like_o a_o thick_a shower_n of_o little_a drop_n of_o rain_n and_o it_o be_v worth_a inquire_v whence_o this_o sparkle_a of_o the_o part_n of_o these_o mix_a liquor_n arise_v and_o whether_o the_o saline_n corpuscle_n may_v be_v conceive_v rapid_o to_o move_v differ_v way_n and_o so_o thwart_v each_o other_o in_o their_o course_n and_o rude_o justle_a at_o their_o occursion_n some_o of_o they_o be_v force_v to_o bound_v or_o fly_v upward_o almost_o like_o ivory_n ball_n meet_v each_o other_o on_o a_o billyard-table_n and_o to_o assist_v you_o in_o this_o enquiry_n give_v i_o leave_v to_o inform_v you_o that_o the_o particle_n thus_o throw_v into_o the_o air_n appear_v to_o be_v most_o of_o they_o saline_n by_o this_o observation_n that_o soon_o after_o the_o fall_n of_o the_o forementioned_a shower_n you_o shall_v find_v the_o side_n of_o the_o glass_n wherein_o the_o affusion_n of_o the_o nitrous_a spirit_n have_v be_v make_v all_o embroider_a with_o little_a grain_n of_o salt_n leave_v there_o by_o those_o wander_a drop_n that_o fall_v beside_o the_o liquor_n sect_n xxv_o and_o let_v i_o far_o observe_v to_o you_o that_o there_o seem_v to_o be_v a_o very_a nimble_a agitation_n in_o the_o particle_n of_o the_o spirit_n of_o nitre_n by_o this_o that_o upon_o the_o pour_v of_o aqua_fw-la fortis_fw-la who_o active_a part_n be_v little_a else_o than_o spirit_n of_o nitre_n upon_o a_o solution_n of_o salt_n of_o tartar_n in_o fair_a water_n in_o which_o divers_a small_a lump_n of_o the_o salt_n remain_v yet_o undissolve_v we_o have_v observe_v the_o acid_a spirit_n to_o sever_v the_o particle_n of_o the_o salt_n with_o such_o impetuosity_n that_o the_o numberless_a little_a bubble_n produce_v upon_o their_o conflict_n and_o hasty_o ascend_v in_o swarm_n from_o some_o of_o the_o little_a lump_n make_v they_o emulate_v so_o many_o little_a but_o rapid_o rise_v spring_n and_o to_o make_v it_o yet_o appear_v more_o probable_a that_o there_o may_v be_v such_o cross_v motion_n in_o the_o part_n of_o these_o liquor_n we_o observe_v that_o after_o the_o two_o contrary_a salt_n have_v by_o their_o mutual_a conflict_n tire_v each_o other_o or_o rather_o have_v be_v upon_o their_o occursion_n fasten_v to_o one_o another_o there_o will_v follow_v no_o far_o ebullition_n or_o skip_v up_o and_o down_o of_o little_a drop_n of_o the_o liquor_n upon_o the_o put_n in_o of_o more_o spirit_n of_o nitre_n unless_o there_o be_v add_v likewise_o more_o of_o the_o alkalizate_a liquor_n sect_n xxvi_o and_o before_o we_o pass_v on_o from_o this_o reflection_n it_o may_v not_o be_v useless_a to_o take_v notice_n of_o the_o difference_n that_o there_o may_v be_v betwixt_o those_o active_a part_n of_o a_o body_n which_o be_v of_o differ_v nature_n when_o they_o be_v as_o it_o be_v sheathe_v up_o or_o wedge_v in_o among_o other_o in_o the_o texture_n of_o a_o concrete_a and_o the_o same_o particle_n when_o extricate_v from_o these_o impediment_n they_o be_v set_v at_o liberty_n to_o flock_v together_o and_o by_o the_o exercise_n of_o their_o nimble_a motion_n display_v their_o proper_a but_o former_o clog_v activity_n or_o acquire_v a_o disposition_n to_o be_v brisk_o agitate_a by_o some_o fine_a interfluent_a matter_n for_o though_o in_o the_o entire_a body_n of_o salt-petre_n the_o ingredient_n it_o consist_v of_o or_o the_o differ_a substance_n into_o which_o the_o fire_n dissipate_v it_o do_v so_o mutual_o implicate_v and_o hinder_v each_o other_o that_o the_o concrete_a whilst_o such_o act_v but_o very_o languid_o yet_o when_o the_o part_n come_v to_o be_v dislocate_v and_o the_o halituous_a and_o alkalizate_a particle_n be_v enable_v or_o make_v to_o disband_v from_o the_o concrete_a and_o associate_v themselves_o with_o those_o of_o their_o own_o nature_n we_o see_v with_o how_o great_a a_o activity_n both_o the_o acid_a spirit_n and_o the_o fix_a salt_n be_v endow_v sect_n xxvii_o and_o we_o may_v yet_o far_o observe_v that_o it_o be_v not_o bare_o a_o indefinite_a nimbleness_n of_o motion_n and_o activity_n of_o the_o particle_n of_o saline_n liquor_n that_o enable_v they_o to_o perform_v each_o of_o their_o particular_a effect_n for_o to_o the_o production_n of_o some_o of_o these_o there_o seem_v requisite_a beside_o perhaps_o a_o modification_n of_o their_o motion_n a_o determinate_a figure_n of_o the_o corpuscle_n answerable_a to_o that_o of_o the_o pore_n of_o the_o body_n by_o they_o to_o be_v