fluidity_n and_o firmness_n depend_v on_o texture_n and_o the_o motion_n or_o rest_n of_o the_o insensible_a part_n of_o matter_n the_o experiment_n be_v that_o have_v make_v a_o solution_n of_o coral_n in_o vinegar_n so_o strong_a that_o part_n of_o it_o fall_v to_o the_o bottom_n i_o pour_v dephlegm_v spirit_n of_o wine_n upon_o the_o clear_a decantated_a liquor_n so_o gentle_o that_o it_o may_v swim_v upon_o it_o for_o some_o time_n where_o it_o be_v suprize_v that_o upon_o a_o violent_a agitation_n the_o two_o liquor_n be_v mix_v together_o unite_v into_o a_o concrete_a so_o firm_a as_o not_o to_o afford_v the_o least_o drop_n of_o a_o fluid_a liquor_n yet_o by_o add_v a_o equal_a quantity_n or_o thereabouts_o of_o spirit_n of_o nitre_n it_o will_v again_o lay_v down_o that_o viscidity_n and_o become_v a_o transparent_a liquor_n and_o here_o it_o will_v not_o be_v amiss_o to_o specify_v that_o this_o experiment_n be_v so_o difficult_a that_o it_o scarce_o succeed_v without_o a_o great_a deal_n of_o caution_n for_o first_o if_o the_o tincture_n be_v not_o strong_a enough_o or_o the_o spirit_n of_o wine_n not_o rectify_v the_o coagulation_n will_v be_v but_o partial_a and_o not_o so_o quick_a second_o the_o experiment_n have_v succeed_v in_o a_o wide-mouthed_a glass_n where_o it_o have_v a_o free_a access_n of_o air_n though_o it_o will_v not_o in_o one_o which_o be_v close_o three_o upon_o a_o infusion_n of_o spirit_n of_o nitre_n the_o mixture_n must_v be_v stir_v with_o a_o instrument_n make_v of_o gold_n wood_n or_o glass_n lest_o the_o menstruum_fw-la corrode_a it_o shall_v render_v the_o experiment_n unsuccessful_a and_o four_o the_o quantity_n of_o each_o of_o these_o ingredient_n be_v hard_o to_o be_v define_v by_o reason_n of_o the_o difference_n in_o respect_n of_o the_o strength_n of_o the_o tincture_n and_o the_o spirituousness_n of_o the_o spirit_n but_o it_o be_v rather_o to_o be_v learn_v by_o vary_v the_o proportion_n if_o the_o first_o trial_n do_v not_o succeed_v have_v make_v this_o progress_n in_o the_o history_n of_o fluidity_n and_o firmness_n it_o may_v be_v seasonable_a to_o pass_v on_o and_o consider_v those_o other_o quality_n relate_v to_o it_o as_o hardness_n brittleness_n softness_n etc._n etc._n but_o remember_v the_o advice_n give_v by_o some_o of_o the_o ancient_n noscenda_fw-la est_fw-la mensura_fw-la svi_fw-la i_o shall_v leave_v they_o for_o other_o who_o be_v better_a able_a and_o more_o at_o leisure_n be_v content_a that_o i_o have_v explain_v the_o two_o former_a quality_n more_o intelligible_o than_o some_o of_o the_o peripatetic_n or_o chemist_n have_v lay_v open_a a_o way_n to_o accommodate_v chemical_a experiment_n to_o the_o explanation_n of_o fluidity_n and_o firmness_n so_o as_o to_o deduce_v those_o quality_n from_o more_o intelligible_a principle_n viz._n size_n shape_n and_o motion_n chap._n fourteen_o a_o essay_n of_o the_o intestine_a motion_n of_o the_o particle_n of_o quiescent_a solid_n limit_v the_o signification_n of_o the_o word_n rest_v limit_v the_o word_n rest_n be_v of_o so_o ambiguous_a a_o signification_n that_o before_o the_o question_n whether_o there_o be_v in_o body_n any_o absolute_a rest_n can_v be_v answer_v it_o be_v requisite_a to_o consider_v that_o in_o the_o common_a acceptation_n it_o be_v use_v to_o denote_v such_o a_o rest_n as_o be_v not_o perceivable_a to_o sense_n but_o when_o take_v in_o a_o more_o strict_a and_o philosophical_a sense_n it_o usual_o signify_v such_o a_o absolute_a rest_n as_o to_o intimate_v a_o total_a negation_n of_o motion_n in_o which_o latter_a sense_n if_o it_o be_v take_v i_o will_v not_o affirm_v that_o there_o be_v such_o a_o rest_n even_o in_o the_o part_n of_o solid_n since_o it_o be_v not_o improbable_a but_o that_o there_o be_v motion_n though_o imperceivable_a by_o sense_n even_o in_o the_o most_o solid_a body_n in_o favour_n of_o which_o opinion_n be_v it_o necessary_a i_o shall_v offer_v argument_n à _fw-la priori_fw-la deduce_v from_o the_o doctrine_n of_o the_o epicurean_a and_o cartesian_a principle_n for_o shall_v we_o allow_v the_o world_n to_o arise_v from_o a_o casual_a concourse_n of_o atom_n and_o that_o there_o be_v actual_a motion_n in_o all_o of_o they_o it_o will_v not_o be_v absurd_a to_o think_v that_o though_o in_o form_v concretes_n they_o be_v usual_o wound_v one_o within_o another_o yet_o there_o be_v a_o continual_a endeavour_n to_o elasticity_n by_o which_o they_o continual_o strive_v to_o disentangle_v themselves_o and_o to_o fly_v away_o and_o consequent_o the_o result_n of_o those_o endeavour_n must_v be_v a_o motion_n among_o those_o atom_n and_o on_o the_o other_o side_n shall_v we_o with_o cartesius_n allow_v a_o continual_a circulation_n of_o a_o materia_fw-la subtilis_fw-la through_o the_o pore_n of_o body_n we_o may_v imagine_v that_o the_o insensible_a atom_n which_o constitute_v that_o body_n will_v be_v shake_v and_o disturb_v by_o it_o though_o not_o so_o much_o as_o to_o be_v perceive_v by_o sense_n so_o in_o the_o summer_n the_o leave_n be_v carry_v off_o the_o tree_n with_o gentle_a gale_n of_o wind_n which_o be_v not_o perceive_v by_o those_o that_o stand_v some_o distance_n off_o but_o not_o to_o enlarge_v upon_o this_o point_n it_o may_v appear_v from_o several_a of_o the_o phaenomena_n mention_v above_o in_o the_o history_n of_o fluidity_n that_o the_o particle_n of_o body_n may_v be_v in_o motion_n though_o that_o motion_n be_v not_o discern_v and_o particular_o that_o of_o water_n where_o though_o its_o part_n be_v in_o a_o very_a various_a motion_n yet_o to_o sense_n they_o seem_v to_o be_v as_o much_o at_o rest_n as_o those_o which_o form_n the_o glass_n in_o which_o the_o water_n be_v contain_v and_o that_o there_o may_v be_v a_o like_a motion_n in_o the_o substance_n of_o silver_n or_o iron_n may_v be_v argue_v from_o what_o be_v evident_a to_o the_o touch_n or_o by_o throw_v water_n upon_o they_o when_o hot_a it_o be_v peculiar_a property_n in_o they_o when_o hot_a to_o burn_v the_o finger_n and_o to_o set_v the_o water_n boil_v and_o the_o like_a quality_n though_o not_o so_o violent_a may_v be_v raise_v without_o the_o help_n of_o fire_n by_o bare_o hammer_v of_o iron_n or_o silver_n they_o not_o only_o by_o that_o mean_n acquire_v a_o power_n to_o heat_n but_o likewise_o to_o raise_v water_n into_o vapour_n solid_n argument_n to_o prove_v motion_n in_o solid_n but_o if_o to_o this_o it_o shall_v be_v object_v that_o though_o the_o motion_n be_v indiscernible_a yet_o the_o agent_n that_o give_v it_o that_o motion_n be_v not_o since_o we_o can_v discern_v how_o those_o quality_n be_v add_v to_o it_o and_o how_o the_o alteration_n be_v wrought_v i_o answer_v that_o though_o a_o vigorous_a loadstone_n appear_v to_o be_v draw_v along_o its_o axis_n and_o back_o again_o the_o alteration_n be_v not_o visible_a in_o the_o body_n of_o the_o iron_n yet_o it_o certain_o lose_v after_o it_o have_v acquire_v those_o noble_a faculty_n viz._n it_o be_v attract_v and_o direct_v virtue_n proper_o belong_v to_o magnetical_a body_n but_o that_o there_o may_v be_v in_o metal_n a_o motion_n though_o not_o discernible_a be_v further_a evident_a in_o a_o bell_n which_o a_o long_a time_n after_o it_o have_v be_v strike_v with_o the_o clapper_n continue_v to_o put_v the_o air_n into_o a_o undulate_a motion_n and_o thereby_o to_o cause_v very_o odd_a sound_n which_o must_v be_v a_o argument_n that_o the_o partieles_n of_o that_o bell_n be_v in_o a_o very_a nimble_a agitation_n otherwise_o they_o can_v not_o communicate_v motion_n to_o the_o circumambient_a air_n and_o thereby_o cause_v such_o a_o noise_n in_o the_o ear._n but_o i_o must_v confess_v there_o be_v two_o difficulty_n answer_v objection_n answer_v which_o occur_v to_o what_o i_o have_v be_v offer_v as_o first_o that_o it_o be_v hard_o to_o imagine_v how_o the_o internal_a part_n of_o such_o solid_a body_n shall_v be_v work_v upon_o by_o agent_n so_o weak_a as_o the_o air_n and_o especial_o some_o part_n of_o matter_n more_o minute_n which_o be_v disperse_v through_o it_o and_o second_o it_o may_v be_v question_v how_o any_o part_n of_o matter_n can_v be_v move_v so_o slow_a if_o at_o all_o as_o to_o be_v so_o long_o in_o move_v from_o the_o internal_a part_n of_o a_o needle_n to_o the_o superficies_n as_o our_o hypothesis_n require_v but_o to_o the_o first_o i_o answer_v that_o those_o external_n part_n be_v not_o the_o sole_a cause_n of_o these_o motion_n but_o only_a assistant_n to_o the_o principal_a which_o be_v evident_a from_o what_o have_v late_o be_v note_v concern_v the_o connate_a disposition_n to_o motion_n attribute_v to_o matter_n according_a to_o the_o epicurean_a and_o cartesian_a philosophy_n and_o by_o the_o effect_n of_o a_o loadstone_n upon_o the_o needle_n we_o may_v be_v teach_v to_o guess_v what_o
