we_o long_o since_o meet_v with_o as_o to_o the_o main_a in_o the_o shop_n of_o stone-cutter_n which_o though_o unregarded_a by_o they_o will_v excellent_o serve_v to_o make_v out_o what_o we_o mention_v it_o for_o take_v then_o good_a alabaster_n or_o in_o defect_n of_o this_o of_o that_o white_a stone_n which_o be_v well_o know_v to_o our_o mason_n by_o the_o name_n of_o plaster_n of_o paris_n beat_v it_o very_o small_a and_o put_v as_o many_o pound_n as_o you_o please_v of_o the_o finely-searced_a powder_n into_o any_o flat-bottomed_a and_o first_o well_o heat_v vessel_n of_o brass_n or_o iron_n big_a or_o lesser_a according_a to_o the_o quantity_n you_o intend_v to_o burn_v increase_v the_o fire_n by_o degree_n till_o it_o grow_v to_o be_v strong_a and_o when_o the_o calorifick_a atom_n shall_v have_v in_o sufficient_a number_n pervade_v the_o heap_n of_o powder_n or_o if_o you_o please_v when_o the_o igneous_a corpuscle_n have_v by_o their_o numerous_a and_o brisk_a stroke_n upon_o the_o vessel_n communicate_v by_o its_o mean_n their_o agitation_n to_o the_o enclose_a powder_n and_o when_o by_o either_o of_o these_o way_n or_o both_o the_o fire_n which_o may_v also_o resolve_v some_o of_o the_o more_o spirituous_a and_o exhalable_a part_n whereof_o distillation_n have_v show_v i_o that_o alabaster_n be_v not_o destitute_a into_o vapour_n shall_v have_v put_v the_o little_a body_n it_o consist_v of_o into_o actual_a motion_n which_o will_v be_v quick_o do_v you_o shall_v see_v it_o assume_v the_o form_n of_o a_o liquor_n and_o boil_v with_o numerous_a great_a and_o confuse_a wave_n just_a like_o a_o seething-pot_n and_o if_o whilst_o it_o continue_v in_o this_o state_n you_o stir_v it_o with_o a_o stick_n it_o will_v not_o like_o a_o heap_n of_o sand_n or_o as_o itself_o will_v do_v at_o another_o time_n resist_v the_o motion_n thereof_o but_o yield_v thereto_o like_o a_o liquor_n and_o like_o it_o will_v seem_v to_o have_v something_o of_o the_o nature_n of_o a_o coherent_a body_n for_o by_o stir_v it_o any_o thing_n strong_o near_o one_o side_n of_o the_o vessel_n you_o may_v make_v the_o wave_n beat_v very_a manifesty_n against_o the_o opposite_a part_n of_o it_o and_o beside_o all_o this_o you_o may_v observe_v this_o further_a resemblance_n betwixt_o this_o boil_a matter_n and_o a_o liquor_n that_o there_o will_v fly_v up_o out_o of_o the_o pot_n great_a store_n of_o steam_n like_o smoke_n but_o that_o they_o be_v white_a which_o will_v sometime_o like_o smoke_n ascend_v for_o aught_o can_v be_v discern_v to_o the_o very_a top_n of_o the_o chimney_n and_o leave_v its_o colour_n upon_o the_o place_n by_o which_o plenty_n of_o it_o have_v past_a beside_o those_o that_o make_v this_o experiment_n often_o as_o we_o have_v take_v pleasure_n to_o do_v may_v have_v the_o opportunity_n to_o observe_v that_o when_o the_o vessel_n have_v continue_v so_o long_o over_o the_o fire_n that_o the_o contain_v alabaster_n relapse_n into_o the_o form_n of_o a_o heavy_a moveless_a powder_n by_o keep_v it_o a_o while_n long_o in_o the_o heat_n it_o will_v for_o once_o at_o least_o resume_v the_o form_n of_o a_o fluid_a body_n and_o boil_v again_o as_o before_o the_o spirituous_a steam_n who_o avolation_n promote_v the_o ebullition_n be_v not_o yet_o quite_o spend_v and_o last_o if_o when_o it_o seem_v most_o a_o liquor_n you_o take_v up_o a_o little_a of_o it_o and_o as_o nimble_o as_o you_o can_v cast_v it_o upon_o a_o sheet_n of_o white_a paper_n it_o will_v not_o at_o all_o wet_a it_o but_o immediate_o discover_v itself_o to_o be_v a_o moveless_a incoherent_a powder_n as_o it_o be_v before_o its_o be_v set_v over_o the_o fire_n whereby_o it_o i_o hope_v appear_v that_o a_o heap_n or_o aggregate_v of_o such_o little_a body_n as_o be_v neither_o spherical_a nor_o otherwise_o regular_o shape_v nor_o small_a enough_o to_o be_v below_o the_o discernment_n of_o the_o eye_n may_v without_o either_o fusion_n or_o be_v pour_v out_o be_v make_v fluid_a bare_o by_o a_o sufficient_o strong_a and_o various_a agitation_n from_o what_o cause_n soever_o that_o proceed_v of_o the_o particle_n that_o make_v it_o up_o and_o lose_v its_o fluidity_n immediate_o upon_o the_o cease_n of_o it_o thus_o have_v we_o see_v how_o very_o much_o it_o conduce_v to_o the_o make_n of_o a_o body_n fluid_fw-la that_o its_o small_a part_n be_v actual_o move_v but_o whence_o this_o motion_n proceed_v we_o shall_v not_o at_o present_a venture_n to_o determine_v for_o though_o in_o the_o example_n new_o mention_v and_o some_o other_o most_o man_n will_v be_v forward_o to_o ascribe_v the_o motion_n produce_v in_o the_o part_n of_o the_o fluid_a body_n there_o mention_v to_o the_o action_n of_o the_o fire_n whereunto_o they_o be_v expose_v yet_o what_o it_o be_v that_o put_v the_o part_n of_o fluid_a body_n in_o general_a into_o the_o motion_n requisite_a to_o make_v they_o such_o be_v