dissolve_v as_o spirit_n of_o nitre_n corrode_v silver_n but_o not_o gold_n which_o nevertheless_o its_o particle_n associate_v with_o those_o of_o salarmoniack_a and_o thereby_o acquire_v a_o new_a figure_n and_o perhaps_o a_o differ_a motion_n will_v ready_o dissolve_v and_o the_o liquor_n of_o fix_a nitre_n will_v for_o the_o same_o reason_n dissolve_v such_o sulphureous_a and_o unctuous_a body_n as_o the_o acid_a spirit_n will_v not_o corrode_v nay_o and_o i_o have_v careful_o observe_v that_o there_o may_v be_v liquor_n that_o will_v not_o dissolve_v some_o body_n unless_o the_o motion_n or_o activity_n of_o their_o particle_n be_v allay_v or_o modify_v by_o the_o mixture_n of_o fair_a water_n or_o such_o unactive_a vehicle_n sect_n xxviii_o another_o particular_a which_o in_o our_o experiment_n we_o may_v take_v notice_n of_o be_v the_o unwarinesse_n of_o those_o vulgar_a chemist_n who_o presume_v confident_o and_o indiscriminate_o enough_o to_o ascribe_v to_o each_o of_o the_o heterogeneous_a ingredient_n or_o in_o their_o language_n principle_n of_o a_o concrete_a analyse_v by_o the_o fire_n the_o virtue_n and_o property_n perhaps_o too_o in_o a_o exalt_a degree_n of_o the_o entire_a body_n but_o though_o this_o be_v a_o error_n of_o very_a ill_a consequence_n in_o reference_n to_o divers_a chemical_a preparation_n of_o medicine_n yet_o have_v elsewhere_o discourse_v purposely_o of_o it_o we_o shall_v here_o content_v ourselves_o to_o allege_v against_o it_o the_o instance_n afford_v we_o by_o the_o experiment_n under_o consideration_n for_o in_o that_o we_o may_v observe_v that_o when_o salt-petre_n be_v distil_v the_o volatile_a liquor_n and_o fix_a salt_n into_o which_o it_o be_v reduce_v by_o the_o fire_n be_v endow_v with_o property_n exceed_v different_a both_o from_o each_o other_o and_o from_o those_o of_o the_o undissipate_v concrete_a for_o the_o spirit_n of_o nitre_n be_v as_o we_o former_o have_v observe_v a_o kind_a of_o acetum_fw-la minerale_fw-mi and_o possess_v the_o common_a quality_n to_o be_v meet_v with_o in_o acid_a spirit_n as_o such_o whereas_o the_o fix_a nitre_n be_v of_o a_o alkalizate_a nature_n and_o participate_v the_o quality_n belong_v general_o to_o lixiviate_v salt_n and_o salt-petre_a itself_o be_v a_o peculiar_a sort_n of_o salt_n discriminate_v by_o distinct_a property_n both_o from_o those_o salt_n that_o be_v eminent_o acid_a as_o alum_n vitriol_n sal-gemmae_a etc._n etc._n and_o from_o those_o that_o be_v proper_o alkalizate_a as_o salt_n of_o tartar_n and_o pot-ash_n and_o according_o we_o may_v easy_o observe_v a_o vast_a disparity_n in_o the_o effect_n and_o operation_n of_o these_o
condition_n be_v that_o there_o be_v store_n of_o vacant_a space_n intercept_v betwixt_o the_o component_a particle_n of_o the_o fluid_a body_n or_o at_o least_o about_o those_o of_o the●_n that_o be_v superficial_a for_o without_o this_o there_o will_v not_o b●_n room_n for_o each_o of_o the_o corpuscle_n to_o continue_v its_o agitation_n upon_o the_o surface_v of_o the_o neighbour_a one_o and_o there_o will_v be_v no_o session_n of_o any_o because_o there_o will_v be_v no_o place_n unpossessed_a for_o the_o impel_v corpuscle_n to_o be_v receive_v in_o but_o when_o i_o speak_v of_o vacant_a space_n ordinary_o if_o not_o always_o requisite_a to_o be_v intercept_v betwixt_o the_o particle_n of_o fluid_a body_n i_o intend_v not_o to_o determine_v whether_o or_o no_o such_o space_n shall_v or_o may_v be_v vacuity_n proper_o so_o call_v it_o be_v common_o sufficient_a to_o this_o second_o condition_n of_o a_o fluid_a body_n that_o in_o the_o little_a space_n intercept_v between_o those_o that_o either_o be_v or_o at_o least_o be_v consider_v as_o solid_a part_n there_o be_v none_o but_o such_o as_o will_v easy_o yield_v to_o they_o and_o can_v considerable_o resist_v the_o freedom_n of_o their_o motion_n which_o be_v premise_v to_o keep_v this_o condition_n from_o be_v mistake_v we_o may_v in_o confirmation_n of_o it_o take_v notice_n how_o snow_n which_o at_o its_o first_o fall_v be_v of_o a_o loose_a and_o open_a texture_n do_v easy_o yield_v to_o the_o impression_n of_o the_o hand_n but_o when_o by_o be_v strong_o compress_v and_o form_v into_o ball_n the_o little_a icy_a body_n it_o consist_v of_o be_v bring_v into_o a_o close_a order_n and_o many_o of_o they_o thrust_v into_o the_o little_a space_n former_o possess_v only_o by_o the_o yield_a air_n