be_v found_v and_o this_o be_v build_v upon_o the_o weight_n of_o â—ome_o gem_n which_o be_v great_a than_o â—hat_n which_o seem_v to_o belong_v to_o they_o â—s_v hard_a and_o transparent_a stone_n i_o think_v â—e_n may_v probable_o derive_v it_o from_o metalline_n or_o mineral_n mixture_n i_o question_v not_o but_o as_o you_o will_v think_v this_o allegation_n new_a so_o you_o will_v be_v apt_a to_o question_v how_o i_o come_v to_o know_v the_o truth_n of_o what_o i_o here_o deliver_v since_o though_o gem_n be_v wont_a to_o be_v estimate_v by_o lapidary_n as_o they_o weigh_v such_o or_o such_o a_o number_n of_o carrat_n or_o of_o grain_n yet_o they_o compare_v only_o the_o weight_n of_o this_o and_o that_o stone_n of_o the_o same_o kind_n in_o reference_n to_o one_o another_o as_o the_o great_a or_o lesser_a weight_n argue_v the_o great_a or_o lesser_a bulk_n without_o look_v after_o or_o know_v how_o to_o discover_v the_o specific_a gravity_n of_o several_a gem_n which_o depend_v not_o on_o the_o great_a or_o lesser_a bulk_n as_o if_o you_o know_v it_o not_o already_o you_o will_v gather_v from_o what_o i_o be_o now_o go_v to_o relate_v consider_v then_o with_o myself_o that_o for_o my_o purpose_n it_o be_v requisite_a to_o have_v a_o gem_n as_o free_a as_o i_o can_v get_v from_o the_o metalline_a mixture_n that_o i_o suspect_v many_o precious_a stone_n to_o have_v and_o remember_v that_o rock-cristal_n as_o it_o be_v by_o mineralist_n reckon_v among_o gem_n so_o it_o be_v hard_a enough_o as_o i_o try_v both_o to_o cut_v glass_n and_o to_o strike_v fire_n and_o that_o its_o have_v so_o great_a a_o transparency_n and_o its_o be_v devoid_a of_o colour_n make_v it_o exceed_o likely_a to_o be_v free_a from_o adventitious_a mixture_n i_o pitch_v upon_o it_o as_o the_o standard_n whereby_o to_o make_v a_o probable_a estimate_n of_o the_o weight_n of_o gem_n and_o have_v hydrostatical_o and_o with_o a_o tender_a balance_n examine_v the_o weight_n of_o it_o first_o in_o the_o air_n and_o then_o in_o water_n i_o find_v its_o weight_n to_o be_v to_o that_o of_o water_n of_o equal_a bulk_n as_o two_o and_o almost_o two_o three_o to_o one_o which_o by_o the_o way_n show_v we_o how_o groundless_o many_o learned_a man_n as_o well_o ancient_a as_o modern_a make_v crystal_n to_o be_v but_o ice_n extraordinary_o harden_v by_o a_o long_a and_o vehement_a cold_a whereas_o ice_n be_v bulk_n for_o bulk_n light_a than_o water_n and_o therefore_o swim_v upon_o it_o and_o to_o add_v that_o objection_n against_o the_o vulgar_a error_n madagascar_n and_o other_o country_n in_o the_o torrid_a zone_n abound_v with_o crystal_n have_v thus_o find_v the_o ponderousness_n of_o crystal_n in_o reference_n to_o water_n when_o i_o meet_v with_o a_o colour_a gem_n who_o specific_a gravity_n i_o guess_v to_o be_v sensible_o great_a i_o sometime_o give_v myself_o the_o trouble_n for_o a_o trouble_n it_o be_v to_o weigh_v they_o in_o the_o air_n and_o in_o the_o water_n and_o so_o discover_v whether_o i_o conjecture_v aright_o and_o if_o its_o specific_a gravity_n do_v much_o exceed_v that_o of_o crystal_n i_o think_v it_o a_o probable_a argument_n that_o there_o may_v be_v some_o metalline_a or_o mineral_n corpuscle_n mingle_v with_o the_o stony_a one_o of_o the_o gem_n and_o that_o also_o it_o may_v probable_o derive_v its_o tincture_n thence_o i_o will_v not_o tell_v you_o that_o i_o then_o find_v many_o sort_n of_o transparent_a stone_n much_o heavy_a than_o crystal_n for_o beside_o that_o the_o trial_n be_v troublesome_a enough_o to_o make_v i_o chance_v to_o fall_v upon_o they_o in_o a_o place_n where_o i_o have_v not_o any_o store_n and_o variety_n of_o gem_n to_o examine_v but_o one_o instance_n among_o those_o that_o occur_v to_o i_o i_o shall_v here_o set_v down_o because_o be_v so_o notable_a it_o may_v suffice_v to_o show_v that_o as_o to_o some_o gem_n at_o least_o my_o opinion_n of_o their_o have_v a_o adventitious_a gravity_n and_o consequent_o ingredient_n be_v very_o probable_a i_o have_v some_o american_n granat_n which_o i_o have_v a_o great_a and_o peculiar_a reason_n to_o believe_v have_v be_v once_o liquid_a body_n and_o therefore_o think_v they_o the_o more_o worthy_a to_o be_v examine_v and_o find_v their_o colour_n to_o be_v so_o deep_a that_o they_o be_v almost_o opacous_a and_o judge_v by_o my_o hand_n that_o they_o be_v much_o heavy_a than_o piece_n of_o crystal_n of_o the_o same_o bulk_n will_v be_v i_o weigh_v they_o in_o a_o pair_n of_o nice_a scale_n in_o the_o air_n and_o in_o the_o water_n and_o find_v they_o as_o i_o expect_v to_o be_v almost_o four_o time_n as_o heavy_a as_o water_n of_o the_o same_o bulk_n and_o consequent_o heavy_a by_o about_o a_o three_o part_n than_o piece_n of_o crystal_n equal_v they_o in_o bigness_n will_v be_v whence_o so_o great_a a_o accession_n of_o ponderousness_n proceed_v i_o shall_v tell_v you_o when_o i_o come_v to_o my_o next_o argument_n to_o which_o i_o shall_v advance_v as_o soon_o as_o i_o have_v note_v that_o though_o when_o colour_a gem_n have_v a_o great_a gravity_n than_o crystal_n it_o be_v a_o probable_a argument_n that_o they_o have_v some_o metalline_a pigment_n or_o other_o mineral_n substance_n mingle_v with_o they_o yet_o if_o such_o gem_n have_v no_o such_o surplusage_n of_o weight_n it_o will_v not_o follow_v that_o their_o colour_n can_v proceed_v from_o any_o mineral_n tincture_n since_o it_o be_v not_o unreasonable_a to_o conceive_v that_o a_o mineral_n substance_n