a_o light_n to_o the_o longitude_a or_o the_o use_n of_o a_o instrument_n call_v the_o seaman_n director_n speedy_o resolve_v all_o astronomical_a case_n and_o question_n concern_v the_o sun_n moon_n and_o star_n with_o several_a proposition_n whereby_o seaman_n may_v find_v at_o what_o meridian_n and_o longitude_n they_o be_v at_o in_o all_o part_n of_o the_o world_n publish_a for_o the_o advance_v of_o navigation_n by_o robert_n theaker_n license_v june_n 28._o 1665._o roger_n l'estrange_n london_n print_v by_o william_n godbid_v for_o william_n fisher_n at_o the_o postern-gate_n near_o tower-hill_n 1665._o the_o content_n the_o description_n of_o the_o upper_a moving-sphere_n or_o plain_n represent_v the_o celestial_a globe_n pag._n 3._o have_v the_o day_n of_o the_o month_n know_v to_o find_v the_o sun_n declination_n his_o place_n sign_n and_o degree_n in_o the_o ecliptic_a and_o his_o right_a ascension_n in_o degree_n and_o minute_n or_o in_o hour_n and_o minute_n p._n 5._o the_o sun_n place_n in_o the_o ecliptic_a be_v know_v to_o find_v the_o hour_n and_o minute_n of_o the_o sun_n be_v rise_v or_o set_v any_o day_n of_o the_o year_n p._n 6._o to_o find_v any_o fix_a star_n declination_n right_a ascension_n in_o degree_n and_o minute_n or_o in_o hour_n and_o minute_n his_o place_n sign_n and_o degree_n or_o longitude_n in_o the_o ecliptic_a and_o day_n of_o the_o month_n belong_v to_o that_o star_n p._n 8._o to_o find_v every_o day_n in_o the_o year_n when_o any_o of_o the_o fix_a star_n come_v to_o the_o south_n p._n 10._o to_o find_v every_o day_n in_o the_o year_n when_o any_o of_o the_o fix_a star_n rise_v or_o set_v p._n 11._o to_o find_v the_o sun_n be_v rise_v or_o set_v the_o same_o way_n as_o you_o find_v the_o star_n rise_v or_o set_v p._n 12._o to_o find_v the_o sun_n altitude_n every_o day_n of_o the_o year_n when_o he_o come_v to_o the_o meridian_n p._n 14._o to_o find_v every_o day_n how_o many_o degree_n the_o sun_n or_o star_n dip_v or_o go_v under_o the_o horizon_n at_o midnight_n also_o to_o find_v the_o amplitude_n of_o the_o sun_n or_o star_n every_o day_n in_o the_o year_n at_o their_o rise_n or_o set_v p._n 15._o to_o find_v at_o all_o time_n when_o the_o north_n star_n be_v direct_o south_n above_o the_o pole_n or_o north_n under_o the_o pole_n p._n 17._o to_o draw_v the_o parallel_n of_o the_o sun_n or_o star_n declination_n and_o thereby_o to_o know_v when_o they_o rise_v or_o set_v or_o whether_o they_o rise_v or_o set_v at_o all_o ibid._n to_o find_v every_o day_n in_o the_o year_n at_o what_o time_n any_o of_o the_o planet_n come_v to_o the_o south_n p._n 18._o to_o find_v the_o true_a distance_n of_o the_o moon_n be_v motion_n from_o the_o sun_n p._n 19_o to_o find_v the_o longitude_n by_o know_v when_o any_o of_o the_o fix_a star_n come_v to_o the_o south_n p._n 20._o to_o find_v exact_o the_o true_a meridian_n and_o longitude_n of_o the_o city_n of_o london_n p._n 22._o the_o first_o of_o april_n i_o demand_v 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placec_n against_o which_o there_o have_v be_v much_o opposition_n endeavour_v to_o darken_v and_o put_v out_o this_o light_n to_o the_o longitude_n but_o there_o be_v a_o person_n very_o well_o know_v to_o most_o navigator_n which_o stand_v in_o the_o gap_n and_o defend_v it_o from_o be_v quite_o extinguish_v who_o further_a study_n and_o endeavour_n i_o doubt_v not_o but_o will_v daily_o add_v more_o and_o more_o light_a to_o this_o matter_n until_o at_o last_o practical_a seaman_n gain_v the_o honour_n and_o bring_v home_o their_o undeniable_a proof-piece_n and_o put_v a_o end_n to_o all_o objection_n and_o so_o for_o present_a i_o leave_v all_o my_o endeavour_n to_o your_o favourable_a construction_n hope_v they_o will_v prove_v worthy_a of_o your_o acceptance_n and_o in_o time_n beneficial_a to_o all_o man_n your_o friend_n ro._n theaker_n if_o
london_n at_o that_o time_n it_o be_v not_o perfect_a night_n at_o all_o but_o the_o twilight_n continue_v to_o find_v at_o all_o altines_n when_o the_o north_n star_n be_v direct_o south_n above_o the_o pole_n or_o north_n under_o the_o pole_n to_o know_v at_o what_o hour_n every_o day_n and_o night_n the_o north_n star_n be_v direct_o north_n or_o south_n above_o or_o under_o the_o pole_n bring_v the_o move_a meridian_n to_o 12_o of_o the_o clock_n in_o ♈_o aries_n hour-circle_n and_o 20_o degree_n the_o longitude_n of_o london_n then_o turn_v the_o upper_a plain_n until_o the_o star_n call_v aliot_n be_v a_o star_n in_o the_o great_a bear_n be_v rump_n or_o the_o hindmost_a of_o the_o 3_o in_o charles_n his_o wain_n unto_o that_o index_n on_o the_o north_n or_o southside_n and_o then_o if_o that_o star_n be_v on_o the_o south_n side_n the_o north_n star_n be_v then_o 2_o degree_n 30_o minute_n under_o the_o pole_n and_o if_o aliot_n be_v on_o the_o northside_n the_o north_n star_n be_v then_o 2_o degree_n 30_o minute_n above_o the_o pole_n so_o the_o 22_o day_n of_o march_n aliot_n be_v south_n at_o 12_o of_o the_o clock_n at_o night_n and_o so_o the_o north_n star_n be_v then_o 2_o degree_n 30_o minute_n under_o the_o pole_n and_o the_o 4_o day_n of_o february_n aliot_n be_v south_n at_o 5_o of_o the_o clock_n in_o the_o morning_n and_o so_o the_o north_n star_n be_v then_o also_o 2_o degree_n 30_o minute_n under_o the_o pole_n and_o the_o 9_o day_n of_o september_n aliot_n be_v north_n at_o 12_o of_o