colour_n but_o of_o a_o muddy_a red_a and_o some_o which_o appear_v to_o be_v a_o dirty_a liquor_n as_o long_o as_o it_o be_v keep_v in_o the_o vessel_n it_o be_v make_v in_o free_a from_o the_o air_n appear_v to_o be_v of_o the_o colour_n of_o a_o emerald_n when_o expose_v to_o it_o and_o what_o be_v remarkable_a in_o these_o experiment_n be_v that_o according_o as_o the_o quality_n of_o the_o matter_n and_o circumstance_n differ_v the_o green_a colour_n appear_v soon_o or_o less_o speedy_o but_o to_o conclude_v though_o the_o success_n of_o experiment_n of_o this_o kind_n be_v very_o doubtful_a yet_o since_o the_o attainment_n be_v so_o desirable_a it_o may_v encourage_v the_o curious_a not_o to_o pretermit_v the_o advantage_n which_o may_v succeed_v such_o endeavour_n for_o as_o mariner_n at_o sea_n who_o at_o a_o distance_n upon_o the_o horizon_n some_o time_n see_v something_o obscure_v which_o whether_o it_o be_v a_o cloud_n a_o mountain_n or_o a_o island_n they_o can_v distinguish_v yet_o it_o have_v prove_v worth_a their_o while_n to_o approach_v it_o and_o not_o lose_v the_o probability_n of_o a_o discovery_n so_o who_o know_v but_o by_o make_v a_o advance_v in_o less_o promise_a experiment_n we_o may_v discover_v something_o which_o may_v rich_o reward_v our_o pain_n chap._n xxiii_o experiment_n and_o note_n about_o the_o mechanical_a production_n of_o magnetical_a quality_n pronuce_v magnetical_a quality_n mechanical_o pronuce_v though_o the_o operation_n of_o a_o loadstone_n be_v just_o reckon_v among_o occult_a quality_n and_o think_v to_o flow_v from_o the_o substantial_a form_n of_o the_o magnet_n yet_o i_o see_v no_o reason_n why_o it_o may_v not_o be_v easy_o mechanical_o produce_v since_o a_o piece_n of_o steel_n fit_o shape_v and_o well_o excite_v like_o a_o loadstone_n point_v to_o determinate_a pole_n viz._n north_n and_o south_n draw_v other_o piece_n of_o steel_n to_o it_o and_o communicate_v to_o they_o in_o a_o faint_a degree_n the_o same_o attractive_a and_o directive_n virtue_n which_o be_v not_o slight_a and_o transient_a impression_n but_o durable_a and_o last_a where_o it_o be_v evident_a that_o though_o the_o steel_n be_v endue_v with_o magnetical_a virtue_n yet_o it_o have_v not_o the_o form_n of_o a_o loadstone_n but_o only_o the_o metal_n by_o the_o action_n of_o a_o loadstone_n acquire_v such_o a_o disposition_n in_o its_o part_n as_o inable_v it_o to_o perform_v magnetical_a operation_n which_o power_n it_o lose_v again_o by_o be_v heat_v red_a hot_a and_o cool_v in_o the_o air_n yet_o the_o form_n of_o the_o steel_n be_v still_o the_o same_o and_o from_o what_o i_o have_v in_o another_o place_n lay_v down_o it_o appear_v that_o a_o loadstone_n itself_o may_v lose_v its_o faculty_n of_o attract_v iron_n and_o yet_o retain_v all_o it_o be_v other_o quality_n nay_o though_o it_o be_v a_o peculiar_a quality_n of_o a_o loadstone_n to_o point_v north_n and_o south_n yet_o without_o destroy_v its_o substantial_a form_n by_o fire_n the_o pole_n may_v very_o easy_o and_o speedy_o be_v change_v if_o a_o small_a fragment_n of_o a_o loadstone_n have_v its_o pole_n successive_o apply_v to_o a_o very_a vigorous_a magnet_n but_o to_o make_v it_o further_o appear_v that_o magnetical_a quality_n may_v be_v mechanical_o produce_v or_o alter_v i_o shall_v add_v that_o i_o have_v observe_v that_o whilst_o the_o part_n of_o well_o temper_a steel_n have_v be_v excite_v to_o motion_n by_o rub_v they_o will_v draw_v to_o they_o file_n of_o steel_n or_o thin_a fragment_n of_o steel_n or_o iron_n but_o when_o the_o adventitious_a warmth_n acquire_v by_o that_o attrition_n cease_v they_o present_o lose_v their_o attractive_a power_n and_o i_o have_v elsewhere_o observe_v that_o the_o low_a end_n of_o a_o perpendicular_a bar_n of_o iron_n have_v be_v so_o far_o alter_v by_o the_o effluvia_fw-la of_o the_o terraqueous_a globe_n as_o to_o be_v turn_v into_o a_o kind_n of_o magnet_n who_o low_a end_n become_v the_o north_n pole_n of_o it_o and_o the_o other_o the_o south_n to_o which_o observation_n we_o may_v add_v that_o if_o the_o bar_n of_o iron_n stand_v but_o a_o while_n in_o a_o erect_a posture_n the_o magnetical_a quality_n of_o it_o will_v be_v so_o transient_a that_o if_o the_o upper_a end_n which_o attract_v the_o north_n end_n of_o a_o needle_n be_v invert_v and_o hold_v downward_o it_o will_v drive_v it_o away_o and_o on_o the_o contrary_a if_o it_o remain_v a_o long_a time_n in_o that_o posture_n the_o change_n wrought_v upon_o it_o be_v so_o great_a that_o a_o piece_n of_o a_o bar_n of_o iron_n which_o be_v upon_o the_o top_n of_o a_o church_n call_v arimini_fw-la in_o italy_n by_o the_o rustyness_n of_o it_o and_o the_o magnetical_a virtue_n it_o have_v acquire_v seem_v to_o be_v turn_v into_o a_o loadstone_n and_o further_o it_o may_v be_v observe_v that_o if_o a_o piece_n of_o iron_n have_v its_o pore_n open_v and_o loosened_a it_o imbibe_v the_o magnetical_a effluvia_fw-la of_o the_o earth_n so_o fast_o as_o to_o acquire_v magnetical_a virtue_n much_o soon_o and_o here_o it_o may_v not_o be_v useless_a to_o observe_v what_o different_a effect_n fire_n have_v upon_o two_o different_a body_n for_o by_o keep_v a_o loadstone_n red_a hot_a it_o lose_v its_o attractive_a power_n though_o afterward_o it_o be_v cool_v in_o a_o perpendicular_a posture_n whereas_o iron_n by_o be_v heat_v and_o cool_v in_o a_o perpendicular_a posture_n acquire_v a_o manifest_a virticity_n so_o that_o the_o internal_a texture_n and_o constitution_n of_o the_o loadstone_n seem_v to_o be_v destroy_v and_o weaken_a by_o ignition_n from_o whence_o likewise_o it_o appear_v that_o magnetical_a quality_n may_v be_v alter_v by_o and_o depend_v on_o mechanical_a principle_n and_o to_o these_o observation_n i_o shall_v add_v further_o that_o have_v bring_v a_o piece_n of_o ochre_n to_o a_o convenient_a shape_n and_o after_o i_o have_v heat_v it_o red_a hot_a suffer_v it_o to_o cool_v in_o a_o convenient_a posture_n it_o be_v able_a to_o exercise_v magnetical_a operation_n on_o a_o poise_v needle_n and_o indeed_o a_o convenient_a posture_n so_o much_o contribute_v to_o the_o preservation_n of_o magnetical_a quality_n that_o leave_v a_o very_a vigorous_a loadstone_n for_o sometime_o in_o a_o inconvenient_a posture_n it_o lose_v considerable_o of_o its_o magnetical_a virtue_n and_o this_o corruption_n of_o magnetical_a quality_n be_v further_a evident_a in_o a_o excite_a needle_n which_o as_o it_o be_v various_o touch_v with_o this_o or_o that_o end_n of_o a_o loadstone_n point_v with_o this_o or_o that_o end_n northward_o or_o towards_o the_o south_n to_o make_v it_o yet_o more_o probable_a that_o magnetical_a virtue_n may_v be_v mechanical_o produce_v and_o destroy_v i_o shall_v subjoin_v that_o by_o a_o experiment_n try_v by_o the_o ingenious_a dr_n power_n it_o appear_v that_o a_o bar_n of_o iron_n ignite_v and_o suffer_v to_o cool_a north_n and_o south_n and_o hammer_v at_o both_o end_n will_v lose_v its_o magnetical_a virtue_n by_o two_o or_o three_o smart_a blow_n upon_o the_o middle_n of_o the_o bar_n with_o a_o hammer_n chap._n xxiv_o chymico-magnetical_a experiment_n and_o observation_n observation_n magnetical_a experiment_n and_o observation_n the_o loadstone_n be_v a_o body_n who_o nature_n be_v so_o little_o know_v and_o who_o quality_n be_v so_o admirable_a i_o shall_v in_o order_n to_o the_o better_a understanding_n of_o it_o lay_v down_o some_o experiment_n make_v upon_o several_a bring_v from_o different_a country_n and_o of_o different_a size_n shape_v and_o colour_n but_o before_o i_o proceed_v to_o they_o it_o be_v requisite_a to_o advertise_v that_o although_o the_o title_n of_o this_o chapter_n be_v chymico-magnetical_a yet_o all_o the_o experiment_n contain_v in_o it_o be_v not_o chemical_a several_a other_o be_v mix_v with_o they_o also_o it_o be_v requisite_a to_o note_v that_o iron_n and_o steel_n be_v usual_o reckon_v among_o magnetical_a body_n i_o have_v also_o add_v a_o few_o experiment_n make_v upon_o they_o experiment_n i._n several_a stone_n be_v heat_v in_o the_o fire_n have_v by_o the_o action_n of_o it_o their_o texture_n visible_o alter_v some_o be_v brittle_a other_o fly_v asunder_o of_o their_o own_o accord_n whilst_o other_o continue_v whole_a in_o which_o it_o be_v observable_a when_o break_v that_o some_o be_v not_o unlike_a iron_n over_o whereas_o other_o be_v shatter_v into_o flake_n or_o plate_n of_o various_a colour_n but_o some_o which_o be_v english_a reserve_v their_o solidity_n and_o colour_n experiment_n ii_o several_a small_a loadstone_n be_v burn_v we_o can_v not_o perceive_v the_o least_o of_o that_o sulphureous_a blue_a flame_n which_o porta_n lib._n 7._o cap._n 7._o of_o his_o nat._n magic_a take_v notice_n of_o experiment_n iii_o &_o iv_o it_o be_v worth_a observe_n that_o several_a loadstone_n be_v strike_v