a_o question_n of_o which_o the_o true_a resolution_n indeed_o be_v very_o desirable_a but_o the_o full_a debate_n of_o it_o will_v not_o i_o hope_v be_v here_o expect_v from_o i_o whilst_o i_o be_o write_v but_o note_n since_o it_o will_v engage_v i_o to_o discuss_v two_o or_o three_o of_o the_o difficult_a as_o well_o as_o the_o important_a controversy_n belong_v to_o natural_a philosophy_n for_o first_o i_o shall_v be_v oblige_v to_o consider_v whether_o motion_n or_o a_o propensity_n to_o it_o be_v a_o inherent_a quality_n belong_v to_o atom_n in_o general_a and_o not_o losable_a by_o they_o or_o whether_o all_o motion_n be_v communicate_v by_o impulse_n from_o one_o body_n to_o another_o and_o since_o those_o that_o of_o late_o have_v teach_v that_o all_o visible_a liquor_n as_o water_n oil_n quicksilver_n etc._n etc._n owe_v their_o fluidity_n chief_o to_o the_o agitation_n of_o some_o thin_a and_o restless_a matter_n which_o incessant_o permeate_n they_o do_v deduce_v the_o necessity_n of_o such_o a_o ethereal_a substance_n principal_o from_o the_o impossibility_n that_o there_o can_v be_v any_o vacuum_n proper_o so_o call_v in_o the_o universe_n wherein_o yet_o be_v very_o many_o space_n unpossessed_a by_o either_o air_n or_o grosser_n body_n than_o it_o the_o examination_n of_o this_o subtle_a matter_n will_v draw_v on_o the_o consideration_n of_o the_o nice_a controversy_n that_o perplex_v philosopher_n concern_v emptiness_n which_o it_o be_v more_o difficult_a for_o we_o to_o examine_v in_o few_o word_n than_o it_o be_v necessary_a for_o we_o to_o meddle_v with_o they_o in_o this_o place_n since_o not_o write_v of_o the_o first_o principle_n of_o physiology_n but_o of_o fluidity_n which_o be_v but_o a_o secondary_a or_o derivative_a quality_n if_o i_o may_v so_o call_v it_o it_o seem_v sufficient_a to_o give_v a_o notion_n of_o it_o that_o we_o deduce_v it_o not_o from_o the_o unintelligible_a substantial_a form_n of_o the_o fluid_a body_n but_o from_o those_o simple_a and_o general_a affection_n of_o matter_n the_o figure_n situation_n and_o motion_n of_o its_o small_a part_n sect_n xix_o wherefore_o decline_v to_o add_v any_o thing_n in_o this_o place_n to_o what_o we_o have_v otherwhere_o discourse_v concern_v the_o origine_fw-la of_o motion_n and_o the_o possibility_n or_o impossibility_n of_o a_o vacuum_n we_o will_v proceed_v to_o take_v notice_n that_o there_o be_v one_o thing_n more_o which_o we_o may_v learn_v from_o salt-petre_n touch_v the_o nature_n of_o fluidity_n and_o that_o be_v the_o distinction_n betwixt_o a_o fluid_a body_n and_o a_o wet_n liquor_n which_o be_v wont_a because_o they_o agree_v in_o many_o thing_n to_o be_v confound_v but_o inconsiderate_o enough_o for_o though_o every_o wet_n liquor_n be_v fluid_a yet_o every_o fluid_a body_n do_v not_o wet_a the_o air_n the_o aether_n and_o even_o flame_n itself_o may_v be_v proper_o call_v fluid_a body_n according_a to_o the_o notion_n of_o fluidity_n hitherto_o make_v out_o and_o yet_o will_v scarce_o by_o any_o man_n be_v call_v moist_a liquor_n and_o salt-petre_n whilst_o in_o fusion_n be_v real_o a_o liquor_n and_o so_o be_v every_o melt_a metal_n and_o yet_o these_o wet_v not_o the_o body_n they_o touch_v as_o do_v water_n and_o other_o wet_v liquor_n which_o be_v fluid_a body_n with_o this_o peculiar_a qualification_n that_o they_o stick_v to_o and_o moisten_v the_o dry_a body_n which_o they_o touch_v or_o at_o least_o abound_v with_o some_o part_n which_o be_v separate_v from_o the_o rest_n and_o reduce_v to_o a_o liquor_n will_v do_v so_o and_o according_a to_o this_o notion_n methinks_v it_o may_v be_v conceive_v that_o the_o humidity_n of_o a_o body_n be_v but_o a_o relative_a thing_n and_o depend_v chief_o upon_o the_o congruity_n or_o incongruence_n of_o the_o component_a particle_n of_o the_o liquor_n in_o reference_n to_o the_o pore_n of_o those_o particular_a body_n that_o
especial_o their_o gravity_n at_o least_o here_o about_o the_o earth_n equal_o depress_v and_o thereby_o level_v as_o to_o sense_n their_o uppermost_a superficies_n they_o must_v necessary_o move_v to_o and_o fro_o till_o their_o progress_n be_v stop_v by_o the_o internal_a surface_n of_o the_o vessel_n which_o by_o terminate_a their_o progress_n or_o motion_n towards_o the_o same_o part_n do_v consequent_o necessitate_v the_o liquor_n those_o little_a body_n compose_v to_o accommodate_v itself_o exact_o for_o aught_o the_o eye_n be_v able_a to_o discern_v to_o the_o contrary_a to_o its_o own_o figure_n sect_n xv._n this_o short_a and_o general_a account_n of_o fluidity_n may_v we_o hope_v be_v as_o well_o further_o explicate_v and_o illustrate_v as_o confirm_v by_o the_o follow_a instance_n and_o experiment_n and_o therefore_o we_o shall_v forthwith_o proceed_v to_o them_o and_o it_o will_v be_v fit_a to_o mention_v in_o the_o first_o place_n those_o that_o be_v afford_v