they_o become_v unable_a to_o give_v way_n to_o the_o motion_n of_o our_o hand_n as_o before_o but_o compose_v a_o hard_a and_o resist_a body_n we_o see_v also_o that_o when_o water_n be_v strong_o force_v into_o and_o keep_v compress_v in_o a_o bladder_n so_o that_o its_o exterior_a particle_n have_v not_o about_o they_o as_o before_o the_o yield_a air_n to_o give_v way_n to_o they_o when_o they_o shall_v according_a to_o their_o wont_a swell_n about_o the_o side_n of_o the_o body_n that_o endeavour_v to_o press_v it_o inward_o it_o emulate_v a_o hard_a body_n and_o resist_v such_o motion_n as_o otherwise_o it_o will_v ready_o yield_v to_o unless_o a_o more_o easy_a session_n be_v occasion_v by_o the_o retch_n of_o the_o moisten_v bladder_n itself_o and_o i_o choose_v to_o instance_n in_o a_o bladder_n distend_v with_o water_n rather_o than_o in_o one_o full_a of_o air_n because_o though_o this_o latter_a will_n also_o emulate_v a_o hard_a body_n yet_o in_o this_o case_n the_o tention_n of_o the_o bladder_n will_v perhaps_o be_v ascribe_v to_o a_o kind_n of_o spring_n which_o diverse_a experiment_n have_v teach_v we_o to_o belong_v to_o the_o air_n whence_o it_o may_v be_v say_v that_o since_o the_o enclose_v air_n will_v suffer_v itself_o to_o be_v thrust_v inward_a a_o good_a way_n though_o it_o will_v quick_o when_o permit_v fly_v out_o again_o the_o hardness_n of_o a_o well-blown_a bladder_n proceed_v not_o from_o want_n of_o the_o room_n requisite_a to_o the_o session_n of_o the_o aerial_a corpuscle_n but_o to_o the_o motion_n of_o restitution_n natural_a to_o they_o when_o like_o a_o innumerable_a company_n of_o little_a bow_n or_o spring_n be_v bend_v by_o the_o force_n that_o compress_n the_o side_n of_o the_o bladder_n they_o do_v as_o soon_o as_o it_o be_v take_v off_o stretch_v themselves_o out_o again_o some_o one_o way_n some_o another_o as_o far_o as_o be_v permit_v they_o by_o the_o imprison_a bladder_n which_o they_o thus_o every_o way_n keep_v strong_o distend_v but_o this_o have_v of_o vacant_a space_n or_o some_o yield_a matter_n about_o the_o corpuscle_n of_o a_o fluid_a body_n seem_v requisite_a to_o its_o be_v so_o but_o as_o what_o in_o a_o school-term_n one_o may_v call_v a_o removens_fw-la prohibens_fw-la i_o mean_v only_o as_o it_o obviate_v that_o impediment_n to_o their_o motion_n which_o exquisite_a fullness_n may_v be_v conceive_v to_o give_v to_o the_o various_a gliding_n among_o themselves_o of_o the_o part_n of_o a_o body_n suppose_v to_o be_v perfect_o of_o the_o same_o hardness_n or_o softness_n or_o if_o you_o please_v altogether_o equal_o dispose_v or_o indispose_v to_o yield_v to_o one_o another_o and_o although_o in_o such_o body_n as_o water_n wine_n oil_n quicksilver_n and_o the_o like_a that_o be_v general_o agree_v upon_o to_o be_v fluid_a liquor_n it_o will_v i_o presume_v be_v grant_v that_o this_o second_o condition_n we_o have_v be_v speak_v of_o may_v take_v place_n yet_o i_o will_v not_o say_v that_o it_o be_v altogether_o absurd_a to_o question_v whether_o there_o may_v not_o be_v a_o portion_n of_o matter_n consist_v of_o part_n so_o minute_n and_o so_o agitate_a and_o consequent_o so_o easy_a to_o be_v either_o crumble_v into_o yet_o small_a part_n or_o squeeze_v into_o any_o figure_n as_o occasion_n require_v that_o they_o may_v incessant_o change_v place_n among_o themselves_o and_o thereby_o constitute_v a_o most_o fluid_a body_n without_o any_o vacuity_n receptacle_n or_o yield_a matter_n about_o they_o unless_o perhaps_o it_o be_v about_o the_o exterior_a part_n of_o those_o of_o they_o that_o from_o time_n to_o time_n happen_v to_o be_v the_o superficial_a corpuscle_n of_o this_o thin_a liquor_n but_o though_o we_o have_v say_v that_o this_o may_v be_v question_v without_o absurdity_n yet_o it_o will_v not_o so_o much_o concern_v we_o in_o this_o place_n to_o examine_v whether_o the_o affirmative_a may_v be_v rational_o maintain_v as_o to_o proceed_v to_o consider_v what_o be_v far_o requisite_a to_o that_o state_n of_o matter_n we_o be_v now_o treat_v of_o especial_o the_o qualification_n yet_o unmentioned_a seem_n to_o be_v the_o principal_a of_o all_o sect_n fourteen_o for_o the_o three_o and_o chief_a condition_n of_o a_o fluid_a body_n be_v that_o the_o particle_n it_o consist_v of_o be_v agitate_a various_o and_o apart_z whether_o by_o their_o own_o innate_a and_o inherent_a motion_n or_o by_o some_o thin_a