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body_n earth_n place_n zone_n 20 3 13.0461 5 false
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ID Title Author Corrected Date of Publication (TCP Date of Publication) STC Words Pages
A56139 An account of a portable barometer, with reasons and rules for the use of it how to weigh the air, measure its height, and foretell all the alteration of weather, the constitution of the atmosphere, and how the effluvia keep off the airs gravitation : with a new account and experiments, how rain, snow, winds, frost, thunder, lightning, hurricans and tornados are produced, and an inquiry, whether the planetary beams or influence can cause an alteration of weather, to be foretold by them : with a sensible demonstration of their influences and the insufficiency of all hygroscopes, thermometers, and other inventions, to discover the alterations of weather by : and lastly, rules and experiments for the certain knowledge of all the alterations of weather, both in quantity and quality / by Gust. Parker, Med. Parker, Gustavus. 1699 (1699) Wing P391; ESTC R1399 37,634 125

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considerable_a alteration_n though_o there_o be_v no_o rain_n and_o be_v easy_o discover_v by_o several_a hygroscope_n by_o their_o surprise_a gravity_n as_o i_o shall_v show_v in_o the_o ten_o chapter_n thus_o our_o aeolian_a effluvia_fw-la do_v not_o only_o keep_v off_o the_o gravitation_n of_o the_o air_n but_o be_v the_o cause_n of_o the_o variation_n of_o its_o weight_n chap._n ii_o how_o rain_n and_o snow_n be_v generate_v and_o produce_v and_o why_o they_o make_v a_o cylinder_n of_o air_n light_a and_o yet_o any_o other_o particular_a parcel_n of_o air_n much_o heavy_a what_o i_o have_v to_o say_v upon_o the_o content_n of_o this_o chapter_n be_v not_o of_o the_o prime_a cause_n of_o rain_n and_o snow_n but_o only_o a_o short_a account_n of_o their_o generation_n and_o production_n in_o relation_n to_o their_o affection_n of_o the_o atmosphere_n for_o the_o better_a understanding_n of_o the_o nature_n and_o use_n of_o the_o barometer_n rain_n and_o snow_n then_o be_v generate_v of_o the_o same_o matter_n but_o for_o distinction_n i_o will_v first_o give_v a_o account_n of_o rain_n and_o then_o of_o snow_n rain_n be_v generate_v of_o the_o effluvium_n that_o constitute_v our_o terraqueous_a atmosphere_n be_v by_o their_o emancipate_v motion_n in_o a_o certain_a part_n thereof_o drive_v towards_o the_o extremity_n of_o the_o sun_n reflection_n into_o a_o cool_a region_n they_o soon_o condense_a in_o some_o little_a part_n first_o which_o condensation_n immediate_o make_v room_n for_o the_o natural_a elasticity_n of_o the_o air_n which_o as_o soon_o begin_v to_o carry_v a_o long_a with_o it_o all_o the_o other_o effluvia_fw-la round_o about_o to_o the_o first_o condensation_n where_o be_v by_o this_o elastic_a force_n first_o bring_v from_o all_o the_o neighbour_a part_n the_o effluvious_a air_n than_o run_v down_o by_o its_o own_o weight_n and_o elasticity_n from_o every_o side_n to_o a_o vast_a extent_n where_o be_v heap_v and_o crowd_v together_o they_o not_o only_o fall_v by_o their_o innate_a gravity_n but_o by_o the_o same_o motion_n of_o air_n which_o now_o be_v wind_n be_v send_v down_o sometime_o with_o extreme_a violence_n and_o