we_o by_o the_o body_n our_o author_n treat_v of_o salt-petre_n they_o have_v occasion_v our_o writing_n about_o this_o subject_a salt-petre_n then_o may_v be_v make_v fluid_a two_o several_a way_n either_o by_o or_o without_o a_o liquor_n by_o the_o intervention_n of_o a_o liquor_n it_o put_v on_o the_o form_n of_o a_o fluid_a body_n when_o be_v dissolve_v in_o water_n or_o aqueous_a juice_n it_o be_v not_o by_o the_o eye_n distinguishable_a from_o the_o solvent_a body_n and_o appear_v as_o fluid_a as_o it_o which_o seem_v to_o proceed_v from_o hence_o that_o the_o agitate_a particle_n of_o the_o water_n pierce_v into_o the_o joint_n or_o commissure_v of_o the_o corpuscle_n of_o the_o salt_n do_v disjoin_v they_o and_o thereby_o divide_v the_o nitre_n into_o part_n so_o small_a that_o it_o be_v easy_a for_o those_o of_o the_o water_n wherewith_o they_o be_v associate_v not_o only_o to_o support_v they_o but_o move_v they_o to_o and_o fro_o whence_o it_o come_v to_o pass_v that_o these_o particle_n be_v so_o small_a and_o swim_v some_o one_o way_n some_o another_o in_o the_o yield_a body_n of_o water_n make_v no_o such_o resistâ—nce_n against_o the_o motion_n either_o of_o a_o man_n hand_n or_o other_o external_a body_n that_o strive_v to_o displace_v they_o as_o they_o do_v in_o their_o saline_a form_n but_o that_o with_o much_o less_o liquor_n a_o nitrous_a body_n may_v be_v render_v fluid_a may_v appear_v to_o he_o that_o shall_v expose_v such_o fix_a nitre_n as_o our_o author_n teach_v to_o make_v to_o the_o moist_a air_n of_o a_o cellar_n for_o there_o it_o will_v run_v per_fw-la deliquium_fw-la as_o chemist_n speak_v into_o a_o liquor_n which_o consist_v of_o no_o more_o aqueous_a particle_n than_o be_v necessary_a to_o keep_v the_o saline_a one_o which_o seem_v to_o be_v much_o small_a than_o those_o of_o unanalyze_v nitre_n in_o the_o agitation_n requisite_a to_o fluidity_n sect_n xvi_o and_o hence_o we_o may_v proceed_v to_o consider_v what_o fluidity_n salt-petre_n be_v capable_a of_o without_o the_o intercurrence_n of_o a_o liquor_n and_o this_o may_v be_v twofold_a for_o first_o if_o it_o be_v beat_v into_o a_o impalpable_a powder_n this_o powder_n when_o it_o be_v pour_v out_o will_v emulate_v a_o liquor_n by_o reason_n that_o the_o smallness_n and_o incoherence_n of_o the_o part_n do_v both_o make_v they_o easy_a to_o be_v put_v into_o motion_n and_o make_v the_o pore_n they_o intercept_v so_o small_a that_o they_o seem_v not_o at_o a_o distance_n to_o interrupt_v the_o unity_n or_o continuity_n of_o the_o mass_n or_o body_n but_o this_o be_v but_o a_o imperfect_a fluidity_n both_o because_o the_o little_a grain_n or_o corpuscle_n of_o salt_n though_o easy_o enough_o movable_a be_v not_o always_o in_o actual_a motion_n and_o because_o they_o continue_v yet_o so_o big_a that_o both_o they_o and_o the_o space_n intercept_v betwixt_o they_o be_v near_o at_o hand_n perceivable_a by_o sense_n but_o if_o with_o a_o strong_a fire_n you_o melt_v this_o powder_a nitre_n than_o each_o of_o the_o saline_a corpuscle_n be_v subdivide_v into_o i_o know_v not_o how_o many_o other_o and_o these_o insensible_a part_n be_v various_o agitate_a by_o the_o same_o heat_n both_o which_o may_v appear_v by_o their_o oftentimes_o pierce_v the_o crucible_n after_o fusion_n wherein_o they_o lie_v very_o quiet_o before_o it_o the_o whole_a body_n will_v appear_v a_o perfect_a liquor_n and_o be_v think_v such_o by_o any_o beholder_n that_o shall_v judge_v of_o it_o but_o by_o the_o eye_n and_o such_o also_o be_v the_o fluidity_n of_o melt_a metal_n in_o which_o when_o they_o be_v bring_v to_o fusion_n in_o vast_a quantity_n i_o have_v see_v the_o surface_n wave_v like_o that_o of_o boil_a water_n and_o sometime_o parcel_n of_o liquor_n throw_v up_o a_o pretty_a way_n into_o the_o air._n and_o not_o only_a fire_n and_o other_o actual_o and_o manifest_o hot_a body_n be_v able_a to_o make_v some_o hard_a one_o fluid_a but_o it_o seem_v also_o that_o some_o body_n may_v be_v bring_v to_o fluidity_n by_o other_o which_o to_o the_o touch_n appear_v cold_a if_o they_o be_v but_o fit_v to_o change_v the_o texture_n of_o the_o hard_a body_n and_o put_v its_o inflected_a part_n into_o a_o convenient_a motion_n as_o may_v be_v see_v in_o the_o chemical_a experiment_n of_o turn_v the_o brittle_a body_n of_o camphire_n into_o a_o oil_n for_o the_o time_n by_o let_v it_o lie_v upon_o aqua_fw-la fortis_fw-la which_o perhaps_o bend_v and_o complicate_v the_o former_o rigid_a particle_n and_o put_v they_o into_o such_o a_o motion_n that_o they_o do_v as_o well_o glide_v along_o as_o somewhat_o twine_v about_o each_o other_o and_o i_o further_o try_v not_o have_v find_v it_o mention_v by_o the_o chemist_n that_o camphire_n may_v by_o a_o dexterous_a application_n of_o heat_n be_v bring_v in_o close_a glass_n both_o to_o flow_v and_o to_o boil_v almost_o like_a oil_n it_o