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these_o subtle_a and_o poisonous_a effluvia_fw-la it_o will_v probable_o be_v here_o expect_v that_o among_o the_o epidemical_a disease_n that_o our_o hypothesis_n derive_v from_o subterraneal_a effluvia_fw-la i_o shall_v particular_o treat_v of_o the_o cause_n of_o pestilential_a fever_n and_o the_o plague_n itself_o but_o though_o some_o such_o fever_n may_v not_o improbable_o be_v in_o great_a part_n impute_v to_o the_o noxious_a expiration_n of_o the_o globe_n we_o inhabit_v yet_o as_o to_o the_o true_a plague_n itself_o i_o free_o confess_v i_o be_o at_o a_o loss_n about_o its_o origine_fw-la the_o sacred_a write_n express_o teach_v that_o some_o plague_n and_o particular_o that_o which_o in_o david_n time_n sweep_v away_o in_o three_o day_n 70000_o person_n have_v be_v in_o a_o extraordinary_a manner_n inflict_v by_o god_n and_o to_o i_o it_o appear_v either_o scarce_o possible_a or_o far_o more_o difficult_a than_o those_o that_o have_v not_o attentive_o enough_o consider_v 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such_o as_o may_v without_o incongruity_n be_v look_v upon_o as_o the_o pestilence_n of_o beast_n and_o it_o be_v the_o less_o likely_a that_o these_o sweep_a and_o contagious_a malady_n shall_v be_v always_o send_v for_o the_o punishment_n of_o impious_a man_n because_o i_o remember_v to_o have_v read_v in_o good_a author_n that_o as_o some_o plague_n destroy_v both_o man_n and_o beast_n so_o some_o other_o do_v peculiar_o destroy_v brute_n animal_n of_o very_o little_a consideration_n or_o use_n to_o man_n as_o cat_n etc._n etc._n upon_o these_o and_o the_o like_a reason_n i_o have_v sometime_o suspect_v that_o in_o the_o controversy_n about_o the_o origine_fw-la of_o the_o plague_n namely_o whether_o it_o be_v natural_a or_o supernatural_a neither_o of_o the_o contend_a party_n be_v altogether_o in_o the_o right_n since_o it_o be_v very_o possible_a that_o some_o pestilence_n may_v not_o break_v forth_o without_o a_o extraordinary_a though_o perhaps_o not_o immediate_a 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and_o that_o in_o divers_a pestilence_n this_o malignant_a disposition_n in_o the_o air_n may_v probable_o be_v in_o great_a part_n impute_v to_o some_o kind_n of_o subterraneal_a expiration_n i_o be_o prone_a to_o think_v and_o that_o chief_o upon_o two_o account_n the_o first_o thing_n that_o induce_v i_o to_o this_o conjecture_n be_v that_o not_o any_o of_o the_o several_a cause_n to_o which_o the_o plague_n be_v wont_a to_o be_v impute_v seem_v to_o i_o to_o be_v sufficient_a those_o that_o fetch_v it_o from_o the_o malevolent_a aspect_n and_o influence_n of_o the_o celestial_a light_n beside_o that_o they_o suppose_v some_o thing_n very_o difficult_a to_o be_v prove_v have_v recourse_n to_o agent_n too_o remote_a too_o general_a and_o too_o indeterminate_a to_o be_v acquiesce_v in_o as_o the_o cause_n of_o such_o particular_a symptom_n and_o phaenomena_n as_o oftentimes_o accompany_v pestilence_n and_o as_o for_o those_o other_o sect_n of_o physician_n that_o confident_o derive_v 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of_o i_o he_o tell_v i_o that_o he_o have_v take_v up_o these_o stone_n himself_o name_v the_o place_n to_o i_o which_o be_v not_o very_o far_o off_o and_o that_o he_o observe_v all_o that_o he_o tell_v i_o himself_o and_o more_o than_o once_o or_o twice_o and_o that_o i_o need_v not_o suspect_v as_o i_o seem_v to_o do_v that_o it_o be_v the_o stroke_n employ_v to_o force_v