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earth_n die_v endeavour_v great_a 14 3 2.1077 3 false
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ID Title Author Corrected Date of Publication (TCP Date of Publication) STC Words Pages
A60281 The hydrostaticks, or, The weight, force, and pressure of fluid bodies, made evident by physical, and sensible experiments together vvith some miscellany observations, the last whereof is a short history of coal, and of all the common, and proper accidents thereof, a subject never treated of before / by G.S. Sinclair, George, d. 1696. 1672 (1672) Wing S3854; ESTC R38925 208,492 331

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zodiac_n than_o in_o another_o for_o in_o summer_n when_o he_o be_v further_a from_o the_o earth_n he_o go_v slowly_a back_o in_o the_o ecliptic_a than_o in_o winter_n when_o he_o be_v near_a to_o it_o the_o second_o cause_n which_o be_v true_o the_o far_a great_a be_v this_o because_o in_o the_o diurnal_a motion_n of_o the_o sun_n equal_a part_n of_o the_o aequator_fw-la do_v not_o answer_v to_o equal_a part_n of_o the_o zodiac_n hence_o it_o follow_v that_o if_o the_o natural_a day_n be_v not_o equal_a among_o themselves_o the_o hour_n must_v be_v unequal_a also_o but_o this_o be_v not_o considerable_a by_o help_v of_o such_o a_o tub_n place_v in_o a_o dark_a room_n it_o be_v easy_a when_o the_o sun_n be_v under_o eclipse_n to_o enumerat_v distinct_o the_o digit_n eclipse_v likewise_o if_o you_o take_v out_o the_o object_n glass_n and_o cover_v a_o hole_n in_o the_o window_n board_n with_o it_o you_o shall_v see_v distinct_o upon_o a_o white_a wall_n the_o species_n and_o true_a representation_n of_o all_o object_n without_o and_o by_o compare_v the_o quantity_n of_o the_o object_n without_o with_o the_o quantity_n of_o it_o within_o you_o may_v know_v the_o distance_n of_o it_o from_o the_o window_n though_o it_o be_v many_o mile_n for_o as_o the_o one_o quantity_n be_v to_o the_o other_o so_o be_v the_o distance_n between_o the_o glass_n and_o the_o object_n on_o the_o wall_n to_o the_o distance_n between_o the_o glass_n and_o the_o object_n without_o it_o may_v be_v inquire_v whether_o or_o not_o the_o retrograde_a as_o well_o as_o the_o diurnal_a motion_n of_o any_o of_o the_o planet_n may_v be_v discern_v in_o minute_n or_o second_n by_o the_o help_n of_o a_o long_a telescope_n in_o answer_n to_o this_o we_o must_v suppose_v the_o planet_n only_o to_o have_v a_o retrograde_a motion_n and_o consequent_o to_o move_v slow_o from_o west_n to_o east_n saturn_n once_o in_o 29_o year_n or_o 30_o to_o run_v about_o the_o zodiac_n jupiter_n in_o 12_o mars_n in_o 2_o year_n the_o sun_n in_o one_o year_n venus_n and_o mercury_n in_o less_o time_n and_o last_o the_o moon_n in_o a_o month_n now_o i_o say_v it_o be_v impossible_a by_o the_o long_a tub_n that_o the_o great_a artist_n can_v make_v to_o discern_v the_o motion_n of_o the_o inferior_a planet_n far_o less_o the_o motion_n of_o the_o superior_a either_o in_o minute_n or_o in_o second_o and_o that_o by_o reason_n of_o the_o great_a tardity_n and_o slowness_n of_o the_o motion_n notwithstanding_o of_o this_o i_o be_o induce_v to_o think_v that_o the_o retrograde_a motion_n of_o the_o moon_n may_v be_v discern_v at_o least_o in_o minute_n for_o evince_v of_o this_o let_v we_o suppose_v which_o be_v true_a that_o the_o sun_n run_v from_o east_n to_o west_n half_a a_o degree_n in_o two_o minute_n of_o time_n see_v in_o a_o hour_n he_o run_v 15_o degree_n next_o that_o the_o moon_n go_v about_o the_o zodiac_n in_o 27_o day_n and_o 7_o hour_n namely_o from_o that_o same_o point_n to_o that_o point_n again_o and_o consequent_o run_v back_o every_o day_n 13_o degree_n and_o