the_o clock_n at_o night_n and_o the_o north_n star_n be_v then_o 2_o degree_n 30_o minute_n above_o the_o pole_n and_o the_o 25_o day_n of_o october_n aliot_n be_v north_n at_o 9_o of_o the_o clock_n at_o night_n and_o then_o the_o north_n star_n be_v 2_o degree_n 30_o minute_n above_o the_o pole_n to_o draw_v the_o parallel_n of_o the_o sun_n or_o star_n declination_n and_o thereby_o to_o know_v when_o they_o rise_v or_o set_v or_o whether_o they_o rise_v or_o set_v at_o all_o to_o draw_v the_o parallel_n of_o declination_n first_o set_v one_o foot_n of_o the_o compass_n in_o the_o pole_n or_o centre_n of_o the_o move_a meridian_n and_o then_o extend_v the_o other_o foot_n to_o 5_o degree_n 10_o 15_o 20_o 25_o 30_o etc._n etc._n in_o the_o same_o move_a meridian_n according_a as_o the_o declination_n may_v require_v then_o with_o the_o same_o extent_n so_o take_v out_o of_o the_o move_a meridian_n set_v one_o foot_n in_o the_o centre_n of_o the_o move_a horizon_n and_o from_o the_o diameter_n sweep_v a_o arch_n of_o a_o circle_n both_o way_n to_o cut_v the_o outward_a edge_n of_o that_o plain_a horizon_n with_o point_n or_o cross_n in_o the_o edge_n of_o the_o horizon_n be_v the_o direct_a place_n where_o those_o star_n come_v unto_o at_o their_o rise_n or_o set_v note_v if_o any_o star_n here_o in_o the_o latitude_n of_o 51_o degree_n 30_o minute_n have_v his_o declination_n north_n equal_a or_o more_o than_o the_o compliment_n of_o the_o latitude_n that_o star_n i_o say_v set_v not_o at_o all_o for_o then_o the_o compass_n in_o the_o plain_a horizon_n will_v sweep_v a_o arch_n of_o a_o circle_n within_o the_o plain_a horizon_n and_o will_v not_o reach_v the_o outward_a edge_n therefore_o that_o star_n set_v not_o at_o all_o and_o so_o if_o any_o star_n have_v south_n declination_n equal_a or_o great_a than_o the_o compliment_n of_o the_o latitude_n that_o star_n rise_v not_o at_o all_o in_o our_o horizon_n and_o so_o of_o all_o other_o to_o find_v every_o day_n in_o the_o year_n at_o what_o time_n any_o of_o the_o planet_n come_v to_o the_o south_n first_o bring_v the_o move_a meridian_n to_o 12_o of_o the_o clock_n and_o 20_o degree_n the_o longitude_n of_o london_n and_o there_o keep_v it_o fast_o and_o then_o find_v the_o sign_n and_o degree_n that_o the_o planet_n be_v in_o at_o that_o time_n and_o then_o turn_v the_o whole_a upper_a plain_n until_o that_o sign_n and_o degree_n come_v to_o the_o move_a meridian_n place_v at_o 12_o of_o the_o clock_n 20_o degree_n and_o there_o keep_v they_o both_o fast_o together_o and_o then_o look_v in_o the_o circle_n of_o month_n for_o the_o day_n you_o desire_v to_o know_v the_o time_n of_o that_o planet_n come_v to_o the_o south_n and_o right_a against_o that_o day_n in_o ♈_o aries_n hour-circle_n you_o will_v see_v at_o what_o of_o the_o clock_n that_o planet_n come_v to_o the_o south_n so_o ♄_o saturn_n place_n or_o longitude_n in_o the_o ecliptic_a the_o 15_o day_n of_o march_n be_v 8_o degree_n 56_o minute_n of_o ♑_o capricorn_n if_o you_o turn_v the_o whole_a upper_a move_a sphere_n until_o that_o sign_n and_o degree_n in_o the_o ecliptic_a come_v to_o the_o meridian_n place_v at_o 12_o of_o the_o clock_n 20_o degree_n and_o there_o hold_v they_o both_o fast_o together_o and_o then_o right_a against_o the_o 15_o day_n ♈_o aries_n hour-circle_n it_o will_v appear_v that_o ♄_o saturn_n come_v to_o the_o south_n at_o 6_o of_o the_o clock_n 20_o minute_n in_o the_o morning_n and_o ♃_o jupiter_n place_n or_o longitude_n in_o the_o ecliptic_a the_o 15_o day_n of_o march_n be_v 14_o degree_n 3_o minute_n in_o â™’_o aquarius_n come_v to_o the_o south_n at_o 8_o of_o the_o clock_n 46_o minute_n pass_v in_o the_o morning_n and_o the_o same_o day_n mars_n be_v in_o 3_o degree_n 4_o minute_n of_o ♓_o pisces_fw-la come_v to_o the_o south_n at_o 10_o of_o the_o clock_n in_o the_o morning_n and_o ♀_o venus_n the_o same_o day_n be_v in_o 18_o degree_n 50_o minute_n of_o ♉_o taurus_n come_v to_o the_o south_n at_o 2_o of_o the_o clock_n 46_o minute_n in_o the_o afternoon_n and_o ☿_o mercury_n be_v then_o in_o 8_o degree_n 46_o minute_n of_o â™’_o aquarius_n come_v to_o the_o south_n at_o 8_o of_o the_o clock_n 46_o minute_n pass_v in_o the_o morning_n and_o the_o same_o day_n ☽_o luna_n be_v in_o 19_o degree_n 22_o minute_n of_o ♋_o cancer_n come_v to_o the_o south_n at_o 7_o of_o the_o clock_n 21_o minute_n pass_v in_o the_o afternoon_n allow_v 2_o minute_n in_o the_o ecliptic_a for_o each_o hour_n to_o be_v add_v to_o the_o place_n of_o the_o moon_n so_o here_o be_v add_v 14_o minute_n note_v if_o the_o day_n whereon_o you_o desire_v to_o know_v when_o the_o star_n come_v to_o the_o south_n be_v in_o the_o east_n semicircle_n they_o be_v morning_n hour_n or_o if_o they_o be_v in_o the_o west_n semicircle_n they_o be_v afternoon_n hour_n to_o find_v the_o true_a distance_n of_o the_o moon_n be_v motion_n from_o the_o sun_n first_o by_o the_o ephemerides_n find_v the_o moon_n be_v place_n in_o the_o ecliptic_a then_o bring_v the_o move_a meridian_n to_o 12_o hour_n and_o 20_o degree_n the_o longitude_n of_o london_n and_o then_o bring_v the_o moon_n be_v place_n in_o the_o ecliptic_a also_o to_o that_o meridian_n and_o there_o hold_v they_o both_o fast_o together_o and_o then_o in_o the_o circle_n of_o month_n find_v the_o day_n you_o desire_v to_o know_v at_o what_o hour_n the_o moon_n come_v to_o the_o meridian_n