the_o stone_n out_o of_o their_o bed_n that_o make_v they_o break_v for_o beside_o that_o many_o of_o they_o which_o it_o seem_v be_v not_o compress_v enough_o do_v not_o break_v several_a of_o those_o that_o do_v be_v take_v out_o without_o offer_v they_o any_o such_o violence_n as_o that_o their_o burst_v can_v with_o any_o probability_n be_v impute_v to_o it_o chap._n ix_o observat_fw-la viii_o one_o main_a cause_n why_o such_o motion_n as_o we_o speak_v of_o be_v overlook_v be_v that_o we_o be_v scarce_o wont_a to_o take_v notice_n but_o of_o those_o motion_n of_o solid_a body_n wherein_o one_o whole_a body_n drive_v away_o another_o or_o at_o least_o knock_v visible_o against_o it_o whereas_o many_o effect_n proceed_v from_o the_o intestine_a motion_n produce_v by_o the_o external_a agent_n in_o and_o among_o the_o part_n of_o the_o same_o body_n this_o observation_n be_v like_a to_o be_v much_o more_o ready_o understand_v than_o grant_v and_o therefore_o i_o shall_v offer_v by_o way_n of_o proof_n the_o follow_a experiment_n we_o cause_v in_o a_o large_a brass_n stop-cock_n the_o movable_a part_n to_o be_v nimble_o turn_v to_o and_o fro_o in_o the_o contiguous_a cavity_n of_o that_o part_n that_o be_v make_v to_o receive_v it_o in_o that_o part_n of_o the_o instrument_n that_o be_v wont_a to_o be_v keep_v fix_v and_o though_o this_o motion_n of_o the_o key_n be_v make_v only_o by_o the_o bare_a hand_n yet_o in_o a_o short_a time_n the_o mutual_a attrition_n of_o the_o contiguous_a part_n of_o the_o instrument_n make_v so_o brisk_a a_o agitation_n in_o the_o other_o part_n that_o the_o 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experiment_n confirm_v what_o i_o elsewhere_o mention_v of_o the_o dilatation_n of_o metal_n themselves_o by_o heat_n and_o therefore_o i_o proceed_v to_o the_o next_o instance_n this_o be_v afford_v by_o the_o know_a experiment_n of_o pass_v one_o be_v wet_v finger_a upon_o the_o orifice_n of_o a_o drinking-glass_n almost_o fill_v with_o water_n for_o though_o the_o eye_n do_v not_o immediate_o discern_v any_o motion_n that_o by_o reason_n of_o the_o pressure_n of_o the_o finger_n be_v make_v by_o one_o part_n of_o the_o glass_n upon_o another_o yet_o that_o a_o vibrate_v motion_n be_v thereby_o produce_v may_v be_v argue_v by_o the_o dance_n of_o the_o water_n especial_o that_o which_o be_v contiguous_a to_o the_o press_a side_n of_o the_o glass_n by_o which_o it_o be_v oftentimes_o so_o agitate_a that_o numerous_a drop_n be_v make_v to_o leap_v quite_o over_o and_o other_o be_v toss_v up_o to_o a_o good_a height_n into_o the_o air._n and_o that_o there_o may_v be_v considerable_a 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in_o the_o production_n of_o divers_a difficult_a phaenomena_n of_o nature_n that_o be_v wont_a to_o be_v refer_v to_o less_o genuine_a as_o well_o as_o less_o intelligible_a cause_n finis_fw-la a_o experimental_a discourse_n of_o some_o unheeded_a cause_n of_o the_o insalubrity_n and_o salubrity_n of_o the_o air_n be_v a_o part_n of_o a_o intend_a natural_a history_n of_o air_n london_n print_v by_o m._n flesher_n for_o richard_n davis_n bookseller_n in_o oxford_n 1685._o the_o preface_n have_v heretofore_o have_v occasion_n to_o draw_v together_o under_o certain_a head_n divers_a unpublished_a observation_n and_o experiment_n of_o my_o own_o and_o some_o of_o other_o man_n by_o way_n of_o memorial_n for_o a_o natural_a history_n of_o the_o air_n i_o think_v fit_a by_o more_o large_o treat_v of_o two_o or_o three_o of_o the_o subject_n