and_o melt_v sulphur_n be_v harden_v in_o the_o same_o mould_v the_o concrete_v mass_n seem_v when_o break_v to_o consist_v of_o flake_n like_o straw_n lie_a parallel_n to_o each_o other_o but_o how_o the_o flake_n of_o tin-glass_n come_v to_o be_v so_o regular_o situate_v and_o whether_o the_o outside_n be_v first_o condense_v the_o contiguous_a liquor_n be_v connect_v by_o apposition_n successive_o as_o it_o move_v within_o the_o crust_v surface_n or_o whether_o it_o be_v otherwise_o effect_v i_o shall_v not_o now_o stay_v to_o examine_v but_o to_o what_o i_o have_v say_v i_o shall_v add_v that_o have_v break_v several_a marchasite_n of_o a_o peculiar_a sort_n i_o find_v they_o to_o consist_v of_o several_a row_n of_o planes_n reach_v from_o the_o inermost_a part_n to_o the_o external_n surface_n and_o in_o those_o which_o be_v somewhat_o cylindrical_o shape_v on_o the_o outside_n these_o rank_n of_o gold_n colour_a particle_n in_o the_o several_a plane_n of_o the_o break_a mineral_n 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which_o be_v dry_v in_o the_o air_n form_v body_n like_o moss_n and_o here_o and_o there_o small_a mushroom_n pretty_o colour_v and_o from_o other_o granate_n i_o obtain_v a_o tincture_n which_o after_o evaporation_n do_v in_o the_o cold_a afford_v saline_a concretion_n but_o so_o small_a that_o their_o figure_n can_v not_o be_v determine_v and_o probable_o be_v trial_n make_v other_o mineral_n concretes_n may_v be_v wrought_v on_o by_o appropriate_v menstruum_n for_o though_o the_o spar_v that_o be_v find_v in_o lead_n mine_n next_o the_o vein_n of_o ore_n be_v semidiaphanous_a and_o usual_o break_v in_o smooth_a and_o glassy_a superficies_n and_o look_n like_o a_o talc_n and_o also_o for_o the_o most_o part_n be_v make_v up_o of_o figure_a particle_n shape_v like_o rhombuus_n or_o rhomboide_n yet_o i_o find_v it_o be_v a_o more_o open_a body_n than_o talk_v be_v dissolve_v in_o spirit_n of_o salt_n without_o the_o assistance_n of_o heat_n but_o i_o be_o apt_a to_o believe_v that_o 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with_o which_o they_o counterfeit_v diamond_n have_v be_v cause_v in_o a_o trice_n to_o emit_v copious_a and_o strong_o scent_v steam_n and_o even_o diamond_n the_o hard_a of_o gem_n may_v by_o rub_v be_v cause_v to_o emit_v electrical_a effluvia_fw-la and_o though_o it_o be_v think_v by_o some_o that_o the_o digestion_n of_o a_o man_n stomach_n be_v not_o able_a to_o extract_v the_o metalline_a part_n yet_o there_o may_v be_v a_o great_a congruity_n betwixt_o the_o juice_n of_o our_o body_n and_o the_o mineral_n substance_n with_o which_o they_o be_v impregnate_v than_o we_o be_v aware_a of_o beside_o we_o see_v that_o the_o stomach_n have_v manifest_a effect_n on_o chalybeate_a preparation_n and_o even_o crude_a steel_n itself_o and_o i_o have_v obtain_v a_o tincture_n from_o several_a hard_a body_n and_o even_a gem_n themselves_o by_o a_o liquor_n distil_v from_o a_o vegetable_a substance_n as_o temperate_o qualify_v as_o bread_n and_o that_o the_o natural_a heat_n of_o our_o body_n 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saline_a nature_n
vibration_n of_o the_o string_n etc._n etc._n different_a sound_n be_v produce_v which_o as_o they_o be_v more_o or_o less_o coincident_a cause_n either_o concord_n or_o discord_n in_o sound_n but_o it_o will_v be_v too_o tedious_a to_o mention_v all_o the_o diversity_n which_o may_v happen_v in_o quality_n by_o the_o various_a combination_n of_o our_o ten_o principle_n and_o therefore_o since_o from_o hence_o their_o fertility_n may_v sufficient_o appear_v i_o shall_v proceed_v to_o answer_v a_o three_o objection_n answer_v the_o last_o difficulty_n raise_v against_o the_o corpuscular_a philosophy_n which_o be_v that_o if_o the_o quality_n of_o body_n depend_v on_o the_o size_n shape_n and_o texture_n of_o body_n all_o body_n of_o the_o same_o colour_n must_v have_v the_o same_o texture_n and_o if_o the_o same_o texture_n the_o same_o quality_n in_o other_o respect_n but_o we_o see_v it_o be_v contrary_a since_o the_o calx_fw-la of_o hartshorn_n be_v insipid_a and_o yet_o the_o 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expose_v to_o a_o convenient_a heat_n acquire_v several_a quality_n not_o different_a from_o those_o of_o fluid_a body_n so_o aqua_fw-la fortis_fw-la although_o it_o be_v transparent_a and_o clear_a yet_o if_o raise_v in_o the_o form_n of_o fume_n it_o put_v on_o a_o red_a colour_n the_o three_o thing_n i_o will_v propose_v to_o remove_v this_o difficulty_n be_v what_o have_v be_v several_a time_n hint_v before_o viz._n that_o a_o body_n be_v not_o to_o be_v consider_v bare_o as_o a_o determinate_a substance_n but_o as_o a_o part_n of_o the_o universe_n and_o place_v among_o other_o body_n but_o four_o as_o to_o that_o part_n of_o the_o objection_n which_o question_n the_o corpuscular_a principle_n in_o make_v it_o appear_v why_o a_o body_n so_o qualify_v as_o to_o cause_n whiteness_n shall_v have_v other_o quality_n which_o be_v of_o no_o affinity_n with_o it_o what_o have_v be_v already_o deliver_v may_v be_v sufficient_a to_o remove_v it_o viz._n that_o the_o extra-essential_a part_n may_v be_v so_o qualify_v though_o the_o essential_a part_n be_v not_o alter_v which_o we_o have_v more_o reason_n to_o believe_v since_o most_o sensible_a quality_n be_v only_o relative_a attribute_n and_o may_v result_v from_o a_o accidental_a motion_n or_o more_o than_o ordinary_a laxity_n or_o density_n of_o part_n or_o some_o other_o such_o like_a affection_n turpentine_n several_a quality_n exhibit_v by_o venice_n turpentine_n to_o illustrate_v which_o if_o a_o three_o part_n of_o venice_n turpentine_n be_v evaporate_v we_o may_v obtain_v from_o it_o a_o colophony_n of_o a_o reddish_n colour_n which_o be_v beat_v small_a will_v lose_v its_o transparency_n and_o be_v turn_v into_o a_o white_a opacous_a powder_n which_o with_o a_o moderate_a heat_n will_v again_o be_v restore_v to_o its_o former_a transparency_n fludity_n and_o colour_n into_o which_o fluid_a body_n if_o one_o immerge_n the_o end_n of_o a_o quill_n something_o below_o the_o surface_n and_o blow_v artificial_o it_o will_v rise_v in_o bubble_n curious_o adorn_v with_o vivid_n and_o lively_a colour_n and_o if_o in_o that_o state_n you_o take_v it_o into_o your_o hand_n it_o be_v viscid_a enough_o to_o draw_v into_o string_n and_o if_o put_v into_o a_o triangular_a figure_n will_v like_o a_o triangular_a glass_n yield_v a_o variety_n of_o colour_n when_o cold_a it_o be_v very_o brittle_a and_o if_o moderate_o rub_v it_o be_v endow_v with_o a_o electrical_a virtue_n of_o attract_v straw_n the_o same_o phaenomena_n will_v appear_v upon_o manage_v purify_v rosin_n after_o the_o same_o manner_n urine_n another_o experiment_n of_o the_o like_a nature_n try_v upon_o putrify_a urine_n to_o this_o i_o shall_v subjoin_v another_o instance_n to_o show_v that_o a_o homogeneous_a body_n may_v by_o shape_n or_o other_o mechanical_a affection_n have_v different_a quality_n in_o respect_n of_o our_o sense_n and_o the_o attribute_n assign_v to_o it_o upon_o that_o score_n the_o instance_n be_v in_o putrify_a urine_n distil_v the_o spirit_n of_o which_o when_o it_o have_v by_o frequent_a distillation_n be_v dephlegm_v have_v a_o pungent_a taste_n and_o swim_v in_o a_o phlegmatic_a vehicle_n be_v also_o of_o a_o very_a offensive_a smell_n who_o salt_n when_o free_v from_o the_o water_n be_v of_o a_o white_a colour_n and_o be_v sharp_a and_o caustick_a if_o apply_v to_o a_o excoriate_v part_n beside_o which_o quality_n they_o likewise_o make_v the_o eye_n water_n and_o cause_n sneeze_v and_o in_o respect_n of_o physic_n their_o quality_n be_v no_o less_o note_v be_v diuretic_n diaphoretic_n and_o specific_a in_o hysterick_n fit_v when_o mix_v with_o file_n of_o brass_n they_o turn_v they_o into_o a_o green_a colour_n yet_o if_o mix_v with_o blue_a juice_n of_o plant_n they_o change_v that_o colour_n for_o a_o green_a one_o they_o dissolve_v copper_n yet_o destroy_v the_o corrosive_a virtue_n of_o other_o acid_n menstruum_n and_o precipitate_v the_o copper_n when_o dissolve_v by_o they_o yet_o if_o common_a salt_n be_v associate_v with_o
part_n yet_o when_o it_o cease_v to_o be_v water_v with_o a_o continual_a supply_n of_o sap_n the_o sap_n be_v only_o disperse_v in_o the_o air_n or_o intercept_v and_o spend_v in_o some_o other_o part_n of_o the_o tree_n from_o whence_o it_o appear_v that_o nothing_o at_o all_o perish_v but_o only_o the_o manner_n of_o union_n and_o the_o particular_a modification_n of_o those_o part_n of_o matter_n cease_v so_o that_o those_o solid_a part_n be_v no_o long_o fit_o adapt_v to_o be_v nourish_v by_o those_o fluid_n which_o instance_n may_v serve_v to_o illustrate_v our_o doctrine_n though_o there_o be_v considerable_a difference_n betwixt_o the_o thing_n compare_v inasmuch_o as_o a_o plant_n have_v not_o always_o that_o aptitude_n to_o be_v again_o actuate_v as_o the_o mill_n have_v but_o there_o be_v some_o instance_n which_o may_v render_v the_o difference_n less_o considerable_a if_o we_o consider_v that_o the_o rose_n of_o jericho_n which_o though_o for_o several_a year_n gather_v and_o wither_v be_v so_o far_o refresh_v by_o water_n as_o to_o seem_v but_o late_o gather_v and_o i_o have_v observe_v that_o though_o a_o plant_n of_o aloe_n have_v several_a year_n hang_v near_o the_o ceiling_n of_o my_o chamber_n yet_o it_o be_v by_o the_o use_n of_o a_o convenient_a liquor_n so_o far_o renew_v as_o to_o perform_v several_a thing_n which_o be_v usual_o the_o effect_n of_o life_n and_o growth_n and_o the_o like_a be_v confirm_v by_o what_o may_v be_v experiment_a in_o wasp_n which_o though_o drown_v in_o water_n will_v yet_o recover_v life_n by_o the_o heat_n of_o the_o sun_n ingredient_n the_o quality_n of_o a_o body_n who_o specific_a form_n be_v destroy_v depend_v not_o on_o the_o unite_a action_n of_o the_o whole_a ingredient_n but_o to_o wave_v needless_a illustration_n i_o shall_v proceed_v to_o observe_v that_o though_o a_o body_n have_v lay_v down_o its_o specific_a form_n yet_o the_o quality_n remain_v be_v not_o always_o the_o result_n of_o the_o unite_a 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but_o several_a outward_a agent_n to_o which_o those_o body_n be_v expose_v do_v by_o agitate_v and_o alter_v the_o texture_n of_o that_o matter_n promote_v such_o a_o favourble_n concourse_n of_o circumstance_n that_o noble_a and_o very_a exquisite_a form_n may_v result_v from_o their_o union_n and_o contexture_n as_o a_o limestone_n be_v physical_o change_v by_o the_o influence_n of_o congruous_a particle_n when_o expose_v to_o the_o air_n will_v yield_v salt-petre_n genuine_a and_o inflammable_a and_o i_o have_v often_o observe_v a_o efflorescence_n upon_o certain_a marcasite_n agreeable_a in_o both_o colour_n