substance_n that_o tumble_v they_o about_o in_o its_o passage_n through_o they_o for_o this_o seem_v to_o be_v the_o main_a difference_n betwixt_o solid_a ice_n and_o fluid_a water_n that_o in_o the_o one_o the_o part_n whether_o by_o any_o new_o acquire_v texture_n or_o for_o want_n of_o sufficient_a heat_n to_o keep_v they_o in_o motion_n be_v at_o rest_n against_o one_o another_o resist_v those_o endeavour_n of_o our_o finger_n to_o displace_v they_o to_o which_o in_o the_o other_o the_o part_n be_v already_o in_o motion_n easy_o give_v way_n for_o whereas_o in_o the_o ice_n every_o part_n actual_o at_o rest_n must_v by_o the_o law_n of_o nature_n continue_v so_o till_o it_o be_v put_v out_o of_o it_o by_o a_o external_a force_n capable_a to_o surmount_v its_o resistance_n to_o a_o change_n of_o its_o present_a state_n in_o water_n each_o corpuscle_n be_v actual_o though_o but_o slow_o move_v we_o need_v not_o begin_v or_o produce_v a_o new_a motion_n in_o it_o but_o only_a bias_n or_o direct_v that_o which_o it_o have_v already_o which_o many_o familiar_a instance_n manifest_a to_o be_v a_o much_o easy_a task_n from_o this_o agitation_n of_o the_o small_a part_n of_o liquor_n it_o come_v to_o pass_v that_o these_o little_a body_n to_o continue_v their_o motion_n do_v almost_o incessant_o change_v place_n and_o glide_v sometime_o over_o sometime_o under_o and_o sometime_o by_o the_o side_n of_o one_o another_o hence_o also_o may_v be_v render_v a_o reason_n of_o the_o softness_n of_o fluid_a body_n that_o be_v their_o yield_n to_o the_o touch_n for_o the_o particle_n that_o compose_v they_o be_v small_a incoherent_a and_o various_o move_v it_o can_v be_v no_o difficult_a matter_n as_o we_o late_o intimate_v to_o thrust_v they_o out_o of_o those_o place_n which_o be_v already_o in_o motion_n they_o be_v dispose_v to_o quit_v especial_o there_o be_v vacant_a room_n at_o hand_n ready_a to_o admit_v they_o as_o soon_o as_o they_o be_v displace_v and_o hence_o it_o likewise_o happen_v that_o these_o little_a body_n must_v be_v very_o easy_o movable_a any_o way_n upon_o the_o motion_n of_o the_o mass_n or_o liquor_n which_o they_o compose_v and_o that_o be_v very_o small_a and_o move_v so_o many_o way_n they_o can_v but_o according_a to_o aristotle_n definition_n of_o thing_n fluid_a be_v very_o unfit_a to_o bound_v themselves_o but_o very_o easy_a to_o be_v bound_v by_o any_o other_o firm_a body_n for_o that_o hinder_v they_o from_o spread_v any_o further_o and_o yet_o to_o continue_v ●heir_o various_a and_o diffusive_a motion_n as_o much_o as_o they_o can_v
it_o touch_v for_o sometime_o the_o little_a eminency_n and_o pore_n of_o the_o surface_n of_o the_o dry_a body_n on_o or_o against_o which_o the_o liquor_n flow_v be_v of_o such_o magnitude_n and_o figure_n that_o the_o particle_n of_o the_o liquor_n find_v admittance_n into_o those_o pore_n and_o be_v detain_v there_o by_o which_o mean_n they_o usual_o soften_v it_o and_o sometime_o the_o pore_n and_o asperity_n of_o the_o dry_a body_n surface_n be_v so_o incommensurate_a in_o bigness_n &_o figure_n to_o the_o particle_n of_o the_o liquor_n that_o they_o glide_v over_o the_o surface_n without_o stick_v or_o adhere_v firm_o to_o any_o part_n of_o it_o this_o may_v be_v exemplify_v in_o quicksilver_n which_o can_v be_v say_v to_o be_v a_o humid_a body_n in_o respect_n of_o our_o hand_n or_o clothes_n or_o of_o almost_o all_o other_o body_n of_o the_o world_n upon_o who_o surface_n it_o will_v roll_n without_o leave_v any_o of_o its_o particle_n lodge_v in_o their_o pore_n or_o fasten_v to_o their_o little_a eminency_n whence_o it_o be_v call_v by_o vulgar_a chemist_n the_o water_n that_o wet_v not_o the_o hand_n but_o in_o reference_n to_o divers_a metal_n especial_o gold_n and_o tin_n quicksilver_n may_v be_v say_v to_o be_v a_o humid_a liquor_n for_o it_o insinuate_v itself_o into_o their_o pore_n and_o thereby_o mollify_v their_o body_n as_o other_o liquor_n do_v those_o that_o be_v moisten_v by_o they_o and_o even_o water_n that_o wet_v almost_o all_o other_o animal_n and_o vegetable_a and_o many_o mineral_n body_n beside_o that_o it_o be_v common_o enough_o observe_v to_o stand_v in_o almost_o globular_a drop_n upon_o cabbage-leaves_a seem_v not_o a_o humid_a liquor_n in_o relation_n to_o the_o feather_n of_o duck_n swan_n and_o other_o waterfowl_n who_o nature_n have_v design_v to_o fly_v sometime_o in_o the_o air_n and_o