may_v be_v present_a in_o a_o liquor_n such_o as_o the_o lapidescent_n juice_n that_o we_o suppose_v gem_n to_o be_v make_v of_o even_o when_o it_o add_v no_o manifest_a weight_n to_o the_o body_n that_o harbour_v it_o since_o i_o have_v observe_v what_o be_v odd_a that_o a_o mineral_n water_n which_o by_o its_o taste_n its_o effect_n and_o the_o colour_n it_o will_v strike_v appear_v to_o be_v rich_o impregnate_v with_o iron_n be_v careful_o by_o i_o examine_v hydrostatical_o do_v appear_v very_o little_a if_o at_o all_o sensible_o heavy_a than_o common_a water_n the_o three_o and_o last_o argument_n i_o shall_v now_o make_v use_n of_o be_v take_v from_o hence_o that_o out_o of_o divers_a medicinal_a stone_n and_o even_o out_o of_o some_o fine_a gem_n real_a and_o corporeal_a metal_n or_o other_o mineral_n substance_n may_v be_v extract_v of_o this_o argument_n i_o shall_v at_o present_a say_v the_o less_o because_o the_o further_a prosecution_n of_o it_o will_v be_v more_o proper_a in_o the_o second_o part_n of_o this_o discourse_n where_o i_o shall_v be_v oblige_v to_o handle_v it_o with_o reference_n to_o opacous_a gem_n in_o which_o its_o force_n will_v best_o appear_v and_o therefore_o i_o shall_v desire_v you_o to_o take_v notice_n when_o you_o arrive_v at_o that_o part_n of_o the_o subsequent_a discourse_n of_o those_o particular_n that_o may_v serve_v to_o strengthen_v the_o new_o propose_v argument_n and_o if_o it_o be_v object_v that_o the_o body_n there_o treat_v of_o be_v opacous_a stone_n not_o gem_n i_o have_v these_o thing_n to_o answer_v first_o that_o divers_a stone_n that_o be_v reckon_v among_o precious_a one_o be_v opacous_a too_o as_o the_o turquois_n the_o onyx_n the_o sardonix_n etc._n etc._n not_o to_o mention_v divers_a other_o as_o cats-eye_n opale_n etc._n etc._n which_o be_v as_o it_o be_v semi-opacous_a beside_o i_o much_o question_n whether_o diaphaneity_n be_v absolute_o necessary_a to_o the_o essence_n though_o it_o be_v to_o the_o beauty_n of_o those_o precious_a stone_n wherein_o it_o be_v usual_o find_v and_o i_o may_v here_o make_v it_o probable_a by_o discourse_n that_o transparency_n and_o opacity_n oftentimes_o depend_v but_o upon_o the_o manner_n of_o the_o pigmen_n dispersion_n through_o the_o stony_a matter_n of_o the_o gem_n and_o the_o convenient_a or_o inconvenient_a situation_n of_o the_o pore_n in_o reference_n to_o the_o beam_n of_o light_n but_o wave_v this_o speculative_a argument_n i_o shall_v rather_o take_v notice_n that_o several_a precious_a stone_n and_o even_a diamond_n themselves_o have_v sometime_o great_a cloud_n which_o make_v they_o in_o those_o part_n almost_o if_o not_o quite_o opacous_a without_o be_v thereby_o hinder_v from_o be_v true_a diamond_n or_o gem_n of_o this_o or_o that_o kind_n to_o which_o their_o hardness_n colour_n etc._n etc._n make_v they_o appertain_v and_o not_o to_o mention_v cornelion_n agat_n and_o some_o other_o stone_n that_o we_o may_v observe_v to_o be_v as_o the_o ting_a corpuscle_n happen_v to_o be_v in_o a_o due_a or_o a_o over_o great_a proportion_n mix_v with_o the_o petrescent_a matter_n and_o to_o be_v uniformly_n or_o inconvenient_o mingle_v with_o it_o some_o of_o they_o transparent_a and_o some_o of_o they_o semi-diaphanous_a i_o have_v see_v wear_v in_o
subsequent_a hypothesis_n and_o the_o argument_n it_o be_v found_v upon_o will_v appear_v to_o have_v be_v suggest_v to_o i_o by_o the_o nature_n of_o the_o thing_n itself_o and_o my_o way_n of_o consider_v it_o not_o to_o mention_v that_o sometime_o one_o may_v meet_v with_o a_o good_a particular_a conjecture_n in_o a_o author_n that_o understand_v not_o the_o importance_n of_o it_o himself_o and_o know_v not_o how_o to_o make_v use_n of_o it_o but_o build_v it_o on_o some_o such_o fabulous_a relation_n or_o erroneous_a principle_n as_o be_v apt_a to_o discredit_v it_o with_o wary_a reader_n unless_o they_o be_v such_o to_o who_o its_o compliance_n with_o the_o opinion_n they_o have_v on_o better_a ground_n already_o entertain_v happen_v to_o recommend_v it_o i_o know_v it_o may_v be_v think_v strange_a that_o i_o have_v be_v so_o very_o spare_v in_o the_o citation_n of_o those_o author_n that_o have_v write_v whole_a book_n about_o gem_n but_o i_o have_v this_o to_o say_v for_o myself_o that_o i_o have_v neither_o they_o nor_o so_o much_o as_o my_o own_o paper_n about_o the_o origine_fw-la of_o mineral_n at_o hand_n when_o i_o write_v the_o follow_a essay_n which_o i_o be_v the_o less_o trouble_v at_o upon_o two_o distinct_a account_n the_o first_o because_o i_o remember_v that_o several_a passage_n that_o i_o have_v meet_v with_o about_o the_o virtue_n of_o gem_n cite_v out_o of_o divers_a of_o those_o author_n be_v such_o as_o i_o shall_v have_v much_o scruple_v to_o vouch_v some_o of_o they_o be_v such_o as_o i_o know_v to_o be_v false_a other_o that_o i_o shrewd_o suspect_v not_o to_o be_v true_a and_o other_o that_o appear_v to_o i_o altogether_o incredible_a and_o the_o second_o because_o to_o forbear_v transcribe_v what_o my_o friend_n may_v probable_o have_v meet_v with_o in_o author_n already_o will_v best_o comlpy_a both_o with_o their_o desire_n which_o be_v to_o know_v my_o particular_a thought_n and_o with_o my_o design_n which_o be_v partly_o to_o see_v how_o far_o i_o can_v make_v out_o those_o thought_n by_o my_o own_o argument_n and_o observation_n assist_v only_o by_o some_o very_o few_o historical_a passage_n that_o i_o light_v on_o in_o