and_o right_a against_o that_o day_n you_o will_v find_v the_o hour_n of_o the_o moon_n be_v then_o come_v to_o the_o south_n so_o the_o 17_o day_n of_o march_n the_o moon_n be_v in_o 18_o degree_n of_o ♌_o leo_n be_v the_o move_a meridian_n to_o 12_o hour_n and_o 20_o degree_n the_o meridian_n and_o longitude_n of_o london_n then_o turn_v the_o whole_a upper_a sphere_n until_o the_o moon_n be_v place_n in_o the_o ecliptic_a also_o come_v to_o that_o meridian_n and_o there_o keep_v they_o both_o fast_o together_o and_o then_o in_o the_o circle_n of_o month_n you_o will_v find_v right_a against_o the_o 17_o day_n of_o march_n 9_o hour_n 13_o minute_n in_o the_o afternoon_n which_o be_v the_o time_n of_o the_o moon_n be_v come_v to_o the_o south_n that_o day_n always_o in_o work_n remember_v when_o you_o have_v find_v 9_o hour_n to_o allow_v two_o minute_n for_o each_o hour_n which_o here_o be_v 18_o minute_n which_o 18_o minute_n in_o the_o ecliptic_a at_o the_o rate_n of_o 4_o minute_n for_o a_o degree_n be_v 4_o degree_n â—_o and_o that_o join_v to_o 18_o degree_n of_o ♌_o leo_n the_o moon_n be_v place_n make_v 22½_n degree_n which_o be_v the_o true_a place_n that_o the_o moon_n be_v then_o in_o which_o bring_v to_o the_o index_n place_v at_o 12_o hour_n and_o 20_o degree_n as_o before_o and_o there_o keep_v fast_o right_a against_o the_o 17_o day_n of_o march_n will_v appear_v 9_o of_o the_o clock_n 13_o minute_n pass_v in_o the_o afternoon_n which_o be_v now_o the_o direct_a true_a time_n of_o the_o moon_n be_v come_v to_o the_o south_n note_v on_o
that_o upper_a move_a plain_n and_o the_o other_o part_n of_o this_o move_a meridian_n or_o index_n which_o be_v beyond_o or_o without_o the_o graduated_a part_n serve_v to_o cut_v the_o circle_n of_o month_n the_o hour-circle_n and_o equinoctial_a describe_v on_o the_o fix_a or_o low_a plain_n as_o the_o case_n shall_v require_v last_o there_o be_v place_v upon_o this_o upper_a sphere_n or_o move_a plain_n a_o turn_a horizon_n in_o the_o centre_n be_v to_o draw_v all_o pannole_n thereupon_o and_o may_v be_v fit_v for_o any_o latitude_n require_v have_v two_o index_n thereunto_o belong_v the_o long_a index_n to_o be_v apply_v for_o the_o rise_n or_o set_v of_o the_o sun_n when_o he_o be_v in_o the_o northern_a sign_n or_o for_o the_o sothe_v rise_v and_o set_v of_o the_o northern_a star_n and_o the_o short_a index_n be_v to_o be_v apply_v to_o the_o meridian_n for_o the_o rise_n set_v and_o sothe_v the_o southern_a star_n or_o for_o the_o sun_n when_o the_o sun_n be_v in_o the_o 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the_o move_a index_n or_o meridian_n to_o the_o day_n in_o the_o circle_n of_o month_n wherein_o you_o desire_v to_o know_v the_o time_n of_o that_o star_n rise_v or_o set_v and_o the_o same_o index_n at_o the_o same_o time_n will_v show_v in_o ♈_o aries_n hour-circle_n the_o time_n of_o that_o star_n rise_v if_o the_o star_n touch_v the_o horrizontal_n edge_n in_o the_o east_n semicircle_n or_o in_o ♈_o aries_n hour-circle_n will_v show_v the_o time_n of_o the_o star_n set_v if_o the_o star_n touch_v the_o edge_n of_o the_o move_a horizon_n in_o the_o west_n semicircle_n of_o the_o spheer_n so_o the_o star_n call_v the_o great_a dog_n if_o you_o desire_v to_o know_v the_o time_n of_o his_o rise_v the_o 10_o day_n of_o march_n be_v the_o star_n declination_n be_v south_n bring_v the_o short_a index_n of_o the_o move_a horizon_n to_o 12_o of_o the_o clock_n in_o ♈_o aries_n hour_n circle_n and_o to_o 20_o degree_n in_o the_o low_o fix_v equinoctial_a then_o keep_v that_o index_n there_o 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so_o have_v north_n declination_n than_o you_o must_v bring_v the_o long_a index_n of_o the_o horizon_n to_o 12_o hour_n and_o 20_o degree_n in_o the_o fix_a plain_n the_o longitude_n of_o london_n and_o then_o proceed_v as_o before_o have_v be_v teach_v but_o if_o the_o sun_n be_v in_o the_o southern_a sign_n and_o so_o have_v south_n declination_n then_o bring_v the_o short_a index_n of_o the_o horizon_n to_o 12_o hour_n and_o 20_o degree_n in_o the_o low_o fix_v plain_a the_o meridian_n and_o longitude_n of_o london_n and_o then_o proceed_v to_o find_v the_o rise_n and_o set_v of_o the_o sun_n upon_o the_o day_n propose_v so_o
the_o 20_o day_n of_o april_n the_o sun_n place_n be_v 10_o degree_n 12_o minute_n of_o ♉_o taurus_n now_o because_o ♉_o taurus_n be_v one_o of_o the_o northern_a sign_n and_o so_o the_o sun_n have_v north_n declination_n bring_v the_o long_a index_n of_o the_o move_a horizon_n to_o 12_o hour_n 20_o degree_n in_o the_o low_o fix_v plain_a the_o meridian_n of_o london_n then_o bring_v the_o sun_n place_n in_o the_o ecliptic_a first_o to_o the_o east_n part_n of_o the_o horizon_n and_o so_o keep_v all_o fast_n and_o then_o turn_v the_o move_a meridian_n to_o the_o 20_o day_n of_o april_n and_o it_o will_v then_o show_v in_o ♈_o aries_n hour-circle_n that_o the_o sun_n rise_v at_o 4_o of_o the_o clock_n 41_o minute_n pass_v in_o the_o morning_n &_o set_v at_o 7_o of_o the_o clock_n 41_o minute_n pass_v in_o the_o afternoon_n or_o if_o you_o desire_v to_o know_v the_o 20_o day_n of_o october_n at_o what_o time_n the_o sun_n rise_v or_o set_v now_o again_o because_o the_o sun_n place_n be_v 7_o degree_n of_o â™_o scorpio_n one_o of_o the_o southern_a sign_n and_o so_o have_v south_n declination_n bring_v the_o