be_v true_a that_o these_o liquor_n take_v from_o the_o fire_n quick_o lose_v that_o name_n and_o grow_v solid_a again_o but_o the_o duration_n of_o a_o thing_n be_v not_o always_o necessary_a to_o denominate_v it_o such_o for_o the_o leaf_n of_o a_o tree_n for_o instance_n whilst_o it_o flourish_v may_v be_v as_o true_o green_a as_o a_o emerald_n though_o the_o leaf_n will_v after_o a_o while_n wither_v and_o turn_v yellow_a which_o the_o stone_n will_v never_o do_v and_o in_o cold_a climate_n where_o lake_n etc._n etc._n at_o other_o time_n navigable_a be_v sometime_o freeze_v so_o hard_o that_o cart_n and_o even_o great_a ordnance_n may_v safe_o be_v draw_v over_o they_o ice_n and_o water_n be_v the_o one_o a_o stable_n and_o the_o other_o a_o liquid_a body_n notwithstanding_o that_o the_o same_o portion_n of_o matter_n which_o at_o one_o time_n be_v freeze_v into_o a_o hard_a and_o solid_a substance_n be_v a_o little_a before_o a_o fluid_a body_n and_o now_o and_o then_o in_o a_o very_a short_a time_n will_v be_v thaw_v into_o a_o liquor_n again_o sect_n xvii_o i_o know_v not_o whether_o it_o be_v requisite_a to_o take_v notice_n that_o the_o fluidity_n which_o salt-petre_n acquire_v upon_o fusion_n by_o fire_n seem_v very_o much_o of_o kin_n to_o that_o which_o be_v acquire_v by_o solution_n in_o water_n but_o if_o fusion_n be_v make_v rather_o by_o the_o ingress_n and_o transcursion_n of_o the_o atom_n of_o fire_n themselves_o than_o by_o the_o bare_a propagation_n of_o that_o motion_n with_o which_o the_o agitate_a particle_n that_o compose_v fire_n beat_v upon_o the_o outside_n of_o the_o vessel_n that_o contain_v the_o matter_n to_o be_v melt_v in_o such_o case_n i_o say_v both_o those_o kind_n or_o manner_n of_o fluidity_n new_o ascribe_v to_o salt-petre_n will_v appear_v to_o be_v cause_v by_o the_o pervasion_n of_o a_o foreign_a body_n only_o in_o dissolution_n the_o fluid_a body_n be_v a_o visible_a and_o palpable_a liquor_n and_o consequent_o more_o gross_a whereas_o in_o fusion_n the_o fluid_a substance_n that_o permeate_n it_o be_v more_o thin_a and_o subtle_a and_o divide_v it_o into_o much_o small_a part_n and_o so_o add_v very_o little_a to_o its_o bulk_n sect_n xviii_o but_o because_o some_o scruple_n may_v possible_o arise_v about_o this_o matter_n from_o hence_o that_o the_o powder_n of_o nitre_n how_o fine_a soever_o seem_v fluid_a but_o just_a whilst_o it_o be_v pour_v out_o and_o even_o then_o be_v but_o very_o imperfect_o so_o and_o that_o as_o for_o fusion_n that_o be_v wont_a to_o reduce_v the_o melt_a body_n to_o a_o new_a and_o permanent_a state_n as_o the_o formerly-mentioned_a powder_n of_o salt-petre_n which_o before_o fusion_n be_v but_o a_o heap_n of_o incoherent_a particle_n be_v by_o it_o make_v a_o solid_a and_o considerable_o hard_a body_n to_o prevent_v i_o say_v or_o remove_v such_o scruple_n we_o will_v set_v down_o one_o experiment_n that_o
in_o a_o convenient_a quantity_n of_o water_n do_v upon_o its_o recoagulation_n so_o dispose_v of_o the_o aqueous_a particle_n among_o its_o own_o saline_n one_o that_o if_o the_o experiment_n be_v well_o and_o careful_o make_v almost_o the_o whole_a mixture_n will_v shoot_v together_o into_o fine_a crystal_n that_o seem_v to_o be_v of_o a_o uniform_a substance_n and_o be_v consistent_a enough_o to_o be_v even_o brittle_a and_o to_o endure_v to_o be_v pulverise_v siâ—ted_a etc._n etc._n though_o the_o concretion_n may_v have_v such_o a_o proportion_n of_o water_n in_o it_o that_o as_o i_o remember_v when_o the_o experiment_n succeed_v well_o from_o three_o part_n of_o water_n and_o but_o one_o of_o salt_n i_o have_v about_o four_o part_n of_o crystal_n i_o need_v not_o tell_v you_o that_o this_o salt_n sâ—ems_v to_o have_v a_o somewhat_o more_o than_o ordinary_a resemblance_n of_o a_o â—rue_a coagulum_fw-la since_o it_o reduce_v so_o much_o water_n into_o a_o stable_a consistence_n yet_o it_o do_v in_o no_o contemptible_a proportion_n material_o concur_v to_o the_o body_n produce_v but_o i_o may_v hereafter_o which_o i_o must_v not_o do_v now_o entertain_v you_o about_o a_o salt_n of_o a_o differ_a kind_n from_o this_o and_o which_o put_v i_o upon_o consider_v whether_o there_o may_v not_o be_v a_o coagulum_fw-la more_o proper_o so_o call_v of_o common_a water_n which_o may_v in_o a_o very_a small_a proportion_n operate_v upon_o a_o great_a quantity_n of_o that_o liquor_n as_o runnet_n do_v on_o milk_n i_o have_v not_o yet_o examine_v whether_o it_o will_v be_v sufficient_a to_o refer_v mere_o to_o the_o second_o and_o three_o way_n late_o mention_v of_o make_v body_n become_v stable_a in_o the_o phaenomena_n i_o be_o about_o to_o speak_v of_o or_o whether_o it_o may_v be_v reasonable_o suppose_v and_o add_v as_o a_o five_o way_n that_o the_o body_n to_o be_v coagulate_v may_v in_o great_a part_n be_v bring_v to_o be_v so_o by_o so_o act_v upon_o the_o body_n