distinct_o mention_v in_o my_o scheme_n of_o title_n to_o give_v a_o semplar_n or_o specimen_fw-la of_o what_o may_v be_v do_v upon_o the_o other_o 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liquor_n that_o be_v necessary_a to_o the_o nutrition_n and_o growth_n of_o plant_n and_o by_o deprave_v those_o juice_n make_v the_o vegetable_n that_o be_v nourish_v by_o they_o unhealthy_a for_o the_o man_n that_o eat_v they_o or_o make_v drink_n of_o they_o and_o these_o noxious_a exhalation_n may_v be_v suppose_v in_o many_o place_n to_o impregnate_n the_o juice_n of_o the_o earth_n much_o more_o copious_o than_o they_o do_v the_o run_n or_o stagnant_a water_n late_o speak_v of_o because_o the_o difficulty_n of_o pervade_v the_o earth_n in_o their_o ascent_n may_v so_o long_o check_v they_o as_o to_o make_v they_o very_o numerous_a in_o a_o small_a space_n and_o perhaps_o make_v they_o convene_v into_o body_n so_o far_o of_o a_o saline_n nature_n as_o to_o be_v dissoluble_a either_o in_o common_a water_n or_o some_o other_o subterraneal_a liquor_n by_o who_o help_n as_o by_o vehicle_n they_o may_v insinuate_v themselves_o into_o the_o root_n of_o plant_n and_o be_v thence_o 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afford_v gold_n be_v as_o it_o be_v gild_v on_o the_o low_a side_n by_o ascend_a exhalation_n of_o a_o golden_a nature_n whether_o this_o be_v true_a or_o no_o i_o shall_v not_o take_v upon_o i_o to_o determine_v but_o i_o remember_v that_o have_v make_v enquiry_n about_o the_o truth_n of_o it_o of_o a_o very_a ingenious_a traveller_n who_o curiosity_n lead_v he_o to_o visit_v heedful_o those_o famous_a mine_n he_o tell_v i_o that_o he_o do_v not_o remember_v he_o have_v observe_v what_o be_v report_v about_o the_o leave_n of_o the_o vine_n but_o he_o know_v very_o well_o that_o at_o tockay_n a_o place_n that_o afford_v the_o famous_a wine_n of_o hungary_n and_o indeed_o the_o best_a i_o have_v drink_v very_o many_o of_o the_o kernel_n of_o the_o grape_n will_v appear_v gild_v over_o as_o it_o be_v with_o leaf_n gold_n to_o what_o have_v be_v already_o discourse_v may_v be_v add_v that_o since_o man_n be_v not_o wont_a to_o feed_v upon_o either_o beast_n or_o bird_n of_o prey_n as_o 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arsenic_n or_o some_o other_o poisonous_a drug_n be_v employ_v as_o preservative_n from_o the_o plague_n against_o which_o i_o doubt_v the_o chief_a succour_n they_o afford_v proceed_v from_o the_o confidence_n or_o fearlesness_n they_o give_v those_o that_o wear_v they_o but_o to_o return_v to_o our_o subterraneal_a effluvia_fw-la since_o there_o be_v divers_a whole_a country_n or_o lesser_a place_n that_o be_v either_o altogether_o or_o in_o great_a part_n free_a from_o this_o or_o that_o particular_a disease_n as_o in_o several_a part_n of_o scotland_n from_o ague_n especial_o if_o i_o mistake_v not_o quartan_o be_v very_o unfrequent_a insomuch_o that_o a_o learned_a physician_n answer_v i_o that_o in_o divers_a year_n practice_n he_o meet_v not_o with_o above_o three_o or_o four_o and_o in_o several_a large_a region_n of_o the_o east-indies_n notwithstanding_o the_o excessive_a heat_n of_o the_o climate_n the_o plague_n be_v very_o rare_a since_o i_o say_v these_o thing_n be_v so_o it_o seem_v not_o altogether_o improbable_a that_o the_o subterraneal_a steaw_n may_v contribute_v to_o this_o advantage_n by_o impregnate_v both_o the_o air_n the_o earth_n and_o the_o water_n with_o corpuscle_n endow_v with_o quality_n unfriendly_a to_o these_o disease_n