certain_a physiological_a essay_n and_o other_o tract_n write_v at_o distant_a time_n and_o on_o several_a occasion_n by_o the_o honourable_a robert_n boyle_n the_o second_o edition_n wherein_o some_o of_o the_o tract_n be_v enlarge_v by_o experiment_n and_o the_o work_n be_v increase_v by_o the_o addition_n of_o a_o discourse_n about_o the_o absolute_n rest_n in_o body_n london_n print_v for_o henry_n herringman_n at_o the_o blue_a anchor_n in_o the_o low_a walk_n of_o the_o new-exchange_n m_n dc_o lxix_o physiological_a essay_n london_n print_v for_o henry_n herringman_n mdclxix_o a_o advertisement_n to_o the_o reader_n prefix_v to_o the_o first_o edition_n put_v forth_o a._n d._n 1661._o the_o publisher_n desire_v that_o the_o reader_n shall_v be_v inform_v that_o neither_o be_v the_o follow_a treatise_n write_v near_o about_o the_o same_o time_n some_o of_o they_o be_v divers_a year_n elder_a than_o some_o other_o nor_o yet_o be_v they_o now_o publish_v in_o the_o same_o order_n that_o they_o be_v write_v in_o for_o the_o first_o of_o these_o discourse_n though_o pen_v about_o four_o year_n since_o be_v not_o only_o write_v after_o the_o second_o three_o and_o four_o but_o after_o divers_a other_o essay_n which_o the_o author_n have_v yet_o lie_v by_o he_o among_o his_o paper_n it_o be_v intend_v for_o a_o kind_n of_o introduction_n to_o all_o those_o treatise_n which_o under_o several_a name_n but_o chief_o that_o of_o physiological_a essay_n the_o author_n have_v then_o compose_v but_o have_v during_o the_o late_a confusion_n so_o dispose_v of_o his_o paper_n to_o secure_v they_o that_o he_o can_v not_o himself_o seasonable_o recover_v they_o and_o be_v engage_v by_o promise_n to_o some_o friend_n to_o let_v about_o half_a a_o dozen_o of_o his_o small_a tract_n come_v abroad_o into_o the_o world_n by_o such_o a_o time_n he_o be_v fain_o to_o send_v the_o follow_a treatise_n to_o the_o press_n as_o they_o come_v some_o at_o one_o time_n some_o at_o another_o to_o his_o hand_n and_o this_o his_o occasion_n do_v now_o and_o then_o reduce_v he_o to_o do_v in_o such_o haste_n that_o he_o can_v not_o attend_v the_o correct_v either_o the_o printer_n lapse_n or_o his_o own_o and_o particular_o be_v oblige_v partly_o by_o haste_n and_o partly_o by_o a_o distemper_n in_o his_o eye_n to_o send_v away_o the_o history_n of_o firmness_n without_o so_o much_o as_o read_v it_o over_o all_o which_o it_o be_v hope_v the_o equitable_a reader_n will_v consider_v in_o his_o favour_n and_o bear_v with_o what_o may_v be_v imputable_a to_o such_o circumstance_n i_o shall_v add_v nothing_o further_a be_v it_o not_o that_o to_o save_v the_o reader_n the_o trouble_n of_o guess_v who_o be_v mean_v by_o that_o pyrophilus_n to_o who_o most_o of_o the_o follow_a treatise_n be_v address_v i_o think_v it_o requisite_a to_o inform_v he_o that_o the_o person_n veil_v under_o that_o name_n be_v that_o hopeful_a young_a gentleman_n mr._n richard_n jones_n only_a son_n to_o the_o lord_n viscount_n ranelagh_n and_o a_o excellent_a lady_n sister_n to_o the_o author_n a_o advertisement_n about_o the_o second_o edition_n for_o the_o ease_n of_o those_o that_o have_v already_o peruse_v the_o first_o edition_n of_o the_o physiological_a essay_n and_o other_o tract_n that_o accompany_v they_o the_o author_n take_v the_o pain_n to_o include_v the_o principal_a thing_n add_v in_o the_o present_a edition_n in_o parathese_n that_o the_o chief_a addition_n may_v be_v find_v out_o without_o the_o pain_n of_o read_v over_o again_o the_o whole_a book_n but_o find_v these_o parathese_n to_o have_v be_v by_o a_o oversight_n of_o the_o press_n omit_v some_o amends_o be_v think_v fit_a to_o be_v endeavour_v to_o be_v make_v for_o that_o by_o intimate_v that_o the_o experiment_n that_o enlarge_v this_o new_a edition_n be_v for_o the_o most_o part_n to_o be_v find_v in_o the_o follow_a page_n of_o it_o page_n 196.202.222.226.227.241.243.246_o from_o pag._n 252_o to_o 255._o p._n 257._o p._n 238_o 239._o p._n 263._o from_o p._n 289_o to_o 291._o p._n 32_o and_o 33._o p._n 169_o 170._o a_o proemial_a essay_n wherein_o with_o some_o consideration_n touch_v experimental_a essay_n in_o general_n be_v interweave_v such_o a_o introduction_n to_o all_o those_o write_v by_o the_o author_n as_o be_v necessary_a to_o be_v peruse_v for_o the_o better_a understanding_n of_o they_o i_o know_v not_o pyrohilus_n whether_o what_o you_o will_v meet_v with_o in_o the_o ensue_a discourse_n will_v prove_v worthy_a of_o your_o take_a notice_n of_o it_o yet_o i_o dare_v tell_v you_o that_o if_o all_o my_o endeavour_n to_o serve_v you_o be_v not_o duty_n i_o shall_v think_v i_o may_v deserve_v your_o thanks_o for_o venture_v to_o write_v they_o for_o your_o sake_n for_o i_o be_o sufficient_o sensible_a both_o how_o unlearned_a i_o be_o and_o in_o how_o learn_v a_o age_n i_o presume_v to_o write_v nor_o have_v the_o great_a number_n of_o those_o escape_v my_o observation_n who_o find_v it_o a_o much_o easy_a task_n to_o censure_v experimental_a composure_n than_o to_o write_v such_o endeavour_v to_o acquire_v the_o title_n of_o judicious_a by_o condemn_v all_o thing_n that_o themselves_o have_v not_o write_v or_o think_v on_o and_o indeed_o pyrophilus_n i_o have_v beside_o these_o so_o many_o other_o discourage_a consideration_n in_o my_o eye_n whilst_o i_o be_v set_v down_o the_o follow_a essay_n that_o i_o shall_v scarce_o have_v prosecute_v a_o design_n so_o full_a of_o trouble_n and_o so_o unlikely_a by_o its_o success_n to_o make_v amends_o for_o it_o if_o i_o have_v think_v it_o free_a for_o the_o secure_n of_o my_o own_o quiet_a and_o credit_n to_o suppress_v observation_n which_o may_v prove_v serviceable_a to_o you_o who_o have_v sufficient_o converse_v with_o book_n be_v now_o desirous_a to_o begin_v to_o converse_v with_o thing_n themselves_o but_o i_o must_v confess_v i_o look_v upon_o experimental_a truth_n as_o matter_n of_o so_o great_a concernment_n to_o mankind_n that_o in_o spite_n of_o the_o just_a sense_n i_o have_v of_o my_o own_o disability_n i_o be_o deter_v from_o comply_v with_o those_o inclination_n and_o motive_n that_o endear_v silence_n to_o i_o by_o consider_v the_o fate_n of_o he_o who_o though_o he_o have_v less_o entrust_v to_o he_o than_o any_o of_o his_o companion_n be_v yet_o severe_o punish_v for_o bury_v his_o single_a talon_n and_o though_o pyrophilus_n i_o can_v not_o without_o such_o reluctancy_n resolve_v to_o write_v yet_o i_o find_v it_o much_o more_o uneasy_a to_o resolve_v to_o write_v so_o soon_o for_o i_o can_v not_o but_o consider_v that_o be_v yet_o but_o very_o young_a not_o only_o in_o year_n but_o what_o be_v much_o worse_o in_o experience_n i_o have_v yet_o much_o more_o need_n to_o learn_v than_o ability_n to_o teach_v and_o i_o consider_v too_o that_o after_o a_o man_n be_v grow_v somewhat_o acquaint_v with_o thing_n themselves_o and_o have_v take_v some_o general_a notice_n of_o the_o cognation_n difference_n and_o tendency_n of_o their_o property_n he_o may_v every_o day_n so_o much_o improve_v his_o knowledge_n that_o i_o be_o apt_a to_o think_v that_o if_o god_n shall_v be_v please_v to_o protract_v my_o life_n a_o few_o year_n long_o i_o shall_v at_o the_o end_n of_o they_o be_v able_a to_o look_v upon_o what_o i_o have_v hitherto_o write_v with_o pity_n if_o not_o with_o blush_n and_o i_o have_v often_o observe_v that_o it_o be_v wont_a to_o happen_v in_o the_o production_n of_o the_o mind_n as_o in_o those_o of_o the_o body_n for_o as_o those_o that_o apply_v themselves_o to_o procreation_n too_o young_a and_o before_o they_o have_v attain_v to_o their_o full_a vigour_n and_o strength_n do_v general_o both_o hinder_v their_o own_o growth_n and_o become_v the_o parent_n but_o of_o weak_a and_o short-lived_a child_n so_o they_o that_o too_o early_o and_o before_o their_o judgement_n and_o experience_n be_v full_o ripe_a addict_v themselves_o to_o write_v book_n do_v common_o both_o hinder_v their_o own_o proficiency_n in_o knowledge_n and_o write_v but_o immature_n and_o therefore_o seldom_o last_a treatise_n nor_o shall_v i_o pyrophilus_n have_v ever_o prevail_v with_o myself_o to_o present_v you_o so_o early_a these_o discourse_n since_o by_o keep_v they_o long_o by_o i_o i_o may_v easy_o by_o second_o thought_n and_o fresh_a experience_n be_v enable_v to_o correct_v and_o enrich_v they_o do_v not_o the_o frequent_a and_o dangerous_a distemper_n to_o which_o my_o very_a sickly_a constitution_n have_v of_o late_o render_v i_o obnoxious_a make_v i_o just_o doubt_v whether_o or_o no_o if_o i_o shall_v long_o forbear_v to_o write_v death_n will_v not_o soon_o come_v than_o the_o expect_a maturity_n of_o age_n and_o judgement_n and_o though_o i_o have_v no_o such_o consideration_n to_o move_v i_o to_o
think_v it_o therefore_o very_o fit_a and_o high_o useful_a that_o some_o speculative_a wit_n well_o verse_v in_o mathematical_a principle_n and_o mechanical_a contrivance_n shall_v employ_v themselves_o in_o deduce_v the_o chief_a modes_n or_o quality_n of_o matter_n such_o as_o be_v heat_n cold_a etc._n etc._n and_o the_o state_n or_o condition_n of_o it_o if_o we_o think_v fit_a to_o distinguish_v these_o from_o its_o quality_n as_o fluid_v firm_a brittle_a flexible_a and_o the_o like_a from_o the_o abovementioned_a most_o primitive_a and_o simple_a affection_n thereof_o and_o i_o think_v the_o commonwealth_n of_o learn_v exceed_o beholden_a to_o those_o heroic_a wit_n that_o do_v so_o much_o as_o plausible_o perform_v something_o in_o this_o kind_n but_o i_o think_v too_o we_o be_v not_o to_o despise_v all_o those_o account_n of_o particular_a effect_n which_o be_v not_o immediate_o deduce_v from_o those_o primitive_a affection_n of_o either_o atom_n or_o the_o insensible_a particle_n of_o matter_n but_o from_o the_o familiar_a though_o not_o so_o universal_a quality_n of_o thing_n as_o cold_a heat_n weight_n hardness_n and_o the_o like_a and_o perhaps_o it_o will_v be_v none_o of_o the_o least_o advantage_n which_o will_v accrue_v to_o naturalist_n from_o a_o satisfactory_a explication_n of_o such_o quality_n by_o the_o most_o primitive_a and_o simple_a one_o that_o it_o will_v much_o shorten_v the_o explication_n of_o particular_a phaenomena_n for_o though_o there_o be_v many_o thing_n in_o nature_n that_o may_v be_v ready_o enough_o make_v out_o by_o the_o size_n motion_n &_o figure_n of_o the_o small_a part_n of_o matter_n yet_o there_o be_v many_o more_o that_o can_v be_v well_o explain_v without_o a_o great_a deal_n of_o discourse_n and_o divers_a successive_a deduction_n of_o one_o thing_n from_o another_o if_o the_o purpose_a effect_n must_v be_v deduce_v from_o such_o primary_n and_o universal_a cause_n whereas_o if_o we_o be_v allow_v to_o take_v the_o notion_n of_o cold_a heat_n and_o the_o like_a quality_n for_o grant_v the_o explication_n and_o proof_n may_v be_v much_o more_o compendious_o make_v he_o give_v some_o reason_n why_o stone_n and_o iron_n and_o all_o other_o heavy_a body_n will_v swim_v in_o quicksilver_n except_o gold_n which_o will_v sink_v in_o it_o that_o teach_v that_o all_o those_o other_o body_n be_v in_o specie_fw-la as_o they_o speak_v or_o bulk_n for_o bulk_n light_a than_o quicksilver_n whereas_o gold_n be_v heavy_a he_o i_o say_v may_v be_v allow_v to_o have_v render_v a_o reason_n of_o the_o thing_n propose_v that_o thus_o refer_v the_o phaenomenon_n to_o that_o know_a affection_n of_o almost_o all_o body_n here_o below_o which_o we_o call_v gravity_n though_o he_o do_v not_o deduce_v the_o phaenomenon_n from_o atom_n nor_o give_v we_o the_o cause_n of_o gravity_n as_o indeed_o scarce_o any_o philosopher_n have_v yet_o give_v we_o a_o satisfactory_a account_n of_o it_o so_o if_o it_o be_v demand_v why_o if_o the_o side_n of_o a_o blow_a bladder_n be_v somewhat_o squeeze_v betwixt_o one_o hand_n they_o will_v upon_o the_o removal_n of_o that_o which_o compress_v they_o fly_v out_o again_o and_o restore_v the_o bladder_n to_o its_o former_a figure_n and_o dimension_n it_o be_v not_o say_v nothing_o to_o the_o purpose_n to_o say_v that_o this_o happen_v from_o the_o spring_n of_o those_o aerial_a particle_n wherewith_o the_o bladder_n be_v fill_v though_o he_o that_o say_v this_o be_v not_o perhaps_o able_a to_o declare_v whence_o proceed_v the_o motion_n of_o restitution_n either_o in_o a_o particle_n of_o compress_v air_n or_o any_o other_o bend_v spring_n and_o as_o for_o the_o reason_n of_o thing_n assign_v by_o physician_n they_o must_v be_v most_o of_o they_o despise_v unless_o we_o will_v allow_v of_o such_o explication_n as_o deduce_v not_o thing_n from_o atom_n or_o their_o affection_n but_o only_o either_o from_o secondary_a quality_n or_o from_o the_o more_o particular_a property_n of_o mix_v body_n if_o a_o physician_n be_v ask_v why_o rhubarb_n do_v common_o cure_v looseness_n he_o will_v probable_o tell_v you_o as_o a_o reason_n that_o rhubarb_n be_v available_a in_o such_o disease_n because_o it_o have_v both_o a_o laxative_a virtue_n whereby_o it_o evacuate_v choler_n and_o such_o other_o bad_a humour_n as_o be_v wont_n in_o such_o case_n to_o be_v the_o peccant_a matter_n and_o a_o astringent_a quality_n whereby_o it_o afterward_o arrest_v