thus_o not_o only_o the_o neighbour_a atom_n be_v condense_v in_o a_o little_a cloud_n and_o small_a shower_n but_o the_o whole_a hemispherical_a effluvia_fw-la be_v drive_v and_o draw_v together_o and_o discharge_v upon_o a_o whole_a country_n or_o national_a horizon_n oftentimes_o till_o the_o whole_a half_a atmosphere_n be_v empty_v of_o all_o those_o vapour_n and_o then_o have_v make_v a_o current_n from_o every_o part_n beyond_o all_o the_o other_o emanation_n that_o be_v raise_v in_o other_o part_n of_o the_o world_n as_o ready_o flow_v hither_o to_o be_v discharge_v here_o in_o continual_a rain_n for_o a_o long_a time_n together_o till_o by_o a_o piarticule_a condensation_n in_o some_o other_o place_n the_o course_n be_v alter_v and_o the_o current_n turn_v and_o then_o it_o may_v be_v dry_a as_o long_o the_o continual_a stream_n of_o atom_n be_v carry_v away_o to_o other_o place_n to_o be_v discharge_v there_o the_o difference_n between_o storm_n or_o a_o little_a wet_a and_o last_a settle_a rain_n be_v that_o in_o the_o first_o emancipate_v atom_n be_v not_o so_o thick_a or_o copious_a as_o at_o other_o time_n in_o their_o elevate_a motion_n become_v bound_v by_o particular_a eddy_n of_o air_n which_o drive_v they_o so_o close_o together_o that_o by_o this_o mean_v they_o be_v form_v into_o cloud_n and_o by_o their_o be_v drive_v yet_o close_o together_o by_o the_o power_n and_o strength_n of_o these_o eddy_n and_o the_o addition_n of_o fresh_a matter_n the_o small_a atom_n fall_v so_o fast_o one_o into_o another_o by_o cold_a and_o compressure_n that_o very_o large_a drop_n be_v immediate_o produce_v and_o send_v down_o with_o more_o or_o less_o violence_n according_a to_o the_o disposition_n of_o their_o motion_n the_o season_n and_o air._n but_o in_o settle_a rain_n the_o effluvious_a vapour_n have_v for_o some_o time_n before_o be_v continual_o fill_v our_o hemesphere_n from_o all_o part_n without_o any_o discharge_n in_o a_o still_a and_o quiet_a manner_n without_o disturb_v the_o air_n at_o last_o receive_v a_o condensation_n as_o above_o in_o some_o particular_a part_n which_o immediate_o make_v way_n for_o the_o air_n elasticity_n but_o be_v now_o every_o where_o fill_v which_o these_o vapour_n can_v unbend_v or_o move_v so_o fast_o yet_o continual_o bring_v the_o neighbour_a vapour_n and_o so_o be_v gentle_o and_o continual_o send_v down_o as_o long_o as_o they_o last_o snow_n be_v generate_v of_o the_o same_o effluvium_n or_o small_a piece_n of_o moisture_n when_o the_o sun_n be_v at_o a_o convenient_a distance_n and_o the_o country_n proper_a with_o hill_n mountain_n and_o latitude_n the_o calorifick_a beam_n be_v easy_o hinder_v by_o they_o or_o not_o tend_v far_o enough_o for_o the_o other_o together_o with_o the_o assistance_n of_o the_o contrary_a motion_n or_o interposition_n of_o the_o beam_n of_o the_o other_o star_n or_o obstruct_v by_o the_o numerous_a effluvia_fw-la that_o murales_fw-la or_o or_o wall_n the_o whole_a atmosphere_n or_o by_o contrary_a currant_n of_o air_n or_o wind_n and_o the_o heat_n be_v thus_o or_o any_o other_o way_n keep_v off_o and_o the_o effluvious_a vapour_n continue_v their_o pneumatick_a motion_n without_o any_o great_a pressure_n they_o be_v not_o condense_v into_o drop_n but_o be_v freeze_v in_o their_o own_o shape_n in_o some_o little_a part_n