short_a index_n of_o the_o move_a horizon_n to_o 12_o of_o the_o clock_n and_o 20_o degree_n in_o the_o low_o fix_v plain_a and_o there_o keep_v it_o fast_o and_o then_o turn_v the_o upper_a move_a plain_n until_o the_o sun_n place_n 7_o degree_n of_o â™_o scorpio_n come_v to_o the_o east_n part_n of_o the_o horizon_n and_o then_o the_o move_a index_n bring_v to_o the_o 20_o day_n of_o october_n will_v show_v the_o sun_n than_o rise_v at_o 7_o of_o the_o clock_n 13_o minute_n pass_v in_o the_o morning_n and_o set_v at_o 4_o of_o the_o clock_n 47_o minute_n pass_v in_o the_o afternoon_n which_o be_v a_o much_o better_a way_n then_o to_o count_v one_o end_n of_o the_o morning_n index_n to_o cut_v the_o hour_n of_o sun_n set_v and_o the_o other_o end_n count_v back_o from_o 12_o in_o aries_n hour_n circle_n for_o the_o time_n of_o sun_n rising_n as_o have_v be_v 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in_o observation_n at_o sea_n to_o find_v the_o latitude_n first_o then_o if_o you_o turn_v the_o move_a meridian_n and_o short_a index_n of_o the_o horizon_n both_o together_o to_z ♈_o aries_n in_o the_o move_a plain_n the_o edge_n of_o the_o horizon_n will_v then_o cut_v the_o move_a meridian_n in_o 38_o degree_n and_o 30_o minute_n the_o height_n of_o the_o sun_n upon_o the_o meridian_n the_o 10_o day_n of_o march_n in_o the_o latitude_n of_o 51_o degree_n and_o 30_o minute_n and_o be_v also_o the_o height_n of_o the_o equinoctial_a in_o that_o latitude_n for_o ever_o therefore_o at_o any_o time_n if_o you_o add_v the_o sun_n declination_n when_o it_o be_v north_n or_o subtract_v it_o when_o it_o be_v south_n from_o 38_o degree_n and_o 30_o minute_n the_o height_n of_o the_o equinoctial_a it_o will_v show_v the_o height_n of_o the_o sun_n that_o day_n upon_o his_o meridian_n so_o the_o 20_o day_n of_o april_n the_o sun_n declination_n be_v 15_o degree_n north_n which_o add_v to_o the_o 38_o degree_n 30_o minute_n show_v the_o altitude_n of_o the_o sun_n that_o day_n upon_o the_o meridian_n be_v 53_o degree_n 30_o minute_n and_o the_o 18_o of_o october_n the_o sun_n have_v 13_o degree_n 30_o minute_n south_n declination_n which_o substract_v from_o 38_o degree_n 30_o minute_n rest_v 25_o degree_n which_o be_v the_o height_n of_o the_o sun_n that_o day_n upon_o his_o meridian_n here_o in_o the_o north_n latitude_n of_o 51_o degree_n 30_o minute_n and_o so_o of_o all_o other_o to_o find_v every_o day_n how_o many_o degree_n the_o sun_n or_o star_n dip_v or_o go_v under_o the_o horizon_n at_o midnight_n also_o to_o find_v the_o amplitude_n of_o the_o sun_n or_o star_n every_o day_n in_o the_o year_n at_o their_o rise_n or_o set_v to_o find_v the_o sun_n amplitude_n at_o his_o rise_n or_o set_v by_o this_o instrument_n there_o must_v also_o be_v provide_v a_o straight_a ruler_n to_o be_v employ_v as_o occasion_n shall_v require_v first_o then_o when_o you_o desire_v to_o know_v the_o sun_n amplitude_n you_o must_v grant_v the_o diameter_n betwixt_o ♈_o aries_n and_o ♎_o libra_n to_o represent_v the_o prime_n vertical_a circle_n or_o circle_n of_o the_o east_n and_o west_n and_o the_o quadrant_n from_o ♈_o aries_n to_o 90_o degree_n reckon_v in_o the_o equinoctial_a the_o quadrant_n of_o latitude_n and_o the_o diameter_n betwixt_o 90_o degree_n and_o 270_o degree_n the_o horizon_n circle_n then_o have_v the_o latitude_n of_o any_o place_n and_o declination_n of_o the_o sun_n bring_v the_o move_a meridian_n to_o the_o latitude_n and_o there_o keep_v it_o fast_o then_o with_o a_o pair_n of_o compass_n take_v the_o declination_n out_o of_o the_o equinoctial_a be_v one_o of_o the_o great_a circle_n and_o join_v it_o to_o the_o point_n of_o latitude_n in_o the_o quadrant_n of_o latitude_n towards_o ♈_o aries_n and_o then_o lie_v a_o straight_a ruler_n from_o that_o point_n parallel_n to_o the_o move_a meridian_n which_o be_v hold_v fast_o at_o the_o 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and_o so_o in_o the_o same_o manner_n you_o may_v find_v the_o amplitude_n of_o any_o of_o the_o fix_a star_n at_o their_o rise_n or_o set_v note_v if_o the_o sun_n have_v north_n declination_n it_o be_v call_v north_n amplitude_n and_o if_o it_o have_v south_n declination_n it_o be_v call_v south_n amplitude_n and_o the_o great_a latitude_n the_o great_a amplitude_n and_o so_o of_o the_o fix_a star_n note_v also_o until_o the_o sun_n be_v 18_o degree_n under_o the_o horizon_n it_o be_v the_o crepusculum_fw-la or_o twilight_n therefore_o here_o at_o london_n when_o the_o sun_n have_v 23_o degree_n 30_o minute_n north_n declination_n the_o sun_n dip_v but_o 15_o degree_n under_o the_o horizon_n therefore_o here_o at_o