the_o flux_n but_o if_o you_o further_o ask_v he_o the_o reason_n why_o rhubarb_n purge_v and_o why_o it_o purge_v choler_n more_o than_o any_o other_o humour_n it_o be_v ten_o to_o one_o he_o will_v not_o be_v able_a to_o give_v you_o a_o satisfactory_a answer_n and_o indeed_o not_o only_o the_o manner_n whereby_o purgative_n medicine_n work_v but_o those_o other_o property_n whereby_o some_o body_n be_v diuretic_n other_o sudorific_a other_o sarcotick_a etc._n etc._n be_v not_o i_o fear_v so_o easy_a to_o be_v intelligible_o make_v out_o as_o man_n imagine_v and_o yet_o a_o skilful_a physician_n will_v just_o think_v himself_o wrong_v if_o the_o reason_n he_o render_v of_o thing_n in_o his_o own_o profession_n be_v deny_v the_o name_n of_o reason_n because_o make_v without_o recourse_n to_o atomical_a principle_n and_o indeed_o there_o be_v oftentimes_o so_o many_o subordinate_a cause_n between_o particular_a effect_n and_o the_o most_o general_a cause_n of_o thing_n that_o there_o be_v leave_v a_o large_a field_n wherein_o to_o exercise_v man_n industry_n and_o reason_n if_o they_o will_v but_o solid_o enough_o deduce_v the_o property_n of_o thing_n from_o more_o general_n and_o familiar_a quality_n and_o also_o intermediate_v cause_n if_o i_o may_v so_o call_v they_o from_o one_o another_o and_o i_o be_o the_o more_o backward_o to_o despise_v such_o kind_n of_o reason_n because_o i_o elsewhere_o declare_v that_o there_o be_v some_o for_o i_o do_v not_o say_v many_n thing_n as_o particular_o the_o origine_fw-la of_o local_a motion_n of_o which_o even_o by_o the_o atomical_a doctrine_n no_o physical_a cause_n can_v well_o be_v render_v since_o either_o such_o thing_n must_v be_v ascribe_v to_o god_n who_o be_v indeed_o the_o true_a but_o the_o supernatural_a cause_n of_o they_o or_o else_o it_o must_v be_v say_v as_o it_o be_v by_o the_o old_a epicurean_o that_o they_o do_v ever_o belong_v to_o matter_n which_o consider_v that_o the_o notion_n of_o matter_n may_v be_v complete_a without_o they_o be_v not_o to_o give_v a_o physical_a efficient_a cause_n of_o the_o thing_n in_o question_n but_o in_o effect_n to_o confess_v that_o they_o have_v no_o such_o cause_n but_o of_o this_o elsewhere_o more_o in_o the_o mean_a time_n that_o you_o may_v not_o be_v draw_v away_o to_o undervalue_v such_o writer_n as_o i_o have_v be_v plead_v for_o nor_o think_v you_o aught_o to_o refrain_v from_o write_v what_o occur_v to_o you_o though_o true_a and_o useful_a unless_o you_o deduce_v it_o or_o at_o least_o can_v do_v so_o from_o the_o epicurean_a notion_n i_o shall_v here_o brief_o represent_v to_o you_o what_o perhaps_o you_o will_v not_o hereafter_o think_v a_o despicable_a suggestion_n that_o there_o be_v two_o very_a distinct_a end_v that_o man_n may_v propound_v to_o themselves_o in_o study_v natural_a philosophy_n for_o some_o man_n care_v only_o to_o know_v nature_n other_o desire_v to_o command_v she_o or_o to_o express_v it_o otherwise_o some_o there_o be_v who_o desire_v but_o to_o please_v themselves_o by_o the_o discovery_n of_o the_o cause_n of_o the_o know_a phaenomena_n and_o other_o will_v be_v able_a to_o produce_v new_a one_o and_o bring_v nature_n to_o be_v serviceable_a to_o their_o particular_a end_n whether_o of_o health_n or_o riches_n or_o sensual_a delight_n now_o as_o i_o shall_v not_o deny_v but_o that_o the_o atomical_a the_o cartesian_a or_o some_o such_o principle_n be_v likely_a to_o afford_v the_o most_o of_o satisfaction_n to_o those_o speculative_a wit_n that_o aim_v but_o at_o the_o knowledge_n of_o cause_n so_o i_o think_v that_o the_o other_o sort_n of_o man_n may_v very_o delightful_o &_o successful_o prosecute_v their_o end_n by_o collect_v and_o make_v variety_n of_o experiment_n and_o observation_n since_o thereby_o learn_v the_o quality_n and_o property_n of_o those_o particular_a body_n they_o desire_v to_o make_v use_n of_o and_o observe_v the_o power_n that_o divers_a chemical_a operation_n and_o other_o way_n of_o handle_v matter_n have_v of_o alter_v such_o body_n and_o vary_v their_o effect_n upon_o one_o another_o they_o may_v by_o the_o help_n of_o attention_n and_o industry_n be_v able_a to_o do_v many_o thing_n some_o of_o they_o very_o strange_a and_o more_o of_o they_o very_o useful_a in_o humane_a life_n when_o a_o gunner_n or_o a_o soldier_n employ_v gunpowder_n it_o be_v not_o necessary_a that_o he_o shall_v consider_v or_o so_o much_o as_o
metal_n successive_o in_o that_o hand_n wherein_o a_o man_n hold_v the_o rod_n he_o may_v discover_v what_o determinate_a metal_n be_v predominant_a in_o the_o vein_n for_o when_o he_o put_v into_o his_o hand_n that_o metal_n wherewith_o the_o mine_n chief_o abound_v the_o wand_n will_v manifest_o bow_v more_o strong_o than_o when_o it_o be_v hold_v in_o the_o hand_n with_o any_o other_o metal_n what_o to_o determine_v concern_v the_o truth_n of_o this_o perplex_v experiment_n i_o confess_v i_o know_v not_o for_o agricola_n himself_o after_o a_o long_a debate_n concern_v it_o 28._o give_v we_o this_o account_n of_o his_o sense_n metallicus_fw-la igitur_fw-la say_v he_o quia_fw-la eum_fw-la virum_fw-la bonum_fw-la &_o gravem_fw-la esse_fw-la volumus_fw-la virgulâ_fw-la incantatâ_fw-la non_fw-la utetur_fw-la quiarerum_fw-la naturae_fw-la peritum_fw-la &_o prudentem_fw-la furcatam_fw-la sibi_fw-la usui_fw-la non_fw-la esse_fw-la sed_fw-la ut_fw-la supra_fw-la dixi_fw-la habet_fw-la naturalia_fw-la venarum_fw-la signa_fw-la quae_fw-la observat_fw-la 3._o the_o diligent_a kiroherus_n inform_v we_o in_o his_o arte_fw-la magneticâ_fw-la that_o have_v exact_o try_v the_o experiment_n with_o metal_n for_o he_o mention_n not_o his_o have_v try_v it_o with_o mine_n he_o can_v not_o find_v it_o in_o any_o measure_n succeed_v and_o we_o ourselves_o have_v several_a time_n make_v trial_n of_o it_o in_o the_o presence_n of_o the_o consident_a assertor_n of_o the_o truth_n of_o it_o can_v not_o satisfy_v ourselves_o that_o the_o wand_n do_v real_o stand_v either_o to_o the_o metal_n when_o place_v under_o it_o or_o to_o the_o metalline_a vein_n when_o we_o carry_v it_o over_o mine_n whence_o metalline_a oar_n be_v at_o that_o very_a time_n dig_v out_o but_o on_o the_o other_o side_n diverse_a good_a author_n and_o even_o our_o diligent_a countryman_n gabriel_n plat_v though_o wont_a to_o be_v somewhat_o too_o severe_a to_o chemist_n do_v ascribe_v very_o much_o to_o this_o detect_v wand_n and_o diverse_a person_n in_o other_o thing_n very_o far_o from_o credulous_a have_v as_o eye-witness_n with_o great_a asseveration_n assert_v the_o truth_n of_o the_o experiment_n before_o we_o and_o one_o gentleman_n who_o live_v near_o the_o lead-mine_n in_o somersetshire_n lead_v i_o over_o those_o part_n of_o the_o mine_n where_o we_o know_v that_o metalline_a vein_n do_v run_v make_v i_o take_v notice_n of_o the_o stoop_n of_o the_o wand_n when_o he_o pass_v over_o a_o vein_n of_o oar_n and_o protest_v that_o the_o motion_n of_o his_o hand_n do_v not_o at_o all_o contribute_v to_o the_o inclination_n of_o the_o rod_n but_o that_o sometime_o when_o he_o hold_v it_o very_o fast_o it_o will_v bend_v so_o strong_o as_o to_o break_v in_o his_o hand_n and_o to_o convince_v i_o that_o he_o believe_v himself_o he_o do_v upon_o the_o promise_v make_v he_o by_o his_o stoop_a wand_n put_v himself_o to_o the_o great_a charge_n of_o dig_v in_o untried_a place_n for_o mine_n but_o with_o what_o success_n he_o have_v not_o yet_o inform_v i_o among_o the_o miner_n themselves_o i_o find_v some_o make_a use_n of_o this_o wand_n and_o other_o laugh_v at_o it_o and_o this_o i_o must_v take_v notice_n of_o as_o peculiar_a to_o this_o experiment_n that_o the_o most_o know_a patron_n of_o it_o confess_v that_o in_o some_o man_n hand_n it_o will_v not_o at_o all_o succeed_v some_o hide_a property_n in_o he_o that_o use_v the_o wand_n be_v able_a as_o they_o say_v to_o overpower_v and_o hinder_v its_o inclinatory_a virtue_n to_o which_o i_o must_v add_v what_o a_o very_a famous_a chemist_n who_o affirm_v himself_o to_o have_v try_v many_o other_o thing_n with_o it_o beside_o those_o that_o be_v common_o know_v very_o solemn_o profess_v to_o i_o upon_o his_o own_o knowledge_n namely_o that_o in_o the_o hand_n of_o those_o very_a person_n in_o who_o hand_n the_o rod_n will_v as_o they_o speak_v work_v there_o be_v certain_a unlucky_a hour_n govern_v by_o such_o planet_n and_o constellation_n which_o i_o confess_v i_o believe_v not_o enough_o to_o remember_v their_o name_n during_o which_o it_o will_v not_o work_v even_o in_o those_o hand_n wherein_o at_o other_o time_n it_o manifest_o will_n but_o of_o this_o experiment_n i_o must_v content_v myself_o to_o say_v what_o i_o be_o wont_a to_o do_v when_o my_o opinion_n be_v ask_v of_o those_o thing_n which_o i_o dare_v not_o peremptory_o reject_v and_o yet_o be_o not_o convince_v of_o namely_o that_o they_o that_o have_v see_v they_o can_v much_o more_o reasonable_o believe_v they_o than_o they_o that_o have_v not_o nor_o be_v it_o only_o in_o experiment_n pyrophilus_n but_o in_o observation_n also_o that_o muâ—h_v of_o contingency_n may_v be_v witness_v the_o great_a variety_n in_o the_o number_n magnitude_n position_n figure_n etc._n etc._n of_o the_o part_n take_v notice_n of_o by_o anatomical_a writer_n in_o their_o dissection_n of_o that_o one_o subject_a the_o humane_a body_n about_o which_o many_o error_n will_v have_v be_v deliver_v by_o anatomist_n if_o the_o frequency_n of_o dissection_n have_v not_o enable_v they_o to_o discern_v betwixt_o those_o thing_n that_o be_v general_o and_o uniform_o find_v in_o dissect_a body_n and_o those_o which_o be_v but_o rare_o and_o if_o i_o may_v so_o speak_v through_o some_o wantonness_n or_o other_o deviation_n of_o nature_n to_o be_v meet_v with_o i_o remember_v that_o a_o while_n since_o be_v present_a at_o the_o dissection_n of_o a_o lusty_a young_a thief_n we_o have_v opportunity_n to_o observe_v among_o other_o thing_n that_o the_o interval_n betwixt_o two_o of_o his_o rib_n be_v near_o the_o backbone_n fill_v up_o with_o a_o thick_a bony_a substance_n which_o seem_v to_o be_v but_o a_o expansion_n of_o the_o rib_n and_o appear_v not_o to_o have_v grow_v there_o upon_o occasion_n of_o any_o fracture_n or_o other_o mischance_n about_o the_o same_o time_n be_v at_o a_o private_a dissection_n of_o a_o large_a and_o young_a humane_a body_n with_o some_o learned_a man_n a_o ingenious_a person_n professor_n of_o anatomy_n there_o present_a chance_v to_o cut_v a_o great_a nerve_n spy_v in_o the_o substance_n of_o it_o a_o little_a of_o a_o very_a red_a liquor_n which_o he_o immediate_o show_v i_o as_o wonder_v what_o it_o may_v be_v but_o i_o conclude_v it_o to_o be_v blood_n present_o suspect_v that_o it_o may_v have_v proceed_v from_o some_o small_a unheeded_a drop_n of_o blood_n wipe_v off_o by_o the_o brushy_a substance_n of_o the_o nerve_n from_o the_o knife_n wherewith_o it_o be_v cut_v wherefore_o careful_o wipe_v a_o dissect_n knife_n i_o do_v in_o another_o place_n cut_v the_o nerve_n asunder_o and_o find_v another_o very_a little_a drop_n of_o pure_a blood_n in_o the_o substance_n of_o it_o as_o before_o this_o i_o do_v again_o elsewhere_o with_o like_a success_n show_v it_o to_o the_o bystander_n who_o admire_v to_o see_v a_o vessel_n carry_v blood_n for_o such_o they_o conclude_v it_o to_o be_v in_o the_o body_n of_o a_o nerve_n in_o regard_n they_o remember_v not_o to_o have_v ever_o meet_v with_o such_o a_o accident_n though_o i_o the_o less_o admire_v it_o because_o i_o have_v in_o a_o ox_n eye_n or_o two_o observe_v in_o that_o coat_n which_o the_o modern_n common_o call_v the_o retina_fw-la and_o which_o seem_v to_o be_v but_o a_o expansion_n of_o the_o pith_n of_o the_o optic_a nerve_n little_a turgent_fw-la vein_n manifest_o full_a of_o blood_n we_o further_o observe_v in_o that_o lately-mentioned_a body_n in_o which_o we_o take_v notice_n of_o the_o irregular_a conjunction_n of_o two_o rib_n that_o the_o lung_n which_o be_v very_a sound_n have_v a_o supernumerary_a lobe_n on_o one_o side_n which_o do_v so_o little_o differ_v from_o its_o companion_n that_o we_o do_v not_o till_o we_o have_v display_v the_o lung_n take_v notice_n of_o it_o and_o i_o remember_v that_o a_o while_n before_o be_v invite_v by_o a_o company_n of_o physician_n to_o a_o private_a dissection_n and_o the_o lung_n which_o otherwise_o seem_v not_o unsound_a appear_v in_o divers_a place_n fasten_v to_o the_o rib_n two_o ingenious_a anatomist_n that_o be_v there_o present_a do_v so_o little_o agree_v in_o theiâ—_n observation_n concern_v such_o case_n that_o the_o one_o affirm_v that_o he_o have_v never_o see_v any_o lung_n which_o have_v not_o be_v excessive_o morbid_v tie_v to_o the_o thorax_n and_o the_o other_o protest_v that_o he_o have_v scarce_o ever_o open_v a_o disease_a body_n wherein_o the_o lung_n do_v not_o so_o adhere_v but_o if_o it_o be_v not_o improper_a to_o mind_v a_o young_a gentleman_n of_o venereal_a observation_n i_o can_v easy_o give_v you_o a_o eminent_a proof_n of_o the_o disagreement_n of_o anatomical_a observator_n by_o insist_v on_o the_o controversy_n betwixt_o the_o famous_a writer_n on_o that_o subject_a concern_v the_o anatomical_a note_n or_o token_n of_o virginity_n