which_o seem_v to_o be_v somewhat_o the_o more_o credible_a because_o it_o have_v be_v observe_v that_o some_o vast_a tract_n of_o land_n will_v neither_o breed_v nor_o maintain_v venomous_a creature_n as_o be_v undoubted_o believe_v of_o the_o whole_a kingdom_n of_o ireland_n where_o i_o confess_v i_o neither_o do_v see_v any_o alive_a nor_o meet_v with_o any_o other_o that_o do_v for_o as_o to_o spider_n though_o they_o breed_v in_o that_o country_n where_o i_o have_v see_v many_o of_o they_o and_o sometime_o even_o upon_o irish_a wood_n yet_o they_o be_v unanimous_o believe_v not_o to_o be_v poisonous_a there_o and_o some_o writer_n tell_v we_o how_o true_o i_o know_v not_o of_o some_o other_o country_n to_o which_o they_o affirm_v the_o like_a privilege_n to_o belong_v but_o there_o be_v one_o instance_n afford_v we_o by_o begninus_n who_o travel_v much_o to_o visit_v mine_n which_o if_o it_o be_v strict_o true_a be_v very_o notable_a for_o my_o present_a purpose_n dignum_fw-la admiratione_n est_fw-la say_v he_o quod_fw-la quamvis_fw-la in_o vicinia_fw-la hydriae_fw-la comitatus_fw-la gloriciensis_fw-la ubi_fw-la reperitur_fw-la copiosè_fw-la ☿_o singulis_fw-la ferè_fw-la annis_fw-la lues_fw-la pestifera_fw-la grassatur_fw-la illa_fw-la tamen_fw-la semper_fw-la immunis_fw-la ab_fw-la hac_fw-la manere_fw-la soleat_fw-la idque_fw-la viri_fw-la provectae_fw-la aetatis_fw-la se_fw-la observasse_fw-la &_o à _fw-la majoribus_fw-la suis_fw-la accepisse_fw-la mihi_fw-la sanctè_fw-la confirmârunt_fw-la to_o which_o i_o shall_v add_v the_o testimony_n of_o the_o learned_a michael_n mayerus_n who_o pronounce_v mercury_n to_o be_v a_o alexipharmacum_fw-la against_o divers_a disease_n and_o particular_o the_o plague_n if_o i_o do_v not_o suspect_v by_o his_o way_n
foam_n of_o the_o morbific_a effluvia_fw-la be_v soon_o destroy_v or_o spend_v whereas_o some_o other_o may_v continue_v long_o upon_o the_o stage_n as_o have_v under_o ground_n more_o settle_v and_o durable_a cause_n to_o maintain_v they_o which_o last_o part_n of_o the_o observation_n may_v be_v illustrate_v by_o what_o happen_v in_o calabria_n which_o province_n though_o it_o have_v be_v observe_v to_o have_v acquire_v within_o these_o two_o or_o three_o age_n the_o faculty_n of_o produce_v manna_n upon_o certain_a tree_n est_fw-la yet_o this_o great_a change_n though_o sudden_a enough_o have_v it_o seem_v such_o stable_a cause_n as_o well_o as_o of_o great_a extent_n that_o it_o have_v last_v several_a score_n of_o year_n and_o continue_v in_o that_o country_n to_o this_o day_n i_o be_o not_o ignorant_a that_o the_o whole_a doctrine_n propound_v in_o the_o four_o proposition_n about_o the_o insalubrity_n of_o the_o air_n be_v not_o at_o all_o comfortable_a either_o to_o patient_n or_o physician_n but_o important_a theory_n deserve_v to_o be_v inquire_v into_o and_o if_o true_a to_o be_v deliver_v though_o we_o can_v wish_v they_o be_v untrue_a and_o judicious_a man_n rather_o thank_v than_o blame_v those_o that_o have_v give_v we_o account_n of_o latent_fw-la or_o unsuspected_a though_o perhaps_o irremediable_a cause_n of_o disease_n and_o of_o death_n or_o have_v record_v the_o history_n of_o some_o poison_n whereof_o the_o true_a antidote_n be_v yet_o unknown_a uncommon_a notion_n about_o disease_n may_v serve_v to_o enlarge_v the_o physician_n mind_n and_o excite_v his_o attention_n and_o curiosity_n and_o beside_o that_o they_o may_v keep_v he_o from_o too_o obstinate_o persist_v in_o the_o use_n of_o receive_a medicine_n though_o unsuccessfull_a