to_o which_o they_o be_v put_v that_o the_o agent_n liquor_n if_o i_o may_v so_o speak_v do_v by_o its_o action_n communicate_v to_o the_o subject_n it_o work_v on_o or_o lose_v upon_o some_o other_o account_v some_o subtle_a part_n who_o absence_n fit_v the_o dispose_v remain_v fluid_a for_o such_o a_o cohesion_n as_o may_v suffice_v to_o make_v a_o body_n be_v though_o very_o soft_a yet_o consistent_a but_o however_o it_o will_v not_o be_v amiss_o to_o take_v some_o notice_n of_o effect_n which_o what_o ever_o the_o cause_n be_v belong_v to_o the_o history_n of_o fluidity_n and_o firmness_n i_o some_o year_n since_o prepare_v a_o substance_n of_o a_o whitish_a colour_n which_o will_v not_o only_o destroy_v the_o fluidity_n of_o some_o other_o liquor_n but_o will_v give_v a_o consistency_n to_o a_o notable_a proportion_n of_o oil_n of_o vitriol_n itself_o though_o the_o parâ—s_n of_o this_o liquor_n be_v presume_v upon_o the_o score_n of_o its_o corrosiveness_n and_o iâ—s_a aptness_n to_o grow_v very_o hot_a with_o many_o other_o body_n and_o make_v they_o smoke_n to_o be_v very_o vehement_o agitate_v and_o i_o remember_v that_o i_o sometime_o show_v the_o curious_a a_o glass_n vial_n well_o stop_v upon_o thâ—_n bottom_n of_o which_o lie_v a_o little_a of_o this_o new_o mention_v whitish_a powder_n ouâ—r_o which_o theâ—e_n be_v a_o considerable_a proportion_n of_o oil_n of_o vâ—â—riâ—l_n in_o a_o consistent_a form_n without_o seem_v to_o have_v any_o thing_n to_o do_v with_o the_o powder_n as_o indeed_o it_o have_v be_v only_o pour_v upon_o it_o and_o suffer_v to_o stand_v in_o the_o cold_a for_o some_o time_n which_o if_o i_o mistake_v not_o be_v a_o day_n or_o two_o at_o the_o end_n of_o which_o the_o above_o mention_v change_n be_v wrought_v on_o the_o liquor_n by_o the_o powder_n which_o do_v not_o appear_v to_o be_v dissolve_v thereby_o which_o phaenomenon_n seem_v indeed_o to_o argue_v that_o there_o happen_v in_o this_o experiment_n that_o be_v not_o the_o only_a one_o of_o the_o kind_n i_o then_o make_v something_a like_o the_o coagulation_n former_o mention_v of_o quicksilver_n by_o the_o vapour_n of_o lead_n some_o subtle_a part_n of_o the_o coagulator_n if_o i_o may_v so_o call_v it_o invisible_o pervade_v the_o liquor_n who_o fluidity_n be_v to_o be_v suspend_v though_o it_o seem_v not_o improbable_a to_o i_o that_o the_o effect_n produce_v may_v depend_v upon_o both_o cause_n this_o new_o express_v and_o the_o other_o a_o little_a abovementioned_a where_o i_o guess_v that_o a_o change_n of_o texture_n and_o thereby_o of_o consistence_n in_o the_o menstruum_fw-la may_v be_v the_o result_n of_o the_o operation_n of_o the_o menstruum_fw-la and_o the_o body_n it_o act_v upon_o and_o because_o this_o powder_n be_v not_o so_o easy_a to_o be_v prepare_v i_o shall_v add_v that_o you_o may_v though_o not_o so_o well_o as_o by_o the_o new_o mention_v way_n see_v the_o coagulation_n of_o a_o menstruum_fw-la upon_o a_o firm_a body_n which_o it_o do_v not_o seem_v to_o dissolve_v by_o the_o ensue_a experiment_n take_v crystal_n of_o salt-petre_n very_o well_o dry_v but_o not_o powder_v and_o gentle_o pour_v on_o it_o in_o a_o glass_n vial_n some_o good_a oil_n of_o vitriol_n till_o it_o swim_v about_o half_a a_o inch_n or_o perhaps_o more_o above_o the_o salt_n leave_v the_o vial_n close_v with_o a_o cover_n of_o paper_n in_o a_o cool_a quiet_a place_n where_o it_o may_v not_o be_v shake_v and_o if_o the_o trial_n succeed_v with_o you_o as_o do_v it_o with_o i_o the_o liquor_n will_v though_o slow_o so_o settle_v itself_o about_o the_o nitre_n that_o though_o you_o incline_v the_o vial_n to_o any_o side_n or_o perhaps_o turn_v it_o upside_o down_o it_o will_v not_o run_v out_o and_o i_o have_v sometime_o take_v notice_n of_o little_a saline_n body_n and_o as_o it_o be_v fibres_n that_o seem_v to_o keep_v the_o part_n of_o the_o mixture_n unite_v together_o i_o make_v also_o some_o other_o trial_n to_o coagulate_v unflegmatick_a a._n f._n upon_o nitre_n and_o some_o other_o body_n the_o phaenomena_n of_o which_o trial_n do_v not_o oblige_v i_o to_o renounce_v the_o late_o mention_v conjecture_n about_o the_o cause_n of_o such_o change_n of_o consistency_n in_o liquor_n as_o i_o have_v be_v speak_v of_o for_o i_o still_o think_v it_o high_o probable_a that_o the_o best_a coagulator_n i_o have_v meet_v with_o act_n but_o as_o a_o fine_a sort_n of_o runnet_n which_o in_o a_o inconsiderable_a quantity_n real_o disperse_v material_a part_n of_o itself_o through_o the_o liquor_n to_o be_v wrought_v on_o though_o these_o when_o the_o coagulator_n be_v a_o consistent_a body_n be_v perchance_o so_o few_o or_o subtle_a as_o not_o to_o make_v any_o visible_a diminution_n of_o the_o body_n it_o part_n with_o a_o more_o eminent_a example_n to_o our_o present_a purpose_n may_v be_v afford_v we_o sometime_o for_o i_o be_o sure_a the_o experiment_n