first_o which_o be_v quick_o extend_v to_o all_o the_o rest_n by_o the_o frigorifick_a saline_n particl_v as_o they_o use_v to_o tell_v we_o universal_o disperse_v and_o mix_v with_o these_o atom_n but_o rather_o by_o the_o former_a privation_n as_o will_v be_v further_o demonstrate_v in_o the_o 6_o chapter_n then_o be_v drive_v a_o little_a close_o they_o fall_v by_o their_o own_o weight_n in_o big_a or_o lesser_a flake_n and_o with_o more_o or_o less_o drive_v according_a as_o the_o motion_n cold_a and_o pressure_n be_v then_o as_o for_o hail_o that_o be_v seldom_o any_o other_o way_n than_o in_o storm_n and_o be_v a_o kind_n of_o half_a freeze_a snow_n and_o rain_n mix_v together_o the_o manner_n of_o its_o generation_n and_o production_n may_v be_v easy_o conceive_v by_o the_o account_n i_o have_v give_v of_o rain_n and_o snow_n with_o better_a satisfaction_n than_o what_o they_o use_v to_o tell_v we_o of_o the_o drop_n freeze_v after_o they_o fall_v from_o the_o cloud_n which_o be_v almost_o impossible_a but_o this_o be_v not_o so_o direct_o to_o my_o purpose_n i_o shall_v say_v no_o more_o of_o it_o but_o only_o demonstrate_v how_o rain_n and_o snow_n which_o thus_o thicken_v and_o fill_v the_o air_n yet_o make_v a_o cylinder_n thereof_o much_o light_a but_o any_o other_o particular_a parcel_n of_o air_n much_o heavy_a the_o reason_n why_o snow_n and_o rain_n make_v a_o cylinder_n of_o air_n light_a be_v that_o the_o effluvious_a vapour_n that_o constitute_v the_o atmosphere_n and_o of_o which_o it_o consist_v be_v so_o very_o numerous_a from_o every_o part_n of_o matter_n and_o so_o constant_o and_o powerful_o send_v out_o that_o they_o not_o only_o make_v particular_a stream_n from_o the_o more_o fluid_a part_n but_o a_o universal_a stream_n from_o the_o whole_a globe_n of_o earth_n and_o water_n and_o all_o other_o consistent_a body_n whatever_o this_o universal_a stream_n or_o flood_n of_o vapour_n be_v thus_o unite_v in_o all_o part_n of_o the_o world_n make_v a_o entire_a screen_n of_o condense_a or_o thicken_v matter_n to_o a_o great_a thickness_n be_v near_o a_o thousand_o time_n more_o solid_a than_o air_n before_o they_o appear_v in_o cloud_n and_o therefore_o must_v needs_o keep_v off_o or_o stop_v the_o air_n penetration_n and_o thereby_o its_o gravitation_n which_o yet_o do_v not_o require_v a_o general_a rain_n or_o snow_n for_o a_o little_a that_o come_v by_o particular_a current_n or_o eddy_n in_o storm_n will_v do_v it_o for_o they_o be_v of_o no_o great_a height_n want_v no_o great_a extent_n to_o hinder_v both_o the_o direct_a and_o collateral_a pressure_n of_o the_o air_n as_o have_v be_v observe_v by_o common_a barometer_n in_o a_o little_a distance_n thus_o the_o ethereal_a particle_n be_v always_o hinder_v by_o these_o emanation_n at_o all_o time_n but_o much_o more_o in_o wet_a than_o in_o dry_a weather_n and_o the_o near_o the_o earth_n surface_n the_o more_o they_o be_v obstruct_v as_o appear_v in_o the_o little_a height_n of_o small_a hill_n by_o the_o same_o barometer_n so_o that_o it_o be_v impossible_a a_o cylinder_n of_o air_n shall_v weigh_v so_o much_o in_o wet_a as_o it_o do_v in_o dry_a weather_n which_o i_o shall_v now_o demonstrate_v by_o experiment_n also_o experiment_n in_o weigh_v the_o air._n in_o weigh_v the_o air_n with_o the_o portable_a barometer_n