upon_o a_o supposition_n that_o the_o disease_n can_v have_v no_o other_o cause_n than_o those_o wont_a to_o be_v assign_v it_o by_o classic_a author_n beside_o this_o i_o say_v i_o do_v not_o despair_v but_o that_o either_o the_o sagacity_n or_o fortune_n of_o this_o inquisitive_a age_n or_o at_o least_o of_o posterity_n may_v by_o the_o blessing_n of_o god_n be_v happy_a enough_o to_o find_v proper_a remedy_n even_o for_o those_o disease_n that_o proceed_v from_o subterranean_a effluvia_fw-la when_o once_o by_o proper_a sign_n they_o shall_v be_v distinct_o discover_v of_o which_o power_n of_o appropriate_v remedy_n i_o have_v know_v some_o instance_n as_o to_o the_o very_a bad_a symptom_n produce_v by_o antimonial_a and_o some_o other_o mineral_n fume_n some_o of_o the_o point_n discourse_v of_o under_o the_o four_o proposition_n be_v of_o affinity_n enough_o to_o paradox_n to_o have_v need_n of_o be_v illustrate_v or_o confirm_v by_o observation_n and_o experiment_n and_o therefore_o have_v accidental_o retrieve_v some_o of_o this_o last_o name_v sort_n i_o shall_v venture_v to_o subjoin_v they_o as_o a_o specimen_fw-la though_o without_o transition_n or_o application_n but_o just_a as_o i_o find_v they_o throw_v together_o in_o one_o loose_a sheet_n wherein_o i_o light_v on_o they_o but_o it_o be_v time_n to_o conclude_v with_o the_o recital_n of_o the_o promise_a experiment_n which_o i_o will_v immediate_o do_v but_o that_o i_o hold_v it_o fit_a to_o premise_v by_o way_n of_o introduction_n to_o they_o that_o i_o hope_v the_o thing_n hitherto_o discourse_v will_v appear_v much_o the_o more_o probable_a if_o we_o shall_v prove_v by_o experiment_n that_o which_o seem_v much_o less_o likely_a than_o any_o thing_n we_o have_v above_o deliver_v namely_o that_o metal_n complete_o form_v and_o malleable_a may_v be_v elevate_v into_o the_o air_n and_o that_o perhaps_o without_o any_o great_a violence_n of_o fire_n in_o the_o form_n of_o exhalation_n and_o vapour_n the_o single_o invisible_a corpuscle_n still_o retain_v their_o metalline_a nature_n this_o at_o least_o as_o to_o some_o metal_n i_o have_v endeavour_v to_o prove_v in_o another_o tract_n entitle_v a_o paradox_n about_o the_o fuel_n of_o flame_n but_o because_o that_o discourse_n be_v never_o publish_v i_o will_v here_o set_v down_o two_o or_o three_o experiment_n not_o mention_v that_o i_o remember_v in_o it_o which_o i_o do_v the_o more_o willing_o because_o it_o may_v be_v a_o thing_n of_o no_o small_a moment_n in_o physic_n if_o it_o be_v show_v that_o fix_v and_o solid_a body_n such_o as_o metal_n be_v may_v by_o art_n be_v reduce_v into_o such_o minute_n corpuscle_n that_o without_o lose_v their_o nature_n and_o all_o their_o property_n they_o may_v become_v part_n of_o fume_n or_o perhaps_o of_o invisible_a vapour_n or_o even_o of_o flame_n itself_o particular_n belong_v to_o the_o ivth_o proposition_n exper._n i._n we_o take_v three_o part_n or_o pound_n of_o dantsic_n vitriol_n which_o be_v blue_a and_o somewhat_o partake_v of_o copper_n and_o two_o part_n or_o pound_n of_o good_a sea-salt_n these_o be_v very_o well_o powder_v and_o mix_v be_v distil_v with_o a_o strong_a naked_a fire_n to_o force_v out_o all_o that_o can_v be_v drive_v over_o and_o by_o this_o mean_v we_o not_o only_o obtain_v a_o spirit_n of_o salt_n of_o a_o manifest_o bluish_a colour_n but_o there_o ascend_v also_o a_o considerable_a quantity_n of_o powder_n which_o be_v shake_v with_o the_o liquor_n settle_v at_o the_o bottom_n of_o it_o in_o the_o form_n of_o a_o powder_n