the_o low_a fix_v plain_a in_o this_o instrument_n be_v place_v 3_o hour-circle_n the_o outwardmost_a with_o 24_o hour_n at_o ♈_o aries_n be_v to_o measure_v the_o right_a ascension_n in_o time_n the_o middle_a hour-circle_n which_o i_o call_v ♈_o aries_n hour-circle_n beginning_n at_o 12_o a_o clock_n and_o 20_o degree_n longitude_n be_v proper_a for_o the_o meridian_n of_o london_n to_o measure_v the_o hour_n of_o the_o day_n or_o night_n the_o three_o next_o the_o equinoctial_a be_v to_o measure_v time_n from_o the_o general_a or_o first_o astronomical_a meridian_n according_a to_o the_o distance_n betwixt_o the_o sun_n or_o star_n to_o find_v the_o longitude_n by_o know_v when_o any_o of_o the_o fix_a star_n come_v to_o the_o south_n first_o you_o must_v observe_v that_o by_o this_o projection_n in_o the_o low_o fix_v plain_a represent_v the_o terrestrial_a globe_n at_o one_o single_a certain_a point_n take_v in_o the_o equinoctial_a there_o be_v set_v and_o place_v 360_o degree_n 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clear_o discover_v for_o if_o it_o be_v inquire_v at_o what_o meridian_n and_o longitude_n the_o city_n of_o london_n be_v true_o seat_v if_o we_o shall_v search_v the_o terrestrial_a globe_n they_o will_v show_v we_o several_a longitude_n according_a to_o the_o several_a place_n where_o they_o appoint_v the_o first_o meridian_n to_o begin_v and_o end_v all_o longitude_n and_o so_o in_o effect_n will_v show_v we_o just_a nothing_o for_o indeed_o there_o be_v but_o one_o single_a proper_a meridian_n belong_v to_o the_o city_n of_o london_n or_o any_o other_o place_n whatsoever_o which_o may_v as_o sure_o be_v point_v out_o and_o show_v which_o be_v it_o in_o particular_a by_o this_o instrument_n as_o any_o astronomical_a calculator_n can_v tell_v you_o the_o very_a day_n hour_n &_o minute_n of_o the_o star_n come_v to_o the_o south_n which_o many_o will_v affirm_v they_o can_v infallible_o perform_v and_o several_a author_n have_v already_o draw_v out_o table_n to_o that_o purpose_n some_o of_o which_o i_o can_v testify_v be_v exceed_v well_o true_a and_o perfect_o do_v and_o perform_v but_o i_o have_v not_o observe_v that_o any_o of_o they_o have_v true_o state_v and_o discover_v the_o meridian_n proper_o belong_v to_o the_o particular_a longitude_n of_o london_n or_o point_v out_o which_o or_o where_o it_o be_v i_o suppose_v the_o reason_n have_v be_v because_o they_o find_v the_o longitude_n of_o place_n upon_o the_o earth_n be_v various_o affirm_v and_o therefore_o they_o meddle_v with_o none_o of_o they_o to_o find_v exact_o the_o true_a meridian_n and_o longitude_n of_o the_o city_n of_o london_n first_o by_o this_o instrument_n to_o find_v the_o true_a longitude_n of_o london_n you_o must_v consider_v the_o day_n of_o what_o month_n you_o will_v employ_v for_o this_o service_n which_o day_n i_o then_o call_v the_o day_n of_o the_o sun_n then_o always_o bring_v the_o day_n of_o the_o sun_n to_o 360_o degree_n the_o beginning_n and_o end_v of_o all_o longitude_n then_o take_v notice_n of_o any_o of_o the_o fix_a star_n place_v upon_o the_o upper_a move_a plain_n in_o this_o instrument_n and_o bring_v the_o move_a index_n to_o cut_v that_o star_n and_o in_o the_o outward_a hour-circle_n you_o will_v find_v the_o hour_n and_o minute_n of_o that_o star_n come_v to_o the_o south_n when_o the_o day_n of_o the_o sun_n stand_v at_o 360_o degree_n in_o the_o equinoctial_a which_o on_o the_o same_o day_n of_o the_o sun_n will_v show_v one_o and_o the_o same_o hour_n and_o minute_n for_o the_o star_n be_v south_n in_o all_o the_o particular_a longitud_n of_o the_o world_n and_o so_o that_o hour_n common_a to_o all_o longitud_n can_v distinguish_v the_o particular_a meridian_n of_o any_o of_o they_o but_o this_o instrument_n from_o that_o ground_n will_v show_v each_o proper_a and_o particular_a meridian_n and_o longitude_n of_o all_o place_n upon_o the_o terrestrial_a globe_n which_o can_v be_v remove_v or_o alter_v for_o if_o you_o count_v in_o the_o low_a hour-circle_n place_v next_o the_o equinoctial_a 1_o hour_n 2_o hour_n 3_o hour_n 4_o hour_n &c._n &c._n according_a to_o the_o diurnal_a motion_n until_o you_o bring_v the_o day_n of_o the_o sun_n to_o such_o a_o hour_n as_o right_v against_o it_o will_v stand_v the_o hour_n and_o minute_n in_o ♈_o aries_n hour-circle_n answerable_a and_o equal_a to_o the_o hour_n first_o find_v in_o the_o outward_a circle_n contain_v 24_o hour_n a_o natural_a day_n at_o which_o time_n the_o day_n of_o the_o sun_n be_v first_o bring_v to_o 360_o degree_n in_o the_o equinoctial_a and_o so_o the_o hour_n of_o the_o star_n be_v that_o day_n one_o and_o the_o same_o in_o all_o longitude_n but_o now_o i_o say_v if_o the_o day_n of_o the_o sun_n be_v turn_v to_o so_o many_o hour_n and_o minute_n in_o the_o low_a hour-circle_n that_o then_o against_o the_o same_o day_n of_o the_o sun_n in_o ♈_o aries_n hour-circle_n there_o appear_v the_o hour_n and_o minute_n equal_a to_o the_o hour_n and_o 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tail_n and_o thereon_o place_v the_o move_a meridian_n or_o index_n and_o then_o in_o the_o outward_a hour-circle_n it_o will_v show_v that_o star_n come_v to_o the_o south_n at_o 10_o a_o clock_n 13_o minute_n in_o the_o afternoon_n which_o be_v the_o common_a hour_n for_o all_o meridian_n in_o the_o world_n for_o that_o day_n therefore_o now_o turn_v about_o the_o upper_a move_a plain_n or_o sphere_n until_o the_o first_o day_n of_o april_n the_o day_n of_o the_o sun_n come_v to_o 8_o hour_n 52_o minute_n in_o the_o lowermost_a hour-circle_n and_o then_o right_a against_o the_o same_o hour_n and_o day_n of_o the_o sun_n in_o ♈_o aries_n hour-circle_n you_o will_v then_o find_v 10_o a_o clock_n 13_o minute_n at_o night_n equal_a to_o the_o hour_n first_o find_v in_o the_o outward_a hour-circle_n and_o so_o the_o star_n call_v the_o lion_n tail_n will_v now_o stand_v exact_o against_o 20_o degree_n in_o the_o equinoctial_a place_v upon_o the_o fix_a plain_n at_o 10_o a_o clock_n 13_o minute_n at_o night_n which_o be_v the_o proper_a and_o particular_a meridian_n and_o longitude_n of_o