many_o eminent_a author_n affirm_v that_o they_o have_v seldom_o fail_v of_o find_v they_o in_o one_o among_o very_o many_o dissect_a maid_n and_o many_o other_o artist_n both_o conspicuous_a and_o experience_a peremptory_o profess_v that_o they_o have_v seldom_o or_o never_o meet_v with_o the_o pretend_a mark_n in_o person_n even_o of_o the_o most_o undoubted_a virginity_n and_o certain_o it_o be_v very_o strange_a that_o about_o a_o matter_n which_o seem_v so_o easy_o determinable_a by_o sense_n accurate_a and_o sober_a man_n shall_v so_o wide_o disagree_v as_o that_o the_o one_o shall_v profess_v he_o have_v very_o rare_o if_o ever_o meet_v with_o in_o a_o humane_a body_n what_o another_o affirm_v himself_o to_o have_v as_o seldom_o if_o ever_o miss_v but_o because_o pyrophilus_n this_o subject_n be_v perhaps_o somewhat_o improper_a to_o be_v insist_v on_o either_o to_o or_o by_o a_o young_a man_n i_o shall_v pass_v on_o to_o tell_v you_o that_o among_o the_o accurate_a of_o our_o modern_a writer_n i_o suppose_v you_o will_v ready_o allow_v i_o to_o reckon_v d._n harvey_n and_o d._n highmore_n and_o that_o that_o though_o in_o their_o excellent_a treatise_n of_o generation_n they_o both_o insist_v on_o the_o production_n and_o change_n observable_a in_o hen_n egg_n as_o the_o pattern_n whereunto_o the_o generation_n of_o other_o animal_n may_v be_v refer_v yet_o have_v we_o diverse_a time_n in_o the_o progress_n of_o nature_n in_o her_o formation_n of_o a_o chick_n observe_v considerable_a variation_n in_o point_n of_o time_n and_o other_o circumstance_n though_o in_o the_o main_a our_o observation_n common_o agree_v from_o what_o be_v by_o they_o deliver_v which_o diversity_n may_v easy_o proceed_v from_o the_o differ_a constitution_n of_o hen_n their_o differ_a assiduity_n in_o sit_v on_o their_o egg_n the_o differ_a qualification_n of_o the_o egg_n themselves_o and_o several_a other_o particular_n of_o like_a nature_n and_o i_o remember_v that_o the_o other_o day_n take_v notice_n of_o this_o to_o my_o learned_a friend_n dr._n highmore_n he_o ready_o acknowledge_v to_o i_o that_o he_o himself_o have_v likewise_o observe_v diverse_a circumstance_n in_o egg_n whilst_o they_o be_v hatch_n which_o vary_v from_o those_o set_v down_o by_o he_o in_o his_o book_n though_o he_o have_v there_o accurate_o express_v the_o change_n he_o discern_v in_o those_o egg_n which_o at_o that_o time_n afford_v he_o his_o observation_n and_o indeed_o there_o be_v certain_a thing_n of_o such_o a_o nature_n that_o scarce_o any_o single_a man_n accurateness_n in_o make_v a_o single_a observation_n about_o they_o can_v secure_v he_o from_o appear_v unskilful_a or_o unfaithful_a in_o his_o observation_n unless_o those_o that_o shall_v afterward_o examine_v they_o chance_n to_o be_v endow_v with_o a_o somewhat_o more_o than_o ordinary_a either_o equity_n or_o sagacity_n or_o both_o for_o instance_n he_o that_o first_o affirm_v that_o a_o needle_n animate_v by_o a_o loadstone_n do_v constant_o convert_v its_o extreme_n to_o the_o opposite_a pole_n of_o the_o earth_n can_v scarce_o suspect_v himself_o of_o have_v deliver_v any_o thing_n which_o he_o have_v not_o careful_o try_v and_o yet_o of_o those_o excellent_a pilot_n gonzales_n oviedo_n and_o sebastian_n cabot_n who_o be_v say_v to_o have_v in_o america_n first_o take_v notice_n of_o the_o declination_n of_o the_o mariner_n needle_n he_o that_o do_v first_o in_o those_o far_o distant_a part_n of_o the_o world_n compare_v the_o meridian_n line_n afford_v by_o magnetical_a needle_n with_o one_o mathematical_o draw_v which_o may_v be_v ready_o find_v by_o accurate_a sun-dial_n and_o thereby_o observe_v the_o variation_n of_o the_o needle_n or_o its_o declination_n from_o the_o true_a meridian_n line_n may_v easy_o conclude_v the_o observer_n former_o mention_v to_o have_v be_v faulty_a by_o reason_n of_o his_o find_v the_o needle_n variation_n differ_v perhaps_o by_o divers_a degree_n from_o that_o deliver_v by_o the_o first_o observer_n and_o this_o second_o man_n observation_n may_v appear_v to_o have_v be_v as_o careless_o make_v to_o a_o hundred_o other_o observer_n if_o the_o observation_n of_o navigator_n have_v not_o make_v it_o apparent_a that_o the_o declination_n of_o the_o needle_n be_v far_o from_o be_v the_o same_o in_o all_o place_n for_o though_o cardan_n as_o kircher_n and_o fracastorius_fw-la as_o another_o inform_v we_o be_v please_v to_o affirm_v 11._o that_o the_o loadstone_n decline_v as_o many_o degree_n as_o the_o pole_n star_n be_v distant_a from_o the_o pole_n of_o the_o world_n yet_o beside_o divers_a reason_n common_a experience_n sufficient_o manifest_v the_o inconsiderableness_n not_o to_o speak_v more_o harsh_o of_o that_o assertion_n for_o about_o the_o island_n of_o the_o azore_n especial_o that_o of_o corvo_n over_o which_o the_o first_o meridian_n be_v by_o many_o suppose_a to_o pass_v the_o magnetic_a needle_n have_v be_v observe_v direct_o to_o respect_v the_o pole_n without_o any_o sensible_a declination_n from_o they_o but_o in_o other_o place_n it_o be_v wont_a to_o vary_v sometime_o eastward_o sometime_o westward_o more_o or_o less_o insomuch_o that_o not_o only_o our_o venturous_a countryman_n captain_n thomas_n james_n observe_v it_o in_o 63_o degree_n north-latitude_n to_o be_v no_o less_o than_o 27_o degree_n voyage_n 48_o minute_n but_o a_o learned_a mathematical_a writer_n that_o be_v late_o come_v forth_o make_v the_o declination_n at_o the_o fretum_n davis_n to_o amount_v to_o what_o be_v almost_o incredible_a 50_o degree_n and_o this_o deflexion_n of_o the_o needle_n sometime_o to_o one_o side_n of_o the_o meridian_n sometime_o to_o the_o other_o happen_v with_o so_o much_o seem_a irregularity_n as_o have_v make_v both_o the_o diligent_a kircher_n himself_o and_o divers_a other_o magnetic_a writer_n almost_o despair_n of_o reduce_v these_o kind_n of_o observation_n to_o any_o general_a hypothesis_n to_o which_o we_o may_v add_v that_o perhaps_o very_a few_o even_n of_o the_o exact_a observation_n of_o this_o nature_n make_v a_o age_n since_o will_v now_o appear_v accurate_a to_o they_o that_o shall_v try_v they_o in_o the_o selfsame_a place_n wherein_o and_o the_o selfsame_a manner_n after_o which_o they_o be_v former_o make_v so_o that_o the_o diligent_a of_o those_o observer_n will_v appear_v to_o we_o to_o have_v be_v negligent_a if_o the_o sagacity_n of_o some_o of_o their_o succeeder_n have_v not_o prompt_v they_o to_o suspect_v that_o even_o in_o the_o same_o place_n the_o needle_n variation_n may_v vary_v and_o i_o remember_v that_o have_v not_o long_o since_o inquire_v of_o a_o english_a contriver_n of_o mathematical_a instrument_n for_o the_o use_n of_o seaman_n what_o he_o have_v observe_v concern_v this_o alteration_n of_o the_o needle_n variation_n he_o tell_v i_o that_o by_o compare_v of_o ancient_a and_o modern_a observation_n make_v by_o himself_o and_o other_o accurate_a mathematician_n at_o london_n he_o have_v find_v the_o declination_n constant_o to_o decrease_v and_o as_o he_o conjecture_v about_o 12_o or_o 13_o minute_n though_o that_o methinks_v be_v much_o in_o a_o year_n and_o it_o will_v be_v yet_o more_o difficult_a to_o set_v down_o any_o observation_n of_o this_o nature_n which_o will_v appear_v exact_a to_o posterity_n if_o that_o strange_a thing_n be_v true_a as_o it_o may_v well_o be_v which_o be_v relate_v to_o kircher_n by_o a_o friend_n of_o he_o who_o affirm_v himself_o to_o have_v observe_v a_o notable_a change_n of_o the_o needle_n variation_n at_o naples_n after_o a_o great_a incendium_fw-la of_o the_o neighbour_a mountain_n vesuvius_n which_o alteration_n he_o not_o absurd_o suspect_v to_o have_v proceed_v from_o the_o very_a great_a change_n make_v in_o the_o neighbour_a subterraneal_a part_n by_o that_o great_a conflagration_n and_o it_o seem_v the_o same_o observation_n have_v be_v take_v notice_n of_o by_o mathematician_n elsewhere_o 10._o for_o the_o learned_a jesuit_n fournier_n in_o his_o french_a hydrography_n tell_v we_o in_o more_o general_a term_n that_o since_o the_o incendium_n of_o vesuvius_n the_o declination_n of_o the_o needle_n have_v notable_o change_v in_o the_o kingdom_n of_o naples_n the_o same_o author_n somewhere_o deliver_v what_o if_o it_o be_v true_a be_v remarkable_a to_o our_o present_a purpose_n in_o these_o word_n there_o be_v person_n who_o have_v observe_v that_o the_o same_o needle_n that_o decline_v 5_o degree_n upon_o the_o surface_n of_o the_o earth_n be_v carry_v down_o very_o low_a into_o certain_a cave_n decline_v quite_o otherwise_o i_o add_v those_o word_n if_o it_o be_v true_a not_o to_o question_v the_o veracity_n of_o the_o author_n but_o because_o it_o be_v very_o possible_a the_o maker_n of_o the_o observation_n though_o learned_a man_n may_v have_v be_v mistake_v in_o it_o without_o suspect_v themselves_o in_o danger_n of_o be_v so_o for_o i_o shall_v scarce_o have_v imagine_v unless_o my_o own_o particular_a
the_o particular_a opinion_n wherein_o the_o atomist_n differ_v from_o other_o modern_a naturalist_n especial_o since_o he_o have_v on_o some_o occasion_n plain_o enough_o intimate_v the_o contrary_a by_o propose_v together_o with_o the_o atomical_a way_n of_o resolve_v a_o thing_n another_o explication_n more_o agreeable_a to_o the_o cartesian_a or_o some_o other_o modern_a hypothesis_n the_o follow_v tract_n be_v entitle_v a_o history_n of_o fluidity_n and_o firmness_n because_o indeed_o the_o have_v set_v down_o experiment_n and_o other_o matter_n of_o fact_n relate_v to_o the_o subject_n treat_v of_o be_v the_o main_n though_o not_o the_o only_a thing_n the_o author_n dare_v pretend_v to_o have_v do_v in_o it_o and_o he_o style_v the_o history_n as_o it_o now_o come_v abroad_o begin_v partly_o because_o he_o will_v invite_v able_a pen_n to_o contribute_v their_o observation_n towards_o the_o complete_n of_o what_o he_o be_v sensible_a he_o have_v but_o begin_v and_o partly_o because_o he_o may_v hereafter_o if_o god_n permit_v do_v something_o of_o that_o kind_n himself_o and_o last_o the_o author_n though_o trouble_v that_o he_o can_v do_v it_o dare_v not_o but_o advertise_v the_o reader_n that_o some_o page_n partly_o a_o little_a after_o the_o beginning_n and_o partly_o about_o the_o middle_n of_o the_o follow_a treatise_n have_v be_v lose_v through_o the_o negligence_n or_o mistake_n of_o he_o to_o who_o care_n the_o sheet_n whereon_o it_o be_v write_v be_v commit_v he_o fear_v he_o have_v not_o be_v able_a otherwise_o than_o very_o lame_o and_o imperfect_o to_o repair_v that_o loss_n out_o of_o his_o memory_n the_o history_n of_o fluidity_n and_o firmness_n the_o first_o part._n of_o fluidity_n sect_n i._o whither_o philosopher_n may_v not_o have_v do_v better_a in_o make_v fluidity_n and_o firmness_n rather_o state_n than_o quality_n of_o body_n we_o will_v not_o now_o examine_v but_o under_o which_o soever_o of_o the_o two_o notion_n we_o look_v upon_o they_o it_o be_v manifest_a enough_o that_o they_o be_v to_o be_v reckon_v among_o the_o most_o general_a affection_n of_o the_o convention_n or_o association_n of_o several_a particle_n of_o matter_n into_o body_n of_o any_o certain_a denomination_n there_o be_v scarce_o any_o distinct_a portion_n of_o matter_n in_o the_o world_n that_o be_v not_o either_o fluid_a or_o else_o stable_a or_o consistent_a and_o therefore_o i_o presume_v it_o may_v be_v well_o worth_a while_n to_o consider_v what_o may_v be_v the_o general_a cause_n of_o these_o two_o state_n quality_n or_o affection_n of_o matter_n and_o to_o try_v whether_o by_o associate_a chemical_a experiment_n to_o philosophical_a notion_n there_o may_v not_o be_v give_v at_o least_o a_o more_o intelligible_a and_o more_o practical_a of_o both_o these_o subject_n than_o have_v be_v hitherto_o afford_v we_o by_o the_o doctrine_n of_o the_o school_n which_o be_v wont_a to_o appear_v very_o unsatisfactory_a to_o discern_a man_n many_o of_o who_o look_v upon_o what_o be_v wont_a to_o be_v teach_v by_o the_o peripatetic_n concern_v fluidity_n and_o firmness_n as_o well_o as_o other_o quality_n to_o be_v partly_o too_o general_a to_o teach_v we_o much_o and_o partly_o too_o obscure_a to_o be_v understand_v and_o that_o which_o at_o present_a invite_v we_o to_o this_o enquiry_n be_v chief_o that_o some_o circumstance_n of_o our_o author_n experiment_n touch_v salt-petre_n may_v afford_v we_o some_o useful_a assistance_n in_o our_o design_a search_n for_o though_o the_o chief_a phaenomena_n and_o circumstance_n of_o the_o experiment_n may_v be_v think_v principal_o to_o respect_v fluidity_n yet_o since_o that_o and_o firmness_n be_v contrary_a quality_n and_o since_o it_o be_v true_o as_o well_o as_o common_o say_v that_o contrary_n survey_v together_o serve_v to_o illustrate_v each_o other_o it_o may_v reasonable_o be_v hope_v that_o the_o light_n which_o the_o circumstance_n just_a now_o relate_v to_o may_v give_v to_o the_o nature_n of_o fluidity_n may_v facilitate_v the_o knowledge_n of_o that_o of_o compactness_n nevertheless_o we_o shall_v often_o be_v oblige_v to_o treat_v of_o these_o two_o quality_n together_o because_o the_o experiment_n we_o be_v to_o produce_v