writer_n not_o classie_n and_o partly_o to_o take_v this_o occasion_n to_o prosecute_v divers_a matter_n of_o fact_n relate_v to_o the_o subject_n i_o be_v treat_v of_o which_o probable_o will_v otherwise_o have_v be_v quite_o lose_v and_o i_o doubt_v not_o but_o if_o this_o first_o draught_n of_o my_o conception_n be_v by_o my_o friend_n think_v worthy_a of_o be_v enlarge_v it_o will_v not_o be_v difficult_a for_o i_o when_o i_o shall_v come_v at_o my_o book_n and_o paper_n again_o to_o enrich_v this_o tract_n with_o many_o history_n borrow_a from_o famous_a writer_n if_o that_o shall_v be_v think_v necessary_a by_o person_n that_o be_v possible_o less_o diffident_a of_o i_o than_o of_o they_o in_o short_a i_o propose_v this_o discourse_n but_o as_o a_o conjectural_a hypothesis_n wherein_o i_o attempt_v to_o derive_v the_o origine_fw-la of_o gem_n and_o one_o of_o the_o main_a cause_n i_o do_v not_o say_v the_o only_a cause_n of_o their_o quality_n and_o virtue_n from_o principle_n less_o remote_a and_o more_o intelligible_a than_o those_o of_o the_o peripatetic_n and_o have_v deliver_v divers_a observation_n and_o experiment_n of_o my_o own_o about_o the_o phaenomena_n of_o gem_n to_o explicate_v some_o of_o they_o by_o intelligible_a principle_n and_o illustrate_v other_o by_o resemble_v thing_n that_o may_v be_v real_o observe_v in_o nature_n or_o easy_o perform_v by_o art_n which_o way_n of_o handle_v my_o subject_n permit_v i_o to_o hope_n that_o whether_o or_o no_o i_o shall_v be_v think_v a_o lucky_a conjecturer_n about_o the_o subject_a i_o attempt_v i_o shall_v at_o least_o in_o some_o measure_n prove_v a_o benefactor_n to_o what_o be_v perhaps_o preferable_a even_o to_o lucky_a conjecture_n themselves_o the_o natural_a and_o experimental_a history_n of_o such_o noble_a subject_n as_o gem_n errata_fw-la page_n 31._o line_n 3._o read_v most_o of_o gem_n p._n 53._o l._n 7._o r._n yet_o i_o shall_v p._n 108._o l._n 20._o r._n scent_v steam_n p._n 146._o l._n 18._o r._n in_o close_a vessel_n p._n 168._o l._n 18._o r._n observation_n to_o which_o some_o p._n 164._o l._n 8._o r._n in_o air_n and_o water_n p._n 172._o l._n 2._o r._n of_o kin_n to_o metal_n p._n 178._o l._n 8._o r._n haemorrhagy_n p._n 179._o l._n 17._o r._n moisten_v p._n 180._o l._n 8._o r._n bolus_n a_o essay_n about_o the_o origine_fw-la and_o virtue_n of_o gem_n sect_n i._o though_o it_o will_v not_o perchance_o prove_v very_o difficult_a to_o propose_v to_o you_o my_o conjecture_n about_o the_o cause_n of_o the_o virtue_n of_o precious_a stone_n yet_o i_o fear_v it_o will_v not_o be_v easy_a for_o i_o to_o acquaint_v you_o full_o with_o the_o ground_n of_o it_o for_o unless_o i_o shall_v transcribe_v for_o you_o my_o whole_a discourse_n of_o the_o origine_fw-la of_o mineral_n in_o general_n of_o which_o you_o know_v stone_n make_v a_o part_n i_o can_v well_o lay_v before_o you_o all_o the_o consideration_n by_o which_o i_o have_v be_v induce_v to_o take_v 〈◊〉_d the_o conjecture_n or_o hypothesis_n i_o be_o about_o to_o propound_v and_o consequent_o i_o can_v well_o comply_v with_o your_o curiosity_n about_o gem_n without_o either_o omit_v several_a thing_n which_o may_v much_o countenance_n the_o follow_a discourse_n or_o propose_v without_o ample_o prove_v they_o some_o thing_n that_o i_o confess_v seem_v not_o clear_a nor_o some_o of_o they_o so_o much_o as_o probable_a by_o their_o own_o light_n but_o since_o you_o will_v have_v it_o so_o i_o will_v rather_o than_o disobey_v you_o present_v you_o in_o one_o discourse_n several_a thing_n concern_v gem_n whereof_o some_o belong_v to_o other_o of_o my_o little_a tract_n about_o the_o origine_fw-la of_o mineral_n from_o fluid_n or_o at_o least_o soft_a body_n tho'_o some_o indeed_o be_v more_o direct_o write_v concern_v gem_n notwithstanding_o that_o they_o be_v deliver_v not_o as_o a_o entire_a tract_n about_o that_o subject_n but_o as_o corollary_n that_o may_v be_v draw_v from_o and_o application_n that_o may_v be_v make_v of_o what_o have_v be_v in_o a_o more_o general_a way_n discourse_v about_o the_o origination_n of_o stone_n and_o other_o mineral_n and_o therefore_o presume_v that_o you_o will_v suppose_v with_o i_o in_o this_o discourse_n some_o few_o particular_n that_o i_o think_v i_o have_v elsewhere_o make_v probable_a and_o may_v perhaps_o do_v so_o from_o some_o of_o the_o phaenomena_n mention_v in_o this_o write_n itself_o i_o will_v immediate_o address_v myself_o to_o the_o subject_n of_o it_o if_o i_o do_v not_o think_v a_o previous_a admonition_n very_o requisite_a for_o i_o must_v at_o the_o very_a entrance_n of_o this_o discourse_n desire_v you_o to_o take_v notice_n that_o when_o i_o propose_v my_o conjecture_n about_o the_o virtue_n of_o gem_n i_o do_v not_o suppose_v the_o truth_n of_o all_o or_o so_o much_o as_o the_o ten_o part_n of_o those_o wonderful_a property_n that_o man_n have_v be_v please_v to_o ascribe_v to_o they_o for_o not_o only_o some_o of_o the_o writer_n of_o natural_a magic_n but_o man_n of_o note_n who_o shall_v be_v more_o cautious_a and_o sober_a have_v deliver_v in_o their_o write_n many_o thing_n concern_v gem_n which_o be_v so_o unfit_a to_o be_v credit_v and_o some_o of_o they_o perhaps_o so_o impossible_a to_o be_v true_a that_o i_o hope_v the_o believer_n of_o they_o will_v among_o the_o votary_n to_o philosophy_n be_v as_o great_a rarity_n as_o gem_n themselves_o be_v among_o stone_n and_o those_o that_o can_v admit_v such_o unlikely_a