about_o 10_o minute_n by_o this_o account_n she_o must_v retrograde_v half_o a_o degree_n and_o about_o 2_o minute_n of_o a_o degree_n every_o hour_n the_o sun_n than_o run_v half_o a_o degree_n in_o two_o minute_n and_o the_o moon_n half_a a_o degree_n in_o 60_o minute_n therefore_o the_o moon_n must_v be_v 30_o time_n slow_a in_o her_o retrograde_a motion_n than_o the_o sun_n be_v in_o his_o diurnal_a motion_n let_v we_o suppose_v next_o as_o i_o observe_v with_o a_o tub_n 12_o foot_n long_o that_o the_o image_n of_o the_o sun_n run_v the_o eight_o part_n of_o a_o inch_n every_o second_o and_o consequent_o seven_o inch_n and_o a_o half_a in_o a_o minute_n then_o must_v the_o image_n of_o the_o moon_n with_o that_o same_o telescope_n run_v the_o thirty_o part_n of_o seven_o inch_n and_o a_o half_a in_o a_o minute_n see_v she_o run_v 30_o time_n slowly_o therefore_o in_o every_o minute_n of_o time_n she_o 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provide_v always_o that_o the_o sun_n run_v the_o eight_o part_n of_o a_o inch_n in_o a_o second_o observation_n iu._n upon_o tuesday_n the_o 19_o of_o july_n 1670_o the_o follow_a experiment_n be_v make_v in_o the_o middle_a march_n between_o scotland_n and_o england_n there_o be_v a_o long_a tract_n of_o hill_n that_o run_v from_o flowdon_n many_o mile_n south_n and_o south-west_n among_o the_o which_o the_o mountain_n cheviot_n be_v famous_a beyond_o and_o conspicuous_a above_o all_o the_o rest_n for_o altitude_n from_o who_o top_n a_o man_n may_v discern_v with_o one_o turn_v of_o his_o eye_n the_o whole_a sea-coast_n from_o newcastle_n to_o berwick_n much_o of_o northumberland_n and_o very_o many_o league_n into_o the_o great_a german_a ocean_n the_o whole_a mers_n and_o teviotdale_n from_o the_o foot_n of_o tweed_n to_o very_o near_o the_o head_n of_o it_o lauderdale_n and_o lammer-moor_n and_o pentland-hill_n above_o edinburgh_n the_o north_n side_n of_o this_o mountain_n be_v 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where_o we_o find_v the_o altitude_n of_o the_o mercurial_a cylinder_n 27_o inch_n and_o a_o half_a the_o air_n be_v dry_a and_o clear_a and_o no_o wind_n in_o our_o valley-countreys_n near_o to_o the_o sea-coast_n in_o such_o wether_n we_o find_v the_o altitude_n 29_o inch_n and_o a_o half_a when_o this_o difference_n be_v find_v care_n be_v take_v to_o seal_v up_o close_o with_o bee-wax_n mix_v with_o turpentine_n the_o orifice_n of_o the_o vessel_n that_o contain_v the_o stagnant_a mercury_n and_o through_o which_o the_o end_n of_o the_o pipe_n go_v down_o this_o be_v do_v with_o as_o great_a exactness_n as_o can_v be_v it_o be_v carry_v to_o the_o foot_n of_o the_o mountain_n in_o a_o frame_n of_o wood_n make_v on_o purpose_n and_o there_o open_v the_o mouth_n of_o the_o vessel_n we_o find_v the_o mercury_n to_o rise_v a_o inch_n and_o a_o quarter_n high_o than_o it_o be_v the_o reason_n of_o this_o strange_a phenomenon_n must_v be_v this_o namely_o a_o great_a pressure_n of_o the_o air_n at_o the_o foot_n of_o the_o hill_n than_o upon_o the_o top_n even_o as_o there_o be_v a_o great_a pressure_n of_o water_n in_o a_o surface_n 40_o fathom_n deep_a than_o in_o a_o surface_n 20_o fathom_n deep_a it_o be_v not_o to_o be_v doubt_v but_o if_o the_o root_n of_o the_o mountain_n have_v be_v as_o low_o as_o the_o sea_n coast_n or_o as_o the_o surface_n of_o tweed_n at_o kelso_n the_o mercurial_a cylinder_n will_v have_v be_v high_a this_o way_n of_o observe_v seem_v to_o be_v better_a than_o the_o common_a for_o while_o the_o baroscope_n be_v carry_v up_o and_o down_o the_o hill_n without_o stop_v the_o orifice_n of_o the_o vessel_n that_o contain_v the_o stagnant_a mercury_n the_o cylinder_n make_v such_o reciprocation_n