do_v many_o of_o they_o relate_v to_o both_o sect_n ii_o a_o body_n than_o seem_v to_o be_v fluid_a chief_o upon_o this_o account_n that_o it_o consist_v of_o corpuscle_n that_o touch_v one_o another_o in_o some_o part_n only_o of_o their_o surface_n and_o so_o be_v incontiguous_a in_o the_o rest_n and_o separately_z agitate_a to_o and_o fro_o can_v by_o reason_n of_o the_o numerous_a pore_n or_o space_n necessary_o leave_v betwixt_o their_o incontiguous_a part_n easy_o glide_v along_o each_o other_o superficies_n and_o by_o reason_n of_o their_o motion_n diffuse_v themselves_o till_o they_o meet_v with_o some_o hard_a or_o resist_a body_n to_o who_o internal_a surface_n by_o virtue_n of_o that_o motion_n their_o smallness_n and_o either_o their_o gravity_n or_o something_o analogous_a or_o equivalent_a to_o it_o they_o exquisite_o as_o to_o sense_n accommodate_v themselves_o sect_n iii_o what_o notion_n epicurus_n and_o the_o ancient_a atomist_n his_o follower_n have_v of_o fluid_a body_n may_v be_v learn_v from_o these_o verse_n of_o his_o paraphra_v lucretius_n illa_fw-la autem_fw-la debent_fw-la ex_fw-la laevibus_fw-la atque_fw-la rotundis_fw-la esse_fw-la magis_fw-la fluido_fw-la quae_fw-la corpore_fw-la liquida_fw-la constant_a nec_fw-la retinentur_fw-la enim_fw-la inter_fw-la se_fw-la glomeramina_fw-la quaeque_fw-la et_fw-la procursus_fw-la item_n in_o proclive_a volubilis_fw-la extat_fw-la and_o indeed_o it_o be_v probable_a enough_o that_o in_o divers_a liquor_n the_o little_a surface_n of_o the_o component_a particle_n be_v smooth_a and_o slippery_a and_o that_o their_o be_v so_o do_v much_o facilitate_v the_o glide_n of_o the_o corpuscle_n among_o themselves_o and_o consequent_o the_o fluidity_n of_o the_o body_n they_o compose_v nor_o be_v it_o to_o be_v deny_v that_o the_o spherical_a figure_n of_o such_o corpuscle_n may_v also_o conduce_v to_o their_o easy_a roll_v upon_o one_o another_o but_o there_o be_v divers_a other_o figure_n which_o may_v make_v the_o little_a body_n endow_v with_o they_o voluble_a enough_o to_o constitute_v a_o fluid_a substance_n and_o the_o other_o quality_n to_o be_v meet_v with_o in_o divers_a liquid_a substance_n and_o even_o in_o water_n itself_o and_o oil_n seem_v to_o argue_v their_o part_n to_o be_v otherwise_o shape_v and_o those_o fluid_a body_n which_o be_v not_o liquor_n as_o air_n and_o fire_n seem_v to_o be_v compose_v of_o particle_n not_o all_o or_o most_o of_o they_o round_o but_o of_o very_o various_a and_o sometime_o of_o very_o irregular_a figure_n and_o yet_o that_o such_o body_n deserve_v to_o be_v call_v fluid_a one_o will_v be_v manifest_a anon_o and_o that_o they_o make_v a_o much_o more_o considerable_a part_n of_o the_o universe_n than_o those_o that_o be_v wont_a to_o be_v call_v liquor_n may_v be_v argue_v from_o hence_o that_o except_o the_o earth_n the_o planet_n and_o perhaps_o too_o the_o fix_a star_n the_o rest_n of_o the_o world_n as_o vast_a as_o it_o be_v seem_v to_o consist_v chief_o if_o not_o only_o of_o a_o aetherial_a thin_a and_o fluid_a substance_n as_o may_v appear_v to_o omit_v other_o argument_n by_o what_o latter_a astronomer_n have_v observe_v concern_v the_o free_a and_o unresisted_a motion_n of_o such_o comet_n as_o have_v by_o a_o trajection_n through_o the_o aether_n for_o a_o long_a time_n wander_v through_o the_o celestial_a or_o interstellar_a part_n of_o the_o universe_n sect_n iv._o and_o here_o let_v we_o observe_v that_o it_o be_v not_o necessary_a to_o the_o fluidity_n of_o a_o body_n nay_o nor_o to_o its_o appear_a fluid_n to_o the_o eye_n itself_o that_o the_o corpuscle_n it_o consist_v of_o be_v crowd_v as_o close_v together_o as_o they_o be_v wont_n to_o be_v in_o water_n and_o other_o body_n that_o be_v common_o look_v upon_o as_o the_o only_a liquor_n for_o though_o a_o parcel_n of_o matter_n no_o big_a than_o a_o grain_n of_o corn_n be_v rarify_v into_o smoke_n will_v possess_v a_o incomparable_o great_a space_n than_o it_o do_v before_o and_o though_o if_o a_o body_n be_v further_o rarify_v into_o flame_n its_o expansion_n will_v be_v yet_o much_o great_a yet_o both_o smoke_n and_o flame_n may_v be_v so_o order_v as_o to_o appear_v like_o liquor_n we_o have_v practise_v divers_a way_n to_o make_v the_o fume_n of_o body_n acquire_v a_o visibly-level_n superficies_n like_o water_n but_o the_o easy_a though_o not_o perhaps_o the_o best_a be_v this_o part_n of_o which_o i_o remember_v i_o have_v see_v perform_v as_o a_o kind_n of_o trick_n by_o a_o very_a ingenious_a person_n the_o mouth_n be_v fill_v with_o the_o smoke_n of_o rosemary_n that_o happen_v to_o be_v at_o hand_n when_o i_o make_v the_o experiment_n if_o this_o smoke_n be_v plentiful_o blow_v into_o a_o
body_n whereby_o i_o have_v reduce_v sometime_o one_o sometime_o another_o of_o they_o together_o with_o the_o menstruum_fw-la which_o need_v not_o much_o exceed_v they_o in_o bulk_n to_o the_o consistence_n of_o a_o fluid_a body_n we_o see_v likewise_o that_o fusion_n make_v metal_n fluid_a and_o in_o fusion_n there_o be_v manifest_o a_o comminution_n of_o the_o melt_a body_n the_o heat_n alone_o of_o gold_n silver_n or_o iron_n though_o increase_v even_o to_o ignition_n be_v not_o able_a to_o make_v those_o metal_n become_v fluid_a whilst_o they_o continue_v in_o mass_n of_o any_o sensible_a bulk_n to_o which_o i_o shall_v add_v anon_o that_o even_o melt_a metal_n may_v have_v their_o fluidity_n increase_v by_o a_o yet_o further_o comminution_n of_o their_o part_n sect_n vii_o and_o to_o resume_v here_o the_o consideration_n of_o that_o very_a difficult_a question_n which_o we_o have_v elsewhere_o mention_v it_o seem_v well_o worth_a enquiry_n whence_o it_o happen_v that_o in_o the_o distillation_n of_o common_a salt_n and_o other_o saline_a body_n which_o not_o only_o be_v not_o fluid_a but_o be_v hard_o even_o to_o brittleness_n there_o will_v yet_o be_v obtain_v a_o perfect_a and_o permanent_a liquor_n and_o from_o some_o of_o they_o a_o very_a considerable_a proportion_n of_o it_o in_o answer_n to_o this_o question_v it_o may_v indeed_o be_v say_v that_o in_o diverse_a dry_a body_n such_o as_o hartshorn_n wood_n and_o bone_n commit_v to_o distillation_n the_o fire_n do_v no_o more_o than_o separate_v the_o aqueous_a or_o other_o liquid_a part_n from_o the_o other_o wherewith_o they_o be_v blend_v in_o the_o concrete_a and_o bring_v they_o together_o into_o the_o receiver_n where_o they_o convene_v into_o a_o liquor_n but_o beside_o that_o this_o itself_o be_v perhaps_o more_o easy_o say_v than_o prove_v it_o do_v not_o reach_v the_o propound_a difficulty_n for_o with_o what_o probability_n can_v it_o be_v affirm_v of_o body_n that_o have_v be_v already_o calcine_v or_o melt_v such_o as_o be_v the_o red_a calx_fw-la of_o vitriol_n and_o fluxed_a sea_n salt_n etc._n etc._n which_o yet_o afford_v liquor_n though_o their_o aqueous_a and_o other_o loose_a part_n have_v be_v already_o drive_v away_o by_o a_o strong_a fire_n before_o their_o be_v expose_v to_o distillation_n i_o have_v sometime_o then_o consider_v whether_o it_o may_v not_o seem_v less_o improbable_a to_o conjecture_v that_o the_o vehement_a agitation_n produce_v in_o such_o body_n by_o the_o violence_n of_o heat_n do_v both_o divide_v they_o into_o minute_n corpuscle_n and_o drive_v over_o swarm_n of_o they_o into_o the_o cold_a receiver_n where_o lose_v their_o former_a vehemence_n of_o agitation_n they_o be_v reduce_v into_o a_o liquor_n chief_o for_o i_o will_v not_o exclude_v concurrent_a cause_n by_o reason_n that_o the_o fire_n happen_v to_o rend_v the_o concrete_a into_o part_n by_o their_o extreme_a littleness_n or_o their_o shape_n or_o both_o so_o easy_a to_o be_v tumble_v up_o and_o down_o that_o the_o wont_a agitation_n of_o the_o air_n propagate_v by_o the_o interpose_a body_n or_o medium_fw-la or_o else_o that_o the_o same_o cause_n whatever_o it_o be_v that_o give_v the_o air_n its_o wont_a agitation_n be_v able_a to_o give_v such_o minute_n corpuscle_n enough_o of_o it_o to_o keep_v they_o fluid_a sect_n viii_o that_o there_o be_v constant_o in_o the_o air_n a_o various_a motion_n of_o the_o small_a part_n will_v be_v anon_o declare_v that_o also_o some_o body_n will_v be_v keep_v fluid_a by_o a_o much_o less_o measure_n of_o agitation_n than_o be_v requisite_a to_o other_o seem_v probable_a from_o hence_o that_o wine_n will_v continue_v a_o liquor_n in_o such_o a_o languid_a warmth_n of_o the_o air_n as_o will_v not_o keep_v the_o part_n of_o water_n move_v but_o permit_v they_o to_o rest_v in_o the_o form_n of_o ice_n and_o in_o cold_a country_n where_o wine_n itself_o will_v congeal_v as_o i_o have_v by_o art_n make_v it_o do_v here_o in_o england_n it_o be_v observe_v that_o though_o the_o more_o aqueous_a part_n will_v by_o the_o loss_n of_o their_o motion_n be_v turn_v into_o ice_n yet_o the_o more_o subtle_a and_o spirituous_a part_n remain_v unfrozen_a and_o so_o do_v diverse_a other_o liquor_n especial_o chemical_a of_o very_o subtle_a and_o voluble_a part_n and_o the_o corpuscle_n that_o chief_o compose_v that_o body_n which_o be_v proper_o call_v the_o air_n though_o it_o appear_v by_o weather-glass_n that_o cold_a may_v very_o much_o contribute_v to_o condense_a it_o that_o be_v to_o occasion_v the_o approach_n of_o its_o part_n to_o one_o another_o or_o reduce_v they_o to_o a_o close_a order_n have_v not_o be_v observe_v to_o be_v freeze_v by_o any_o degree_n of_o cold_a whatsoever_o which_o seem_v to_o proceed_v from_o hence_o that_o by_o reason_n of_o their_o extreme_a littleness_n not_o exclude_v their_o figure_n there_o can_v be_v so_o little_a of_o agitation_n about_o the_o earth_n as_o not_o to_o be_v sufficient_a â—o_o continue_v a_o various_a motion_n in_o such_o very_a minute_n body_n and_o consequent_o to_o keep_v they_o fluid_a now_o that_o likewise_o it_o be_v possible_a that_o a_o saline_a spirit_n shall_v consist_v at_o least_o in_o great_a part_n of_o very_a minute_n grain_n of_o salt_n we_o elsewhere_o declare_v where_o it_o be_v teach_v that_o a_o salarmoniack_a may_v be_v make_v by_o spirit_n of_o urine_n and_o spirit_n of_o salt_n as_o the_o common_a salarmoniack_a be_v make_v with_o crude_a salt_n and_o there_o a_o way_n be_v also_o show_v how_o these_o two_o salt_n the_o urinous_a and_o the_o other_o as_o strict_o as_o they_o be_v unite_v in_o the_o compound_n may_v be_v ready_o divorce_v and_o agreeable_o to_o this_o i_o observe_v that_o as_o according_a to_o what_o i_o elsewhere_o note_v a_o common_a aqua_fw-la fortis_fw-la may_v be_v enable_v to_o dissolve_v gold_n on_o which_o of_o itself_o it_o will_v not_o fasten_v by_o the_o addition_n of_o spirit_n of_o salt_n so_o i_o find_v that_o common_a crude_a salt_n bare_o dissolve_v in_o it_o will_v give_v it_o the_o like_a power_n of_o work_v upon_o gold_n nay_o i_o have_v try_v that_o crude_a nitre_n dissolve_v in_o good_a spirit_n of_o salt_n may_v make_v it_o serve_v for_o a_o aqua_fw-la regis_fw-la and_o i_o remember_v on_o this_o occasion_n that_o have_v inquire_v of_o the_o most_o note_a person_n in_o holland_n for_o the_o distil_a of_o corrosive_a water_n what_o be_v the_o great_a proportion_n of_o distil_a liquor_n that_o ever_o he_o be_v able_a to_o obtain_v from_o sea_n salt_n he_o though_o a_o man_n not_o give_v so_o much_o as_o to_o boast_n affirm_v to_o i_o that_o by_o use_v instead_o of_o the_o ordinary_a caput_fw-la mortuum_fw-la as_o brick-dust_n sand_n etc._n etc._n that_o chemist_n be_v wont_a to_o mingle_v with_o salt_n before_o they_o distil_v it_o a_o certain_a whitish_a clay_n he_o have_v sometime_o bring_v over_o almost_o the_o whole_a body_n of_o salt_n into_o a_o liquor_n insomuch_o that_o from_o a_o pound_n of_o salt_n he_o can_v draw_v and_o that_o without_o any_o extraordinary_a trouble_n or_o degree_n of_o fire_n fourteen_o ounce_n of_o liquor_n and_o when_o because_o i_o suspect_v that_o much_o of_o this_o may_v be_v water_n force_v from_o the_o clay_n mingle_v with_o the_o salt_n i_o inquire_v whether_o he_o have_v ever_o dephlegm_v this_o liquor_n he_o answer_v i_o that_o he_o have_v purposely_o do_v it_o and_o sometime_o find_v no_o less_o than_o about_o twelve_o ounce_n of_o it_o to_o be_v strong_a rectify_v spirit_n which_o bring_v into_o my_o mind_n that_o almost_o incredible_a passage_n of_o beguinus_n who_o somewhere_o teach_v the_o distillation_n of_o another_o salt_n add_v to_o the_o end_n of_o his_o direction_n that_o if_o you_o have_v wrought_v well_o you_o shall_v get_v from_o a_o pound_n of_o the_o matter_n a_o pound_n of_o spirit_n but_o because_o from_o all_o these_o liquor_n distil_v from_o such_o kind_n of_o salt_n it_o be_v possible_a either_o by_o rectification_n or_o some_o more_o philosophical_a way_n to_o obtain_v a_o portion_n of_o phlegm_n or_o water_n i_o leave_v it_o to_o further_a enquiry_n whether_o or_o no_o the_o fluidity_n of_o these_o distil_a liquor_n may_v not_o in_o diverse_a case_n be_v in_o part_n further_v by_o the_o mixture_n of_o some_o particle_n of_o a_o aqueous_a nature_n such_o be_v fit_a to_o make_v dissolver_n and_o vehicle_n for_o salt_n which_o may_v not_o absurd_o be_v suspect_v to_o have_v be_v produce_v by_o the_o action_n of_o the_o fire_n upon_o the_o concrete_a commit_v to_o distillation_n if_o we_o allow_v with_o that_o famous_a chemist_n helmont_n that_o by_o the_o alchahe_a all_o gross_a body_n may_v be_v total_o and_o that_o without_o it_o even_o oil_n and_o salt_n may_v in_o great_a part_n and_o that_o without_o additament_n be_v reduce_v into_o insipid_a