fable_n will_v be_v as_o much_o despise_v by_o the_o judicious_a as_o jewel_n can_v be_v prize_v by_o the_o rich._n for_o my_o part_n i_o never_o see_v any_o great_a feat_n perform_v by_o those_o hard_a and_o costly_a stone_n as_o diamond_n ruby_n saphire_n that_o be_v wont_a to_o be_v wear_v in_o ring_n but_o yet_o because_o physician_n have_v for_o so_o many_o age_n think_v fit_a to_o receive_v the_o fragment_n of_o precious_a stone_n into_o some_o of_o their_o most_o celebrate_a cordial_a composition_n because_o also_o divers_a eminent_a man_n of_o that_o profession_n some_o of_o they_o famous_a writer_n and_o some_o virtousi_n of_o my_o own_o acquaintance_n have_v by_o their_o write_n or_o by_o word_n of_o mouth_n inform_v i_o of_o very_o considerable_a effect_n of_o some_o gem_n especial_o crystal_n upon_o their_o own_o particular_a observation_n and_o last_o because_o that_o as_o i_o shall_v show_v anon_o i_o find_v no_o impossibility_n that_o at_o least_o some_o costly_a and_o less_o hard_a though_o indeed_o more_o valuable_a gem_n may_v have_v considerable_a operation_n upon_o humane_a body_n
at_o least_o semediaphanous_a a_o cavity_n wherein_o be_v coagulate_v very_a minute_n but_o polish_a and_o crystalline_a stone_n which_o seem_v to_o have_v their_o point_n inward_o which_o argue_v that_o there_o have_v be_v some_o liquor_n in_o which_o these_o glister_a particle_n have_v shoot_v though_o in_o process_n of_o time_n the_o remain_v and_o incoagulable_a part_n of_o it_o may_v have_v be_v imbibe_v by_o the_o ambient_fw-la matter_n if_o not_o have_v escape_v through_o it_o by_o virtue_n of_o some_o peculiar_a congruity_n of_o it_o with_o the_o pore_n of_o the_o stone_n which_o need_v not_o be_v think_v impossible_a since_o experience_n have_v assure_v we_o that_o some_o solid_a stone_n and_o even_a gem_n may_v be_v though_o slow_o penetrate_v or_o have_v their_o texture_n alter_v by_o common_a water_n noâ—_n be_v these_o the_o only_a heterogeneous_a substance_n i_o find_v include_v in_o this_o stone_n and_o if_o as_o amber_n be_v reckon_v among_o gem_n and_o be_v sometime_o of_o a_o great_a hardness_n than_o one_o will_v expect_v so_o i_o can_v reckon_v it_o among_o true_a stone_n it_o be_v easy_a for_o i_o to_o borrow_v thence_o a_o great_a confirmation_n of_o what_o i_o have_v be_v say_v and_o how_o ever_o it_o will_v afford_v â—â—_o a_o illustration_n of_o it_o for_o not_o to_o mention_v many_o thing_n of_o what_o i_o elsewhere_o recite_v myself_o to_o have_v see_v in_o amber_n i_o have_v now_o by_o i_o a_o fine_a piece_n of_o clerâ—_n and_o solid_a amber_n present_v i_o by_o a_o person_n no_o less_o extraordinary_a than_o it_o in_o which_o be_v include_v a_o large_a entire_a fly_n in_o shape_n and_o size_n much_o like_o a_o grass-hopper_n but_o various_o and_o curious_o colour_v with_o his_o wing_n display_v to_o these_o observation_n i_o shall_v add_v only_o this_o that_o i_o have_v have_v myself_o and_o show_v to_o other_o one_o of_o that_o sort_n of_o pale_a amethyst_n that_o some_o call_v white_a amethyst_n which_o have_v be_v cut_v to_o be_v set_v in_o a_o ring_n or_o turn_v into_o a_o seal_n and_o be_v like_o that_o sort_n of_o gem_n so_o hard_o that_o i_o can_v ready_o cut_v glass_n with_o it_o and_o yet_o in_o the_o body_n of_o this_o stone_n there_o appear_v to_o be_v a_o considerable_a number_n of_o thing_n that_o look_v just_a as_o if_o they_o have_v be_v hair_n some_o of_o they_o lie_v parallel_n and_o other_o incline_v to_o one_o another_o and_o have_v contemplate_v they_o as_o well_o by_o daylight_n as_o candle-light_n and_o in_o divers_a position_n in_o reference_n to_o the_o light_n and_o the_o eye_n some_o of_o they_o seem_v at_o time_n to_o be_v of_o a_o lovely_a red_a colour_n but_o reflect_v the_o light_n as_o if_o they_o be_v well_o fill_v either_o with_o air_n or_o water_n but_o for_o the_o most_o part_n they_o do_v as_o i_o be_v say_v seem_v to_o be_v hair_n of_o a_o brownish_a colour_n which_o make_v the_o stone_n not_o a_o little_a wonder_v at_o even_o by_o curious_a and_o skilful_a men._n i_o leave_v you_o to_o judge_v whether_o it_o will_v be_v fit_a here_o to_o add_v that_o i_o have_v sometime_o suspect_v that_o even_o in_o diamond_n themselves_o there_o may_v possible_o be_v find_v intercept_v or_o mingle_v with_o a_o pure_a lapidescent_n substance_n some_o particle_n of_o heterogeneous_a matter_n and_o that_o in_o this_o suspicion_n i_o be_v somewhat_o confirm_v as_o by_o the_o odd_a cloud_n i_o have_v observe_v in_o a_o extraordinary_a diamond_n and_o by_o some_o hydrostatical_a and_o other_o observation_n i_o make_v about_o those_o stone_n some_o of_o which_o i_o find_v heavy_a than_o either_o crystal_n or_o white_a marble_n so_o by_o my_o have_v purposely_o demand_v of_o a_o ancient_a cutter_n of_o diamond_n of_o great_a practice_n and_o experience_n whether_o he_o observe_v not_o a_o sensible_a difference_n of_o weight_n among_o diamond_n of_o the_o same_o place_n for_o to_o this_o he_o reply_v that_o he_o have_v especial_o in_o those_o that_o be_v cloudy_a or_o foul_a insomuch_o that_o show_v i_o a_o diamond_n that_o seem_v to_o i_o to_o be_v about_o the_o bigness_n of_o two_o ordinary_a pease_n or_o less_o he_o affirm_v that_o he_o sometime_o find_v in_o diamond_n of_o that_o bigness_n about_o a_o carrot_fw-la which_o be_v by_o common_a estimation_n four_o grain_n difference_n in_o point_n of_o weight_n six_o the_o last_o argument_n i_o shall_v employ_v to_o show_v