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Show [ 243] 102 b'ncampment at Chouteau's lmrcr tradi11s:;· lwusr, right bank of the J(rw:.as 1·iver, 700 feet above tlte level of the Uulf of llfc.t·ico. From this dat , up to the 24th of Aug-ust, the BrocklJrtnk pocket chronometer was u d jn notitlg tunc. DETERMINATION OF LO!\CITU})E. June 9, 1 tl2.-Altitnde of the sun. Obsenations. FIR ST SERIES. SECOND SERIES. I I Double altitud<' of the Tim of chronomclcr. ! Double altitude of the Tjmc of chronometer. Sun's lower limb. (Brockbank.) ! Sun'~ IO\H'l' limb. (Brocklmnk.) cleg. min. srr. h. min. S/'1'. tlrg. ?II ill . sec. h. 111 in. ~( ( 53 l!) 00 6 29 32 . .') 51 21 30 6 34 :3~.5 52 54 50 6 30 31i.O 51 02 20 6 35 :w.o 52 :~!) :35 6 31 15.6 50 45 50 6 3G 12.3 52 22 25 6 32 01 .0 50 24 00 6 37 10.0 52 02 50 6 32 51.0 50 10 00 6 37 45.7 Index error == - 25". Result of calculntion. . Man time. Adv::mce. Longitude. h. min. S('f. h. mi?r. srr. de g. min. St'f, 4 57 22 1 :3G 25 94 3!) 31 DETERMIN ATIO!\ OF LATITUDE. June 9, 1842.-Aititude of Polaris. Observations. Double altitude of Pol:lris. Time of chronometer. dr~. min. src. h. mi11. SPC. 75 24 50 3 29 5!1 75 25 05 3 :n 50 75 26 00 3 33 35 75 26 20 3 :~5 22 7fl 27 00 3 :37 00 75 2 40 3 38 44 75 28 50 3 40 42 75 28 10 3 42 05 75 30 40 3 44 14 75 30 50 3 46 Q7 Thennometer 55°. 103 Eucampm.ent at Chouteau's l01f'Cr trarlin0'-lwuse.-Continucd. ilfsult of calculation. True ::dtitude. Mean lime. Latitude. h. 111in. su. !) 3l 43 de~. ?II i11. :~rc. 37 4~ 2G drg. min. src. :3!) 05 53 June 9, 1812.-Altitudc of A ntare in the meridian. Double nltittule of Antares. de!i. m i 11. srr. 49 42 50 True altitude. drg. min. :~rr. 2-l 4!) 17 Latilude. tleg. min. src. 3!.) 06 uo Encamp11wnt on the left bank of the J(anzas river. DETEHMlN.\TION OF LONGITUDE . J unc 16, 1 42.-Altitude of the un. Ob ervations. FIRST SJ::HH:S. SJ.o.:COND SERIES. -- ·- Double altitude of tho Time of chronometer. Double altitude of the Time of chronometer. lower limb of the Sun. I lower limb 0f the Sun. deg. m.in. sec. h. min. sec. (leg. min. sec. h. mi11. ser. 56 40 00 6 26 :31.5 5:J :n 50 6 34 2().0 56 ]3 55 6 :n 41.5 53 21 45 6 35 07.7 55 5;l 15 ti 28 :H.O 53 08 00 6 :~:) 47.0 55 35 20 6 2!) 22.0 5~ 4!) 55 6 :w 3~.7 55 IG 55 6 30 10.0 I 5:2 :30 30 6 31 23.0 1lcsult of calculation. Mean time. Advance. Longitude. --------':.....- -- .................................................................. |