will_v not_o always_o succeed_v by_o the_o notable_a way_n of_o coagulate_a quicksilver_n and_o thereby_o turn_v it_o from_o a_o fluid_a into_o a_o firm_a body_n by_o the_o vapour_n of_o melt_a lead_n in_o which_o when_o it_o be_v take_v off_o the_o fire_n but_o before_o it_o be_v quite_o grow_v hard_o again_o a_o little_a cavity_n must_v be_v make_v with_o a_o pebble_n or_o a_o stick_n that_o the_o quicksilver_n tie_v up_o in_o a_o rag_n may_v be_v nimble_o put_v into_o that_o hole_n and_o be_v congeal_v by_o the_o permeate_a stream_n of_o the_o cool_a lead_n which_o effect_n may_v be_v less_o hopeful_o expect_v by_o the_o way_n wont_a to_o be_v prescribe_v by_o author_n most_o of_o who_o i_o doubt_v never_o make_v trial_n of_o it_o then_o by_o another_o that_o i_o have_v practise_v and_o may_v on_o another_o occasion_n show_v you_o and_o that_o some_o metalline_a steam_n do_v real_o invade_v the_o quicksilver_n seem_v probable_a by_o the_o waste_n of_o lead_n by_o fusion_n and_o by_o the_o operation_n ascribe_v by_o chemist_n to_o the_o fume_n of_o lead_n upon_o gold_n about_o which_o i_o may_v elsewhere_o tell_v you_o what_o be_v come_v to_o my_o knowledge_n and_o i_o remember_v that_o not_o long_o since_o a_o ingenious_a physician_n of_o my_o acquaintance_n keep_v some_o lead_n long_o in_o fusion_n to_o reduce_v it_o per_fw-la se_fw-la into_o a_o calx_fw-la and_o hold_v his_o head_n often_o over_o rhe_n melt_v pot_n to_o observe_v the_o alteration_n of_o the_o metal_n be_v sudden_o purge_v diverse_a time_n both_o upward_o and_o downward_o which_o both_o he_o and_o i_o ascribe_v to_o the_o saturnine_a exhalation_n and_o though_o i_o suspect_v the_o congelation_n formerly-mentioned_a may_v proceed_v from_o the_o egress_n of_o some_o subtle_a substance_n that_o former_o agitate_a but_o after_o desert_v the_o mercuriaâ—_n corpuscle_n yet_o that_o the_o concretion_n of_o
so_o improbable_a as_o some_o thought_n it_o to_o prove_v negative_n direct_o be_v wont_a as_o you_o well_o know_v to_o be_v no_o easy_a task_n and_o especial_o in_o such_o case_n as_o this_o you_o will_v not_o i_o presume_v expect_v that_o i_o shall_v attempt_v the_o prove_v of_o my_o conjecture_n otherwise_o than_o by_o show_v positive_o that_o some_o of_o those_o body_n which_o we_o think_v to_o have_v their_o part_n most_o at_o rest_n be_v not_o exempt_v from_o have_v intestine_a motion_n in_o they_o since_o it_o will_v be_v consequent_a to_o such_o a_o proof_n that_o it_o must_v be_v probable_a that_o in_o other_o body_n who_o solidity_n be_v confess_v to_o be_v inferior_a the_o component_a particle_n be_v not_o in_o a_o state_n of_o perfect_a rest._n sect_n ii_o if_o it_o be_v necessary_a and_o expedient_a i_o shall_v begin_v my_o argument_n by_o say_v something_o against_o absolute_a rest_n in_o favour_n of_o the_o contrary_a opinion_n by_o argue_v agrave_n priori_fw-la as_o they_o speak_v from_o the_o constitution_n of_o the_o world_n whether_o we_o consider_v it_o according_a to_o the_o epicurean_a or_o the_o cartesian_a hypothesis_n of_o the_o origine_fw-la of_o thing_n for_o the_o epicurean_o suppose_v this_o world_n to_o be_v produce_v by_o the_o casual_a concourse_n of_o atom_n and_o ascribe_v to_o every_o particular_a atom_n a_o innate_a and_o unlooseable_a mobility_n or_o rather_o a_o actual_a motion_n or_o a_o restless_a endeavour_n after_o it_o it_o be_v consonant_a to_o think_v that_o though_o in_o concretion_n they_o so_o entangle_v one_o another_o that_o they_o can_v in_o a_o short_a time_n or_o a_o visible_a manner_n clear_v themselves_o from_o one_o another_o yet_o they_o do_v incessant_o strive_v to_o dis-entangle_a themselves_o and_o get_v away_o by_o which_o mean_v there_o be_v always_o in_o the_o atom_n even_o of_o solid_a body_n actual_a endeavour_n of_o each_o of_o the_o distinct_a atom_n to_o extricate_v itself_o from_o the_o rest_n which_o endeavour_v usual_o at_o last_o succeed_v whence_o come_v the_o decay_n and_o destruction_n of_o body_n and_o in_o the_o mean_a while_o these_o perpetual_a and_o contrary_a endeavour_n produce_v intestine_a commotion_n in_o the_o internal_a part_n of_o the_o body_n wherein_o these_o atom_n be_v imprison_v on_o the_o other_o side_n according_a to_o the_o cartesian_a doctrine_n the_o materia_fw-la subtilis_fw-la that_o constant_o pass_v like_o a_o stream_n through_o the_o pore_n even_o of_o the_o solid_a body_n may_v well_o be_v suppose_v in_o its_o passage_n to_o be_v continual_o shake_v or_o otherwise_o agitate_v the_o insensible_a particle_n that_o make_v up_o the_o body_n that_o seem_v to_o be_v at_o rest_n without_o discover_v their_o motion_n to_o the_o eye_n as_o when_o in_o summer_n time_n to_o explain_v myself_o by_o a_o comparison_n a_o gentle_a breath_n of_o wind_n pass_v through_o a_o grove_n remove_v a_o pretty_a way_n off_o from_o the_o spectator_n though_o his_o eye_n discern_v no_o change_n in_o