that_o the_o matter_n of_o divers_a gem_n may_v have_v once_o be_v fluid_a may_v be_v take_v from_o the_o proof_n you_o will_v meet_v with_o in_o the_o follow_a part_n of_o this_o tract_n of_o the_o second_o member_n of_o our_o hypothesis_n for_o if_o it_o shall_v appear_v that_o several_a even_o of_o the_o transparent_a gem_n have_v metalline_a or_o other_o extraneous_a mineral_n body_n mingle_v with_o they_o per_fw-la minima_fw-la it_o will_v be_v very_o agreeable_a to_o reason_n to_o suppose_v that_o such_o a_o mixture_n be_v make_v when_o the_o mingle_a body_n be_v in_o a_o fluid_a form_n since_o beside_o that_o one_o may_v well_o ask_v how_o else_o the_o metalline_a corpuscle_n come_v to_o be_v convey_v into_o such_o compact_a and_o hard_a body_n as_o gem_n it_o be_v very_o easy_a to_o conceive_v if_o our_o hypothesis_n be_v admit_v and_o very_o hard_o otherwise_o to_o apprehend_v how_o among_o body_n that_o differ_v toto_fw-la genere_fw-la as_o metal_n and_o stone_n there_o shall_v be_v make_v mixture_n so_o exquisite_a as_o many_o of_o these_o appear_v to_o be_v partly_o by_o the_o uniform_a coloration_n of_o the_o gem_n and_o partly_o by_o the_o diaphaneity_n retain_v notwithstanding_o this_o dispersion_n of_o mineral_n pigment_n through_o the_o whole_a mass_n and_o in_o many_o instance_n also_o by_o the_o curious_a figuration_n that_o we_o have_v late_o be_v discourse_v of_o postscript_n to_o all_o the_o forego_n circumstance_n i_o can_v now_o add_v something_o that_o i_o meet_v with_o since_o i_o think_v to_o conclude_v with_o the_o last_o of_o they_o and_o that_o tend_v high_o to_o the_o confirmation_n of_o our_o hypothesis_n in_o a_o tract_n that_o make_v part_n of_o a_o small_a book_n fresh_o publish_a in_o french_a principal_o to_o acquaint_v man_n with_o the_o way_n of_o estimate_v gem_n according_a to_o the_o rate_n of_o modern_a jeweller_n the_o anonymus_fw-la but_o curious_a author_n take_v occasion_n to_o give_v we_o from_o the_o mouth_n as_o he_o affirm_v of_o the_o famous_a late_a traveller_n he_o converse_v with_o in_o divers_a place_n and_o who_o relation_n be_v indeed_o the_o recent_a i_o have_v see_v be_v print_n a_o account_n of_o the_o number_n and_o name_n of_o the_o place_n where_o diamond_n and_o ruby_n be_v find_v in_o the_o indies_n add_v some_o circumstance_n and_o particularity_n about_o the_o quality_n of_o the_o soil_n in_o those_o place_n that_o i_o have_v not_o elsewhere_o meet_v with_o this_o author_n then_o speak_v of_o the_o first_o of_o those_o three_o diamond-mine_n which_o he_o make_v to_o be_v the_o only_a one_o in_o the_o east-indies_n have_v tell_v we_o that_o the_o stone_n be_v there_o find_v some_o in_o the_o ground_n and_o some_o in_o the_o rock_n subjoin_v that_o those_o that_o be_v draw_v from_o the_o rock_n or_o the_o neighbour_a part_n have_v ordinary_o a_o good_a water_n but_o for_o those_o which_o be_v draw_v out_o of_o the_o ground_n 9_o que_n ilya_n quelque_fw-fr sable_a nâ—ir_fw-fr ou_fw-fr rouge_fw-fr parmi_fw-fr la_fw-fr terrâ—_n le_fw-fr diamant_n aussi_fw-fr en_fw-fr aura_fw-fr quelqu_fw-fr '_o un_fw-fr pag._n 9_o their_o water_n partake_v of_o the_o colour_n or_o soil_v wherein_o they_o be_v find_v so_o that_o if_o the_o earth_n be_v clean_a and_o somewhat_o sandy_a the_o diamond_n will_v be_v of_o a_o good_a water_n but_o if_o it_o be_v fat_a or_o black_a or_o of_o another_o colour_n they_o will_v have_v some_o tincture_n of_o it_o nay_o he_o immediate_o annex_v that_o if_o there_o be_v some_o black_a or_o red_a sand_n among_o the_o earth_n the_o diamond_n will_v also_o have_v some_o grain_n of_o it_o and_o elsewhere_o mention_v the_o second_o mine_n of_o diamond_n which_o the_o native_n call_v gem_n he_o admonish_v his_o reader_n that_o in_o this_o as_o in_o the_o mine_n of_o visapour_n which_o be_v that_o former_o mention_v the_o stone_n partake_v of_o the_o quality_n of_o the_o soil_n where_o they_o be_v find_v so_o that_o if_o that_o be_v boggy_a or_o moist_a the_o stone_n will_v incline_v to_o blackness_n and_o if_o it_o be_v red_a it_o will_v have_v a_o eye_n of_o that_o colour_n elsewhere_o he_o tell_v we_o that_o of_o late_a year_n there_o be_v find_v in_o the_o kingdom_n of_o golcondâ—_n store_n of_o diamond_n which_o be_v bring_v to_o the_o nababe_n or_o first_o minister_n of_o state_n who_o forbid_v the_o make_v any_o further_a search_n after_o they_o 18.19_o page_n 18.19_o
the_o spirit_n be_v yet_o there_o it_o be_v but_o new_o take_v from_o the_o spring_n itself_o to_o examine_v it_o hydrostatical_o with_o very_o good_a scale_n and_o much_o diligence_n i_o convince_v the_o virtuoso_n that_o assist_v that_o this_o ferruginous_a water_n be_v very_o little_a if_o at_o all_o heavy_a in_o specie_fw-la than_o other_o water_n which_o be_v bring_v as_o common_a water_n to_o be_v compare_v with_o it_o and_o examine_v with_o the_o same_o scale_n and_o after_o the_o same_o manner_n and_o now_o if_o you_o recall_v to_o mind_v what_o i_o have_v elsewhere_o say_v partly_o of_o the_o atmospher_n of_o solid_a body_n and_o partly_o of_o the_o great_a efficacy_n of_o effluvium_n i_o hope_v you_o will_v not_o think_v it_o absurd_a to_o conjecture_v both_o that_o some_o precious_a stone_n may_v have_v medical_n virtue_n and_o that_o divers_a of_o these_o may_v be_v ascribe_v to_o the_o mineral_n substance_n whereof_o they_o participate_v or_o consist_v and_o especial_o to_o those_o which_o be_v best_a fit_v to_o exert_v their_o power_n by_o the_o copious_a