live_v sometime_o in_o the_o water_n she_o provident_o make_v their_o feather_n of_o such_o a_o texture_n that_o they_o do_v not_o like_o the_o feather_n of_o divers_a other_o bird_n admit_v the_o water_n which_o imbibe_v will_v make_v they_o unfit_a for_o the_o use_n of_o fly_v and_o it_o be_v observable_a that_o upon_o the_o change_n of_o texture_n in_o a_o liquor_n it_o may_v be_v bring_v to_o stick_v to_o the_o surface_n of_o a_o body_n to_o which_o before_o it_o will_v not_o adhere_v as_o may_v appear_v by_o this_o that_o though_o quicksilver_n alone_o will_v not_o stick_v to_o glass_n yet_o if_o there_o be_v mix_v with_o it_o a_o due_a proportion_n of_o lead_n tin_n and_o tin-glass_n though_o neither_o of_o they_o will_v adhere_v to_o glass_n yet_o their_o liquid_a mixture_n as_o we_o have_v often_o try_v and_o elsewhere_o specimen_n teach_v ready_o will_n even_o without_o the_o assistance_n of_o heat_n sect_n xx._n if_o it_o be_v object_v that_o this_o various_a agitation_n of_o the_o insensible_a part_n of_o water_n and_o resemble_v body_n wherein_o we_o make_v the_o nature_n of_o fluidity_n chief_o to_o consist_v be_v but_o a_o imaginary_a thing_n and_o but_o precarious_o assert_v since_o by_o our_o own_o confession_n they_o be_v so_o small_a that_o the_o particle_n themselves_o and_o more_o the_o diversity_n of_o their_o motion_n be_v imperceptible_a by_o sense_n which_o represent_v water_n for_o example_n to_o we_o as_o one_o continue_a body_n who_o part_n be_v at_o perfect_a rest_n if_o this_o i_o say_v be_v urge_v against_o our_o doctrine_n we_o shall_v not_o deny_v the_o objection_n to_o be_v plausible_a but_o must_v not_o acknowledge_v it_o to_o be_v unaswerable_a for_o of_o the_o seem_a continuity_n of_o water_n and_o other_o liquor_n this_o may_v be_v the_o reason_n that_o the_o particle_n whereof_o the_o liquor_n consist_v be_v too_o small_a to_o be_v visible_a and_o be_v not_o only_o voluble_a but_o in_o actual_a motion_n the_o pore_n or_o vacant_a space_n intercept_v between_o they_o must_v also_o be_v too_o little_a to_o be_v discern_v by_o the_o eye_n and_o consequent_o the_o body_n must_v appear_v a_o uninterrupted_a or_o continue_a one_o not_o to_o mention_v that_o be_v the_o part_n of_o the_o liquor_n less_o minute_n their_o shift_a of_o place_n will_v hardly_o be_v perceive_v by_o the_o eye_n each_o displace_v corpuscle_n be_v immediate_o succeed_v by_o another_o like_o it_o it_o be_v true_a that_o a_o heap_n of_o grain_n of_o nitre_n though_o upon_o its_o effusion_n out_o of_o the_o vessel_n it_o somewhat_o emulate_v a_o fluid_a body_n do_v yet_o when_o it_o rest_v in_o the_o vessel_n appear_v to_o be_v but_o a_o aggregate_v of_o many_o little_a incoherent_a body_n heap_v up_o together_o because_o the_o interval_n or_o hole_n leave_v between_o they_o be_v great_a enough_o to_o affect_v the_o sense_n but_o if_o the_o same_o salt_n be_v reduce_v into_o a_o alchoole_n as_o the_o chemist_n speak_v or_o impalpable_a powder_n the_o particle_n and_o intercept_a space_n b●ing_v then_o extreme_o lessen_v the_o body_n they_o make_v up_o will_n much_o more_o resemble_v a_o entire_a mass_n though_o it_o be_v look_v upon_o from_o a_o near_a distance_n and_o so_o when_o this_o powder_n be_v by_o the_o fire_n further_o break_v into_o part_n incomparable_o small_a than_o those_o of_o the_o powder_n and_o which_o consequent_o intercept_v such_o extreme_o little_a pore_n that_o not_o only_a salt-petre_n but_o some_o metal_n and_o even_o gold_n itself_o from_o which_o it_o will_v not_o be_v suppose_v that_o any_o thing_n exhale_v to_o lessen_v it_o be_v by_o some_o affirm_v for_o i_o have_v not_o myself_o diligent_o enough_o observe_v it_o and_o do_v yet_o doubt_v it_o to_o take_v up_o rather_o less_o than_o more_o room_n melt_v than_o cold_a why_o shall_v we_o not_o grant_v that_o these_o pore_n may_v be_v little_a enough_o not_o any_o where_o to_o discontinue_v the_o body_n as_o to_o sense_n sect_n xxi_o and_o that_o the_o incoherent_a part_n of_o fluid_a body_n be_v also_o diverse_o agitate_a some_o this_o way_n and_o some_o that_o way_n though_o the_o sense_n can_v discern_v it_o may_v be_v prove_v by_o their_o sensible_a operation_n particular_a for_o without_o such_o local_a motion_n how_o can_v the_o particle_n of_o water_n pierce_v into_o the_o recess_n of_o body_n and_o occasion_n those_o putrefactive_a alteration_n that_o be_v wont_a to_o be_v impute_v to_o