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arrive_v to_o the_o further_a end_n of_o the_o nail_n and_o be_v fit_a to_o be_v pare_v off_o with_o it_o but_o this_o only_a upon_o the_o by_o it_o be_v more_o to_o our_o purpose_n to_o take_v notice_n that_o though_o the_o menstruum_n employ_v in_o the_o recite_v experiment_n be_v of_o themselves_o very_o acid_a and_o corrosive_a yet_o they_o be_v so_o change_v by_o the_o metal_n they_o have_v dissolve_v that_o they_o be_v acid_n no_o more_o the_o solution_n of_o silver_n be_v rather_o extreme_o bitter_a and_o that_o of_o gold_n of_o a_o kind_n of_o stiptic_a taste_n almost_o like_o that_o which_o sloe_n grow_v in_o the_o hedge_n be_v wont_a to_o be_v of_o ivory_n be_v a_o thing_n too_o well_o know_v to_o need_v to_o be_v describe_v and_o since_o it_o be_v general_o look_v upon_o for_o i_o have_v have_v no_o opportunity_n to_o compare_v it_o with_o the_o bone_n as_o the_o solid_a part_n of_o the_o vast_a of_o terestrial_a animal_n experiment_n prove_v its_o porosity_n will_v be_v 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substance_n of_o it_o which_o channel_n receive_v not_o only_o a_o large_a nerve_n but_o a_o vein_n &_o artery_n to_o bring_v in_o &_o carry_v back_o blood_n for_o the_o nourishment_n of_o the_o tooth_n by_o distinct_a sprig_n send_v from_o the_o great_a branch_n to_o the_o particular_a tooth_n not_o to_o urge_v this_o i_o say_v which_o i_o mention_v but_o to_o show_v that_o the_o opinion_n late_o propose_v be_v agreeable_a to_o a_o know_a practice_n of_o nature_n i_o have_v be_v assure_v by_o eminent_a anatomist_n who_o i_o purposely_o consult_v that_o they_o have_v observe_v blood-vessel_n to_o enter_v a_o great_a way_n into_o the_o substance_n of_o the_o large_a bone_n and_o one_o of_o they_o affirm_v that_o he_o have_v trace_v a_o vessel_n even_o to_o the_o great_a cavity_n of_o the_o bone_n which_o i_o the_o less_o scruple_v to_o admit_v because_o it_o have_v be_v observe_v that_o in_o young_a animal_n the_o cavity_n be_v in_o great_a part_n furnish_v with_o blood_n as_o well_o as_o marrow_n and_o in_o those_o large_a pore_n whereof_o many_o be_v find_v in_o the_o more_o spongy_a substance_n of_o divers_a bone_n blood_n have_v be_v observe_v to_o have_v be_v lodge_v as_o also_o in_o the_o spungy_a part_n of_o the_o skull_n that_o lie_v between_o the_o two_o table_n as_o i_o have_v be_v assure_v by_o skilful_a eye-witness_n the_o blackness_n also_o that_o bone_n acquire_v when_o put_v into_o a_o competent_a heat_n and_o a_o peculiar_a kind_n of_o fatness_n which_o they_o may_v by_o heat_n be_v make_v to_o afford_v show_v that_o they_o harbour_v even_o in_o their_o internal_a part_n store_n of_o unctuous_a particle_n separable_a from_o the_o solid_a substance_n which_o still_o retain_v its_o shape_n and_o continue_v solid_a in_o who_o pore_n they_o may_v thereby_o be_v argue_v to_o have_v be_v lodge_v the_o lightness_n of_o bone_n even_o when_o their_o cavity_n be_v accessible_a to_o air_n and_o water_n be_v also_o a_o great_a sign_n of_o their_o porosity_n and_o so_o be_v their_o be_v corrode_v by_o ting_a liquor_n if_o they_o be_v penetrative_a and_o well_o apply_v i_o know_v not_o whether_o i_o shall_v add_v on_o this_o occasion_n that_o have_v take_v calcine_v and_o pulverise_v bone_n such_o