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
but_o to_o prove_v a_o vacuum_n without_o otherwise_o take_v notice_n that_o i_o have_v meet_v with_o of_o those_o thing_n that_o be_v most_o material_a in_o such_o observation_n to_o our_o present_a purpose_n and_o without_o deduce_v thence_o what_o we_o shall_v endeavour_v to_o do_v in_o order_n to_o the_o explication_n of_o the_o cause_n of_o firmness_n upon_o what_o account_n then_o soever_o the_o atomist_n have_v omit_v to_o reckon_v for_o a_o cause_n of_o firmness_n that_o which_o we_o have_v new_o be_v speak_v of_o yet_o as_o we_o observe_v above_o if_o two_o body_n be_v once_o at_o rest_n against_o one_o another_o it_o seem_v consonant_a to_o the_o catholic_n law_n of_o nature_n that_o they_o shall_v continue_v in_o that_o state_n of_o rest_n till_o some_o force_n capable_a to_o overpower_v their_o resistance_n put_v they_o out_o of_o it_o and_o whatever_o may_v be_v say_v of_o the_o unloosable_a mobility_n of_o atom_n strict_o so_o take_v yet_o that_o diverse_a part_n of_o matter_n may_v compose_v body_n that_o need_v no_o other_o cement_n to_o unite_v they_o than_o the_o juxta-position_n which_o we_o here_o presuppose_v and_o the_o rest_v together_o of_o their_o part_n whereby_o the_o air_n and_o other_o fluid_a body_n that_o may_v dissociate_v they_o be_v exclude_v i_o have_v be_v incline_v to_o think_v by_o what_o i_o have_v observe_v in_o grind_v of_o glass_n for_o sometime_o the_o convex_a surface_n of_o one_o body_n be_v ground_n upon_o the_o concave_a surface_n of_o another_o the_o two_o surface_n will_v happen_v to_o be_v so_o close_o and_o exact_o fit_v to_o one_o another_o their_o immediate_a contact_n in_o all_o their_o part_n or_o at_o least_o in_o innumerable_a of_o they_o hinder_v the_o intercurrence_n of_o the_o air_n that_o a_o man_n be_v not_o able_a without_o break_v one_o or_o both_o of_o they_o to_o pull_v they_o direct_o asunder_o but_o if_o you_o will_v sever_v they_o you_o must_v be_v fain_o to_o make_v one_o of_o they_o to_o slip_v along_o the_o surface_n of_o the_o other_o which_o make_v the_o glass-grinder_n often_o complain_v of_o the_o trouble_n they_o meet_v with_o in_o separate_v such_o body_n nay_o if_o you_o lay_v two_o flat_a glass_n ground_n very_o true_a and_o well_o polish_v upon_o one_o another_o so_o that_o their_o surface_n may_v almost_o every_o where_o touch_v each_o other_o to_o which_o it_o will_v be_v requisite_a to_o rub_v they_o a_o little_a one_o upon_o another_o for_o the_o better_a exclusion_n of_o the_o air_n you_o may_v by_o lift_v up_o the_o uppermost_a lift_v up_o the_o lowermost_a though_o perhaps_o as_o we_o have_v often_o try_v two_o or_o three_o time_n big_a with_o it_o as_o if_o the_o two_o plate_n of_o glass_n make_v but_o one_o body_n nay_o we_o have_v divers_a time_n take_v up_o four_o or_o five_o piece_n of_o glass_n at_o once_o lay_v and_o press_v thus_o one_o upon_o another_o and_o may_v perchance_o have_v take_v up_o a_o great_a number_n if_o we_o have_v have_v more_o of_o they_o at_o hand_n and_o trial_n have_v also_o inform_v we_o that_o if_o you_o hold_v a_o looking-glass_n very_o level_a with_o the_o unfoliate_v side_n downward_o and_o rub_v a_o little_a against_o it_o a_o piece_n of_o other_o very_a flat_a and_o very_a smooth_a glass_n you_o may_v easy_o by_o that_o way_n only_o fasten_v they_o to_o one_o another_o so_o that_o the_o lowermost_a glass_n though_o large_a will_v hang_v between_o the_o uppermost_a and_o the_o ground_n to_o the_o wonder_n of_o those_o that_o behold_v it_o and_o can_v discern_v nor_o imagine_v nothing_o capable_a to_o keep_v it_o from_o fall_v and_o by_o the_o same_o way_n as_o we_o shall_v recite_v anon_o we_o have_v often_o make_v one_o considerable_o thick_a piece_n of_o marble_n take_v and_o hold_v up_o another_o have_v purposely_o cause_v their_o flat_a surface_n to_o be_v careful_o ground_n and_o polish_v without_o which_o the_o experiment_n will_v not_o succeed_v nor_o be_v it_o requisite_a that_o the_o glass_n be_v flat_a to_o make_v they_o adhere_v very_o close_o together_o provide_v their_o immediate_a contact_n be_v make_v according_a to_o a_o large_a surface_n for_o to_o what_o we_o have_v already_o mention_v concern_v the_o cohere_n of_o convex_a and_o concave_a body_n we_o may_v add_v that_o have_v purposely_o apply_v a_o long_a glass-stopple_n of_o a_o almost_o conical_a figure_n and_o well_o ground_n to_o the_o mouth_n of_o a_o thick_a quart_n bottle_n who_o neck_n be_v make_v long_o and_o of_o a_o figure_n convenient_a to_o receive_v the_o stopple_n and_o ground_n within_o fit_a for_o it_o we_o find_v that_o these_o two_o glass_n body_n touch_v one_o another_o in_o a_o multitude_n of_o part_n do_v adhere_v together_o so_o close_o that_o when_o the_o stopple_n be_v careful_o put_v in_o we_o can_v easy_o and_o divers_a time_n one_o after_o another_o lift_v up_o the_o bottle_n though_o there_o be_v by_o our_o guess_n above_o a_o pound_n of_o liquor_n in_o it_o unless_o we_o suppose_v without_o much_o probability_n that_o because_o it_o be_v find_v that_o move_v they_o to_o and_o fro_o upon_o one_o another_o and_o press_v down_o the_o stopple_n promote_v their_o stick_v their_o adhesion_n may_v be_v in_o part_n ascribe_v either_o to_o some_o elastical_a motion_n in_o the_o part_n of_o the_o press_a glass_n or_o to_o the_o exquisite_a adaptation_n of_o the_o almost_o numberless_a though_o very_o small_a asperity_n of_o the_o one_o to_o the_o as_o numerous_a little_a cavity_n of_o the_o other_o whereby_o the_o surface_n do_v lock_v in_o with_o one_o another_o or_o be_v as_o it_o be_v clasp_v together_o for_o as_o polish_a as_o the_o surface_n may_v appear_v to_o sense_n we_o must_v not_o deny_v that_o there_o may_v be_v such_o inequality_n in_o they_o since_o be_v wont_a to_o be_v polish_a with_o putty_n or_o some_o such_o powder_n or_o heap_v of_o grate_a and_o irregular_o shape_a corpuscle_n they_o must_v needs_o make_v store_n of_o little_a furrow_n and_o ridge_n and_o other_o asperity_n on_o they_o but_o to_o insist_v on_o these_o conjecture_n be_v to_o digress_v yet_o here_o we_o must_v not_o decline_v take_v notice_n that_o at_o least_o here_o below_o the_o stick_v together_o of_o such_o body_n as_o be_v of_o sensible_a bulk_n and_o who_o smooth_a surface_v immediate_o touch_v one_o another_o may_v possible_o not_o so_o much_o proceed_v from_o this_o that_o their_o part_n as_o we_o former_o observe_v be_v at_o rest_n among_o themselves_o and_o by_o their_o immediate_a contact_n do_v make_v up_o as_o it_o be_v but_o one_o body_n as_o from_o the_o pressure_n of_o the_o atmosphere_n proceed_v partly_o from_o the_o weight_n of_o the_o ambient_fw-la air_n mix_v with_o the_o effluvium_n of_o the_o terrestrial_a globe_n and_o partly_o from_o a_o kind_n of_o spring_n by_o virtue_n of_o which_o the_o air_n continual_o press_v upon_o the_o body_n contiguous_a to_o it_o though_o through_o accustomance_n &_o negligence_n &_o perhaps_o some_o other_o cause_v not_o here_o to_o be_v insist_v on_o we_o neither_o feel_v it_o in_o our_o own_o body_n nor_o take_v notice_n of_o it_o in_o other_o now_o this_o pressure_n of_o the_o air_n every_o way_n be_v suppose_v i_o think_v the_o adhere_n of_o the_o smooth_a body_n we_o speak_v of_o for_o we_o suppose_v they_o far_o great_a than_o the_o particle_n of_o the_o air_n to_o one_o another_o may_v probable_o enough_o be_v ascribe_v to_o this_o that_o when_o for_o instance_n the_o smooth_a surface_n of_o two_o piece_n of_o glass_n do_v so_o exquisite_o touch_v one_o another_o that_o none_o of_o the_o ambient_fw-la air_n be_v eiâ—her_o intercept_v or_o admit_v between_o they_o than_o the_o undermost_a glass_n will_v suffer_v no_o pressure_n on_o that_o side_n which_o touch_v the_o uppermost_a the_o part_n of_o the_o uppermost_a glass_n have_v no_o sensible_a spring_n in_o they_o so_o that_o they_o can_v only_o resist_v but_o not_o repel_v the_o other_o but_o that_o side_n of_o the_o undermost_a glass_n which_o be_v expose_v to_o the_o air_n will_v be_v press_v upon_o thereby_o and_o there_o be_v as_o we_o say_v no_o elastical_a pressure_n on_o the_o other_o side_n of_o the_o glass_n to_o balance_v this_o it_o be_v not_o to_o be_v wonder_v at_o that_o the_o inferior_a glass_n shall_v not_o fall_v off_o from_o the_o other_o in_o regard_n the_o weight_n that_o will_v carry_v it_o downward_o be_v much_o too_o small_a to_o overcome_v that_o force_n of_o the_o air_n that_o thrust_v it_o against_o the_o uppermost_a glass_n as_o if_o one_o shall_v with_o his_o hand_n thrust_v a_o plate_n of_o iron_n broad-wise_a against_o the_o flat_a ceiling_n of_o his_o chamber_n the_o iron_n will_v not_o fall_v as_o long_o as_o the_o force_n of_o the_o hand_n persevere_fw-la to_o press_v against_o it_o nor_o be_v it_o material_a
that_o in_o our_o case_n the_o pressure_n of_o the_o atmosphere_n be_v suppose_v to_o force_v the_o lowermost_a glass_n upward_o for_o if_o we_o suppose_v the_o air_n to_o consist_v of_o innumerable_a little_a spring_n as_o it_o be_v bear_v upon_o and_o support_v one_o another_o and_o whereof_o the_o lowermost_a be_v bend_v by_o the_o weight_n of_o all_o that_o be_v incumbent_n on_o they_o it_o will_v be_v easy_a to_o conceive_v that_o near_o the_o surface_n of_o the_o earth_n about_o which_o the_o air_n must_v diffuse_v itself_o by_o reason_n of_o the_o gravity_n of_o its_o small_a part_n and_o the_o resistance_n of_o the_o earth_n against_o their_o descent_n it_o may_v press_v almost_o equal_o every_o way_n and_o by_o a_o kind_n of_o recoil_v though_o not_o proper_o so_o call_v from_o the_o terrestrial_a globe_n upward_o may_v strong_o press_v any_o body_n upon_o which_o it_o can_v bear_v against_o any_o other_o which_o have_v no_o such_o elastical_a power_n to_o repel_v from_o it_o a_o body_n so_o press_v against_o it_o this_o difficulty_n be_v thus_o dispatch_v we_o shall_v proceed_v by_o two_o or_o three_o particular_n to_o confirm_v our_o conjecture_n at_o the_o cause_n why_o smooth_a body_n stick_v together_o upon_o bare_a juxta-position_n or_o contact_n and_o firsby_n observe_v that_o if_o a_o piece_n of_o flat_a glass_n be_v as_o we_o former_o mention_v append_v to_o a_o looking-glass_n hold_v with_o the_o unfoliate_v side_n downward_o parallel_n to_o the_o horizon_n though_o the_o adhere_a glass_n will_v not_o drop_v down_o yet_o it_o will_v uâ—ry_v easy_o be_v move_v any_o way_n along_o the_o level_a surface_n and_o if_o by_o incline_v the_o looking-glass_n any_o way_n you_o deprive_v it_o of_o its_o former_a level_n the_o small_a glass_n will_v easy_o slide_v downward_o upon_o the_o surface_n of_o the_o great_a of_o which_o the_o reason_n seem_v to_o be_v partly_o that_o the_o gravity_n as_o such_o of_o the_o low_a glass_n do_v not_o considerable_o resist_v the_o horizontal_a motion_n of_o it_o but_o only_o the_o motion_n upward_o whereby_o it_o must_v recede_v from_o the_o centre_n of_o heavy_a body_n as_o might_n if_o need_n be_v be_v probable_o deduce_v from_o divers_a instance_n obvious_a enough_o and_o partly_o or_o rather_o chief_o that_o to_o the_o edge_n of_o the_o glass_n the_o ambient_fw-la air_n be_v contiguous_a as_o well_o on_o the_o one_o side_n as_o on_o the_o other_o and_o so_o the_o pressure_n of_o the_o air_n be_v equal_a on_o every_o part_n of_o the_o edge_n the_o gravity_n of_o the_o small_a glass_n be_v not_o hinder_v by_o the_o air_n which_o can_v as_o fast_o succeed_v on_o one_o side_n as_o it_o be_v displace_v on_o the_o other_o from_o make_v it_o slide_v down_o the_o shelve_v surface_n of_o the_o great_a glass_n whereas_o of_o the_o broad_a and_o flat_a side_n of_o the_o lowermost_a glass_n the_o one_o be_v as_o we_o say_v press_v by_o the_o spring_n of_o the_o air_n whilst_o the_o other_o suffer_v no_o such_o pressure_n from_o the_o looking-glass_n to_o which_o it_o be_v apply_v and_o so_o if_o you_o take_v a_o small_a open-mouthed_a glass_n and_o plunge_v it_o into_o a_o vessel_n full_a of_o quicksilver_n with_o the_o mouth_n upward_o that_o the_o quicksilver_n may_v fill_v it_o without_o leave_v any_o air_n in_o it_o and_o if_o then_o whilst_o it_o be_v under_o the_o quicksilver_n you_o turn_v the_o mouth_n downward_o and_o so_o keep_v it_o upright_o lift_v it_o up_o till_o the_o mouth_n be_v almost_o come_v to_o the_o top_n of_o the_o mercury_n you_o shall_v perceive_v that_o the_o glass_n will_v remain_v almost_o full_a of_o quicksilver_n in_o the_o vessel_n and_o this_o will_v continue_v so_o though_o you_o incline_v the_o glass_n this_o way_n or_o that_o way_n provide_v you_o keep_v the_o mouth_n of_o it_o within_o the_o mercury_n and_o this_o experiment_n though_o more_o noble_a when_o try_v with_o quicksilver_n will_v succeed_v also_o when_o try_v as_o it_o may_v more_o easy_o be_v with_o water_n of_o which_o the_o reason_n seem_v to_o be_v that_o the_o glass_n hinder_v the_o quicksilver_n in_o it_o from_o the_o pressure_n