superfluous_a moisture_n and_o how_o come_v it_o else_o to_o pass_v that_o aqueous_a liquor_n so_o ready_o diffuse_v themselves_o into_o and_o so_o exquisite_o mingle_v with_o one_o another_o as_o we_o see_v when_o red_a and_o white_a wine_n be_v in_o a_o trice_n confound_v into_o claret_n and_o without_o this_o various_a agitation_n of_o the_o part_n of_o water_n how_o can_v it_o be_v that_o lump_n of_o sugar_n or_o salt_n cast_v into_o it_o shall_v quick_o be_v so_o perfect_o dissolve_v in_o it_o that_o the_o lump_n themselves_o total_o disappear_v and_o the_o dissociate_v part_n be_v carry_v about_o every_o way_n by_o those_o of_o the_o water_n even_o from_o the_o bottom_n to_o the_o very_a top_n as_o be_v evident_a particular_o in_o sea-salt_n which_o when_o the_o superfluous_a liquor_n be_v sufficient_o exhale_a begin_v visible_o to_o coagulate_v not_o at_o the_o bottom_n but_o upon_o the_o surface_n of_o the_o water_n and_o not_o only_a salt_n but_o even_o gold_n itself_o though_o the_o heavy_a of_o body_n may_v have_v its_o part_n so_o scatter_v by_o the_o agitation_n of_o those_o water_n as_o experience_n have_v teach_v we_o and_o as_o you_o may_v easy_o try_v by_o put_v a_o little_a of_o the_o solution_n of_o gold_n make_v in_o aqua_fw-la regis_fw-la into_o 15_o or_o 20_o time_n as_o much_o fair_a water_n which_o will_v all_o thereby_o be_v immediate_o ennoble_v with_o a_o golden_a colour_n that_o the_o little_a body_n whereof_o flame_n consist_v be_v fierce_o agitate_a appear_v oftentimes_o even_o to_o the_o eye_n and_o will_v scarce_o be_v deny_v by_o he_o that_o consider_v the_o operation_n of_o it_o and_o the_o vivid_v 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observe_v in_o egg_n that_o though_o at_o their_o first_o come_v out_o of_o the_o hen_n belly_n the_o shell_n be_v soft_a yet_o soon_o after_o they_o grow_v hard_a and_o brittle_a and_o yet_o it_o appear_v not_o how_o the_o saline_a ingredient_n be_v increase_v to_o effect_v this_o speedy_a induration_n and_o to_o subjoin_v that_o by_o the_o by_o albeit_o i_o be_o not_o averse_a from_o think_v that_o the_o coldness_n of_o the_o outward_a air_n and_o its_o imbibe_v some_o of_o the_o loose_a of_o the_o moist_a part_n of_o the_o soft_a eggshell_n may_v concur_v to_o this_o effect_n yet_o there_o be_v many_o observation_n of_o eggshell_n that_o have_v be_v find_v hard_o in_o the_o womb_n of_o the_o hen._n and_o i_o well_o remember_v i_o have_v take_v notice_n that_o diverse_a egg_n not_o yet_o lay_v but_o find_v at_o one_o time_n in_o the_o body_n of_o the_o same_o hen_n be_v each_o of_o they_o furnish_v with_o a_o complete_a and_o brittle_a shell_n but_o i_o think_v i_o can_v draw_v a_o 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without_o accession_n of_o new_a salt_n it_o will_v be_v hard_a for_o chemist_n to_o prove_v that_o diamond_n and_o ruby_n which_o be_v count_v the_o hard_a body_n we_o know_v and_o at_o particular_a trial_n of_o who_o hardness_n i_o have_v sometime_o wonder_v do_v abound_v in_o salt_n at_o least_o it_o will_v not_o be_v unreasonable_a for_o we_o to_o think_v so_o till_o chemist_n have_v teach_v we_o intelligible_a and_o practicable_a way_n of_o separate_a at_o least_o some_o true_a salt_n from_o either_o of_o those_o jewel_n and_o it_o may_v be_v also_o doubt_v whether_o the_o blood_n of_o animal_n when_o it_o be_v free_a from_o serum_n do_v not_o though_o a_o liquor_n as_o much_o abound_v with_o salt_n as_o their_o skin_n or_o their_o flesh_n and_o since_o it_o be_v with_o chemist_n that_o i_o be_o now_o reason_v i_o presume_v i_o may_v be_v allow_v to_o press_v they_o with_o argument_n draw_v from_o some_o of_o the_o eminent_a writer_n of_o their_o sect._n for_o the_o generality_n of_o chemist_n and_o eu●n_o those_o that_o be_v by_o the_o rest_n and_o themselves_o too_o call_v philosopher_n not_o only_o grant_v but_o assert_v and_o maintain_v the_o transmutation_n of_o great_a quantity_n of_o quicksilver_n and_o the_o other_o ignoble_a metal_n into_o silver_n or_o gold_n by_o mean_n of_o the_o white_a or_o red_a elixir_n i_o shall_v demand_v of_o they_o whence_o it_o happen_v that_o one_o grain_n of_o the_o powder_n of_o projection_n can_v turn_v a_o whole_a pound_n of_o mercury_n into_o true_a gold_n or_o silver_n and_o consequent_o change_v a_o very_a fluid_fw-la body_n into_o a_o very_a firm_a one_o though_o the_o proportion_n of_o salt_n employ_v to_o coagulate_v the_o whole_a mass_n of_o quicksilver_n will_v not_o amount_v to_o the_o six_o thousand_o or_o seven_o thousand_o part_n of_o the_o liquor_n