the_o grove_n he_o look_v on_o yet_o the_o wind_n as_o it_o blow_v through_o the_o tree_n will_v shake_v some_o of_o the_o branch_n as_o well_o as_o the_o flexible_a twig_n and_o not_o only_o blow_v the_o leave_v into_o various_a posture_n but_o blow_v some_o of_o they_o quite_o away_o i_o may_v easy_o enlarge_v on_o this_o subject_a but_o have_v elsewhere_o do_v it_o on_o another_o occasion_n i_o think_v it_o may_v be_v now_o more_o proper_a to_o satisfy_v some_o of_o the_o company_n who_o be_v yet_o entangle_v with_o the_o same_o prejudice_n with_o many_o other_o very_o learned_a man_n who_o look_v upon_o it_o as_o a_o precarious_a and_o chimaerical_a fancy_n of_o the_o atomist_n to_o imagine_v that_o in_o solid_a and_o as_o to_o sense_n quiescent_a body_n there_o shall_v be_v any_o intestine_a motion_n of_o the_o component_a particle_n neither_o the_o motion_n nor_o the_o corpuscle_n themselves_o be_v to_o be_v see_v and_o both_o of_o they_o be_v therefore_o as_o well_o incredible_a as_o invisible_a a_o solemn_a debate_n of_o the_o whole_a question_n about_o the_o minuteness_n of_o atom_n belong_v not_o to_o this_o place_n where_o it_o may_v suffice_v to_o answer_v the_o objection_n sect_n iii_o and_o first_o as_o i_o have_v elsewhere_o hint_v it_o may_v appear_v by_o divers_a of_o the_o phaenomena_n abovecited_a in_o the_o history_n of_o fluidity_n that_o when_o water_n and_o several_a other_o liquor_n seem_v to_o be_v continue_v mass_n of_o matter_n and_o to_o be_v as_o much_o at_o rest_n as_o the_o very_a glass_n that_o contain_v they_o their_o constituent_a corpuscle_n be_v in_o a_o actual_a and_o various_a though_o slow_a and_o unperceived_a motion_n next_o that_o there_o may_v be_v likewise_o such_o a_o motion_n in_o the_o minute_n part_n of_o silver_n and_o iron_n themselves_o may_v be_v easy_o argue_v by_o heat_n those_o metal_n till_o they_o come_v to_o be_v almost_o red_a hot_a for_o than_o though_o the_o eye_n can_v discern_v no_o motion_n of_o the_o corpuscle_n those_o metal_n consist_v of_o yet_o their_o be_v able_a to_o burn_v those_o that_o hold_v they_o in_o their_o naked_a hand_n show_v that_o their_o brisk_a motion_n may_v be_v discover_v by_o the_o help_n of_o the_o touch_n and_o if_o you_o spit_v upon_o they_o the_o liquor_n will_v boil_v as_o if_o it_o be_v over_o the_o fire_n and_o lest_o it_o shall_v be_v object_v that_o so_o anomalous_a and_o violent_a a_o agent_n as_o the_o fire_n be_v necessary_a to_o these_o trial_n i_o shall_v add_v that_o provide_v the_o minute_n part_n be_v sufficient_o agitate_a it_o matter_n not_o whether_o the_o motion_n be_v produce_v by_o fire_n or_o no_o for_o by_o the_o nimble_o hammer_v of_o iron_n or_o silver_n you_o may_v put_v the_o minute_n part_n into_o such_o a_o motion_n as_o will_v make_v the_o metal_n very_a hoâ—_n to_o the_o touch_n and_o be_v communicate_v to_o hospital_n or_o water_n will_v excite_v bubble_n and_o scatter_v the_o dissipate_v part_n of_o that_o liquor_n into_o the_o air_n in_o the_o form_n of_o smoke_n or_o vapour_n nay_o i_o elsewhere_o show_v how_o i_o have_v easy_o excite_v a_o very_a sensible_a though_o not_o a_o visible_a agitation_n and_o heat_n in_o the_o internal_a part_n of_o a_o metal_n bare_o by_o my_o naked_a hand_n without_o any_o external_a instrument_n whatsoever_o and_o whereas_o it_o may_v be_v object_v that_o though_o the_o motion_n already_o generate_v be_v unseen_a yet_o we_o may_v discern_v a_o change_n of_o the_o component_a corpuscle_n of_o a_o body_n which_o be_v in_o the_o act_n of_o alter_v its_o texture_n and_o introduce_v a_o new_a alteration_n or_o quality_n in_o the_o body_n to_o be_v wrought_v on_o or_o destroy_v some_o pre-existent_a quality_n i_o brief_o answer_v for_o i_o will_v not_o here_o repeat_v what_o i_o have_v elsewhere_o say_v of_o this_o point_n by_o this_o clear_a experiment_n that_o though_o your_o eye_n can_v discern_v no_o change_n in_o the_o outward_a and_o visible_a much_o less_o in_o the_o more_o latent_fw-la and_o internal_a corpuscle_n of_o iron_n a_o vigorous_a loadstone_n by_o pass_v along_o its_o axis_n from_o one_o pole_n of_o the_o stone_n to_o the_o other_o and_o back_o again_o yet_o the_o texture_n of_o the_o iron_n be_v by_o that_o action_n of_o the_o loadstone_n so_o change_v that_o it_o acquire_v and_o then_o lose_v those_o admirable_a quality_n we_o call_v the_o attractive_a and_o directive_n virtue_n or_o faculty_n peculiar_a to_o magnetical_a body_n and_o to_o show_v you_o that_o the_o invisible_a motion_n even_o of_o metalline_a body_n may_v be_v quick_a and_o brisk_a enough_o and_o may_v be_v sensible_a though_o not_o visible_a we_o shall_v need_v to_o consider_v but_o the_o state_n of_o a_o good_a bell_n so_o long_o after_o the_o clapper_n have_v strike_v it_o that_o no_o shake_v or_o other_o motion_n be_v to_o be_v see_v in_o the_o body_n of_o the_o bell_n itself_o and_o yet_o it_o