the_o city_n of_o london_n which_o can_v possible_o be_v remove_v change_v or_o alter_v and_o be_v never_o true_o find_v or_o thus_o state_v by_o any_o man_n before_o so_o in_o like_a manner_n if_o you_o will_v the_o same_o first_o day_n of_o april_n employ_v the_o fix_a star_n call_v hidra_n heart_n to_o find_v the_o true_a meridian_n and_o longitude_n of_o london_n bring_v again_o the_o first_o day_n of_o april_n the_o day_n of_o the_o sun_n as_o before_o to_o 360_o degree_n and_o then_o place_v the_o move_a meridian_n upon_o that_o star_n and_o in_o the_o outward_a hour-circle_n it_o will_v show_v 7_o a_o clock_n 52_o minute_n therefore_o now_o turn_v the_o day_n of_o the_o sun_n to_o 6_o hour_n 32_o minute_n in_o the_o lowermost_a hour-circle_n and_o then_o right_a against_o that_o in_o ♈_o aries_n hour-circle_n you_o will_v find_v again_o 7_o a_o clock_n 52_o minute_n and_o 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employ_v any_o of_o the_o fix_a star_n which_o you_o think_v convenient_a and_o they_o will_v all_o affirm_v the_o true_a proper_a and_o particular_a meridian_n and_o longitude_n of_o london_n be_v direct_o 20_o degree_n which_o can_v be_v remove_v alter_v or_o contradict_v by_o any_o man_n and_o so_o be_v at_o any_o place_n or_o point_n upon_o the_o terrestrial_a globe_n by_o this_o instrument_n and_o the_o same_o rule_n you_o may_v find_v the_o proper_a and_o particular_a meridian_n and_o longitude_n of_o that_o place_n which_o can_v be_v remove_v alter_v or_o deny_v by_o any_o one_o to_o find_v the_o true_a longitude_n of_o the_o city_n of_o london_n at_o the_o sun_n be_v set_v example_n suppose_v the_o ten_o day_n of_o april_n it_o be_v require_v to_o find_v the_o true_a longitude_n of_o the_o city_n of_o london_n at_o the_o set_n of_o the_o sun_n bring_v the_o long_a meridian_n of_o the_o move_a horizon_n to_o 360_o degree_n the_o first_o index_n of_o the_o world_n and_o there_o keep_v it_o fast_o then_o turn_v the_o upper_a move_a sphere_n until_o the_o place_n of_o the_o sun_n be_v then_o the_o first_o minute_n of_o ♉_o taurus_n come_v to_o the_o edge_n of_o the_o horizon_n in_o the_o west_n semicircle_n of_o the_o instrument_n then_o bring_v the_o move_a meridian_n or_o index_n to_o the_o place_n of_o the_o sun_n which_o index_n will_v then_o at_o the_o same_o time_n in_o the_o circle_n of_o day_n and_o month_n cut_v or_o show_v the_o 10_o day_n of_o april_n the_o day_n of_o the_o sun_n and_o now_o the_o instrument_n thus_o state_v keep_v all_o the_o index_n and_o horizon_n unaltered_a and_o then_o turn_v the_o whole_a upper_a move_a sphere_n until_o that_o index_n which_o cut_v the_o day_n and_o place_n of_o the_o sun_n come_v to_o 360_o degree_n the_o first_o meridian_n and_o then_o the_o long_a index_n of_o the_o horizon_n in_o the_o outward_a hour-circle_n will_v cut_v 4_o hour_n which_o be_v the_o distance_n that_o day_n betwixt_o the_o sun_n when_o 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will_v show_v 5_o of_o the_o clock_n the_o time_n of_o sun_n rising_n and_o the_o long_a index_n of_o the_o horizon_n at_o the_o same_o time_n will_v stay_v again_o at_o 20_o degree_n as_o before_o the_o true_a meridian_n and_o longitude_n of_o the_o city_n of_o london_n confirm_v by_o three_o several_a way_n and_o can_v be_v remove_v or_o alter_v to_o any_o other_o point_n which_o point_n of_o longitude_n be_v never_o find_v before_o the_o four_o way_n to_o find_v the_o true_a longitude_n of_o the_o city_n of_o london_n by_o the_o moon_n when_o she_o come_v to_o the_o south_n suppose_v the_o 11_o day_n of_o may_n the_o moon_n be_v then_o in_o 2_o degree_n of_o ♌_o leo_n it_o be_v require_v to_o show_v then_o the_o true_a longitude_n of_o the_o city_n of_o london_n first_o bring_v one_o index_n in_o the_o circle_n of_o month_n to_o the_o 11_o day_n of_o may_n the_o day_n of_o the_o sun_n then_o bring_v another_o index_n to_o the_o 25_o degree_n of_o ♌_o leo_n the_o moon_n place_n that_o day_n and_o then_o the_o distance_n betwixt_o those_o index_n will_v appear_v in_o the_o equinoctial_a to_o be_v 88_o degree_n which_o in_o time_n be_v 5_o a_o clock_n 52_o minute_n therefore_o now_o turn_v the_o whole_a move_a upper_a sphere_n keep_v the_o two_o index_n unaltred_a and_o bring_v the_o index_n place_v at_o the_o day_n of_o the_o sun_n to_o 360_o the_o first_o meridian_n and_o begin_n and_o end_n of_o longitude_n and_o then_o the_o index_n of_o the_o moon_n in_o the_o equinoctial_a on_o the_o fix_a plain_n will_v show_v 88_o degree_n which_o be_v 5_o hour_n 32_o minute_n in_o time_n but_o in_o regard_n the_o moon_n for_o this_o distance_n of_o time_n must_v have_v 2_o minute_n allow_v for_o each_o hour_n take_v with_o a_o pair_n of_o compass_n 15_o degree_n of_o the_o fix_a equinoctial_a and_o then_o set_v one_o foot_n in_o 88_o degree_n and_o turn_v over_o the_o compass_n until_o they_o come_v to_o 360_o degree_n and_o count_v how_o many_o time_n they_o be_v turn_v over_o which_o here_o will_v appear_v to_o be_v 6_o time_n therefore_o at_o 2_o minute_n for_o a_o hour_n be_v 12_o minute_n which_o add_v to_o 5_o hour_n 52_o minute_n make_v 6_o a_o clock_n 4_o minute_n agree_v with_o mr._n wing_n calculation_n within_o 2_o minute_n with_o 12_o minute_n add_v to_o 88_o make_v 91_o degree_n the_o true_a distance_n the_o moon_n index_n now_o stand_v there_o then_o the_o indexce_n still_o unaltred_a turn_v the_o whole_a