effluxion_n of_o their_o more_o agile_a and_o subtle_a part_n and_o by_o this_o time_n it_o may_v be_v seasonable_a to_o tell_v you_o that_o though_o what_o i_o have_v hitherto_o discourse_v do_v chief_o belong_v to_o transparent_a gem_n yet_o divers_a of_o the_o thing_n already_o deliver_v may_v with_o no_o great_a alteration_n be_v apply_v to_o opacous_a gem_n of_o which_o i_o shall_v speak_v much_o more_o brief_o not_o only_o for_o the_o reason_n just_a now_o give_v but_o because_o if_o we_o have_v show_v as_o i_o hope_v we_o have_v that_o even_o diaphanous_a gem_n may_v be_v endow_v with_o virtue_n by_o the_o mineral_n substance_n they_o contain_v or_o be_v in_o part_n make_v up_o of_o the_o argument_n will_v hold_v more_o strong_o as_o to_o opacous_a gem_n both_o because_o these_o be_v for_o the_o most_o part_n much_o less_o hard_a than_o the_o other_o and_o because_o it_o be_v far_o more_o easy_a to_o show_v by_o their_o specific_a gravity_n and_o the_o compoundedness_n of_o divers_a of_o they_o that_o the_o dark_a one_o than_o it_o be_v that_o the_o clear_a one_o may_v partly_o and_o sometime_o plentiful_o consist_v of_o mineral_n substance_n embody_v with_o and_o harden_v by_o petrescent_a juice_n or_o petrific_a spirit_n in_o favour_n of_o this_o doctrine_n i_o shall_v endeavour_v in_o the_o first_o place_n to_o show_v that_o what_o have_v be_v deliver_v be_v possible_a and_o afterward_o set_v down_o some_o particular_n to_o make_v it_o very_o probable_a the_o first_o part_n of_o my_o task_n may_v be_v easy_o perform_v or_o perhaps_o will_v be_v needless_a if_o i_o be_v sure_a you_o have_v no_o need_n to_o be_v tell_v of_o any_o thing_n i_o have_v write_v about_o lapidescent_n juice_n but_o for_o great_a security_n i_o shall_v in_o this_o place_n brief_o intimate_v that_o among_o the_o kind_n of_o those_o liquor_n i_o have_v observe_v a_o sort_n that_o be_v of_o so_o fine_a a_o substance_n and_o yet_o of_o so_o petrify_v a_o virtue_n that_o it_o will_v penetrate_v and_o petrifie_v body_n of_o very_a differ_a kind_n and_o yet_o scarce_o if_o at_o all_o visible_o increase_v their_o bulk_n or_o change_v their_o shape_n or_o colour_n to_o which_o purpose_n i_o remember_v that_o i_o have_v see_v divers_a animal_n and_o vegetable_a substance_n so_o petrify_v as_o scarce_o at_o all_o to_o be_v take_v notice_n of_o by_o their_o appearance_n to_o have_v be_v alter_v by_o the_o operation_n of_o the_o petrescent_a liquor_n i_o have_v with_o pleasure_n see_v a_o thin_a cream-cheese_n turn_v into_o stone_n where_o the_o size_n shape_n and_o colour_n even_o of_o the_o wrinkle_n and_o the_o bluish_a mould_n which_o it_o seem_v it_o begin_v to_o have_v when_o the_o liquor_n invade_v it_o be_v so_o well_o preserve_v that_o a_o hungry_a man_n will_v not_o have_v scruple_v to_o have_v fall_v upon_o it_o for_o a_o good_a bit._n and_o as_o for_o the_o hardness_n that_o this_o petrescent_a juice_n can_v give_v to_o the_o body_n that_o it_o penetrate_v i_o shall_v now_o only_o remind_v you_o of_o what_o i_o late_o tell_v you_o that_o i_o have_v have_v and_o i_o think_v yet_o have_v in_o another_o place_n a_o pretty_a quantity_n of_o wood_n petrify_v in_o england_n which_o retain_v its_o former_a figure_n and_o grain_n and_o scarce_o at_o all_o visible_o increase_v in_o bulk_n be_v so_o very_o hard_o that_o i_o can_v make_v impression_n with_o it_o upon_o iron_n and_o glass_n itself_o and_o make_v it_o strike_v fire_n like_o a_o excellent_a flint_n to_o which_o i_o shall_v here_o add_v that_o the_o stony_a part_n do_v not_o suffer_v the_o wood_n which_o they_o have_v penetrate_v to_o be_v reduce_v in_o the_o fire_n either_o to_o ash_n or_o charcoal_n and_o i_o have_v by_o i_o a_o lump_n of_o mineral_n substance_n wherein_o a_o petrescent_a liquor_n that_o fill_v the_o large_a intervall_n between_o they_o be_v transparent_a enough_o and_o hard_a than_o most_o stone_n as_o far_o as_o we_o can_v guess_v by_o some_o trial_n of_o it_o make_v by_o a_o skilful_a ingraver_n of_o gem_n and_o to_o these_o instance_n may_v be_v add_v many_o other_o if_o it_o do_v not_o by_o these_o few_o sufficient_o appear_v that_o petrifick_a agent_n may_v insinuate_v themselves_o into_o the_o pore_n of_o various_a body_n and_o turn_v they_o into_o stone_n without_o otherwise_o destroy_v their_o pristine_a nature_n or_o so_o much_o as_o their_o former_a figure_n wherefore_o have_v in_o general_n show_v our_o hypothesis_n to_o be_v possible_a we_o may_v now_o descend_v to_o four_o or_o five_o particular_a argument_n that_o it_o be_v hope_v may_v help_v to_o render_v it_o very_o probable_a and_o these_o i_o shall_v fetch_v partly_o from_o the_o great_a specific_a gravity_n of_o divers_a opacous_a and_o medicinal_a stone_n partly_o from_o the_o fitness_n of_o our_o hypothesis_n to_o render_v a_o reason_n of_o divers_a phaenomena_n relate_v thereunto_o some_o of_o they_o scarce_o at_o all_o and_z other_o much_o less_o probable_o to_o be_v account_v for_o without_o it_o partly_o from_o the_o metalline_a substance_n to_o be_v manifest_o separate_v or_o obtain_v from_o the_o stone_n we_o be_v treat_v of_o and_o partly_o from_o the_o nature_n of_o the_o body_n whereof_o medicinal_a stone_n seem_v to_o be_v compound_v arg._n i._o that_o the_o specific_a gravity_n of_o divers_a opacous_a stone_n whereunto_o medicinal_a property_n be_v ascribe_v be_v very_o considerable_a be_v a_o truth_n which_o if_o those_o that_o have_v write_v ten_o of_o such_o concretion_n have_v