and_o taste_n as_o well_o as_o other_o operation_n with_o vitriol_n which_o can_v be_v nothing_o but_o the_o effect_n of_o outward_a agent_n change_v the_o texture_n of_o those_o part_n which_o lie_v open_a to_o the_o air_n for_o some_o time_n part_n the_o modidification_n of_o a_o body_n may_v be_v twofold_a first_o in_o respect_n of_o this_o specific_a form_n second_o in_o respect_n of_o its_o own_o part_n but_o to_o wave_v there_o thing_n i_o shall_v illustrate_v a_o little_a further_o what_o i_o just_a before_o hint_v concern_v a_o twofold_a modification_n of_o matter_n viz._n the_o relation_n it_o have_v to_o a_o specific_a form_n and_o that_o which_o be_v the_o mere_a result_n of_o texture_n among_o its_o own_o part_n what_o i_o shall_v offer_v be_v that_o some_o thing_n be_v attribute_v to_o the_o soul_n or_o specific_a form_n which_o may_v be_v effect_v by_o the_o mere_a subordinate_a association_n of_o part_n promote_v by_o a_o mutual_a concourse_n of_o natural_a agent_n as_o the_o excrement_n may_v be_v void_v when_o a_o man_n be_v dead_a or_o fruit_n may_v be_v ripen_v after_o it_o be_v gather_v without_o the_o assistance_n of_o the_o expulsive_a faculty_n of_o the_o soul_n in_o the_o former_a or_o the_o perfective_a in_o the_o latter_a agreeable_a to_o this_o the_o inquisitive_a oviedo_n relate_v a_o story_n to_o the_o emperor_n charles_n the_o five_o of_o a_o fruit_n in_o the_o west-indies_n call_v anana_n which_o be_v gather_v as_o soon_o as_o one_o be_v ripe_a the_o rest_n be_v keep_v in_o chamber_n to_o acquire_v maturity_n afterward_o and_o the_o learned_a josephus_n acosta_n relate_v the_o follow_a account_n of_o the_o fruit_n of_o a_o planetree_n to_o the_o same_o viz._n that_o they_o usual_o gather_v it_o when_o green_a which_o be_v lay_v up_o in_o a_o vessel_n mix_v with_o a_o certain_a herb_n gradual_o ripen_v but_o the_o diligent_a piso_n tell_v a_o story_n more_o to_o our_o purpose_n of_o those_o brasilian_n plant_n call_v pacoeira_n and_o bananiera_n for_o concern_v the_o fruit_n he_o say_v continentur_fw-la plerumque_fw-la in_o vno_fw-la ramo_n quatuordecem_fw-la aut_fw-la sedecem_fw-la numero_fw-la ut_fw-la it_o a_o una_fw-la planta_n proferat_fw-la septuaginta_fw-la aut_fw-la octuaginta_fw-la qui_fw-la subinde_fw-la virides_fw-la avulsi_fw-la nunc_fw-la in_o aedibus_fw-la nunc_fw-la in_o navibus_fw-la suspenduntur_fw-la donec_fw-la justam_fw-la maturitatem_fw-la &_o flavedinem_fw-la consequantur_fw-la and_o he_o also_o say_v of_o the_o bough_n when_o lope_v off_o ramus_fw-la autem_fw-la ille_fw-la fructibus_fw-la onustus_fw-la interea_fw-la dum_fw-la illi_fw-la maturescunt_fw-la augetur_fw-la floresque_fw-la semper_fw-la protrudit_fw-la ex_fw-la corpore_fw-la illo_fw-la foliâ—ceo_fw-la etc._n etc._n and_o it_o be_v not_o less_o remarkable_a that_o onion_n and_o such_o like_a fruit_n as_o well_o as_o potato_n will_v shoot_v of_o their_o own_o accord_n though_o suspend_v in_o the_o air._n but_o not_o here_o to_o take_v notice_n how_o far_o these_o thing_n may_v result_v from_o the_o exertion_n of_o latent_fw-la and_o seminal_a principle_n i_o shall_v rather_o observe_v that_o several_a thing_n usual_o ascribe_v to_o the_o soul_n may_v result_v even_o from_o the_o texture_n of_o the_o body_n concur_v with_o external_a cause_n as_o the_o hair_n or_o nail_n will_v grow_v considerable_o for_o a_o long_a time_n after_o the_o body_n be_v dead_a live_v dead_a a_o cessation_n of_o vital_a function_n upon_o death_n no_o argument_n of_o the_o soul_n superintendency_n whilst_o live_v and_o though_o by_o the_o espouser_n of_o sennertus_n his_o opinion_n the_o cessation_n of_o the_o vital_a and_o animal_n function_n upon_o death_n be_v look_v upon_o as_o strong_a argument_n that_o the_o soul_n be_v the_o agent_n which_o effect_n whatever_n be_v act_v in_o the_o body_n yet_o i_o conceive_v it_o depend_v on_o something_n very_o precarious_a since_o notwithstanding_o what_o be_v manifest_a to_o we_o the_o cessation_n of_o those_o faculty_n may_v depend_v on_o the_o internal_a organization_n which_o may_v in_o some_o measure_n be_v destroy_v since_o the_o body_n consist_v of_o part_n not_o only_o solid_a but_o soft_a as_o the_o brain_n and_o also_o liquid_a as_o the_o humour_n a_o right_a and_o convenient_a coaptation_n of_o which_o be_v require_v to_o preserve_v life_n considerable_a change_n in_o the_o humour_n be_v enough_o to_o obstruct_v circulation_n on_o which_o life_n so_o much_o depend_v thus_o in_o palsy_n though_o there_o be_v no_o visible_a change_n yet_o by_o a_o indisposition_n either_o in_o the_o humour_n or_o vessel_n the_o part_n become_v void_a of_o sense_n as_o well_o as_o motion_n and_o even_o sleep_v itself_o so_o alter_v the_o disposition_n of_o our_o body_n that_o odour_n and_o sound_n be_v not_o perceive_v by_o a_o sleep_a man_n though_o nothing_o external_o obstruct_v the_o operation_n of_o the_o soul_n which_o lodge_v in_o the_o body_n and_o what_o considerable_a alteration_n in_o the_o humour_n may_v be_v effect_v without_o our_o perception_n may_v be_v urge_v from_o the_o effect_n which_o thunder_n have_v upon_o wine_n in_o turn_v it_o into_o a_o vinegar_n sour_a and_o uninflamable_a body_n the_o former_a doctrine_n of_o subordinate_a form_n apply_v to_o inanimate_a body_n but_o to_o render_v what_o i_o have_v say_v of_o subordinate_a form_n more_o intelligible_a i_o shall_v lay_v it_o down_o in_o certain_a proposition_n
equal_a proportion_n of_o wax_n and_o turpentine_n in_o winter_n and_o three_o part_n of_o wax_n to_o two_o of_o turpentine_n in_o summer_n for_o the_o ingress_n of_o air_n be_v thus_o prevent_v upon_o draw_v down_o the_o sucker_n the_o air_n by_o virtue_n of_o its_o own_o spring_n will_v force_v itself_o out_o of_o the_o receiver_n chap._n xxx_o a_o continuation_n of_o new_a experiment_n concern_v the_o spring_n and_o weight_n of_o the_o air_n and_o their_o effect_n by_o way_n of_o letter_n to_o the_o right_n honourable_a the_o lord_n clifford_n and_o dungarvan_n my_o dear_a lord_n have_v already_o give_v your_o lordship_n a_o account_n of_o the_o design_n and_o scope_n of_o our_o mechanical_a experiment_n without_o any_o further_a preface_n be_v encourage_v by_o your_o acceptance_n of_o my_o last_o i_o shall_v proceed_v to_o a_o continuation_n experiment_n i._o concern_v the_o raise_v of_o mercury_n a_o great_a height_n in_o a_o open_a tube_n by_o the_o spring_n of_o a_o small_a quantity_n of_o include_v air._n in_o order_n to_o make_v a_o estimate_n of_o the_o force_n of_o the_o air_n be_v spring_n in_o its_o several_a degree_n of_o expansion_n we_o fill_v the_o four_o part_n of_o a_o viol_n with_o quicksilver_n the_o neck_n of_o which_o be_v none_o of_o the_o large_a in_o which_o we_o fix_v a_o glass_n tube_n with_o hard_a wax_n the_o low_a end_n reach_v almost_o to_o the_o bottom_n of_o the_o quicksilver_n and_o the_o upper_a almost_o a_o yard_n above_o the_o viol_n which_o be_v convey_v into_o a_o receiver_n see_v plate_n 5._o fif_n 1._o which_o be_v pretty_a tall_a 1._o see_v plate_n 5._o fig._n 1._o upon_o a_o exsuction_n of_o the_o air_n in_o the_o receiver_n that_o in_o the_o viol_n expand_v itself_o raise_v the_o mercury_n 27_o inch_n in_o the_o tube_n yet_o when_o the_o air_n be_v again_o admit_v into_o the_o receiver_n it_o subside_v so_o far_o as_o to_o be_v almost_o if_o not_o quite_o equal_a with_o the_o surface_n of_o the_o mercury_n in_o the_o viol_n and_o this_o experiment_n be_v try_v before_o the_o famous_a savilian_a geometer_n dr._n wallis_n though_o it_o do_v not_o constant_o succeed_v alike_o it_o sometime_o rise_v high_o than_o at_o other_o in_o which_o experiment_n the_o follow_a observation_n be_v to_o be_v make_v first_o that_o so_o much_o air_n be_v blow_v into_o the_o viol_n to_o try_v whether_o it_o be_v staunch_v as_o be_v able_a to_o raise_v the_o mercury_n three_o inch_n in_o the_o pipe_n upon_o the_o exsuction_n of_o the_o external_n air_n in_o the_o receiver_n the_o mercury_n rise_v 30_o inch_n above_o that_o in_o the_o viol._n second_o when_o the_o mercury_n be_v take_v out_o of_o the_o receiver_n it_o do_v not_o sudden_o subside_o as_o low_o as_o before_o its_o ascent_n the_o air_n be_v a_o little_a more_o expand_v by_o the_o heat_n of_o the_o cement_n when_o melt_v with_o a_o iron_n three_o whilst_o the_o air_n include_v in_o the_o viol_n retain_v any_o considerable_a springiness_n after_o each_o exsuction_n the_o mercury_n will_v be_v raise_v by_o the_o force_n of_o its_o expansion_n a_o considerable_a height_n above_o what_o that_o air_n be_v able_a to_o suspend_v it_o at_o and_o make_v several_a vibration_n before_o it_o settle_v four_o upon_o the_o first_o exsuction_n the_o mercury_n rise_v near_a â…”_n of_o the_o whole_a weight_n that_o the_o expansion_n of_o the_o include_v air_n be_v able_a to_o raise_v it_o and_o continue_v every_o subsequent_a exsuction_n to_o rise_v less_o and_o less_o as_o the_o weight_n of_o the_o suspend_v mercury_n increase_v and_o the_o spring_n of_o the_o internal_a air_n grow_v weak_a and_o as_o the_o mercury_n rise_v less_o every_o exsuction_n than_o it_o do_v before_o so_o be_v the_o vibration_n less_o considerable_a last_o have_v observe_v the_o weight_n of_o the_o air_n in_o a_o good_a barometer_n when_o it_o be_v but_o light_n the_o mercury_n be_v raise_v to_o 29_o and_o â…œ_n though_o soon_o after_o the_o trial_n it_o be_v but_o 29_o inch_n high_a to_o make_v a_o estimate_n of_o the_o quantity_n of_o air_n which_o raise_v the_o mercury_n to_o the_o usual_a height_n