cause_v in_o the_o air_n a_o odd_a 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the_o air_n though_o but_o in_o a_o chamber_n i_o find_v its_o surface_n powder_v with_o little_a grain_n of_o vitriol_n as_o both_o their_o colour_n and_o their_o taste_n inform_v i_o now_o whither_o or_o no_o we_o suppose_v that_o the_o fire_n do_v put_v the_o part_n of_o the_o amalgama_n into_o any_o last_a agitation_n yet_o the_o mass_n be_v almost_o fluid_a after_o it_o be_v take_v from_o the_o fire_n its_o part_n may_v according_a to_o our_o notion_n of_o fluidity_n be_v well_o suppose_v to_o have_v some_o kind_n of_o motion_n among_o themselves_o and_o it_o will_v not_o be_v deny_v that_o the_o fire_n may_v concur_v with_o other_o thing_n to_o make_v that_o motion_n convenient_a to_o cause_v the_o part_n to_o fasten_v themselves_o to_o one_o another_o for_o that_o â—he_v motion_n wherein_o a_o soft_a and_o almost_o fluid_a body_n be_v once_o put_v may_v possible_o tend_v to_o harden_v it_o long_o after_o that_o motion_n seem_v to_o be_v extinct_a may_v be_v make_v probable_a 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the_o clear_a liquor_n i_o gentle_o pour_v off_o when_o the_o experiment_n be_v to_o be_v make_v and_o to_o this_o i_o put_v a_o convenient_a proportion_n of_o very_o well_o dephlegm_v spirit_n of_o wine_n which_o if_o it_o be_v pour_v on_o very_o slow_o and_o wary_o may_v be_v make_v for_o a_o pretty_a while_n to_o swim_v upon_o it_o in_o the_o form_n of_o a_o distinct_a liquor_n but_o if_o by_o a_o few_o shake_v i_o mingle_v they_o together_o they_o will_v present_o unite_v into_o a_o concretion_n of_o which_o when_o the_o experiment_n succeed_v very_o well_o as_o it_o do_v when_o i_o show_v it_o to_o the_o abovementioned_a assembly_n not_o one_o drop_n will_v fall_v to_o the_o ground_n upon_o turn_v up_o the_o wide_a mouth_n glass_n it_o shall_v be_v make_v in_o and_o hold_v it_o with_o the_o mouth_n direct_o downward_o and_o this_o so_o hasty_o produce_v consistence_n may_v be_v durable_a enough_o if_o it_o be_v careful_o look_v to_o but_o to_o dispatch_v the_o whole_a experiment_n in_o a_o short_a time_n i_o take_v a_o little_a strong_a spirit_n of_o nitre_n which_o perhaps_o be_v not_o needful_a if_o good_a aqua_fw-la fortis_fw-la be_v at_o hand_n and_o put_v about_o a_o equal_a or_o other_o convenient_a quantity_n of_o it_o to_o this_o mixture_n i_o nimble_o stir_v it_o and_o the_o spirit_n together_o whereupon_o the_o whole_a be_v reduce_v in_o a_o very_a few_o minute_n to_o a_o transparent_a liquor_n n._n b._n though_o i_o have_v divers_a time_n make_v and_o show_v this_o experiment_n yet_o there_o be_v so_o many_o circumstance_n requisite_a to_o make_v the_o first_o part_n of_o it_o succeed_v very_o well_o for_o to_o make_v it_o succeed_v in_o some_o measure_n be_v not_o so_o difficult_a that_o the_o event_n have_v sometime_o deceive_v i_o in_o spite_n of_o the_o several_a trial_n i_o have_v make_v wherefore_o it_o will_v not_o be_v amiss_o to_o intimate_v first_o that_o one_o of_o the_o first_o time_n if_o not_o the_o first_o i_o make_v such_o a_o odd_a concretion_n be_v with_o the_o solution_n not_o make_v with_o spirit_n of_o vinegar_n but_o with_o spirit_n of_o verdigrease_n which_o i_o common_o distil_v without_o additament_n though_o afterward_o i_o be_v invite_v to_o prefer_v strong_a spirit_n of_o vinegar_n which_o be_v the_o liquor_n wherewith_o the_o recite_v experiment_n be_v exhibit_v second_o that_o it_o often_o happen_v that_o if_o the_o solution_n of_o coral_n which_o be_v not_o the_o only_a body_n wherewith_o i_o have_v make_v such_o trial_n with_o indifferent_a good_a success_n be_v not_o sufficient_o strong_a and_o impregnated_a with_o saline_n part_n or_o the_o spirit_n of_o wine_n be_v not_o sufficient_o rectify_v the_o shake_n of_o the_o two_o liquor_n will_v not_o change_v the_o consistence_n of_o the_o whole_a mixture_n but_o leave_v some_o part_n of_o it_o fluid_v or_o else_o the_o concretion_n will_v not_o begin_v present_o to_o be_v make_v but_o require_v to_o be_v wait_v for_o a_o while_n three_o that_o i_o once_o at_o least_o if_o not_o often_o observe_v that_o when_o by_o mingle_v the_o two_o liquor_n and_o shake_v they_o in_o a_o narrow_a mouth_a glass_n who_o orifice_n be_v stop_v they_o will_v not_o concoagulate_v as_o it_o be_v confident_o expect_v they_o shall_v yet_o by_o try_v the_o experiment_n in_o a_o wide_a mouth_n glass_n to_o which_o the_o air_n have_v free_a access_n it_o succeed_v to_o my_o content_n four_o that_o in_o the_o reduction_n of_o the_o concretion_n to_o a_o fluid_a body_n it_o be_v not_o proper_a to_o employ_v in_o stir_v it_o a_o knife_n or_o any_o other_o metalline_a body_n except_o it_o be_v of_o gold_n but_o rather_o some_o stick_n of_o glass_n or_o at_o least_o some_o clean_a stick_n of_o wood_n lest_o the_o menstruum_fw-la shall_v corrode_v it_o and_o