only_o they_o will_v have_v a_o vitriolate_a efflorescence_n if_o i_o may_v so_o speak_v on_o their_o superficies_n as_o i_o have_v observe_v in_o divers_a other_o marchasite_n but_o they_o will_v in_o tract_n of_o time_n burst_v the_o stone_n in_o piece_n of_o which_o sort_n i_o have_v sometime_o since_o and_o i_o hope_v i_o have_v yet_o a_o bulky_a marchasite_n that_o i_o procure_v from_o a_o virtuoso_fw-la that_o live_v just_a by_o a_o vitriol-work_n whither_o these_o among_o other_o vitriol-stone_n be_v bring_v and_o where_o this_o stone_n be_v choose_v for_o its_o largeness_n be_v take_v up_o and_o careful_o keep_v by_o that_o ingenious_a person_n till_o it_o burst_v of_o itself_o and_o till_o i_o send_v for_o it_o and_o to_o satisfy_v myself_o a_o little_a further_o that_o the_o internal_a part_n of_o marchasite_n may_v be_v as_o well_o dispose_v to_o be_v vitriolate_v as_o the_o external_a i_o remember_v i_o break_v a_o hard_a marchasite_n that_o i_o have_v from_o another_o place_n and_o lay_v it_o some_o short_a time_n in_o a_o chamber-window_n i_o find_v the_o new_a superficies_n make_v by_o the_o tracture_n about_o the_o middle_n of_o the_o stone_n to_o have_v acquire_v a_o efflorescence_n of_o a_o vitriolate_a nature_n the_o other_o instance_n which_o be_v very_o odd_a and_o much_o talk_v of_o be_v this_o a_o ingenious_a gentleman_n of_o my_o acquaintance_n casual_o meet_v i_o one_o day_n tell_v i_o that_o he_o have_v a_o turquois-stone_n which_o if_o he_o be_v not_o mistake_v have_v a_o wonderful_a property_n for_o there_o be_v in_o it_o several_a spot_n of_o colour_n differ_v from_o the_o rest_n of_o the_o gem_n these_o spot_n seem_v though_o very_o slow_o to_o move_v from_o one_o part_n of_o the_o stone_n to_o the_o other_o and_o this_o he_o think_v himself_o to_o have_v take_v notice_n of_o for_o very_a many_o month_n perhaps_o a_o couple_n of_o year_n this_o relation_n seem_v so_o strange_a that_o the_o relator_n be_v not_o at_o all_o surprise_v when_o to_o ascertain_v myself_o of_o the_o truth_n of_o it_o i_o desire_v to_o have_v the_o ring_n this_o stone_n be_v set_v in_o for_o a_o while_n in_o my_o own_o keep_n to_o which_o he_o ready_o assent_v beside_o that_o i_o take_v very_o heedful_a notice_n of_o the_o situation_n of_o the_o spot_n i_o employ_v a_o very_a ingenious_a youth_n that_o then_o live_v with_o i_o and_o be_v skilled_a in_o draw_v to_o make_v the_o picture_n of_o the_o stone_n with_o the_o spot_n as_o they_o be_v then_o place_v and_o afterward_o to_o have_v a_o watchful_a eye_n upon_o it_o and_o from_o time_n to_o time_n as_o once_o perhaps_o in_o two_o or_o three_o week_n to_o draw_v a_o new_a picture_n of_o they_o by_o compare_v several_a of_o which_o picture_n it_o be_v unanimous_o conclude_v that_o the_o spot_n do_v shift_v place_n in_o the_o turquois_n as_o if_o the_o matter_n they_o consist_v of_o make_v its_o way_n through_o the_o substance_n of_o the_o stone_n as_o we_o late_o note_v that_o the_o gum_n of_o lignum_fw-la vitæ_fw-la seem_v to_o do_v through_o the_o substance_n of_o the_o wood_n and_o as_o far_o as_o we_o observe_v the_o motion_n of_o these_o spot_n be_v exceed_o slow_a and_o irregular_a though_o perhaps_o it_o may_v have_v be_v reduce_v to_o a_o somewhat_o less_o uncertainty_n be_v it_o not_o that_o by_o a_o unwelcome_a accident_n we_o be_v deprive_v of_o the_o opportunity_n of_o continue_v our_o observation_n long_o enough_o and_o this_o bring_v into_o my_o mind_n that_o the_o turquois_n be_v a_o stone_n of_o which_o ●_o have_v meet_v strange_a story_n in_o good_a author_n i_o once_o ask_v several_a question_n about_o it_o of_o a_o note_a jeweller_n and_o inquire_v among_o other_o particular_n whether_o he_o have_v not_o observe_v some_o change_n that_o seem_v spontaneous_a in_o the_o substance_n or_o colour_n of_o the_o stone_n he_o reply_v that_o in_o some_o few_o turquois_n he_o have_v observe_v two_o differ_v blews_n in_o differ_v part_n of_o the_o same_o stone_n and_o that_o one_o of_o those_o colour_n will_v by_o slow_a and_o unperceived_a degree_n invade_v and_o at_o length_n overspread_v that_o part_n of_o the_o stone_n which_o the_o other_o colour_n possess_v before_o i_o shall_v here_o add_v that_o the_o same_o gentleman_n that_o lend_v i_o the_o spot_a turquois_n