move_a sphere_n until_o the_o moon_n index_n come_v to_o 6_o a_o clock_n 6_o minute_n which_o will_v also_o cut_v 111_o degree_n in_o the_o equinoctial_a and_o then_o the_o index_n of_o the_o sun_n will_v then_o stay_v again_o at_o 20_o degree_n the_o true_a longitude_n of_o the_o city_n of_o london_n as_o before_o which_o can_v be_v remove_v alter_v or_o contradict_v by_o any_o one_o and_o thus_o have_v the_o true_a longitude_n of_o london_n be_v confirm_v by_o four_o several_a way_n to_o be_v direct_o 20_o degree_n and_o no_o more_o no_o man_n have_v before_o now_o ever_o discover_v what_o it_o be_v and_o so_o by_o the_o same_o rule_n may_v the_o true_a longitude_n of_o any_o part_n of_o the_o world_n be_v speedy_o find_v another_z way_n to_o find_v the_o true_a longitude_n of_o the_o city_n of_o london_n by_o the_o moon_n when_o she_o come_v to_o the_o south_n suppose_v the_o eleven_o day_n of_o may_n the_o moon_n be_v then_o in_o 25_o degree_n of_o ♌_o leo_n it_o be_v require_v to_o find_v the_o true_a longitude_n of_o the_o city_n of_o london_n first_o bring_v the_o 11_o day_n of_o may_n now_o the_o day_n of_o the_o sun_n to_o 360_o degree_n the_o first_o meridian_n and_o turn_v the_o index_n to_o 25_o degree_n of_o ♌_o leo_n the_o moon_n be_v place_n that_o day_n and_o then_o the_o distance_n betwixt_o the_o sun_n and_o the_o moon_n will_v appear_v in_o the_o equinoctial_a upon_o the_o fix_a plain_n to_o be_v 88_o degree_n and_o in_o the_o outward_a hour-circle_n 5_o a_o clock_n 52_o minute_n but_o now_o in_o regard_n the_o moon_n must_v be_v allow_v 2_o minute_n for_o each_o hour_n to_o be_v add_v to_o this_o distance_n take_v 15_o degree_n with_o a_o pair_n of_o compass_n out_o of_o the_o equinoctial_a and_o set_v one_o foot_n in_o 88_o degree_n and_o you_o will_v find_v you_o may_v turn_v they_o over_o near_o fix_v time_n before_o you_o come_v to_o 360_o degree_n the_o first_o meridian_n therefore_o you_o must_v allow_v 12_o minute_n which_o be_v 3_o degree_n more_o in_o the_o equinoctial_a and_o the_o moon_n index_n must_v now_o stand_v at_o 91_o degree_n in_o the_o equinoctial_a and_o then_o in_o the_o outward_a hour-circle_n will_v now_o show_v 6_o a_o clock_n 4_o minute_n therefore_o now_o keep_v the_o moon_n index_n unaltred_a turn_v the_o whole_a move_a sphere_n until_o the_o index_n of_o the_o moon_n cut_v in_o ♈_o aries_n hour-circle_n to_o 6_o a_o clock_n 6_o minute_n in_o the_o morning_n and_o then_o the_o 11_o day_n of_o may_n the_o day_n of_o the_o sun_n will_v stand_v right_a against_o 20_o degree_n in_o the_o equinoctial_a again_o the_o true_a longitude_n of_o the_o city_n of_o london_n as_o before_o which_o can_v be_v alter_v or_o contradict_v by_o any_o one_o and_o thus_o we_o have_v state_v the_o true_a longitude_n of_o london_n four_o several_a way_n to_o be_v direct_o 20_o degree_n and_o no_o more_o which_o be_v not_o know_v or_o discover_v before_o this_o time_n by_o any_o man._n 1._o note_v the_o outward_a hour-circle_n always_o show_v the_o sun_n distance_n from_o the_o star_n from_o the_o horizon_n or_o from_o the_o moon_n in_o hour_n and_o minute_n and_o the_o equinoctial_a show_v the_o distance_n in_o degree_n 2._o and_o the_o innermost_a hour-circle_n show_v how_o many_o hour_n and_o minute_n you_o may_v turn_v the_o day_n of_o the_o sun_n or_o the_o place_n of_o the_o moon_n 3._o and_o ♈_o aries_n hour-circle_n in_o the_o middle_n always_o in_o his_o own_o account_n show_v the_o same_o hour_n with_o the_o outward_a hour-circle_n and_o so_o determine_v the_o hour_n of_o the_o day_n proper_a for_o that_o latitude_n and_o longitude_n which_o you_o be_v at_o two_o several_a question_n by_o find_v the_o moon_n south_n to_o know_v what_o meridian_n you_o be_v at_o the_o first_o question_n the_o 10_o day_n of_o june_n 1665_o three_o man_n be_v at_o sea_n the_o first_o man_n have_v the_o moon_n south_n at_o 6_o hour_n 18_o minute_n the_o second_o man_n at_z 6_o hour_n 29_o minute_n and_o the_o three_o man_n have_v the_o moon_n south_n at_o 6_o hour_n 32_o minute_n i_o demand_v what_o meridian_n and_o longitude_n each_o of_o those_o man_n be_v then_o at_o example_n first_o the_o 10_o day_n of_o june_n you_o may_v then_o ready_o find_v that_o the_o sun_n be_v then_o in_o 29_o degree_n of_o ♊_o gemini_fw-la at_o 20_o degree_n the_o meridian_n of_o london_n and_o the_o moon_n at_o that_o time_n in_o 3_o degree_n 50_o minute_n of_o ♎_o libra_n therefore_o now_o set_v one_o index_n to_o the_o 10_o day_n of_o 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the_o moon_n come_v to_o 20_o degree_n the_o longitude_n of_o london_n but_o now_o in_o regard_n there_o must_v be_v allow_v 2_o minute_n for_o a_o hour_n for_o the_o moon_n depression_n which_o be_v 12_o minute_n therefore_o turn_v back_o the_o index_n of_o the_o moon_n 3_o degree_n and_o then_o turn_v again_o the_o move_a upper_a sphere_n until_o the_o index_n of_o the_o moon_n cut_v 20_o degree_n the_o longitude_n of_o london_n and_o the_o index_n of_o the_o sun_n will_v then_o cut_v 6_o hour_n 29_o minute_n so_o the_o second_o man_n have_v the_o moon_n south_n at_o 20_o degree_n the_o meridian_n of_o london_n the_o three_o man_n have_v