as_o we_o use_v to_o make_v our_o cupel_n of_o and_o after_o have_v give_v they_o a_o good_a heat_n keep_v they_o for_o some_o time_n in_o the_o air_n but_o in_o a_o well_o cover_v place_n i_o find_v the_o imbibed_a moisture_n of_o the_o air_n to_o have_v manifest_o increase_v their_o weight_n and_o that_o i_o also_o observe_v in_o a_o curious_a skeleton_n where_o the_o bone_n be_v keep_v together_o by_o wire_n instead_o of_o other_o ligament_n that_o though_o i_o keep_v it_o in_o a_o well_o cover_v place_n not_o far_o from_o a_o kitchen_n fire_n yet_o in_o very_o moist_a weather_n the_o bone_n seem_v to_o swell_v since_o those_o joint_n that_o be_v easy_a to_o be_v bend_v in_o dry_a weather_n and_o that_o after_o several_a manner_n will_v grow_v stiff_a and_o refractory_a and_o indispose_v to_o be_v put_v into_o such_o motion_n when_o the_o weather_n be_v considerable_o wet_a these_o particular_n as_o i_o be_v say_v i_o be_o somewhat_o doubtful_a whether_o i_o shall_v here_o insert_v because_o one_o may_v suspect_v the_o phaenomena_n may_v proceed_v rather_o from_o somewhat_o else_o than_o the_o imbibed_a moisture_n of_o the_o air_n and_o yet_o i_o will_v not_o omit_v to_o mention_v these_o observation_n because_o i_o do_v not_o yet_o see_v any_o cause_n to_o which_o they_o may_v more_o probable_o or_o indeed_o so_o probable_o be_v assign_v and_o on_o this_o occasion_n i_o shall_v subjoin_v some_o observation_n make_v on_o large_a and_o solid_a ox_n bones_o which_o in_o one_o of_o my_o note_n book_n i_o find_v thus_o register_v nou._n 15._o we_o weigh_v two_o entire_a or_o unbroken_a marrow_n bones_o and_o find_v the_o one_o to_o weigh_v â„¥_o xxix_o +_o Ê’ss_o and_o the_o other_o â„¥_o xxiv_o +_o Ê’iv_fw-mi +_o 30_o gr_n nou._n 24._o the_o former_a weigh_v â„¥_o xxix_o +_o Ê’vi_fw-it and_o the_o latter_a â„¥_o twenty-five_o +_o Ê’i_fw-it +_o 30_o gr_n decemb._n 28._o the_o former_a weigh_v â„¥_o xxix_o +_o Ê’iij_fw-la 55_o gr_n and_o the_o latter_a â„¥_o xxiv_o +_o Ê’vii_fw-la +_o 39_o gr_n june_n seven_o of_o the_o follow_a year_n the_o former_a weigh_v â„¥_o xxix_o +_o Ê’ii_fw-la and_o the_o latter_a â„¥_o xxiv_o +_o Ê’vii_fw-la by_o which_o observation_n purposely_o make_v at_o differ_v time_n of_o the_o year_n and_o in_o very_o good_a scale_n it_o seem_v that_o bone_n do_v plentiful_o enough_o imbibe_n the_o exhalation_n of_o the_o air_n and_o emit_v they_o again_o together_o with_o some_o of_o their_o own_o according_a as_o the_o ambient_fw-la happen_v to_o be_v dispose_v and_o these_o alteration_n argue_v the_o bone_n to_o abound_v with_o
though_o strong_a and_o subtle_a nor_o by_o the_o direct_o visible_a or_o odorable_a expiration_n of_o body_n though_o absolute_o speak_v it_o be_v pervious_a to_o some_o corporeal_a substance_n this_o proposition_n consist_v of_o two_o part_n we_o shall_v allow_v each_o of_o they_o its_o distinct_a proof_n and_o as_o for_o the_o first_o part_n it_o be_v manifest_o agreeable_a to_o the_o common_a experience_n of_o chemist_n who_o daily_o find_v that_o in_o well_o stop_v vial_n or_o at_o least_o in_o hermetical_o seal_v glass_n they_o can_v preserve_v their_o subtle_a and_o most_o pierce_a menstruum_n as_o spirit_n of_o nitre_n aqua_fw-la fortis_fw-la spirit_n of_o salt_n spirit_n of_o vinegar_n and_o oil_n of_o vitriol_n and_o this_o they_o