be_v verse_v in_o hydrostaticks_n &_o have_v have_v the_o curiosity_n to_o examine_v they_o that_o way_n they_o may_v have_v easy_o discover_v as_o will_v quick_o appear_v by_o particular_a example_n before_o the_o mention_n whereof_o of_o it_o will_v be_v fit_a for_o i_o take_v notice_n to_o you_o that_o consider_v with_o myself_o that_o white_a marble_n be_v general_o allow_v to_o be_v a_o pure_a and_o solid_a stone_n and_o upon_o the_o score_n of_o its_o whiteness_n be_v likely_a than_o most_o other_o to_o be_v free_a from_o mineral_n mixture_n i_o think_v i_o may_v at_o least_o as_o well_o pitch_n upon_o that_o as_o on_o any_o other_o for_o the_o standard_n of_o the_o specific_a gravity_n of_o opacous_a stone_n as_o they_o be_v mere_o such_o and_o according_o have_v weigh_v a_o piece_n of_o white_a marble_n in_o air_n and_o water_n i_o find_v it_o to_o be_v in_o weight_n to_o a_o equal_a bulk_n of_o that_o liquor_n very_o near_o 2_o 12_o 100_o to_o i_o or_o that_o the_o proportion_n with_o very_o little_a error_n may_v be_v the_o better_o remember_v as_o two_o and_o seven_o ten_o to_o one_o and_o to_o make_v trial_n in_o a_o stone_n uncoloured_a but_o because_o hard_a suppose_v to_o be_v of_o a_o close_a texture_n we_o examine_v a_o fine_a white_a bible_n which_o we_o find_v to_o be_v to_o a_o equal_a magnitude_n of_o water_n as_o two_o and_o above_o six_o ten_o to_o one_o this_o be_v determine_v it_o be_v not_o difficult_a for_o i_o to_o think_v both_o that_o divers_a body_n that_o common_o pass_v for_o mere_a stone_n be_v more_o ponderous_a than_o white_a marble_n of_o the_o same_o bulk_n and_o that_o if_o there_o be_v any_o such_o great_a surplusage_n of_o specific_a weight_n as_o i_o guess_v many_o will_v be_v find_v to_o have_v above_o that_o of_o marble_n it_o may_v proceed_v from_o some_o metalline_a body_n though_o not_o visible_o yet_o real_o and_o perhaps_o plentiful_o mingle_v with_o the_o petrescent_a matter_n of_o these_o stone_n the_o late_a part_n of_o this_o conjecture_n will_v hereafter_o be_v confirm_v in_o the_o three_o argument_n which_o make_v it_o unnecessary_a for_o i_o to_o give_v you_o now_o of_o the_o former_a more_o than_o a_o few_o instance_n which_o
i_o shall_v soon_o dispatch_v by_o tell_v you_o that_o i_o quick_o find_v by_o weigh_v the_o follow_a mineral_n first_o in_o the_o air_n and_o then_o in_o the_o water_n that_o a_o bloodstone_n buy_v at_o the_o druggist_n be_v in_o weight_n to_o water_n of_o the_o same_o bulk_n as_o 5_o 7_o 10_o to_o 1_o the_o loadstone_n i_o then_o try_v for_o all_o be_v not_o e-equal_o heavy_a in_o specie_fw-la as_o 4_o and_o 6th_n 10_o to_z 1_o lâ—pis_n calaminaris_n use_v for_o rheum_n in_o the_o eye_n and_o to_o turn_v copper_n into_o brass_n as_o 4_o 7_o 16_o to_o one_o lapis_n tutiae_fw-la as_o they_o call_v it_o which_o be_v also_o much_o employ_v in_o rheumatic_a eye_n as_o very_o near_o 5_o to_o 1._o but_o here_o i_o must_v advertise_v you_o that_o i_o have_v not_o find_v the_o proportion_n of_o each_o of_o these_o body_n and_o water_n to_o be_v any_o thing_n near_o constant_o the_o same_o but_o sometime_o to_o differ_v very_o much_o in_o particular_a stone_n of_o the_o same_o kind_n which_o agree_v very_o well_o with_o our_o hypothesis_n for_o according_a to_o that_o those_o particular_a stone_n that_o happen_v to_o partake_v more_o plentiful_o of_o mineral_n substance_n heavy_a in_o specie_fw-la than_o stone_n as_o such_o need_v to_o be_v aught_o to_o be_v more_o ponderous_a than_o other_o of_o the_o same_o kind_n that_o be_v not_o so_o qualify_v i_o say_v heavy_a in_o specie_fw-la than_o a_o stone_n as_o such_o need_n to_o be_v because_o there_o be_v substance_n that_o be_v reckon_v among_o mineral_n and_o be_v capable_a of_o endow_v the_o stony_a matter_n wherewith_o they_o be_v coagulate_v with_o medical_n virtue_n and_o yet_o those_o substance_n may_v make_v the_o stone_n or_o aggregate_v whereof_o they_o be_v make_v not_o to_o be_v heavy_a but_o light_a in_o specie_fw-la from_o jet_n which_o in_o some_o part_n of_o europe_n be_v find_v in_o quarry_n of_o mine_n be_v indeed_o a_o fossil_n which_o be_v wont_a to_o be_v reckon_v among_o stone_n and_o by_o many_o wear_v as_o a_o gem_n i_o obtain_v no_o inconsiderable_a proportion_n of_o oil_n and_o have_v weigh_v choice_n jet_v itself_o in_o water_n i_o find_v it_o to_o be_v bulk_n for_o bulk_n to_o that_o liquor_n but_o as_o 1_o 22_o 10â—_o to_o 1._o and_o there_o be_v some_o other_o fossil_n hard_o as_o stone_n and_o pollishable_a as_o marble_n from_o which_o i_o have_v by_o distillation_n obtain_v two_o kind_n of_o oil_n whereof_o one_o be_v light_a than_o common_a water_n which_o show_v that_o even_o bituminous_a and_o light_a substance_n may_v be_v ingredient_n of_o a_o stone_n and_o that_o salt_n which_o be_v most_o of_o they_o less_o heavy_a in_o specie_fw-la then_o white_a marble_n may_v plentiful_o concur_v to_o the_o make_v up_o of_o stone_n i_o shall_v have_v occasion_n to_o manifest_v at_o the_o close_a of_o this_o discourse_n by_o those_o stone_n whereof_o we_o in_o england_n use_v to_o make_v vitriol_n the_o forego_v reflection_n i_o have_v here_o touch_v upon_o because_o i_o will_v intimate_v to_o you_o that_o stone_n that_o be_v lighteâ—_n in_o specie_fw-la then_o white_a marble_n may_v be_v compound_v of_o fossil_n whence_o they_o may_v derive_v peculiar_a quality_n at_o the_o same_o time_n when_o i_o tell_v you_o that_o in_o my_o opinion_n such_o stone_n as_o be_v