of_o the_o incumbent_a air_n whereas_o the_o quicksilver_n in_o the_o vessel_n be_v expose_v to_o it_o must_v by_o it_o necessary_o be_v force_v up_o against_o the_o surface_n of_o the_o invert_v bottom_n of_o the_o glass_n where_o it_o meet_v no_o elastical_a power_n to_o repel_v it_o downward_o for_o that_o it_o be_v not_o nature_n abhorrency_n of_o a_o vacuum_n that_o keep_v the_o quicksilver_n from_o descend_v till_o some_o air_n can_v come_v to_o succeed_v in_o its_o room_n the_o famous_a experiment_n invent_v by_o torricellius_n and_o find_v true_a by_o many_o other_o and_o ourselves_o touch_v the_o descent_n of_o quicksilver_n in_o any_o tube_n of_o above_o two_o foot_n and_o a_o half_a long_o seem_v clear_o to_o evince_v and_o to_o confirm_v what_o we_o have_v say_v and_o show_v withal_o that_o it_o be_v not_o so_o much_o the_o contact_n of_o body_n according_a to_o a_o large_a surface_n as_o that_o contact_n be_v consider_v in_o itself_o as_o by_o reason_n of_o its_o be_v ordinary_o requisite_a to_o the_o exclusion_n of_o air_n that_o at_o least_o here_o below_o keep_v body_n from_o fall_v asunder_o i_o shall_v relate_v that_o have_v by_o a_o certain_a artifice_n out_o of_o a_o large_a glass_n with_o a_o narrow_a mouth_n cause_v a_o certain_a quantity_n of_o air_n to_o be_v suck_v we_o find_v that_o by_o immediate_o apply_v a_o book_n which_o then_o chance_v to_o lie_v at_o hand_n to_o the_o orifice_n of_o the_o vessel_n the_o book_n be_v ready_o lift_v up_o and_o sustain_v in_o the_o air_n as_o long_o as_o we_o please_v though_o the_o surface_n of_o the_o suspend_v body_n can_v be_v touch_v as_o be_v evident_a but_o by_o the_o ring_n which_o encircle_v the_o orifice_n of_o the_o vessel_n and_o though_o the_o weight_n take_v up_o beside_o that_o it_o be_v inconvenient_o shape_v for_o such_o a_o trial_n which_o will_v probable_o have_v succeed_v as_o well_o with_o a_o much_o great_a weight_n if_o we_o have_v have_v one_o fit_o shape_v at_o hand_n exceed_v twenty_o ounce_n experiment_n of_o which_o event_n the_o cause_n seem_v plain_o to_o be_v this_o that_o by_o reason_n of_o the_o exsuction_n of_o some_o air_n out_o of_o the_o glass_n the_o elastical_a power_n of_o the_o remain_a air_n be_v very_o much_o debilitate_a in_o comparison_n of_o the_o unweakened_a pressure_n of_o the_o external_n air_n which_o be_v able_a to_o press_v the_o book_n against_o the_o orifice_n of_o the_o vessel_n with_o great_a strength_n than_o the_o internal_a air_n can_v resist_v thereby_o it_o come_v to_o pass_v that_o the_o whole_a orifice_n of_o the_o vessel_n though_o there_o be_v but_o part_n of_o it_o of_o solid_a body_n do_v yet_o on_o this_o occasion_n perform_v in_o some_o measure_n the_o part_n of_o a_o entire_a surface_n exact_o smooth_a it_o may_v be_v consider_v also_o to_o add_v that_o upon_o the_o by_o whether_o upon_o the_o principle_n late_o explicate_v may_v not_o in_o some_o measure_n depend_v the_o solidity_n of_o glass_n for_o though_o its_o part_n seem_v very_o little_a or_o not_o at_o all_o branch_a or_o interweave_v one_o within_o another_o and_o appear_v very_o smooth_a and_o slippery_a yet_o since_o the_o fire_n that_o bring_v they_o to_o fusion_n and_o consequent_o to_o be_v fluid_a may_v well_o be_v suppose_v to_o have_v subdivide_v and_o reduce_v they_o into_o very_o small_a particle_n and_o to_o have_v thereby_o assist_v they_o to_o exclude_v the_o air_n from_o betwixt_o they_o it_o may_v seem_v that_o it_o need_v not_o much_o be_v wonder_v at_o if_o the_o immediate_a contact_n of_o such_o small_a and_o smooth_a corpuscle_n suffice_v to_o make_v they_o hold_v together_o for_o that_o their_o union_n be_v strict_a enough_o to_o keep_v out_o the_o air_n may_v appear_v from_o this_o that_o those_o that_o blow_v glass_n and_o those_o that_o distil_v in_o they_o find_v not_o the_o air_n can_v traverse_v the_o pore_n even_o of_o heat_a glass_n and_o as_o for_o any_o more_o subtle_a matter_n we_o see_v by_o the_o free_a passage_n of_o light_n and_o heat_n or_o to_o speak_v more_o wary_o of_o magnetical_a effluvia_fw-la through_o glass_n without_o injure_v its_o texture_n that_o such_o matter_n but_o moderate_o move_v will_v not_o hinder_v the_o little_a solid_a part_n from_o cleave_v together_o and_o on_o this_o occasion_n it_o may_v be_v consider_v how_o much_o the_o juxta-position_n of_o their_o corpuscle_n crowd_v together_o by_o fusion_n may_v contribute_v to_o the_o consistence_n and_o brittleness_n of_o salt-petre_n and_o diverse_a other_o body_n which_o may_v from_o a_o incoherent_a powder_n be_v ready_o turn_v into_o one_o mass_n as_o also_o how_o far_o the_o stick_v together_o for_o i_o speak_v
will_v employ_v it_o about_o this_o experiment_n in_o a_o silver_n spoon_n without_o leave_v so_o much_o as_o any_o sign_n of_o phlegm_n behind_o but_o it_o will_v in_o the_o open_a air_n almost_o in_o a_o moment_n fly_v away_o from_o the_o surface_n of_o the_o marble_n anoint_v with_o it_o and_o leave_v it_o dry_a and_o glossy_a the_o marble_n be_v skilful_o wet_v and_o keep_v by_o the_o abovementioned_a wire_n from_o slip_v aside_o we_o cast_v into_o a_o scale_n fasten_v to_o the_o low_a of_o they_o diverse_a weight_n at_o several_a time_n and_o by_o nimble_o pull_v up_o the_o high_a stone_n try_v many_o time_n how_o much_o we_o can_v draw_v up_o with_o the_o low_a and_o do_v sometime_o take_v up_o above_o a_o hundred_o ounce_n and_o once_o a_o hundred_o thirty_o two_o ounce_n troy_n beside_o the_o scale_n that_o contain_v they_o and_o the_o marble_n itself_o the_o diameter_n of_o who_o smooth_a surface_n be_v by_o measure_n but_o about_o a_o inch_n and_o two_o three_o but_o here_o i_o must_v take_v notice_n both_o in_o relation_n to_o this_o and_o the_o follow_a experiment_n to_o be_v set_v down_o concern_v smooth_a marble_n that_o we_o never_o yet_o find_v any_o sort_n of_o experiment_n wherein_o such_o slight_a variation_n of_o circumstance_n can_v so_o much_o defeat_v our_o endeavour_n which_o we_o therefore_o mention_v that_o in_o case_n such_o experiment_n be_v try_v again_o it_o may_v be_v think_v the_o less_o strange_a if_o other_o be_v not_o able_a to_o do_v as_o much_o at_o the_o first_o and_o second_o or_o perhaps_o the_o ten_o or_o twenty_o trial_n as_o we_o do_v after_o much_o practice_n have_v make_v we_o expert_a in_o this_o nice_a experiment_n and_o suggest_v to_o we_o divers_a facilitate_v circumstance_n which_o can_v not_o here_o in_o few_o word_n be_v particular_o set_v down_o and_o now_o because_o we_o perceive_v that_o the_o spirit_n of_o wine_n be_v too_o fugitive_a and_o subtle_a a_o liquor_n for_o our_o purpose_n we_o suppose_v that_o oil_n as_o it_o will_v better_o fill_v up_o the_o little_a cavity_n of_o the_o stone_n so_o it_o will_v more_o exact_o keep_v â—ut_v the_o air_n and_o less_o easy_o vanish_v into_o it_o and_o according_o have_v moisten_v the_o surface_n with_o a_o due_a proportion_n of_o good_a express_a oil_n of_o sweet_a almond_n and_o have_v careful_o observe_v the_o other_o requisite_a circumstance_n we_o toâ—k_v up_o some_o dram_n above_o four_o hundred_o ounce_n troy_n hang_v at_o the_o low_a marble_n and_o that_o you_o may_v not_o suspect_v that_o it_o be_v by_o glew_v the_o marble_n together_o that_o the_o oil_n do_v enable_v they_o to_o make_v so_o much_o great_a resistance_n against_o separation_n than_o the_o spirit_n of_o wine_n do_v i_o shall_v add_v that_o in_o case_n the_o flat_a surface_n of_o the_o join_a stone_n be_v hold_v not_o parallel_v but_o perpendicular_a to_o the_o horizon_n that_o so_o the_o air_n may_v as_o we_o former_o also_o observe_v immediate_o succeed_v as_o the_o loose_a marble_n shall_v slide_v off_o the_o weight_n of_o some_o ounce_n be_v now_o and_o then_o requisite_a to_o draw_v down_o the_o marble_n when_o they_o have_v nothing_o but_o spirit_n of_o wine_n between_o they_o whereas_o they_o will_v easy_o enough_o slide_v off_o from_o one_o another_o when_o they_o be_v cement_v together_o with_o oil_n perhaps_o because_o that_o the_o spirit_n of_o wine_n by_o reason_n of_o the_o smallness_n and_o penetrancy_n of_o its_o part_n and_o because_o of_o its_o fugitive_a nature_n do_v not_o so_o well_o fill_v up_o the_o little_a pore_n and_o furrow_n of_o the_o surface_v of_o the_o marble_n whereby_o the_o little_a protuberance_n get_v into_o those_o little_a cavity_n may_v more_o resist_v the_o slide_n of_o the_o marble_n upon_o one_o another_o surface_n who_o texture_n be_v better_a fit_v to_o make_v â—heir_o surface_v smooth_a and_o slippery_a and_o to_o show_v that_o the_o resistance_n of_o such_o contiguous_a marble_n to_o a_o violent_a separation_n be_v great_a in_o those_o which_o being_n broad_a be_v press_v against_o or_o resist_v by_o a_o proportionable_o big_a though_o not_o a_o long_o pillar_n of_o the_o atmosphere_n we_o cause_v two_o marble_n to_o be_v make_v who_o diameter_n be_v three_o inch_n or_o a_o very_a little_a more_o and_o have_v after_o the_o abovementioned_a manner_n employ_v spirit_n of_o wine_n to_o keep_v out_o the_o air_n from_o between_o they_o we_o do_v after_o some_o trial_n with_o the_o uppermost_a of_o they_o take_v up_o the_o lowermost_a and_o with_o it_o four_o hundred_o sixty_o eight_o or_o four_o hundred_o and_o seventy_o ounce_n but_o make_v use_n of_o oil_n of_o almond_n instead_o of_o spirit_n of_o wine_n we_o do_v with_o our_o own_o hand_n draw_v up_o twice_o one_o time_n after_o another_o with_o the_o undermost_a stone_n a_o much_o great_a weight_n namely_o eighty_o four_o pound_n or_o 1344_o ounce_n troy_n weight_n notwithstanding_o which_o weight_n we_o manifest_o perceive_v the_o marble_n at_o which_o it_o hang_v to_o stick_v strong_o to_o the_o other_o and_o here_o again_o we_o will_v take_v notice_n that_o the_o interpose_a oil_n be_v so_o far_o from_o be_v able_a as_o a_o cement_n rather_o than_o by_o keep_v out_o the_o air_n to_o make_v these_o marble_n stick_v so_o close_o together_o that_o whereas_o body_n glue_v or_o cement_v together_o be_v wont_a to_o make_v a_o almost_o equal_a resistance_n to_o their_o be_v separate_v in_o what_o posture_n soever_o you_o place_v they_o i_o make_v our_o marble_n even_o when_o we_o try_v this_o last_o experiment_n very_o free_o slide_v upon_o one_o another_o by_o impel_v the_o upppermost_a to_o the_o right_a hand_n or_o to_o the_o left_a with_o my_o finger_n or_o my_o thumb_n whereof_o the_o reason_n be_v intimate_v above_o where_o we_o mention_v almost_o the_o like_a case_n in_o glass_n and_o have_v sometime_o before_o take_v up_o a_o weight_n which_o we_o conjecture_v to_o be_v not_o much_o inferior_a to_o that_o last_o name_v we_o present_o for_o trial_n sake_n hold_v the_o marble_n with_o their_o edge_n downward_o and_o find_v that_o those_o that_o in_o a_o horizontal_a position_n can_v not_o be_v draw_v asunder_o by_o so_o great_a a_o weight_n do_v in_o another_o posture_n present_o fall_v asunder_o by_o their_o own_o weight_n which_o make_v one_o ready_o slide_v off_o from_o the_o other_o to_o the_o ground_n now_o although_o we_o have_v confess_v that_o this_o way_n of_o measure_v the_o force_n of_o the_o air_n be_v not_o accurate_a yet_o we_o hope_v it_o will_v not_o be_v think_v useless_a since_o not_o to_o mention_v that_o by_o thus_o break_v the_o ice_n we_o may_v make_v way_n for_o the_o happy_a inquiry_n of_o other_o it_o not_o only_o show_v we_o that_o this_o press_v or_o sustain_v force_n of_o the_o air_n as_o unheeded_a as_o it_o be_v wont_a to_o be_v be_v very_o great_a but_o it_o may_v also_o assist_v we_o to_o conjecture_v how_o great_a it_o be_v which_o though_o we_o can_v hereby_o determine_v precise_o and_o with_o certainty_n yet_o we_o may_v estimate_v it_o with_o much_o less_o uncertainty_n than_o otherwise_o we_o can_v i_o know_v that_o the_o peripatetic_n and_o the_o generality_n of_o the_o school_n philosopher_n will_v confident_o ascribe_v the_o stick_n of_o the_o marble_n not_o to_o the_o cause_n we_o have_v assign_v but_o to_o nature_n abhorrency_n and_o fear_n of_o a_o vacuum_n but_o not_o to_o engage_v ourselves_o now_o in_o a_o disquisition_n that_o when_o we_o discourse_v of_o fluidity_n we_o do_v for_o the_o reason_n there_o express_v decline_v to_o meddle_v with_o we_o will_v without_o dispute_v whither_o or_o no_o nature_n either_o can_v at_o all_o admit_v or_o do_v abhor_v a_o vacuum_n content_v ourselves_o to_o confirm_v the_o explication_n give_v of_o this_o phaenomenon_n by_o these_o two_o consideration_n the_o one_o that_o if_o nature_n do_v so_o violent_o oppose_v a_o vacuum_n as_o be_v pretend_v it_o be_v not_o likely_a that_o any_o force_n whatsoever_o that_o we_o can_v employ_v will_v be_v capable_a to_o produce_v one_o whereas_o in_o our_o case_n we_o find_v that_o a_o little_a more_o weight_n add_v to_o the_o low_a of_o the_o marble_n be_v able_a to_o surmount_v their_o reluctancy_n to_o separation_n notwithstanding_o the_o suppose_a danger_n of_o thereby_o introduce_v a_o vacuum_n and_o my_o next_o consideration_n be_v that_o according_a to_o what_o we_o have_v hitherto_o deliver_v without_o have_v recourse_n to_o any_o such_o disputable_a principle_n a_o fair_a account_n may_v be_v give_v of_o the_o propose_a phaenomenon_n by_o the_o pressure_n or_o weight_n of_o the_o air._n and_o that_o what_o we_o have_v say_v concern_v the_o latter_a of_o these_o may_v be_v entertain_v with_o the_o less_o difficulty_n let_v we_o suppose_v that_o when_o the_o marble_n stick_v well_o