we_o counterpoise_v the_o viol_n and_o then_o fill_v it_o full_a of_o water_n we_o find_v it_o to_o weigh_v about_o 5_o ounce_n 2_o drachm_n and_o about_o 20_o grain_n but_o so_o much_o be_v pour_v off_o that_o the_o remain_a water_n only_o fill_v the_o space_n which_o the_o mercury_n be_v before_o contain_v in_o it_o weigh_v 1_o ounce_n 2_o drachm_n 14_o grain_n so_o that_o the_o air_n which_o by_o its_o expansion_n elevate_v the_o mercury_n fill_v the_o space_n of_o no_o more_o than_o 4_o ounce_n and_o a_o few_o grain_n the_o diameter_n of_o the_o pipe_n employ_v in_o this_o experiment_n be_v no_o more_o than_o the_o â…›_n of_o a_o inch._n vacui_fw-la a_o argument_n against_o a_o fuga_fw-la vacui_fw-la but_o beside_o the_o spring_n of_o the_o air_n from_o this_o experiment_n we_o may_v learn_v what_o be_v to_o be_v think_v of_o what_o some_o learned_a man_n teach_v concern_v the_o suspension_n of_o quicksilver_n by_o a_o funiculus_fw-la and_o it_o be_v rise_v to_o avoid_v a_o vacuum_n for_o be_v the_o first_o true_a it_o may_v be_v demand_v why_o that_o funiculus_fw-la raise_v it_o not_o above_o 27_o inch_n and_o as_o for_o the_o latter_a it_o be_v object_v that_o the_o mercury_n be_v unable_a adequate_o to_o fill_v up_o more_o space_n by_o rise_v than_o if_o it_o rise_v not_o the_o reason_n must_v be_v invalid_a experiment_n ii_o a_o good_a quantity_n of_o air_n raise_v the_o mercury_n in_o a_o open_a tube_n no_o high_a than_o the_o weight_n of_o the_o atmosphere_n do_v in_o a_o baroscope_n have_v put_v a_o sufficient_a quantity_n of_o mercury_n into_o a_o large_a bottle_n capable_a of_o contain_v about_o ssij_fw-la we_o immerse_v the_o one_o end_v of_o a_o long_a slender_a tube_n below_o the_o surface_n of_o the_o mercury_n and_o have_v close_v the_o neck_n of_o the_o viol_n with_o cement_n it_o be_v convey_v into_o a_o receiver_n different_a from_o the_o former_a in_o nothing_o but_o size_n where_o we_o observe_v that_o the_o quantity_n of_o air_n be_v great_a in_o this_o viol_n than_o that_o make_v use_v of_o in_o the_o former_a experiment_n it_o be_v capable_a of_o expand_v further_o and_o of_o raise_v the_o mercury_n to_o about_o 29_o inch_n and_o about_o â…ž_n out_o of_o which_o half_a a_o inch_n be_v deduct_v for_o the_o height_n it_o be_v elevate_v to_o by_o air_n inject_v to_o try_v the_o stanchness_n of_o the_o bottle_n the_o spring_n of_o the_o air_n include_v in_o the_o bottle_n raise_v it_o to_o 29_o inch_n and_o about_o â…œ_n the_o weight_n of_o the_o air_n in_o a_o baroscope_n at_o the_o same_o time_n elevate_a the_o mercury_n 29_o inch_n and_o ½_n which_o be_v â…›_n high_a than_o the_o elevate_a mercury_n in_o the_o receiver_n but_o have_v continue_v to_o ply_v the_o pump_n still_o long_o we_o learn_v that_o the_o spring_n of_o the_o include_v air_n be_v incapable_a of_o raise_v it_o high_o than_o the_o weight_n of_o the_o atmosphere_n do_v in_o the_o baroscope_n this_o experiment_n be_v several_a time_n repeat_v with_o the_o like_a success_n but_o once_o the_o pump_n be_v ply_v more_o than_o usual_o the_o air_n contain_v in_o a_o green_a glass_n expanded_a so_o violent_o that_o though_o it_o can_v not_o raise_v the_o mercury_n high_a it_o break_v the_o glass_n with_o such_o violence_n that_o the_o piece_n which_o fly_v off_o crack_v the_o receiver_n experiment_n iii_o the_o spring_n of_o the_o include_v air_n will_v elevate_v mercury_n almost_o to_o a_o equal_a height_n in_o tube_n of_o a_o different_a boar_n in_o order_n to_o try_v whether_o the_o same_o quantity_n of_o air_n will_v by_o its_o expansion_n raise_v the_o mercury_n to_o the_o same_o height_n in_o a_o narrow_a as_o in_o a_o cylinder_n of_o a_o large_a diameter_n we_o repeat_v the_o former_a trial_n with_o a_o pipe_n of_o the_o same_o diameter_n but_o much_o long_o in_o which_o the_o spring_n of_o the_o air_n raise_v the_o mercury_n to_o 28_o inch_n and_o â…›_n the_o mercury_n in_o the_o borometer_n be_v 29_o inch_n and_o ¼_n high_a at_o the_o same_o time_n so_o that_o the_o air_n be_v able_a by_o its_o spring_n to_o raise_v the_o quicksilver_n within_o a_o inch_n as_o high_a in_o a_o large_a tube_n as_o in_o a_o small_a and_o when_o the_o spring_n of_o that_o air_n be_v no_o further_a able_a to_o expand_v itself_o the_o part_n of_o it_o be_v put_v into_o motion_n by_o heat_n the_o spring_n of_o it_o be_v so_o much_o increase_v as_o to_o raise_v the_o mercury_n â…_n of_o a_o inch_n high_o experiment_n iu._n a_o new_a hydraulo-pneumatical_a fountain_n make_v by_o the_o spring_n of_o uncompressed_a air._n have_v put_v a_o quantity_n of_o water_n
pillar_n to_o which_o the_o feather_n be_v fasten_v be_v join_v to_o the_o upper_a basis_n of_o the_o bellows_o with_o cement_n we_o fix_v a_o weight_n to_o the_o low_a basis_n and_o convey_v it_o into_o the_o receiver_n eight_o see_v fig._n the_o eight_o where_o we_o observe_v upon_o the_o exhaust_v of_o the_o receiver_n that_o the_o air_n in_o the_o bellows_o raise_v up_o the_o upper_a basis_n together_o with_o its_o weight_n and_o the_o air_n rise_v out_o at_o the_o vent_n manifest_o move_v the_o feather_n but_o when_o the_o receiver_n be_v quite_o exhaust_v and_o the_o weight_n upon_o the_o upper_a basis_n depress_v it_o violent_o we_o can_v not_o perceive_v that_o the_o feather_n be_v in_o the_o least_o move_v and_o the_o like_a be_v observe_v upon_o repeat_v the_o experiment_n experiment_n xxxvi_o the_o great_a and_o seem_a spontaneous_a ascent_n of_o water_n in_o a_o pipe_n fill_v with_o a_o compact_a body_n who_o particle_n be_v think_v incapable_a of_o imbibe_v it_o we_o take_v a_o slender_a pipe_n and_o have_v tie_v a_o linen-cloth_n to_o the_o jow_a orifice_n we_o fill_v it_o with_o minium_n and_o immerge_v it_o in_o water_n in_o a_o wide-mouthed_a glass_n about_o a_o inch_n the_o water_n ascend_v about_o 30_o inch_n and_o the_o experiment_n be_v again_o repeat_v in_o another_o it_o rise_v 40_o inch_n in_o which_o kind_n of_o experiment_n the_o follow_a particular_n be_v to_o be_v observe_v first_o that_o other_o powder_n be_v make_v use_n of_o instead_o of_o this_o the_o experiment_n do_v not_o succeed_v so_o well_o nor_o be_v the_o success_n much_o better_a when_o we_o make_v use_v of_o ink_n instead_o of_o water_n second_o our_o experiment_n succeed_v the_o better_a the_o fine_a and_o close_a the_o minium_n be_v but_o if_o the_o pipe_n be_v too_o small_a the_o event_n will_v not_o always_o be_v successful_a three_o we_o observe_v that_o the_o water_n ascend_v not_o to_o it_o be_v utmost_a under_o 30_o hour_n and_o sometime_o long_o four_o from_o hence_o it_o appear_v that_o the_o water_n in_o our_o tube_n rise_v without_o any_o swell_n of_o the_o side_n of_o the_o tube_n which_o some_o learned_a man_n ascribe_v the_o cause_n of_o water_n rise_v in_o filtre_n to_o five_o from_o hence_o it_o may_v be_v urge_v as_o probable_a that_o the_o sap_n in_o tree_n may_v rise_v after_o the_o like_a manner_n be_v promote_v by_o heat_n and_o a_o due_a texture_n of_o part_n experiment_n xxxvii_o of_o the_o seem_a spontaneous_a ascent_n of_o salt_n along_o the_o side_n of_o glass_n with_o a_o conjecture_n at_o the_o cause_n of_o it_o i_o have_v several_a time_n observe_v that_o the_o watery_a part_n of_o a_o solution_n of_o sea-salt_n or_o vitriol_n be_v evaporate_v the_o coagulate_v salt_n will_v creep_v up_o the_o side_n of_o wide-mouthed_a glass_n in_o which_o the_o solution_n be_v contain_v and_o not_o only_o so_o but_o if_o the_o experiment_n be_v long_o continue_v they_o will_v rise_v over_o the_o side_n of_o the_o glass_n and_o cover_v the_o external_a superficies_n with_o a_o crust_n of_o salt_n as_o for_o the_o cause_n of_o so_o strange_a a_o phaenomenon_n though_o i_o will_v not_o be_v positive_a in_o it_o yet_o it_o may_v not_o improbable_o depend_v on_o the_o like_a cause_n as_o the_o ascent_n of_o water_n in_o the_o tube_n mention_v in_o the_o forego_n experiment_n for_o we_o may_v observe_v that_o the_o edge_n of_o water_n be_v not_o only_o above_o the_o superficies_n of_o the_o rest_n of_o the_o water_n but_o sea-salt_n as_o well_o as_o several_a other_o crystallise_v at_o the_o top_n of_o the_o liquor_n they_o swim_v in_o and_o near_o the_o side_n of_o the_o glass_n their_o coagulation_n be_v promote_v by_o the_o coldness_n of_o it_o which_o salt_n when_o once_o the_o side_n of_o the_o glass_n be_v beset_v with_o they_o the_o water_n may_v rise_v to_o the_o top_n for_o the_o same_o reason_n that_o it_o do_v in_o the_o slender_a pipe_n before_o mention_v and_o salt_n carry_v up_o to_o the_o top_n of_o those_o and_o coagulate_v there_o still_o lay_v a_o further_a bottom_n for_o their_o ascent_n and_o so_o successive_o till_o they_o rise_v to_o the_o top_n of_o the_o viol_n and_o that_o there_o be_v passage_n betwixt_o these_o saline_a part_n for_o the_o water_n to_o ascend_v through_o appear_v since_o they_o may_v be_v break_v off_o in_o flake_n separate_v from_o each_o other_o and_o if_o it_o shall_v be_v think_v that_o the_o water_n in_o such_o a_o ascent_n will_v dissolve_v the_o salt_n it_o may_v be_v answer_v that_o the_o water_n be_v so_o much_o impregnate_v with_o salt_n already_o can_v imbibe_n no_o more_o and_o consequent_o for_o that_o reason_n when_o it_o run_v down_o the_o outside_n of_o the_o vessel_n coagulate_v by_o the_o way_n be_v too_o thick_a and_o full_a of_o salt_n to_o continue_v long_o fluid_a experiment_n xxxviii_o a_o attempt_n to_o measure_v the_o gravity_n of_o cylinder_n of_o the_o atmosphere_n so_o that_o it_o may_v be_v know_v and_o