considerable_o more_o heavy_a in_o specie_fw-la than_o marble_n may_v afford_v we_o a_o strong_a presumption_n of_o their_o owe_v their_o gravity_n to_o the_o mixture_n of_o metalline_a or_o mineral_n substance_n and_o this_o may_v suffice_v for_o our_o first_o argument_n arg._n ii_o the_o next_o shall_v be_v take_v from_o the_o consideration_n of_o some_o phaenomena_n relate_v to_o medicinal_a stone_n which_o agree_v very_o well_o with_o our_o hypothesis_n and_o will_v scarce_o be_v very_o well_o explicate_v without_o it_o and_o 1._o as_o to_o transparent_a gem_n themselves_o i_o have_v learn_v by_o inquiry_n of_o traveller_n that_o have_v visit_v those_o part_n of_o the_o east_n indies_n where_o they_o grow_v that_o sometime_o one_o sort_n of_o gem_n sometime_o another_o and_o sometime_o also_o diamond_n themselves_o be_v find_v include_v in_o the_o rock_n where_o they_o be_v dig_v for_o or_o in_o the_o midst_n of_o hard_a loose_a stone_n which_o must_v be_v break_v in_o piece_n to_o take_v out_o the_o diamond_n or_o other_o enclose_a gem_n which_o phaenomenon_n will_v be_v hard_a to_o be_v account_v for_o unless_o by_o our_o hypothesis_n according_a to_o which_o it_o may_v rational_o be_v suppose_v that_o the_o gem_n be_v first_o form_v either_o in_o earth_n or_o some_o other_o soft_a and_o easy_o permeable_a substance_n which_o be_v afterward_o pervade_v by_o some_o petrific_a juice_n or_o spirit_n be_v turn_v into_o rock_n or_o loose_a stone_n according_a as_o the_o earth_n and_o other_o ambient_fw-la matter_n chance_v to_o be_v a_o entire_a and_o coherent_a mass_n or_o divide_v into_o clod_n &_o other_o portion_n and_o i_o remember_v that_o the_o governor_n of_o a_o american_n colony_n have_v send_v i_o among_o other_o rarity_n dig_v up_o in_o his_o country_n a_o odd_a kind_n of_o mineral_n that_o seem_v more_o ponderous_a than_o at_o first_o sight_n it_o promise_v i_o have_v the_o curiosity_n to_o break_v it_o and_o find_v in_o it_o here_o and_o there_o several_a gem_n which_o by_o their_o figuration_n and_o some_o other_o circumstance_n be_v conclude_v to_o have_v be_v form_v there_o before_o the_o ambient_fw-la mineral_n have_v obtain_v the_o nature_n it_o then_o appear_v to_o be_v of_o and_o in_o opacous_a stone_n it_o may_v hence_o happen_v that_o a_o great_a lump_n of_o medicinal_a earth_n may_v be_v invade_v and_o petrify_v after_o the_o new_o mention_v manner_n so_o that_o it_o may_v not_o be_v think_v incredible_a that_o some_o of_o these_o medicinal_a stone_n shall_v be_v very_o large_a in_o comparison_n of_o other_o as_o i_o remember_v that_o a_o ingenious_a physician_n tell_v i_o of_o a_o spleen-stone_n as_o they_o call_v they_o in_o the_o hand_n of_o a_o acquaintance_n of_o his_o where_o i_o may_v have_v see_v it_o if_o my_o occasion_n have_v permit_v amount_v to_o about_o fourscore_o pound_n weight_n and_o on_o this_o occasion_n i_o also_o remember_v that_o even_o in_o a_o medicinal_a stone_n much_o hard_a and_o heavy_a than_o marble_n and_o whereof_o i_o have_v see_v lump_n far_o great_a than_o i_o can_v lift_v i_o remember_v i_o say_v that_o have_v have_v the_o curiosity_n to_o cause_v a_o pretty_a big_a piece_n violent_o break_v off_o from_o the_o mass_n whereto_o it_o belong_v to_o be_v saw_v asunder_o that_o i_o may_v consider_v the_o internal_a texture_n as_o far_o as_o it_o be_v visible_a i_o find_v several_a empty_a cavity_n of_o differ_v size_n and_o figure_n in_o the_o solid_a substance_n of_o the_o stone_n which_o i_o think_v i_o have_v not_o yet_o lose_v which_o seem_v to_o argue_v that_o this_o compact_a and_o ponderous_a body_n be_v make_v of_o a_o stony_a nature_n by_o the_o superven_a of_o some_o petrescent_a liquor_n or_o spirit_n upon_o porous_a earth_n or_o some_o other_o consistent_a substance_n for_o if_o it_o have_v be_v a_o mere_a liquor_n wherein_o those_o cavity_n must_v have_v be_v so_o many_o aerial_a bubble_n it_o be_v not_o like_a that_o some_o of_o they_o shall_v have_v such_o irregular_a shape_n and_o that_o all_o shall_v have_v continue_v without_o emerge_v to_o the_o top_n 2._o our_o hypothesis_n will_v also_o help_v to_o render_v a_o reason_n of_o what_o seem_v exceed_o difficult_a to_o be_v explicate_v namely_o how_o some_o gem_n that_o seem_v to_o be_v entire_a stone_n be_v in_o part_n of_o one_o colour_n and_o in_o that_o which_o be_v contiguous_a to_o it_o of_o a_o quite_o differ_v of_o which_o sort_n we_o have_v the_o sardonix_n and_o some_o other_o opacous_a gem_n and_o i_o have_v observe_v the_o like_a though_o very_o rare_o in_o diaphanous_a one_o for_o according_a to_o our_o hypothesis_n it_o may_v be_v say_v that_o a_o portion_n of_o matter_n imbue_v with_o one_o of_o the_o tincture_n of_o the_o particoloured_a gem_n be_v first_o form_v and_o afterward_o some_o petrescent_a juice_n endow_v with_o another_o colour_n come_v to_o settle_v contiguous_o to_o it_o and_o so_o by_o accretion_n make_v up_o one_o stone_n with_o it_o i_o may_v illustrate_v this_o by_o tell_v you_o that_o though_o fire_n do_v make_v a_o far_o great_a agitation_n of_o body_n melt_v by_o it_o than_o need_v be_v suppose_v in_o cold_a petrescent_a liquor_n yet_o i_o have_v find_v in_o make_v artificial_a gem_n that_o by_o some_o mischance_n or_o error_n in_o the_o operation_n the_o mineral_n pigment_n have_v rich_o tinge_v one_o part_n of_o the_o transparent_a mass_n without_o at_o all_o impart_v that_o colour_n to_o the_o very_a next_o part_n to_o it_o so_o that_o if_o i_o shall_v show_v