thereby_o spoil_v or_o at_o least_o blemish_v the_o experiment_n five_o that_o the_o proportion_n betwixt_o the_o coralline_a solution_n and_o the_o spirit_n of_o wine_n depend_v so_o much_o upon_o the_o strength_n of_o the_o former_a liquor_n and_o the_o dephlegmedness_n of_o the_o latter_a that_o it_o be_v scarce_o possible_a to_o determine_v general_o and_o exact_o what_o quantity_n of_o each_o aught_o to_o be_v take_v and_o therefore_o a_o trial_n or_o two_o make_v with_o a_o little_a of_o the_o particular_a solution_n you_o intend_v to_o employ_v for_o some_o solution_n require_v more_o other_o less_o spirit_n of_o wine_n to_o concoagulate_v adequate_o with_o they_o will_v better_a direct_v you_o what_o proportion_n of_o spirit_n will_v suit_v that_o particular_a parcel_n of_o liquor_n than_o any_o general_a rule_n i_o can_v propose_v i_o know_v i_o may_v here_o and_o perhaps_o it_o may_v be_v expect_v that_o i_o shall_v take_v a_o occasion_n to_o treat_v also_o of_o hardness_n softness_n brittleness_n toughness_n stiffness_n and_o those_o other_o quality_n that_o be_v of_o kin_n to_o fluidity_n and_o firmness_n but_o though_o i_o confess_v i_o once_o have_v thought_n of_o write_v a_o kind_n of_o history_n of_o more_o quality_n than_o those_o yet_o remember_v that_o wise_a counsel_n give_v we_o by_o one_o of_o the_o ancient_n noscenda_fw-la est_fw-la mensura_fw-la svi_fw-la i_o be_o now_o very_a well_o content_a after_o have_v already_o tire_v myself_o and_o i_o fear_v you_o to_o recommend_v so_o useful_a but_o difficult_a a_o work_n to_o person_n more_o able_a and_o more_o at_o leisure_n than_o i_o find_v myself_o to_o go_v through_o with_o so_o great_a a_o undertake_n content_v myself_o at_o present_a to_o have_v attempt_v in_o what_o have_v be_v deliver_v concern_v a_o couple_n quality_n of_o such_o extent_n that_o every_o sensible_o big_a body_n in_o the_o universe_n seem_v endow_v with_o one_o or_o other_o of_o they_o i_o mean_v concern_v fluidity_n and_o firmness_n the_o explicate_a of_o quality_n somewhat_o more_o intelligible_o than_o be_v wont_a to_o be_v do_v in_o the_o peripatetic_a school_n and_o to_o have_v open_v a_o way_n which_o i_o hope_v many_o will_v tread_v of_o apply_v chemical_a observation_n and_o experiment_n to_o the_o deduction_n of_o those_o effect_n of_o quality_n from_o such_o general_a and_o obvious_a affection_n of_o matter_n as_o bigness_n motion_n and_o figure_n which_o even_o the_o hermetical_a writer_n have_v hitherto_o content_v themselves_o to_o refer_v to_o salt_n sulphur_n mercury_n and_o the_o like_a the_o chemical_a notion_n of_o which_o three_o principle_n though_o of_o very_o good_a use_n in_o some_o other_o especial_o of_o the_o more_o practical_a part_n of_o physiology_n seem_v not_o as_o yet_o to_o have_v bring_v any_o great_a light_n to_o such_o matter_n as_o we_o have_v be_v treat_v of_o have_v be_v hitherto_o direct_v not_o so_o much_o to_o the_o indagation_n of_o cause_n as_o to_o the_o production_n of_o effect_n the_o end_n of_o the_o note_n touch_v fluidity_n and_o firmness_n finis_fw-la of_o absolute_a rest_n in_o body_n london_n print_v for_o henry_n herringman_n at_o the_o blue_a anchor_n in_o the_o low_a walk_n of_o the_o new-exchange_n mdclxix_o a_o advertisement_n since_o it_o have_v not_o be_v think_v amiss_o that_o something_o shall_v be_v intimate_v to_o the_o reader_n about_o the_o occasion_n of_o the_o ensue_a tract_n i_o shall_v acquaint_v he_o with_o it_o as_o brief_o as_o i_o can_v by_o tell_v he_o that_o it_o be_v this._n some_o very_a ingenious_a gentleman_n happen_v to_o meet_v as_o visitant_n at_o the_o author_n lodging_n fall_v accidental_o into_o a_o discourse_n about_o the_o absolute_a rest_n suppose_v to_o be_v in_o many_o body_n that_o seem_v to_o have_v its_o rise_n from_o a_o mistake_n of_o the_o true_a meaning_n of_o a_o passage_n or_o two_o in_o the_o history_n of_o fluidity_n and_o firmness_n that_o be_v then_o reprinting_a but_o the_o conference_n chance_v to_o have_v a_o period_n to_o it_o whilst_o several_a thing_n pertinent_a to_o the_o author_n purpose_n remain_v yet_o unsay_v the_o curiousness_n of_o the_o subject_n invite_v he_o to_o draw_v up_o hasty_o enough_o the_o sum_n of_o what_o he_o have_v say_v and_o may_v further_o have_v say_v if_o opportunity_n have_v serve_v about_o the_o point_n in_o debate_n for_o the_o further_a satisfaction_n of_o a_o inquisitive_a virtuoso_fw-la that_o be_v present_a at_o it_o and_o this_o be_v the_o rise_n of_o the_o follow_a discourse_n which_o be_v write_v on_o a_o occasion_n administer_v by_o the_o history_n of_o fluidity_n and_o firmness_n whereof_o a_o new_a edition_n be_v ready_a to_o come_v abroad_o it_o be_v thought_n not_o improper_a that_o this_o tract_n shall_v attend_v it_o as_o a_o kind_n of_o appendix_n without_o the_o first_o and_o last_o part_n of_o a_o letter_n whereof_o the_o body_n only_o be_v necessary_a to_o the_o design_n of_o it_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 where_o the_o absolute_a rest_n of_o body_n be_v call_v in_o question_n sect_n i._o to_o remove_v the_o doubt_n or_o scruple_n that_o begin_v to_o be_v discourse_v of_o just_a before_o we_o last_o part_v i_o shall_v need_v to_o do_v little_o more_o than_o enlarge_v the_o particular_n which_o you_o know_v i_o have_v then_o time_n but_o brief_o to_o make_v mention_n of_o for_o the_o state_n of_o the_o question_n be_v as_o you_o may_v remember_v this_o whether_o there_o be_v among_o body_n any_o absolute_a rest_n on_o which_o occasion_n i_o answer_v that_o rest_v be_v a_o word_n that_o to_o i_o seem_v somewhat_o ambiguous_a i_o think_v it_o be_v requisite_a to_o clear_v the_o sense_n of_o the_o question_n before_o i_o offer_v at_o answer_v it_o for_o the_o word_n rest_v when_o we_o speak_v of_o distinct_a mass_n of_o matter_n look_v upon_o as_o quiescent_n do_v in_o the_o vulgar_a acception_n of_o the_o term_n signify_v such_o a_o state_n of_o a_o visible_a and_o entire_a body_n or_o rather_o of_o the_o corpuscle_n it_o consist_v of_o that_o they_o be_v actual_o vnmoved_a as_o to_o sight_n the_o eye_n and_o perhaps_o not_o the_o touch_n be_v not_o able_a to_o discern_v any_o local_a motion_n in_o they_o consonant_o to_o this_o first_o member_n of_o the_o distinction_n of_o the_o word_n rest_v i_o brief_o intimate_v to_o the_o company_n that_o in_o this_o sense_n of_o a_o corpuscle_n be_v at_o rest_n i_o think_v it_o manifest_v that_o there_o be_v such_o a_o thing_n in_o rerum_fw-la natura_fw-la since_o without_o grant_v such_o a_o rest_n in_o the_o component_a particle_n of_o some_o kind_n of_o body_n as_o diamond_n iron_n porphiry_n etc._n etc._n it_o will_v be_v i_o conceive_v very_o hard_o to_o explain_v how_o there_o can_v be_v such_o solid_a mass_n as_o those_o mineral_n be_v make_v up_o of_o small_a and_o separable_a particle_n which_o be_v say_v i_o add_v that_o i_o see_v no_o reason_n why_o such_o a_o kind_n of_o firmness_n where_o the_o inward_a motion_n of_o the_o insensible_a particle_n be_v almost_o infinite_o slow_a may_v not_o suffice_v to_o give_v a_o account_n of_o as_o great_a a_o firmness_n as_o we_o use_v real_o to_o find_v among_o consistent_a body_n but_o whereas_o i_o have_v intimate_v to_o the_o company_n by_o the_o late_o begin_v distinction_n that_o beside_o this_o popular_a sense_n of_o the_o word_n rest_v there_o be_v a_o second_o more_o rigid_a and_o philosophical_a notion_n or_o kind_n of_o rest_n which_o for_o distinction_n sake_n may_v be_v call_v absolute_a or_o perfect_a rest_n which_o import_v a_o continuance_n of_o a_o body_n in_o the_o same_o place_n precise_o and_o include_v a_o absolute_a negation_n of_o all_o local_a motion_n though_o never_o so_o slow_a or_o imperceptible_a i_o tell_v they_o that_o in_o this_o rigid_a sense_n of_o the_o word_n rest_v i_o dare_v not_o affirm_v that_o there_o be_v any_o body_n at_o rest_n in_o the_o universe_n at_o least_o for_o any_o long_a time_n but_o willing_o allow_v it_o to_o be_v make_v a_o problem_n whether_o there_o be_v any_o or_o no_o add_v that_o perhaps_o i_o incline_v to_o the_o negative_a part_n of_o the_o question_n have_v thus_o historical_o sum_v up_o what_o pass_v betwixt_o we_o about_o the_o state_n of_o the_o controversy_n i_o need_v not_o tell_v you_o that_o the_o doubt_v i_o express_v be_v think_v to_o relish_v too_o much_o of_o a_o paradox_n and_o therefore_o since_o the_o company_n be_v quick_a separation_n allow_v i_o then_o no_o opportunity_n of_o enlarge_n and_o since_o i_o promise_v no_o better_a argument_n than_o may_v be_v expect_v in_o a_o point_n that_o i_o propose_v but_o as_o problematical_a i_o shall_v now_o endeavour_v to_o show_v you_o that_o the_o side_n of_o the_o problem_n i_o be_v judge_v incline_v to_o be_v at_o least_o not_o
i_o a_o difficulty_n which_o though_o unmentioned_a at_o our_o meeting_n may_v afford_v a_o objection_n perhaps_o more_o difficult_a than_o any_o of_o not_o to_o say_v all_o the_o forego_n namely_o that_o it_o be_v scarce_o imaginable_a how_o such_o solid_a and_o hard_a body_n shall_v have_v their_o internal_a part_n wrought_v upon_o by_o such_o slight_a agent_n as_o the_o air_n and_o perhaps_o some_o yet_o minute_a matter_n that_o be_v disperse_v in_o it_o and_o how_o it_o be_v possible_a that_o where_o there_o be_v a_o actual_a motion_n it_o shall_v be_v so_o slow_a that_o a_o corpuscle_n of_o iron_n for_o instance_n seat_v in_o the_o internal_a part_n of_o a_o magnetic_a needle_n shall_v spend_v so_o long_a time_n as_o our_o conjecture_n require_v in_o travel_v so_o little_a a_o space_n as_o from_o thence_o to_o the_o next_o superficies_n of_o the_o needle_n but_o to_o this_o double_a objection_n though_o some_o instance_n which_o you_o will_v meet_v with_o in_o the_o follow_a part_n of_o this_o paper_n may_v be_v proper_o apply_v to_o solve_v it_o yet_o not_o to_o make_v your_o curiosity_n wait_v i_o will_v here_o speak_v a_o word_n or_o two_o to_o each_o of_o the_o member_n of_o the_o objection_n sect_n iv._o and_o to_o the_o first_o i_o say_v that_o these_o intestine_a motion_n of_o the_o corpuscle_n of_o hard_a body_n need_v not_o be_v sole_o nor_o perhaps_o principal_o ascribe_v to_o those_o obvious_a external_a agent_n to_o which_o we_o be_v wont_n to_o refer_v they_o since_o these_o may_v but_o excite_v or_o assist_v the_o more_o principal_a or_o internal_a cause_n of_o the_o motion_n we_o speak_v of_o as_o you_o may_v gather_v from_o what_o be_v but_o late_o mention_v of_o the_o connate_a and_o unlooseable_a mobility_n of_o the_o atom_n according_a to_o epicurus_n and_o the_o permeation_n of_o the_o most_o solid_a body_n by_o the_o cartesian_a materia_fw-la subtilis_fw-la and_o we_o may_v see_v by_o the_o sudden_a effect_n of_o the_o loadstone_n in_o endow_a steel_n wiâ—h_v magnetic_a quality_n and_o deprive_v it_o of_o they_o again_o both_o which_o suppose_v the_o intervention_n of_o a_o change_n of_o texture_n and_o this_o a_o production_n of_o local_a motion_n in_o the_o metal_n that_o very_a minute_n and_o insensible_a corpuscle_n of_o matter_n be_v not_o uncapable_a of_o effect_v durable_a change_n in_o the_o solid_a body_n and_o as_o for_o the_o other_o member_n of_o the_o objection_n i_o confess_v it_o be_v not_o easy_a for_o we_o who_o be_v wont_a perhaps_o too_o much_o to_o follow_v our_o eye_n for_o guide_n in_o judge_v of_o thing_n corporeal_a and_o to_o deny_v existence_n to_o most_o thing_n to_o most_o thing_n whereto_o nature_n have_v deny_v a_o visible_a bulk_n it_o be_v not_o easy_a i_o say_v for_o we_o to_o imagine_v so_o great_a a_o slowness_n as_o it_o be_v very_o possible_a for_o nature_n to_o make_v use_n of_o in_o her_o operation_n though_o our_o not_o be_v able_a to_o discern_v the_o motion_n of_o a_o shadow_n of_o a_o dial-plate_n or_o that_o of_o the_o index_n upon_o a_o clock_n or_o watch_n ought_v to_o make_v we_o sensible_a of_o the_o incompetency_n of_o our_o eye_n to_o discern_v some_o motion_n of_o natural_a body_n which_o reason_n tell_v we_o aught_o to_o be_v incomparable_o slow_a than_o these_o but_o not_o now_o to_o dispute_v about_o the_o existence_n and_o attribute_n of_o infinite_a slowness_n or_o at_o least_o a_o slowness_n in_o the_o next_o possible_a degree_n to_o infinite_a i_o consider_v that_o it_o have_v not_o that_o i_o know_v of_o be_v demonstrate_v nor_o attempt_v to_o be_v so_o that_o the_o motion_n of_o the_o corpuscle_n for_o example_n of_o the_o needle_n above_o mention_v must_v be_v make_v in_o a_o direct_a line_n from_o the_o place_n where_o it_o be_v first_o suppose_v to_o be_v to_o the_o superficies_n of_o the_o needle_n for_o it_o seem_v more_o rational_a and_o to_o agree_v better_o with_o the_o phaenomena_n to_o suppose_v that_o the_o way_n of_o this_o corpuscle_n in_o the_o body_n it_o will_v quit_v be_v extreme_o crooked_a and_o intricate_a almost_o like_o that_o of_o a_o squib_n in_o the_o air_n or_o on_o the_o ground_n for_o it_o be_v on_o the_o one_o hand_n urge_v on_o by_o the_o cause_n whatever_o they_o be_v that_o make_v it_o strive_v