express_v by_o common_a weight_n size_n the_o weight_n of_o a_o pillar_n of_o air_n of_o a_o determinate_a size_n be_v desirous_a to_o know_v what_o be_v the_o weight_n of_o a_o atmospherical_a cylinder_n of_o air_n of_o a_o determinate_a diameter_n i_o cause_v a_o pipe_n to_o be_v make_v of_o brass_n who_o diameter_n be_v a_o inch_n and_o its_o length_n three_o one_o end_n of_o which_o be_v close_v up_o with_o a_o plate_n of_o brass_n i_o counterpoise_v it_o in_o a_o nice_a pair_n of_o scale_n and_o find_v that_o it_o be_v able_a to_o contain_v about_o 137_o drachm_n 45_o grain_n of_o mercury_n which_o be_v multiply_v by_o ten_o a_o cylinder_n of_o mercury_n of_o 30_o inch_n and_o consequent_o a_o atmospherical_a cylinder_n able_a to_o counterpoise_v it_o must_v amount_v to_o 12_o ounce_n and_o about_o 6_o drachm_n and_o by_o weigh_v water_n in_o this_o tube_n before_o the_o mercury_n be_v put_v into_o it_o the_o water_n weigh_v 10_o drachm_n 15_o grain_n the_o proportion_n of_o water_n to_o mercury_n seem_v as_o 13_o 18_o 41_o to_o 1._o but_o in_o estimate_v the_o weight_n of_o a_o cylindrical_a pillar_n of_o air_n it_o may_v be_v here_o requisite_a to_o advertise_v that_o i_o make_v use_v of_o a_o brass_n cylinder_n because_o the_o cavity_n of_o a_o glass_n tube_n be_v unfit_a for_o such_o a_o experiment_n since_o it_o be_v a_o hard_a thing_n to_o know_v whether_o the_o boar_n of_o such_o tube_n be_v equal_a throughout_o their_o diameter_n the_o weight_n of_o a_o cylinder_n of_o mercury_n be_v thus_o find_v it_o will_v not_o be_v very_o difficult_a to_o know_v the_o weight_n of_o a_o cylinder_n of_o a_o different_a diameter_n by_o the_o assistance_n of_o the_o doctrine_n of_o proportion_n and_o the_o 14_o proposition_n of_o the_o 12_o book_n of_o euclid_n element_n for_o since_o according_a to_o that_o cylinder_v of_o equal_a base_n be_v to_o one_o another_o as_o to_o their_o height_n and_o since_o by_o the_o second_o proposition_n of_o the_o same_o element_n such_o circle_n as_o the_o base_n of_o cylinder_n be_v to_o one_o another_o as_o the_o square_n of_o their_o diameter_n and_o since_o mercurial_a cylinder_n will_v bear_v the_o same_o proportion_n in_o weight_n as_o they_o do_v in_o bulk_n the_o rule_n will_v be_v that_o as_o the_o square_n of_o the_o diameter_n of_o the_o standard_n cylinder_n be_v to_o the_o square_n of_o the_o diameter_n of_o the_o cylinder_n propose_v so_o will_v the_o bulk_n of_o the_o former_a be_v to_o that_o of_o the_o latter_a and_o the_o weight_n of_o that_o to_o the_o weight_n of_o this_o so_o that_o the_o square_a of_o one_o inch_n be_v 1_o and_o the_o square_a of_o 2_o be_v four_o the_o weight_n of_o the_o latter_a will_v be_v four_o time_n the_o weight_n of_o the_o former_a experiment_n thirty-nine_o the_o attractive_a virtue_n of_o a_o loadstone_n in_o the_o exhaust_v receiver_n to_o try_v how_o far_o the_o account_n give_v of_o the_o attraction_n of_o a_o loadstone_n depend_v on_o what_o some_o modern_a philosopher_n teach_v viz._n that_o the_o effluvia_fw-la of_o a_o loadstone_n press_v away_o the_o air_n betwixt_o the_o body_n attract_v that_o air_n help_v the_o attraction_n by_o press_v against_o the_o opsite_a side_n of_o the_o stone_n we_o place_v a_o vigorous_a loadstone_n in_o our_o receiver_n have_v adapt_v a_o cap_n of_o steel_n to_o it_o to_o the_o low_a side_n of_o which_o a_o scale_n with_o 6_o ounce_n of_o troy_n weight_n be_v fix_v which_o be_v all_o the_o loadstone_n beside_o the_o steel_n and_o the_o scale_n be_v able_a to_o keep_v up_o all_o which_o be_v suspend_v at_o a_o button_n which_o be_v on_o purpose_n on_o the_o inside_n of_o the_o cover_n of_o the_o receiver_n we_o observe_v that_o though_o the_o receiver_n be_v exhaust_v as_o much_o again_o as_o
with_o steel_n afford_v spark_n of_o fire_n much_o big_a than_o those_o that_o be_v usual_o strike_v from_o flint_n whereas_o two_o cubial_a piece_n of_o loadstone_n be_v strike_v together_o afford_v spark_n but_o not_o so_o large_a as_o the_o former_a experiment_n v._n if_o a_o oblong_a loadstone_n be_v cool_v in_o a_o perpendicular_a posture_n the_o low_a end_n become_v its_o northern_a pole_n yet_o if_o that_o end_v instead_o of_o be_v expose_v to_o the_o effluvia_fw-la of_o the_o earth_n be_v cool_v whilst_o rest_v on_o the_o northern_a pole_n of_o a_o strong_a loadstone_n it_o will_v be_v the_o southern_a pole_n and_o will_v attract_v the_o north_n end_v of_o a_o needle_n experiment_n vi._n if_o a_o loadstone_n which_o have_v lose_v its_o attractive_a virtue_n be_v heat_v red_a hot_a and_o cool_v in_o a_o perpendicular_a posture_n upon_o the_o north_n pole_n of_o a_o vigorous_a loadstone_n and_o continue_v there_o for_o some_o time_n the_o attractive_a virtue_n be_v renew_v experiment_n vii_o a_o loadstone_n that_o have_v lose_v its_o attractive_a virtue_n by_o ignition_n will_v not_o acquire_v so_o durable_a a_o attractive_a virtue_n by_o be_v apply_v cold_a as_o hot_a to_o a_o loadstone_n n._n b._n though_o several_a loadstone_n lose_v their_o attractive_a virtue_n by_o ignition_n yet_o the_o observation_n do_v not_o hold_v in_o all_o since_o english_a once_o not_o only_o retain_v a_o directive_n but_o a_o attractive_a virtue_n after_o it_o experiment_n viii_o have_v heat_v two_o loadstone_n red_a hot_a and_o place_v they_o upon_o a_o plate_n of_o silver_n we_o find_v that_o as_o they_o grow_v cold_a it_o have_v a_o more_o sensible_a operation_n on_o they_o experiment_n ix_o we_o observe_v that_o one_o of_o the_o two_o magnet_n just_o now_o mention_v not_o only_o retain_v something_o of_o its_o magnetical_a quality_n when_o twice_o ignite_v but_o be_v thrust_v into_o file_n of_o steel_n carry_v a_o considerable_a quantity_n of_o they_o up_o with_o it_o which_o show_v how_o firm_o the_o quality_n of_o some_o magnet_n be_v lodge_v in_o it_o experiment_n x._o but_o we_o observe_v that_o the_o magnet_n which_o will_v thus_o carry_v file_n of_o steel_n along_o with_o it_o be_v heat_v again_o and_o sudden_o immerse_v in_o water_n when_o cool_a will_v not_o carry_v file_n of_o steel_n along_o with_o it_o as_o before_z nor_o will_v not_o move_v a_o well-poised_a needle_n except_o hold_v near_o to_o the_o point_n of_o it_o experiment_n xi_o a_o oblong_a loadstone_n of_o a_o black_a colour_n which_o weigh_v about_o three_o drachm_n by_o be_v keep_v some_o time_n in_o a_o charcoal_n fire_n lose_v much_o of_o its_o colour_n and_o about_o â…š_n of_o a_o grain_n in_o weight_n and_o to_o discover_v the_o affinity_n betwixt_o a_o loadstone_n and_o iron_n over_o i_o take_v a_o lump_n of_o it_o which_o be_v almost_o like_o white_a stone_n and_o observe_v that_o it_o do_v not_o only_o manifest_o move_v a_o needle_n but_o when_o ignite_v undergo_v a_o sensible_a change_n in_o colour_n and_o will_v attract_v the_o north_n end_v of_o a_o needle_n experiment_n xii_o to_o prove_v that_o some_o body_n not_o usual_o class_v among_o magnetical_a one_o have_v nevertheless_o magnetical_a quality_n i_o shall_v subjoin_v that_o a_o brick_n be_v divide_v into_o two_o oblong_a piece_n and_o heat_v in_o the_o fire_n acquire_v a_o verticity_n by_o cool_a north_n and_o south_n it_o be_v southward_o end_n be_v in_o some_o measure_n able_a to_o draw_v the_o north_n point_v of_o a_o mariner_n needle_n which_o the_o other_o end_n of_o the_o brick_n will_v drive_v away_o experiment_n xiii_o have_v without_o the_o help_n of_o iron_n instrument_n powder_v a_o black_a loadstone_n and_o pour_v spirit_n of_o salt_n upon_o the_o fine_a powder_n it_o cause_v such_o a_o ebullition_n as_o usual_o succeed_v the_o effusion_n of_o that_o liquor_n upon_o file_n of_o iron_n and_o likewise_o raise_v fetid_v fume_n and_o be_v keep_v for_o about_o two_o night_n in_o digestion_n extract_v a_o strong_a tincture_n be_v almost_o red_a and_o not_o green_a like_o that_o of_o mars_n yet_o will_v like_o that_o of_o iron_n turn_v a_o tincture_n of_o gall_n black_a which_o in_o several_a position_n will_v appear_v blue_a and_o to_o this_o i_o shall_v add_v that_o a_o solution_n of_o loadstone_n be_v make_v in_o aqua_fw-la regius_fw-la the_o tincture_n appear_v to_o be_v of_o a_o golden_a colour_n experiment_n fourteen_o have_v powder_v a_o ignited_a loadstone_n and_o digest_v spirit_n of_o salt_n upon_o it_o it_o extract_v a_o tincture_n which_o be_v much_o like_o that_o of_o trouble_a gold_n and_o will_v turn_v a_o infusion_n of_o gall_n black_a this_o tincture_n be_v evaporate_v will_v not_o shoot_v into_o crystal_n but_o upon_o a_o affusion_n of_o salt_n of_o tartar_n yield_v a_o precipitate_v much_o resemble_v a_o solution_n of_o vitriol_n whereas_o another_o part_n of_o it_o upon_o a_o addition_n of_o spirit_n of_o fermented_a urine_n afford_v a_o yellowish_a red_n precipitate_v experiment_n xv._o have_v wet_a a_o red_a mineral_n which_o i_o suspect_v to_o be_v iron_n over_o with_o linseed_n oil_n and_o preserve_v the_o powder_n in_o a_o red_a hot_a crucible_n for_o about_o two_o hour_n it_o be_v turn_v black_a and_o when_o cool_a have_v acquire_v a_o magnetical_a virtue_n which_o another_o portion_n of_o it_o do_v though_o it_o be_v not_o as_o the_o other_o wet_a with_o that_o oil_n chap._n xxv_o experiment_n and_o note_n about_o the_o mechaninal_a origin_n and_o production_n of_o electricity_n electricity_n of_o the_o mechanical_a production_n of_o electricity_n though_o electricity_n be_v a_o quality_n general_o reckon_v among_o the_o number_n of_o those_o that_o be_v term_v occult_a one_o yet_o there_o be_v no_o need_n to_o ascribe_v it_o