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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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breathe_v in_o with_o the_o air_n in_o respiration_n or_o carry_v up_o and_o down_o by_o the_o blood_n or_o other_o liquor_n of_o the_o body_n may_v pass_v by_o other_o part_n of_o it_o without_o do_v they_o any_o sensible_a harm_n and_o attacking_z this_o or_o that_o determinate_a part_n produce_v there_o some_o disease_n such_o as_o the_o fabric_n and_o situation_n of_o that_o part_n peculiar_o dispose_v it_o to_o be_v affect_v with_o and_o i_o shall_v add_v on_o this_o occasion_n that_o in_o our_o hypothesis_n we_o may_v render_v a_o probable_a reason_n why_o in_o some_o epidemical_a disease_n some_o person_n may_v escape_v much_o better_a than_o other_o that_o seem_v likely_a to_o be_v at_o best_a as_o obnoxious_a to_o they_o without_o a_o recourse_n to_o the_o peculiar_a constitution_n of_o the_o body_n of_o differ_v person_n for_o it_o may_v be_v conjecture_v that_o the_o noxious_a corpuscle_n that_o infest_v the_o air_n may_v especial_o in_o windy_a weather_n be_v very_o 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affirmative_a part_n of_o the_o question_n be_v not_o improbable_a it_o appear_v that_o by_o the_o intermixture_n of_o adventitious_a corpuscle_n with_o the_o former_o pestilential_a air_n it_o be_v so_o alter_v and_o correct_v that_o within_o one_o day_n or_o two_o if_o not_o within_o a_o lesser_a compass_n of_o time_n there_o be_v a_o stop_v put_v to_o the_o progress_n of_o the_o plague_n that_o in_o that_o favourable_a time_n of_o year_n namely_o about_o the_o middle_n of_o summer_n scarce_o ever_o miss_v of_o rage_v in_o that_o populous_a city_n and_o which_o be_v more_o admirable_a these_o sanative_a corpuscle_n if_o i_o may_v so_o call_v they_o operate_v so_o powerful_o that_o of_o those_o that_o be_v already_o seize_v by_o that_o fatall_a of_o disease_n the_o plague_n few_o or_o none_o die_v of_o it_o after_o once_o these_o antidotal_a particle_n have_v sufficient_o impregnate_v the_o air._n i_o confess_v so_o great_a and_o sudden_a a_o change_n be_v very_o wonderful_a and_o i_o shall_v scarce_o think_v it_o credible_a if_o i_o have_v not_o have_v the_o mean_n and_o curiosity_n to_o inquire_v about_o it_o of_o divers_a person_n some_o of_o they_o very_o intelligent_a that_o either_o curious_o visit_v or_o also_o make_v some_o considerable_a stay_n in_o that_o great_a city_n and_o find_v they_o agree_v in_o the_o main_a about_o the_o truth_n of_o the_o matter_n of_o fact_n which_o be_v much_o confirm_v to_o i_o by_o so_o eminent_a a_o testimony_n as_o that_o of_o the_o learned_a prosper_n alpinus_n who_o for_o several_a year_n practise_v physic_n in_o grand_a cairo_n and_o as_o a_o eye-witness_n deliver_v what_o he_o relate_v more_o authentical_o as_o well_o as_o more_o particular_o than_o any_o i_o have_v meet_v with_o and_o though_o he_o endeavour_v to_o give_v several_a reason_n of_o this_o strange_a and_o sudden_a cessation_n of_o the_o