to_o fly_v away_o and_o on_o the_o other_o hand_n hinder_v by_o the_o corpuscle_n whereto_o it_o be_v connect_v and_o by_o the_o occursion_n of_o other_o corpuscle_n who_o motion_n may_v be_v opposite_a to_o or_o disagree_v with_o those_o of_o our_o design_v corpuscle_n it_o may_v probable_o before_o it_o can_v extricate_v itself_o be_v reduce_v to_o encounter_v and_o wrestle_v as_o it_o be_v with_o many_o other_o corpuscle_n and_o be_v by_o they_o sometime_o thrust_v or_o impel_v to_o the_o right_a hand_n and_o to_o the_o left_a and_o sometime_o also_o repel_v inward_o even_o after_o it_o be_v come_v to_o the_o superficial_a part_n of_o the_o needle_n whence_o it_o may_v not_o present_o have_v the_o liberty_n to_o fly_v away_o but_o may_v be_v draw_v back_o by_o some_o other_o corpuscle_n wherewith_o it_o be_v yet_o connect_v and_o which_o happen_v to_o be_v itself_o thrust_v inward_a may_v draw_v after_o it_o and_o so_o entangle_v again_o our_o almost_o disband_v corpuscle_n beside_o that_o the_o gravity_n of_o the_o component_a particle_n of_o a_o body_n be_v oftentimes_o such_o that_o it_o be_v easy_a for_o the_o agent_n that_o put_v they_o in_o motion_n to_o continue_v they_o in_o that_o slow_a motion_n among_o themselves_o than_o drive_v they_o up_o into_o so_o light_a a_o medium_n as_o the_o air_n as_o experience_n show_v in_o those_o body_n that_o be_v call_v fix_v as_o gold_n and_o glass_n though_o in_o actual_a fusion_n but_o i_o forget_v that_o i_o promise_v you_o to_o decline_v speculation_n and_o therefore_o i_o shall_v only_o name_v to_o you_o a_o couple_n of_o instance_n which_o will_v serve_v to_o confirm_v both_o what_o i_o be_v late_o say_v and_o what_o i_o be_o now_o in_o prove_v sect_n v._o the_o first_o of_o these_o i_o shall_v take_v from_o what_o be_v usual_o grant_v as_o matter_n of_o fact_n namely_o that_o if_o a_o spring_n though_o make_v of_o so_o hard_a a_o body_n as_o steel_n be_v forcible_o bend_v and_o keep_v but_o a_o moderate_a while_n in_o that_o posture_n as_o soon_o as_o the_o force_n that_o keep_v it_o bend_v be_v remove_v it_o will_v again_o return_v to_o its_o former_a figure_n but_o if_o it_o be_v keep_v too_o long_o in_o that_o force_a position_n it_o will_v by_o degree_n lose_v that_o which_o they_o call_v the_o motion_n of_o restitution_n and_o retain_v its_o new_a crooked_a figure_n though_o the_o force_n that_o bend_v â—t_z be_v remove_v which_o show_v both_o the_o power_n of_o some_o of_o the_o more_o familiar_a agent_n in_o nature_n and_o which_o be_v that_o the_o show_v whereof_o i_o here_o chief_o aim_n at_o that_o where_o there_o be_v a_o continue_a endeavour_n of_o the_o part_n of_o a_o body_n to_o put_v themselves_o into_o another_o state_n yet_o the_o motion_n or_o rather_o the_o progress_n may_v be_v much_o more_o slow_a than_o man_n seem_v as_o yet_o to_o have_v take_v notice_n of_o since_o it_o be_v a_o great_a while_n before_o â—he_n texture_n of_o the_o corpuscle_n of_o the_o steel_n be_v so_o alter_v as_o to_o make_v they_o lose_v their_o former_a springiness_n but_o i_o will_v second_v this_o with_o a_o more_o illustrious_a experiment_n which_o will_v at_o once_o confirm_v what_o i_o have_v just_a now_o say_v and_o show_v that_o the_o air_n or_o the_o invisible_a corpuscle_n harbour_v in_o it_o may_v have_v no_o inconsiderable_a power_n to_o act_v upon_o and_o effect_n change_v in_o the_o solid_a body_n to_o this_o purpose_n i_o shall_v only_o observe_v to_o you_o that_o though_o if_o a_o bar_n of_o iron_n have_v one_o of_o its_o end_n hold_v perpendicular_o and_o at_o a_o fit_a distance_n to_o the_o lily_n or_o north-point_n of_o the_o mariner_n compass_n i_o mean_v that_o which_o point_v towards_o the_o north_n it_o will_v as_o i_o elsewhere_o mention_n drive_v it_o away_o towards_o the_o east_n or_o west_n and_o if_o this_o same_o low_a end_n of_o the_o bar_n of_o iron_n be_v put_v into_o a_o contrary_a posture_n it_o will_v present_o lose_v its_o temporary_a magnetism_n as_o i_o elsewhere_o declare_v yet_o if_o this_o bar_n be_v very_o long_o keep_v upright_o in_o a_o window_n or_o other_o convenient_a place_n then_o as_o some_o late_a magnetical_a writer_n will_v tell_v you_o it_o will_v have_v acquire_v a_o constant_a and_o durable_a magnetic_a power_n which_o be_v a_o phaenomenon_n that_o make_v exceed_o for_o our_o present_a purpose_n since_o it_o hence_o appear_v both_o that_o the_o air_n together_o with_o the_o magnetical_a effluvia_fw-la of_o the_o
earth_n that_o it_o receive_v in_o its_o pore_n be_v able_a without_o outward_a force_n to_o work_v durable_a change_n in_o so_o solid_a a_o body_n as_o iron_n and_o that_o the_o motion_n of_o the_o internal_a part_n for_o these_o be_v requisite_a to_o the_o change_n of_o the_o metal_n be_v texture_n be_v perform_v with_o a_o wonderful_a slowness_n since_o the_o bar_n must_v be_v very_o long_o expose_v to_o the_o air_n perhaps_o before_o it_o acquire_v any_o durable_a magnetism_n at_o all_o but_o at_o least_o before_o it_o acquire_v so_o vigorous_a and_o fix_v a_o magnetism_n as_o by_o this_o mean_v it_o may_v attain_v to_o but_o because_o most_o of_o the_o instance_n to_o be_v propose_v in_o the_o follow_a part_n of_o this_o essay_n may_v serve_v for_o confirmation_n of_o what_o we_o have_v be_v discourse_v i_o shall_v proceed_v to_o they_o yet_o not_o till_o i_o have_v advertise_v you_o that_o i_o purposely_o decline_v to_o mention_v divers_a phaenomena_n that_o may_v even_o by_o learned_a man_n be_v think_v fit_a example_n on_o this_o occasion_n such_o as_o the_o nutrition_n growth_n and_o waste_v of_o animal_n and_o vegetable_n because_o such_o body_n receive_v constant_a supply_n of_o corpuscle_n of_o several_a and_o often_o unknown_a nature_n there_o may_v be_v difficulty_n suggest_v about_o they_o not_o easy_a to_o be_v clear_v without_o long_a discourse_n than_o i_o can_v allow_v this_o essay_n sect_n vi_o the_o first_o instance_n then_o that_o i_o shall_v mention_v about_o vegetable_a substance_n shall_v be_v take_v from_o lignum_fw-la vitæ_fw-la or_o guaiacum_n for_o many_o artificer_n give_v they_o the_o same_o name_n and_o use_v they_o promiscuous_o for_o the_o same_o purpose_n of_o which_o though_o it_o seem_v to_o be_v the_o solid_a wood_n we_o know_v insomuch_o that_o i_o as_o well_o as_o some_o other_o have_v ordinary_o use_v it_o to_o pound_n solid_a body_n in_o yet_o the_o skilful_a tradesman_n i_o have_v meet_v with_o have_v upon_o my_o inquiry_n inform_v i_o that_o if_o it_o be_v wrought_v before_o it_o be_v well_o season_v by_o length_n of_o time_n it_o will_v show_v itself_o very_o frangible_a which_o a_o eminent_a turner_n tell_v i_o he_o have_v often_o find_v to_o his_o loss_n for_o have_v turn_v divers_a fine_a piece_n of_o work_n of_o lignum_fw-la vitæ_fw-la before_o it_o be_v due_o season_v he_o find_v almost_o all_o of_o they_o by_o the_o heat_n of_o the_o sun_n which_o the_o use_n of_o many_o of_o they_o require_v they_o shall_v sometime_o be_v expose_v to_o crack_v and_o cleave_v asunder_o into_o i_o know_v not_o how_o many_o part_n whereby_o those_o fine_a piece_n of_o workmanship_n be_v quite_o spoil_v and_o i_o remember_v that_o have_v inquire_v of_o a_o old_a experience_a tradesman_n of_o who_o i_o buy_v a_o excellent_a mortar_n of_o lignum_fw-la vitæ_fw-la how_o long_o he_o have_v keep_v the_o wood_n in_o season_v before_o i_o have_v the_o mortar_n he_o answer_v i_o if_o i_o much_o mis-rememb_a not_o 20_o year_n under_o which_o time_n it_o be_v not_o full_o season_v for_o some_o purpose_n of_o which_o opinion_n of_o he_o have_v occasional_o speak_v to_o the_o late_o mention_v turner_n this_o experience_a workman_n much_o confirm_v i_o in_o it_o as_o he_o likewise_o do_v in_o a_o observation_n i_o not_o long_o since_o make_v about_o the_o slow_a and_o unperceived_a motion_n that_o may_v be_v not_o only_o in_o the_o more_o loose_a and_o fugitive_n aqueous_a part_n of_o lignum_fw-la vitæ_fw-la but_o in_o far_o more_o unlikely_a one_o for_o he_o tell_v i_o that_o he_o have_v often_o find_v in_o turn_v that_o wood_n cavity_n of_o several_a size_n in_o the_o very_a inward_a and_o solid_a part_n of_o the_o wood_n which_o every_o way_n encompass_v they_o and_o in_o those_o cavity_n considerable_a quantity_n of_o a_o certain_a gum_n much_o cry_v up_o by_o some_o for_o a_o anti-venereal_a medicine_n the_o use_n i_o will_v make_v of_o these_o example_n be_v this_o that_o since_o so_o solid_a a_o body_n as_o a_o trunk_n of_o lignum_fw-la vitæ_fw-la be_v when_o the_o tree_n be_v new_o fell_v may_v require_v so_o long_a a_o time_n as_o 20._o year_n or_o upward_o to_o be_v season_v i.e._n bring_v to_o its_o full_a compactness_n and_o toughness_n and_o 〈…〉_z account_v upon_o which_o time_n season_v wood_n seem_v to_o be_v this_o that_o by_o degree_n the_o loose_a aqueous_a and_o more_o fugitive_a part_n exhale_v into_o the_o air_n whereby_o the_o remain_a solid_a one_o be_v bring_v into_o a_o close_a order_n and_o have_v leisure_n to_o be_v so_o place_v among_o themselves_o as_o be_v most_o convenient_a to_o make_v their_o texture_n firm_a and_o durable_a it_o will_v follow_v that_o even_o in_o the_o internal_a part_n of_o this_o solid_a wood_n there_o must_v be_v not_o only_o in_o the_o loose_a and_o light_a corpuscle_n that_o extricate_v themselves_o and_o exhale_v away_o a_o true_a local_a motion_n though_o much_o too_o slow_a to_o fall_v immediate_o under_o the_o discernment_n of_o our_o sense_n and_o if_o the_o late_o mention_v gum_n be_v either_o total_o or_o so_o much_o as_o in_o part_n generate_v as_o to_o sense_n after_o the_o fell_n of_o the_o tree_n as_o some_o analogous_n instance_n that_o i_o have_v elsewhere_o take_v notice_n of_o make_v it_o probable_a then_o the_o example_n will_v further_o be_v considerable_a to_o our_o present_a purpose_n by_o show_v that_o a_o substance_n so_o gross_a and_o so_o little_a volatile_a in_o comparison_n of_o the_o aqueous_a part_n as_o be_v the_o brittle_a gum_n i_o speak_v of_o may_v permeate_n to_o a_o great_a thickness_n a_o very_a solid_a and_o inanimate_a substance_n which_o can_v be_v do_v without_o a_o intestine_a though_o insensible_a motion_n among_o the_o part_n of_o the_o wood_n and_o probable_o asleep_o marvellous_o slow_a motion_n of_o those_o of_o the_o gum._n sect_n vii_o but_o it_o will_v possible_o seem_v more_o strange_a that_o very_o thin_a piece_n of_o wood_n and_o those_o saw_v off_o from_o a_o tree_n of_o a_o much_o loose_a texture_n shall_v be_v much_o long_o in_o season_v than_o that_o solid_a and_o ponderous_a wood_n we_o have_v be_v speak_v of_o and_o indeed_o this_o discovery_n be_v not_o to_o be_v make_v as_o in_o lignum_fw-la vitæ_fw-la by_o the_o brittleness_n or_o other_o obvious_a quality_n in_o the_o wood_n but_o by_o a_o subtle_a way_n and_o according_o have_v purposely_o consult_v with_o the_o maker_n of_o musical_a instrument_n and_o with_o some_o ancient_a musician_n i_o be_v much_o confirm_v by_o they_o in_o my_o opinion_n and_o i_o remember_v the_o last_o maker_n of_o viol_n lute_n etc._n etc._n of_o who_o i_o inquire_v of_o what_o age_n he_o think_v such_o instrument_n especial_o luâ—es_n aught_o to_o be_v to_o attain_v their_o full_a and_o best_a season_v for_o sonorousness_n he_o reply_v that_o in_o some_o of_o they_o 20_o year_n will_v be_v requisite_a in_o other_o 40_o according_a to_o the_o nature_n and_o thickness_n of_o the_o wood_n and_o other_o circumstance_n but_o a_o ancient_a musician_n that_o be_v present_a at_o what_o be_v say_v inform_v i_o that_o there_o be_v some_o famous_a lute_n one_o or_o two_o of_o which_o he_o name_v to_o i_o that_o attain_v not_o their_o full_a season_n and_o best_a resonance_n till_o they_o be_v about_o fourscore_o year_n old_a and_o thus_o much_o for_o inanimate_a vegetable_a substance_n sect_n viii_o as_o for_o calcine_v stone_n make_v up_o into_o lime_n and_o sort_n of_o raw_a stone_n i_o have_v already_o observe_v from_o the_o credible_a relation_n of_o mason_n and_o other_o that_o the_o wall_n in_o some_o building_n attain_v not_o their_o hardness_n and_o solidity_n till_o they_o be_v 40_o year_n old_a or_o perhaps_o much_o ancient_a and_o since_o in_o gradual_o proceed_v to_o this_o degree_n of_o solidity_n these_o wall_n resemble_v the_o season_n of_o lignum_fw-la vitæ_fw-la formerly_z explicate_v the_o motion_n of_o the_o internal_a part_n may_v be_v argue_v from_o the_o change_n of_o texture_n as_o well_o in_o these_o as_o in_o that_o and_o if_o i_o will_v rob_v other_o tract_n to_o which_o they_o more_o proper_o belong_v i_o can_v here_o easy_o add_v some_o such_o instance_n of_o the_o harden_v and_o soften_a of_o stone_n by_o time_n as_o will_v much_o confirm_v what_o i_o have_v now_o be_v deliver_v but_o i_o shall_v rather_o choose_v to_o confine_v myself_o here_o to_o the_o two_o example_n follow_v not_o take_v notice_n of_o in_o quarrys_n or_o by_o mason_n the_o first_o be_v that_o there_o be_v marchasite_n consist_v as_o well_o of_o a_o stony_a as_o of_o a_o metalline_a substance_n which_o though_o hard_a than_o many_o other_o sort_n of_o stone_n and_o even_o than_o marble_n have_v yet_o so_o great_a a_o motion_n in_o their_o internal_a part_n that_o if_o they_o be_v expose_v to_o the_o air_n not_o