to_o the_o power_n of_o a_o substantial_a form_n since_o it_o may_v be_v mechanical_o produce_v by_o material_a effluvium_n issue_v from_o and_o return_v to_o the_o electrical_a body_n assist_v in_o its_o operation_n by_o the_o external_n air._n there_o be_v several_a modern_a hypothesis_n which_o endeavour_v to_o account_v for_o electricity_n as_o the_o learned_a cabeus_n who_o suppose_v that_o the_o steam_n of_o the_o electrical_a body_n discuss_v and_o expel_v the_o ambient_fw-la air_n that_o when_o drive_v off_o be_v violent_o oppose_v by_o the_o atmospherical_a air_n and_o be_v drive_v back_o upon_o the_o body_n say_v to_o be_v attract_v force_v it_o up_o to_o the_o electrical_a body_n another_o hypothesis_n propose_v by_o the_o ingenious_a sir_n kenelm_n digby_n and_o embrace_v by_o dr._n brown_n and_o several_a other_o be_v that_o the_o electrick_a body_n be_v rub_v emit_v unctuous_a steam_n which_o be_v cool_v by_o the_o external_n air_n shrink_v back_o and_o carry_v along_o with_o they_o those_o light_a body_n which_o lie_v in_o their_o way_n of_o this_o opinion_n be_v gassendus_fw-la who_o suppose_v these_o unctuous_a steam_n to_o cross_v each_o other_o and_o by_o get_v into_o the_o pore_n of_o straw_n and_o other_o attract_a body_n take_v fast_o hold_v of_o they_o and_o when_o they_o shrink_v back_o draw_v those_o body_n along_o with_o they_o cartesius_n reject_v these_o hypothesis_n supplant_v another_o which_o i_o can_v in_o few_o word_n lay_v down_o but_o all_o the_o reason_n he_o reject_v they_o be_v because_o he_o suppose_v glass_n incapable_a of_o emit_v effluvia_fw-la it_o will_v be_v sufficient_a to_o remove_v that_o difficulty_n to_o observe_v that_o if_o two_o piece_n of_o glass_n be_v rub_v together_o they_o emit_v odorous_a and_o sometime_o very_o stink_v effluvia_fw-la but_o without_o take_v any_o further_a notice_n of_o what_o modern_n have_v lay_v down_o about_o electricity_n since_o they_o allow_v it_o to_o be_v perform_v by_o virtue_n of_o subtle_a emanation_n from_o the_o attract_v body_n it_o may_v suffice_v that_o i_o proceed_v to_o mention_v some_o phenomena_n that_o make_v we_o probable_o believe_v it_o do_v by_o virtue_n of_o mechanical_a affection_n either_o of_o the_o attract_v body_n or_o both_o and_o first_o it_o be_v observe_v that_o most_o if_o not_o all_o electrical_a body_n attract_v not_o till_o warm_v by_o which_o heat_n they_o be_v enable_v to_o send_v forth_o eufflvia_n second_o amber_n attract_v most_o vigorous_o when_o warm_v by_o rub_v and_o chafe_v by_o which_o action_n the_o motion_n of_o the_o effluvia_fw-la as_o well_o as_o of_o its_o internal_a part_n be_v more_o agreeable_o modify_v than_o by_o the_o action_n of_o fire_n but_o if_o the_o part_n of_o the_o amber_n be_v first_o put_v into_o motion_n by_o the_o fire_n and_o then_o modify_v by_o chafe_v it_o soon_o become_v electrical_a three_o tersion_n as_o well_o as_o chafe_v promote_v electricity_n by_o remove_v those_o body_n which_o may_v choke_v the_o pore_n of_o the_o amber_n and_o obstruct_v the_o efflux_n of_o emanation_n by_o stick_v to_o the_o surface_n of_o it_o
artificial_a spa_n who_o taste_n not_o only_o agree_v with_o that_o of_o the_o natural_a spaw_n but_o it_o will_v like_o tunbridge_n or_o the_o german_a spa_n turn_v a_o tincture_n of_o gaul_n purple_n experiment_n v._n the_o bezoar_a stone_n be_v a_o medicine_n of_o great_a use_n not_o only_o in_o malignant_a fever_n but_o the_o plague_n and_o by_o reason_n of_o its_o dearness_n apt_a to_o be_v counterfeit_v i_o shall_v add_v the_o follow_a way_n of_o distinguish_v betwixt_o good_a and_o bad_a viz._n by_o digest_v about_o fifty_o grain_n fine_o powder_v with_o six_o drachm_n of_o spirit_n of_o nitre_n in_o a_o digestive_a furnace_n for_o after_o they_o have_v be_v mix_v some_o time_n the_o spirit_n begin_v to_o dissolve_v the_o powder_n and_o extract_v a_o red_a tincture_n which_o be_v place_v in_o a_o northward_o window_n about_o eight_o and_o forty_o hour_n shoot_v into_o crystal_n much_o like_o those_o of_o salt-petre_n to_o show_v that_o the_o purge_n or_o astringent_a quality_n of_o body_n depend_v on_o the_o disposition_n of_o the_o patient_n as_o well_o as_o of_o the_o agent_n i_o shall_v intimate_v that_o a_o certain_a lady_n have_v eat_v a_o toast_n with_o cinnamon_n upon_o it_o be_v so_o violent_o purge_v for_o about_o two_o day_n that_o it_o bring_v convulsion_n and_o a_o spasmus_fw-la cinycus_n upon_o she_o which_o be_v not_o remove_v in_o three_o year_n a_o physician_n to_o who_o i_o communicate_v several_a thing_n send_v i_o the_o follow_a account_n in_o a_o letter_n from_o dublin_n date_v feb._n 27._o 1682._o viz._n that_o he_o find_v the_o good_a effect_n of_o ens_fw-la veneris_fw-la in_o remove_v the_o subsultus_fw-la tendinum_fw-la in_o a_o febris_n petechialis_n which_o be_v fatal_a to_o many_o for_o about_o fourteen_o month_n the_o method_n i_o take_v in_o this_o fever_n be_v if_o the_o patient_n be_v costive_a first_o to_o prescribe_v a_o glister_n and_o a_o large_a blister_a plaster_n between_o the_o shoulder_n keep_v it_o run_v till_o the_o declension_n of_o the_o distemper_n all_o this_o time_n i_o prescribe_v emulsion_n of_o aqua_fw-la aronis_fw-la card._n bened._n citri_fw-la totius_fw-la &_o syr._n gratorum_fw-la cum_fw-la aceto_n orange_n and_o buttermilk_n posset_n etc._n etc._n i_o avoid_v the_o use_n of_o all_o those_o thing_n that_o quicken_v the_o circulation_n of_o the_o blood_n and_o i_o rather_o prescribe_v blister_v to_o prevent_v than_o cure_v affection_n of_o the_o genus_fw-la nervosum_fw-la because_o the_o matter_n be_v once_o fix_v in_o those_o part_n they_o become_v ineffectual_a a_o design_v chemical_a medicine_n consider_v that_o the_o menstruum_n usual_o employ_v in_o open_v and_o prepare_v the_o body_n of_o steel_n be_v acid_n i_o try_v to_o do_v it_o in_o the_o follow_a method_n have_v dissolve_v fresh_a file_n of_o steel_n in_o a_o warm_a place_n in_o a_o sufficient_a quantity_n of_o spirit_n of_o fermented_a urine_n high_o rectify_v per_n se_fw-la the_o filtrated_a solution_n have_v a_o taste_n different_a from_o all_o other_o chalybeat_a preparation_n and_o be_v set_v in_o a_o cold_a window_n in_o three_o day_n precipitate_v a_o powder_n of_o a_o green_a colour_n yet_o the_o decantated_a liquor_n by_o evaporation_n will_v not_o in_o the_o least_o cristalize_v this_o preparation_n have_v effect_n quite_o different_a from_o those_o preparation_n make_v by_o acid_n and_o be_v much_o more_o agreeable_a to_o some_o person_n a_o design_v chemical_a medicine_n that_o i_o may_v try_v whether_o a_o metalline_a sulphur_n may_v be_v obtain_v from_o steel_n i_o pitch_v upon_o a_o menstruum_fw-la void_a of_o sulphur_n that_o if_o the_o preparation_n shall_v yield_v sulphur_n it_o may_v not_o be_v suspect_v to_o come_v from_o the_o menstruum_fw-la wherefore_o i_o dissolve_a steel_n in_o spirit_n of_o sea-salt_n and_o upon_o evaporation_n obtain_v very_o curious_a cristal_n from_o which_o we_o draw_v by_o distillation_n in_o a_o retort_n a_o good_a quantity_n of_o liquor_n which_o come_v over_o in_o the_o form_n of_o steam_n which_o have_v a_o very_a sulphureous_a smell_n which_o be_v rectify_v and_o mix_v with_o aqua_fw-la fortis_fw-la will_v dissolve_v gold_n and_o give_v it_o the_o colour_n of_o silver_n which_o may_v intimate_v to_o we_o how_o much_o the_o vitriol_n of_o metal_n may_v differ_v according_a to_o the_o difference_n of_o the_o menstruum_n which_o dissolve_v they_o since_o our_o green_a vitriol_n afford_v liquor_n different_a from_o that_o make_v with_o oil_n of_o vitriol_n beside_o which_o it_o may_v be_v worth_a while_n to_o note_n that_o though_o neither_o common_a or_o roman_a vitriol_n will_v dissolve_v in_o spirit_n of_o wine_n which_o be_v inflammable_a yet_o our_o vitriol_n will_v ready_o and_o here_o it_o will_v not_o be_v unnecessary_a to_o hint_n by_o the_o by_o that_o a_o solution_n of_o our_o saline_a vitriol_n may_v not_o improbable_o be_v of_o use_n in_o wound_n be_v a_o very_a powerful_a astringent_a and_o fit_a to_o prevent_v the_o breed_n of_o worm_n in_o wound_n dispose_v to_o abound_v with_o such_o in_o cold_a climate_n but_o what_o we_o chief_o design_v in_o this_o experiment_n and_o what_o be_v most_o to_o be_v take_v notice_n of_o be_v that_o the_o dry_a substance_n raise_v by_o the_o fire_n be_v distinguish_v by_o accident_n into_o three_o kind_n of_o substance_n first_o a_o powder_n which_o when_o expose_v to_o the_o air_n turn_v yellow_a second_o a_o deep_a colour_a substance_n betwixt_o red_a and_o brown_a of_o part_n much_o grosser_n than_o the_o former_a three_o a_o substance_n of_o a_o shine_a red_a who_o part_n be_v very_o fine_a and_o subtle_a the_o caput_fw-la mortuum_n be_v change_v into_o a_o talky_a substance_n consist_v of_o lamelloe_n situate_v and_o connect_v much_o after_o the_o same_o manner_n as_o the_o thick_a plate_n which_o make_v up_o muscovia_n glass_n chap._n vii_o experiment_n and_o observation_n solitary_a experiment_n i._o a_o notable_a comminution_n of_o gold_n into_o powder_n that_o will_v sink_v in_o water_n powder_n a_o comminution_n of_o gold_n into_o powder_n we_o dissolve_v a_o grain_n of_o refine_a gold_n in_o aqua_fw-la regius_fw-la add_v about_o two_o spoonful_n of_o water_n to_o the_o solution_n in_o which_o mixture_n a_o small_a piece_n of_o metal_n be_v suspend_v it_o in_o a_o few_o day_n afford_v a_o deep_a colour_a precipitate_v which_o be_v so_o light_a that_o it_o be_v a_o considerable_a time_n in_o subside_v