which_o be_v judge_v to_o consist_v of_o corpuscle_n of_o a_o cupreous_a nature_n and_o perhaps_o also_o of_o some_o of_o a_o martial_a nature_n but_o i_o unhappy_o neglect_v the_o opportunity_n of_o examine_v this_o powder_n which_o come_v up_o in_o quantity_n enough_o to_o have_v serve_v for_o various_a trial_n exper._n ii_o by_o substitute_v english_a vitriol_n which_o be_v green_a and_o be_v much_o more_o abundant_a in_o iron_n than_o that_o of_o dantsic_n and_o proceed_v in_o other_o respect_v as_o in_o the_o former_a process_n we_o obtain_v a_o very_a yellow_a spirit_n with_o a_o considerable_a quantity_n of_o a_o yellowish_a powder_n that_o be_v guess_v to_o be_v a_o kind_n of_o crocus_n martis_n exper._n iii_o we_o take_v very_o thin_a plate_n of_o copper_n and_o cast_v they_o into_o a_o retort_n upon_o a_o equal_a or_o a_o double_a weight_n for_o we_o do_v not_o always_o use_v the_o same_o of_o good_a mercury_n sublimate_n and_o lute_v on_o the_o receiver_n give_v a_o fire_n by_o degree_n for_o several_a hour_n by_o which_o mean_n we_o usual_o obtain_v some_o run_a mercury_n which_o seem_v to_o be_v very_o well_o purify_v and_o be_v perhaps_o also_o impregnate_v together_o with_o some_o sublimate_n that_o have_v not_o fasten_v upon_o the_o copper_n and_o at_o the_o bottom_n of_o the_o retort_n we_o have_v good_a store_n of_o a_o ponderous_a and_o brittle_a substance_n that_o do_v not_o look_v at_o all_o like_a a_o metal_n but_o rather_o like_o something_o of_o a_o gummous_a or_o resinous_n nature_n be_v also_o fusible_a and_o inflammable_a almost_o like_o seal_v wax_n this_o have_v not_o opportunity_n to_o prosecute_v the_o experiment_n at_o home_n i_o put_v into_o the_o hand_n of_o a_o industrious_a physician_n that_o be_v earnest_a with_o i_o to_o impart_v to_o he_o the_o process_n and_o let_v he_o pursue_v it_o for_o i_o he_o according_a to_o my_o direction_n expose_v this_o metalline_a rosin_n if_o i_o may_v so_o call_v it_o gross_o beat_v to_o the_o free_a air_n where_o it_o do_v according_a to_o expectation_n in_o a_o short_a time_n change_v colour_n and_o turn_v to_o a_o kind_n of_o verdegreece_n which_o be_v dissolve_v in_o good_a spirit_n of_o salt_n give_v a_o solution_n of_o a_o very_a lovely_a green_a colour_n this_o be_v slow_o distil_v ad_fw-la siccitatem_fw-la yield_v but_o a_o very_a weak_a and_o phlegmatic_a liquor_n and_o the_o caput_fw-la mortuum_n be_v again_o dissolve_v in_o fresh_a spirit_n and_o the_o menstruum_fw-la abstract_v as_o before_o this_o be_v do_v several_a time_n till_o the_o matter_n be_v so_o impregnate_v that_o the_o menstruum_fw-la be_v draw_v off_o from_o it_o come_v over_o as_o strong_a almost_o as_o when_o it_o be_v put_v on_o this_o do_v the_o thus_o impregnated_a verdegreece_n be_v diligent_o mingle_v with_o tripoli_n or_o some_o such_o insipid_a and_o fix_a additament_n and_o distil_v with_o a_o strong_a fire_n by_o which_o mean_v it_o afford_v good_a store_n of_o a_o liquor_n colourless_a like_o common_a water_n which_o make_v the_o physician_n suppose_v the_o experiment_n have_v miscarry_v till_o i_o have_v drop_v into_o it_o a_o colourless_a liquor_n namely_o spirit_n of_o hartshorn_n or_o of_o sal-armoniac_a he_o be_v much_o and_o delightful_o surprise_v to_o find_v it_o present_o disclose_v a_o deep_a and_o lovely_a blue_a colour_n what_o afterward_o become_v of_o this_o odd_a spirit_n i_o need_v not_o here_o declare_v what_o have_v be_v say_v be_v sufficient_a to_o show_v that_o corpuscle_n of_o copper_n may_v be_v elevate_v in_o the_o form_n of_o