find_v to_o be_v true_a not_o only_o as_o to_o acid_n and_o corrosive_a liquor_n like_o those_o i_o have_v new_o name_v but_o also_o in_o those_o spirit_n that_o abound_v with_o fugitive_n salt_n as_o the_o spirit_n of_o urine_n of_o blood_n and_o 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which_o be_v of_o that_o fine_a sort_n that_o be_v call_v essence_n vial_n these_o and_o some_o other_o trial_n have_v i_o confess_v make_v i_o very_o diffident_a of_o the_o experiment_n that_o have_v be_v deliver_v by_o some_o man_n of_o note_n and_o build_v upon_o by_o other_o of_o the_o permeableness_n of_o ordinary_a glass_n vessel_n to_o chemical_a liquor_n as_o that_o mercury_n and_o aqua_fw-la fortis_fw-la be_v digest_v together_o in_o a_o bolt-head_n may_v by_o rub_v the_o outside_n of_o the_o glass_n be_v make_v visible_o and_o palpable_o to_o transudate_v which_o experiment_n if_o my_o memory_n do_v not_o much_o deceive_v i_o i_o purposely_o try_v with_o care_n but_o without_o success_n but_o after_o all_o this_o i_o must_v desire_v that_o it_o may_v be_v remember_v that_o in_o word_v the_o proposition_n of_o the_o imperviousness_n of_o glass_n i_o intimate_v that_o i_o will_v have_v it_o understand_v of_o what_o ordinary_o happen_v for_o in_o some_o extraordinary_a case_n which_o i_o take_v to_o be_v exceed_o rare_a i_o do_v not_o absolute_o deny_v but_o that_o the_o general_n rule_n may_v admit_v of_o exception_n and_o if_o it_o be_v lawful_a to_o conjecture_v these_o exception_n be_v likely_a to_o take_v place_n when_o the_o peculiar_a texture_n of_o this_o or_o that_o glass_n be_v more_o slight_a or_o lax_n than_o ordinary_a or_o when_o the_o body_n that_o be_v to_o pervade_v it_o be_v vehement_o agitate_a by_o heat_n or_o when_o beside_o a_o great_a subtlety_n and_o perhaps_o degree_n of_o heat_n too_o their_o particle_n chance_v to_o have_v a_o special_a congruity_n to_o the_o relaxed_a pore_n of_o that_o particular_a glass_n they_o be_v to_o pass_v through_o i_o remember_v i_o have_v see_v not_o without_o some_o wonder_n a_o sort_n of_o glass_n of_o so_o soft_a and_o resoluble_a a_o texture_n that_o vessel_n of_o it_o of_o a_o competent_a thickness_n will_v be_v manifest_o prejudice_v and_o wrought_v upon_o by_o liquor_n that_o be_v not_o considerable_o sharp_a or_o corrosive_n if_o they_o be_v put_v in_o very_o hot_a i_o have_v also_o hear_v of_o another_o sort_n of_o glass_n make_v in_o a_o certain_a forest_n complain_v of_o by_o a_o destiller_n as_o subject_a to_o be_v sometime_o injure_v by_o corrosive_a liquor_n i_o once_o know_v a_o doctor_n of_o physic_n that_o by_o divers_a credulous_a alchemist_n be_v suspect_v to_o have_v what_o they_o call_v the_o philosopher_n stone_n because_o of_o a_o certain_a book_n ingenious_a enough_o that_o he_o be_v suppose_v to_o have_v write_v on_o that_o subject_n but_o when_o after_o some_o acquaintance_n i_o happen_v to_o debate_v his_o principle_n free_o with_o he_o he_o confess_v to_o i_o that_o he_o have_v be_v mistake_v and_o to_o invite_v i_o to_o give_v he_o my_o thought_n upon_o such_o like_a work_n he_o frank_o make_v i_o a_o ingenuous_a relation_n of_o his_o proceed_n wherein_o the_o main_a thing_n that_o dazzle_v he_o and_o keep_v he_o from_o see_v his_o error_n be_v 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