and_o as_o easy_o raise_v in_o the_o form_n of_o mud_n upon_o a_o agitation_n of_o the_o vessel_n where_o it_o be_v to_o be_v note_v that_o though_o upon_o a_o agitation_n the_o liquor_n at_o the_o first_o seem_v opacous_a yet_o in_o a_o little_a time_n it_o appear_v to_o be_v of_o a_o fine_a purple_a colour_n so_o that_o the_o particle_n of_o gold_n be_v so_o far_o divide_v as_o by_o be_v scatter_v through_o two_o ounce_n of_o water_n to_o give_v a_o tincture_n to_o it_o experiment_n ii_o a_o proof_n of_o the_o metalline_a nature_n of_o granate_n &_o the_o metalline_a nature_n of_o granate_n c._n &_o in_o confirmation_n of_o what_o i_o have_v elsewhere_o deliver_v viz._n that_o the_o virtue_n of_o gem_n depend_v on_o a_o mixture_n of_o metalline_a juice_n with_o the_o particle_n of_o those_o gem_n whilst_o in_o fluid_a form_n i_o shall_v take_v notice_n that_o a_o granate_n of_o a_o dark_a colour_n be_v apply_v to_o a_o loadstone_n it_o so_o strong_o attract_v it_o as_o not_o without_o violence_n to_o be_v separate_v from_o it_o experiment_n iii_o i_o be_o tell_v by_o a_o ingenious_a gentleman_n that_o he_o see_v a_o flat_a saphir_n in_o the_o east-indies_n which_o have_v a_o small_a cavity_n in_o the_o middle_n of_o it_o fill_v with_o a_o fluid_a substance_n which_o be_v not_o so_o apt_a to_o petryfie_v as_o the_o rest_n experiment_n iu._n to_o prove_v that_o fish_n hear_v under_o water_n i_o shall_v here_o lay_v down_o a_o relation_n which_o i_o receive_v from_o a_o ingenious_a gentleman_n who_o in_o a_o garden_n near_o genoa_n observe_v the_o gardener_n to_o assemble_v the_o fish_n in_o the_o pond_n together_o by_o a_o certain_a noise_n which_o he_o make_v experiment_n v._n to_o illustrate_v and_o confirm_v what_o have_v elsewhere_o be_v observe_v concern_v the_o various_a colour_n refract_v by_o the_o minute_n and_o part_n of_o solid_n i_o shall_v here_o note_v that_o a_o globe_n of_o rock-crystal_n be_v saw_v in_o two_o the_o new_a superficies_n refract_v the_o ray_n of_o the_o sun_n so_o as_o to_o exhibit_v colour_n more_o lively_a than_o those_o of_o a_o rainbow_n which_o be_v refract_v this_o way_n or_o that_o as_o the_o superficies_n of_o the_o stone_n be_v different_o situate_v in_o reference_n to_o the_o sunbeam_n and_o the_o like_a phaenomena_n succeed_v the_o like_a trial_n with_o a_o touchstone_n which_o experiment_n may_v confirm_v what_o have_v elsewhere_o be_v deliver_v concern_v colour_n of_o body_n depend_v on_o a_o
country_n near_o armsterdam_n a_o sort_n of_o mercury_n in_o the_o custody_n of_o a_o farmer_n which_o be_v of_o a_o golden_a colour_n throughout_o and_o will_v if_o put_v upon_o the_o fire_n in_o a_o proper_a vessel_n precipitate_v in_o the_o form_n of_o a_o red_a powder_n and_o i_o be_o likewise_o tell_v by_o a_o judicious_a physician_n that_o he_o see_v in_o the_o possession_n of_o a_o stranger_n a_o sort_n of_o mercury_n who_o small_a globule_n be_v of_o a_o green_a colour_n chap._n x._o various_a observation_n about_o diamond_n diamond_n observation_n about_o diamond_n diamond_n be_v not_o only_o the_o most_o noble_a but_o valuable_a among_o gem_n it_o may_v be_v worth_a our_o while_n to_o consider_v they_o a_o little_a and_o to_o relate_v what_o observation_n i_o have_v be_v able_a to_o make_v about_o they_o and_o i._o it_o be_v observe_v that_o diamond_n be_v so_o much_o hard_a than_o other_o body_n that_o they_o require_v a_o great_a force_n to_o cut_v and_o polish_v they_o than_o other_o gem_n ii_o it_o be_v observe_v by_o one_o who_o have_v long_o deal_v in_o diamond_n that_o those_o which_o be_v now_o bring_v over_o be_v much_o soft_a than_o those_o of_o the_o old_a rock_n iii_o the_o tradition_n be_v false_a that_o diamond_n can_v be_v cut_v without_o be_v soften_v in_o goat_n blood_n the_o contrary_a be_v find_v by_o diamond_n cutter_n and_o a_o experience_a diamond-cutter_n have_v inform_v i_o that_o he_o use_v to_o polish_v diamond_n with_o the_o dust_n which_o he_o obtain_v by_o pound_v of_o bore_v diamond_n in_o a_o iron_n mortar_n iv_o though_o it_o be_v a_o general_a receive_v opinion_n that_o diamond_n have_v a_o weight_n proportionable_a to_o their_o solidity_n yet_o i_o find_v among_o my_o experiment_n that_o a_o diamond_n be_v weigh_v hydrostatical_o in_o wattr_n be_v to_o its_o proportion_n of_o that_o liquor_n as_o 2_o 22_o 23_o to_o 1_o so_o that_o it_o do_v not_o equal_a its_o treeble_a proportion_n of_o water_n in_o weight_n v._o i_o be_o inform_v that_o if_o diamond_n be_v cloudy_a sometime_o one_o as_o big_a again_o as_o a_o pea_n will_v be_v at_o least_o four_o grain_n heavy_a than_o another_o of_o a_o equal_a size_n vi_o the_o natural_a shape_n of_o diamond_n be_v uncertain_a since_o most_o of_o they_o which_o we_o see_v be_v only_o break_v piece_n who_o figure_n be_v very_o irregular_a yet_o i_o have_v see_v some_o which_o seem_v to_o consist_v of_o triangle_n terminate_n in_o solid_a angle_n and_o i_o be_o tell_v by_o one_o who_o cut_v a_o great_a number_n that_o those_o which_o be_v of_o a_o regular_a figure_n be_v usual_o four_o cornered_a vii_o it_o be_v observe_v that_o in_o diamond_n there_o be_v a_o regular_a tendency_n of_o fiber_n or_o thin_a plate_n which_o lie_v parallel_v to_o each_o other_o which_o may_v be_v call_v the_o grain_n of_o they_o which_o way_n they_o may_v easy_o be_v divide_v though_o not_o against_o that_o grain_n without_o difficulty_n viii_o as_o to_o the_o colour_n of_o diamond_n though_o it_o general_o be_v so_o well_o know_v as_o not_o to_o need_v to_o be_v describe_v yet_o in_o the_o east-indies_n some_o have_v be_v observe_v to_o be_v of_o a_o pale_a blue_a colour_n and_o mounseur_fw-fr tavernier_n say_v he_o have_v see_v one_o of_o a_o very_a red_a colour_n and_o a_o relation_n of_o i_o wear_v a_o diamond_n in_o a_o ring_n which_o be_v of_o a_o golden_a yellow_a beside_o which_o variety_n of_o colour_n i_o have_v observe_v one_o among_o a_o great_a many_o in_o the_o east-india_n house_n who_o colour_n be_v green_a ix_o and_o i_o have_v see_v a_o diamond_n bring_v from_o the_o east-indies_n which_o have_v six_o triangular_a side_n and_o a_o cavity_n in_o one_o of_o they_o in_o which_o diamond_n the_o fiber_n may_v easy_o be_v discern_v and_o the_o merchant_n to_o which_o this_o belong_v tell_v i_o he_o have_v see_v one_o bring_v from_o borneo_n which_o before_o it_o be_v polish_v be_v black_a though_o after_o it_o appear_v to_o be_v a_o clear_a stone_n x._o to_o conclude_v this_o chapter_n i_o shall_v add_v the_o follow_a relation_n which_o will_v contenance_v what_o i_o have_v elsewhere_o relate_v viz._n that_o the_o virtue_n of_o gem_n may_v probable_o arise_v from_o metalline_a tincture_n incorporate_v with_o the_o matter_n of_o they_o whilst_o it_o be_v soft_a and_o fluid_a the_o observation_n be_v that_o have_v apply_v a_o loadstone_n to_o a_o small_a diamond_n which_o be_v pretty_a dull_a it_o will_v not_o only_o be_v take_v up_o by_o it_o but_o will_v at_o a_o considerable_a distance_n leap_v up_o to_o it_o to_o these_o observation_n i_o shall_v only_o add_v that_o there_o be_v several_a other_o observation_n which_o be_v scatter_v up_o and_o down_o my_o write_n which_o i_o shall_v not_o repeat_v here_o they_o proper_o enough_o belong_v to_o those_o writing_n the_o work_n of_o the_o honourable_a robert_n boil_v esq_n epitomise_v book_n v._o part_n iii_o chap._n i._o of_o the_o original_a and_o virtue_n of_o gem_n gem_n of_o the_o 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crystal_n when_o in_o a_o fluid_fw-la than_o a_o solid_a ambient_fw-la substance_n for_o which_o reason_n if_o a_o glass-bottle_n be_v fill_v with_o a_o solution_n of_o nitre_n and_o the_o water_n have_v be_v pretty_a well_o consume_v by_o boil_v the_o salt_n will_v shoot_v into_o a_o mass_n who_o side_n next_o the_o glass_n answer_v the_o form_n of_o it_o but_o that_o next_o the_o water_n will_v be_v set_v with_o prismatical_a crystal_n of_o a_o nitrous_a figure_n and_o i_o have_v see_v indian_a granate_n take_v out_o of_o a_o lump_n of_o heterogeneous_a matter_n some_o of_o who_o surface_n be_v triangle_n other_o paralellogram_n etc._n etc._n according_a the_o figure_n of_o the_o cell_n they_o be_v contain_v in_o and_o i_o have_v see_v not_o only_o bristol_n stone_n but_o cornish_a diamond_n curious_o shape_v like_o crystal_n of_o salt_n petre_n and_o i_o have_v likewise_o see_v ruby_n very_o geometrical_o shape_v and_o among_o other_o rarity_n a_o diamond_n who_o surface_n consist_v of_o several_a triangular_a planes_n which_o contain_v several_a lesser_a within_o they_o which_o for_o the_o most_o part_n meet_v at_o a_o point_n and_o form_v a_o obtuse_a solid_a angle_n and_o i_o have_v observe_v that_o most_o diamond_n have_v angular_a and_o determinate_a shape_n and_o in_o favour_n of_o the_o hypothesis_n already_o lay_v down_o i_o shall_v add_v that_o precious_a stone_n be_v dissolve_v in_o a_o particular_a menstruum_fw-la they_o shoot_v into_o crystal_n like_o those_o of_o nitre_n but_o insipid_a and_o i_o have_v observe_v that_o though_o bristol_n stone_n have_v on_o the_o upper_a part_n six_o smooth_a side_n which_o be_v so_o cut_v as_o to_o represent_v six_o smooth_a triangle_n which_o terminate_v like_o those_o of_o a_o pyramid_n in_o a_o virtex_n yet_o the_o low_a part_n which_o be_v next_o the_o matter_n it_o adhere_v to_o make_v it_o appear_v less_o transparent_a and_o conformable_a in_o figure_n to_o the_o cavity_n of_o its_o womb_n this_o be_v more_o 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