show_v i_o afterward_o a_o agate_n haft_v of_o a_o knife_n where_o be_v a_o certain_a cloud_n which_o he_o tell_v i_o a_o ingenious_a person_n have_v for_o some_o year_n observe_v to_o remove_v to_o and_o fro_o in_o the_o stone_n and_o have_v a_o while_n since_o to_o convince_v the_o relator_n lend_v he_o the_o agate_n of_o who_o phaenomena_n he_o promise_v i_o a_o account_n when_o he_o shall_v have_v have_v the_o stone_n in_o his_o custody_n for_o a_o competent_a time_n till_o the_o expiration_n of_o which_o it_o may_v suffice_v to_o have_v say_v of_o this_o agate_n what_o i_o have_v now_o relate_v sect_n ix_o but_o because_o that_o diamond_n and_o glass_n be_v general_o look_v upon_o especial_o by_o chemist_n as_o body_n of_o the_o close_a and_o firm_a texture_n that_o nature_n and_o art_n afford_v if_o we_o can_v show_v a_o intestine_a motion_n even_o in_o the_o part_n of_o these_o fit_a instance_n for_o our_o purpose_n can_v not_o in_o reason_n be_v desire_v i_o shall_v venture_v to_o say_v something_o of_o each_o of_o they_o though_o what_o i_o have_v to_o say_v about_o diamond_n be_v propose_v rather_o to_o ground_v a_o suspicion_n of_o what_o may_v be_v than_o a_o demonstration_n that_o it_o must_v be_v in_o the_o first_o place_n then_o to_o remove_v that_o prejudice_n that_o may_v be_v entertain_v from_o the_o incomparable_a hardness_n of_o diamond_n ●which_v i_o confess_v experience_n have_v make_v i_o admire_v as_o if_o body_n so_o hard_a and_o solid_a can_v not_o have_v their_o part_n put_v into_o motion_n but_o by_o some_o extraordinary_a not_o to_o say_v prodigious_a force_n i_o shall_v only_o repeat_v here_o what_o i_o have_v elsewhere_o show_v that_o diamond_n be_v body_n that_o easy_o enough_o become_v actual_o electrical_a and_o that_o some_o diamond_n of_o which_o sort_n i_o have_v a_o small_a one_o by_o i_o will_v by_o rub_v upon_o a_o cloth_n be_v bring_v to_o shine_v in_o the_o dark_a the_o quist_n of_o both_o which_o transient_a quality_n require_v a_o change_n of_o texture_n even_o in_o the_o internal_a part_n and_o the_o friction_n that_o produce_v that_o change_n do_v it_o immediate_o by_o put_v the_o part_n of_o the_o stone_n into_o local-motion_n it_o may_v be_v thence_o argue_v that_o a_o very_a moderate_a force_n may_v suffice_v to_o beget_v a_o internal_a motion_n in_o the_o inward_a particle_n of_o diamond_n themselves_o and_o i_o be_o not_o sure_a but_o that_o more_o hide_a agent_n may_v make_v impression_n upon_o these_o hard_a body_n for_o in_o a_o ring_n that_o i_o be_o wont_a to_o wear_v on_o my_o little_a finger_n which_o have_v no_o diamond_n save_o one_o more_o than_o that_o shine_a one_o i_o late_o mention_v i_o have_v i_o know_v not_o how_o often_o seem_v to_o myself_o to_o observe_v a_o manifest_o great_a clearness_n and_o sparklingness_n at_o some_o time_n than_o at_o other_o though_o i_o can_v not_o refer_v it_o to_o the_o clearness_n or_o dulness_n of_o the_o weather_n the_o moisture_n or_o dryness_n of_o th●_n air_n the_o superficial_a clearness_n or_o foulness_n of_o the_o stone_n or_o any_o other_o manifest_a cause_n i_o can_v think_v of_o and_o in_o this_o i_o be_v the_o more_o incline_v to_o think_v i_o may_v not_o be_v mistake_v because_o beside_o that_o the_o notice_n i_o take_v of_o it_o be_v frequent_a i_o have_v by_o i_o a_o rough_a diamond_n just_a as_o it_o come_v from_o the_o rock_n in_o who_o electrical_a faculty_n i_o have_v take_v notice_n of_o change_n as_o to_o the_o degree_n of_o strength_n wherewith_o it_o attract_v and_o that_o within_o the_o compass_n of_o a_o very_a little_a time_n though_o i_o can_v not_o find_v any_o cause_n whereto_o i_o can_v refer_v so_o surprise_v a_o phaenomenon_n and_o i_o must_v not_o here_o omit_v that_o chance_v one_o day_n to_o show_v the_o new_o mention_v diamond_n ring_n to_o a_o very_a ingenious_a lady_n that_o use_v to_o wear_v in_o ring_n and_o bracelet_n store_n of_o those_o gem_n and_o tell_v she_o what_o change_v i_o have_v take_v notice_n of_o in_o the_o diamond_n she_o who_o have_v observe_v more_o about_o gem_n than_o any_o lady_n i_o have_v yet_o meet_v with_o appear_v but_o little_o surprise_v at_o what_o i_o tell_v she_o and_o affirm_v to_o i_o that_o she_o have_v divers_a time_n observe_v the_o like_a alteration_n in_o some_o diamond_n of_o she_o which_o sometime_o will_v look_v more_o sparkling_o than_o they_o be_v wont_a and_o sometime_o far_o more_o dull_a than_o