the_o moon_n south_n at_o 6_o hour_n 32_o minute_n the_o index_n not_o alter_v from_o the_o last_o proposition_n turn_v the_o upper_a sphere_n until_o the_o index_n of_o the_o moon_n come_v to_o 320_o degree_n but_o now_o have_v 3_o hour_n difference_n allow_v 2_o minute_n for_o a_o hour_n turn_v back_o the_o index_n of_o the_o moon_n 1½_n degree_n and_o then_o turn_v again_o the_o upper_a sphere_n until_o the_o index_n of_o the_o moon_n cut_v 320_o degree_n and_o then_o the_o index_n of_o the_o sun_n will_v cut_v 6_o hour_n 32_o minute_n so_o the_o three_o man_n have_v the_o moon_n south_n at_o the_o meridian_n and_o longitude_n of_o 320_o degree_n the_o second_o question_n the_o 17_o day_n of_o june_n 1665_o five_o man_n be_v at_o sea_n the_o moon_n then_o at_o the_o full_a at_o 10_o a_o clock_n 24_o minute_n pass_v in_o the_o morning_n the_o sun_n in_o the_o 6_o degree_n of_o ♋_o cancer_n and_o the_o moon_n in_o the_o 6_o degree_n of_o ♑_o capricorn_n south_n at_o 22_o a_o clock_n at_o 224_o degree_n the_o first_o man_n meridian_n and_o longitude_n but_o the_o second_o man_n have_v the_o moon_n south_n at_o 12_o minute_n after_o 12_o a_o clock_n the_o three_o man_n 24_o minute_n after_o 12_o the_o four_o man_n 28_o minute_n after_o 12_o and_o the_o five_o man_n 34_o minute_n after_o 12_o a_o clock_n i_o demand_v what_o meridian_n and_o longitude_n each_o of_o these_o particular_a man_n be_v then_o at_o example_n first_o lay_v the_o index_n one_o end_n on_o the_o 17_o day_n of_o june_n which_o will_v then_o also_o cut_v 6_o degree_n of_o ♋_o cancer_n the_o sun_n place_n and_o the_o other_o end_n will_v then_o cut_v 6_o degree_n of_o ♑_o capricorn_n the_o moon_n place_n then_o move_v the_o upper_a sphere_n until_o the_o sun_n end_n of_o the_o index_n cut_v 10_o a_o clock_n 24_o minute_n pass_v in_o the_o morning_n the_o time_n of_o full_a moon_n and_o the_o moon_n be_v end_n will_v then_o cut_v 224_o degree_n in_o the_o equinoctial_a which_o be_v the_o first_o man_n longitude_n at_o 12_o a_o clock_n then_o allow_v 2_o minute_n for_o each_o 15_o degree_n or_o one_o hour_n of_o time_n for_o the_o moon_n be_v depression_n you_o will_v then_o first_o find_v that_o betwixt_o 224_o degree_n and_o 134_o degree_n be_v contain_v 90_o degree_n which_o be_v 6_o hour_n of_o time_n now_o allow_v 2_o minute_n for_o each_o hour_n depression_n in_o all_o 12_o minute_n which_o be_v 3_o degree_n turn_v the_o upper_a sphere_n the_o index_n unaltred_a until_o the_o moon_n end_v come_v to_o 134_o degree_n then_o 3_o degree_n allow_v for_o depression_n make_v exact_o 12_o a_o clock_n 12_o minute_n past_a so_o the_o second_o man_n longitude_n must_v be_v 134_o degree_n at_o that_o time_n and_o place_n the_o three_o man_n have_v the_o moon_n south_n 24_o minute_n after_o 12_o a_o clock_n allow_v 2_o minute_n depression_n for_o each_o hour_n it_o appear_v that_o his_o meridian_n and_o longitude_n when_o he_o have_v the_o moon_n south_n must_v be_v 44_o degree_n because_o the_o distance_n betwixt_o 44_o degree_n and_o 224_o degree_n in_o the_o equinoctial_a be_v 180_o degree_n or_o 12_o hour_n and_o then_o 24_o minute_n which_o be_v 6_o degree_n allow_v for_o depression_n make_v 24_o minute_n after_o 12_o a_o clock_n so_o the_o three_o man_n must_v have_v the_o moon_n south_n at_o the_o meridian_n and_o longitude_n of_o 44_o degree_n the_o four_o man_n have_v the_o moon_n south_n at_o 20_o degree_n 28_o minute_n after_o 12_o a_o clock_n because_o the_o distance_n betwixt_o 20_o degree_n and_o 224_o degree_n in_o the_o equinoctial_a be_v 204_o degree_n or_o 13_o hour_n 9_o minute_n therefore_o allow_v 2_o minute_n depression_n for_o a_o hour_n make_v 28_o minute_n after_o 12_o a_o clock_n so_o the_o four_o man_n have_v the_o moon_n south_n at_o 20_o degree_n the_o meridian_n and_o longitude_n of_o london_n the_o five_o man_n have_v the_o moon_n south_n at_o 334_o degree_n 34_o minute_n after_o 12_o a_o clock_n because_o the_o distance_n according_a to_o the_o diurnal_a motion_n betwixt_o 334_o degree_n and_o 224_o degree_n be_v 250_o degree_n or_o 17_o hour_n allow_v 2_o minute_n depression_n for_o a_o hour_n make_v 34_o minute_n so_o the_o five_o man_n have_v the_o moon_n south_n at_o 334_o degree_n 34_o minute_n after_o 12_o a_o clock_n which_o be_v all_o that_o be_v require_v the_o rule_n and_o reason_n for_o turn_v the_o upper_a shere_n be_v from_o 360_o degree_n the_o rule_n be_v to_o see_v how_o many_o hour_n and_o minute_n the_o sun_n can_v be_v turn_v from_o the_o first_o point_n of_o ♈_o aries_n before_o tâ—e_v star_n can_v come_v to_o be_v south_n and_o the_o reason_n be_v because_o the_o star_n can_v be_v south_n but_o at_o one_o time_n at_o one_o meridian_n to_o cut_v the_o orison_n for_o all_o latitud_n upon_o a_o piece_n of_o pasteboard_n draw_v two_o line_n squarewise_o that_o be_v perpendicular_a to_o each_o other_o and_o let_v the_o long_a line_n be_v the_o diameter_n of_o the_o upper_a sphere_n and_o the_o short_a the_o perpendicular_a the_o latitude_n from_o the_o centre_n of_o the_o index_n by_o which_o mean_n from_o the_o centre_n where_o the_o two_o line_n across_o each_o other_o there_o be_v get_v or_o find_v 3_o point_n now_o find_v the_o centre_n to_o those_o 3_o point_n and_o strike_v a_o arch_n and_o cut_v out_o by_o that_o arch_n the_o horizon_n require_v the_o end_n errata_fw-la pag._n 6._o l._n 28._o for_o pannage_v read_v parallel_n p._n 8._o l._n 17._o for_o terrestrial_a r._n celestial_a p._n 11._o l._n 26._o for_o contain_v r._n count_v p._n 17._o l._n 1._o for_o all_o altines_n r._n all_o time_n p._n 24._o l._n 27._o for_o first_o index_n r._n first_o meridian_n