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Show [ 243] 116 b'ucampment at the junction of tile }./otlh and :South for/..: of tlit! Platte 'river.-Continued. DETERMINATION OF LATITt'Df':. July 2, 1 42.-Altitude of Antares in the meridian. Double altitude of the True altitude. Latitude. Star. dtg. mi11. src. deg. mi,'- src. de~ . mi11. ~i'(' 45 44 15 2~ 49 55 41 05 22 DETERMINATION OF LONGITUDE. July 3, 1842.-Altitude of the Sun. Observations. PIRST SI!,Rif.S, SECOND SERI Double altitude of the Time of chronometer. 1 Douhlc altitude of the Tim Sun's lower limb. I Sun'd lower limb . c of chronomotc1. -- dPJ(. min. sec. h. 53 50 50 9 54 lJ9 30 9 55 OS 50 9 55 3 20 9 56 09 20 9 Mean time. -------· h. Ill ill. sec. 7 lo 01 min. sec. d~g. min. 08 22.0 57 06 09 04.5 57 43 11 43.5 58 15 13 11.0 58 41 14 35.3 59 l1 sec. ' 25 05 40 40 25 I I. 9 9 9 q . 9 mi 11 • l7 ] ~ 21 22 .W'I 05 ,;) 44 .5 12.7 22.0 H.!i ~---·----- llesult of calculation. Advance. Longitude. -· ·---.. lt. min. scr. l 57 41 • e e e e I e I I I e I • • e e • e I I I • 1..,im? .did not permit us to \vait at 8ome of the most important geoCYraplli' Cal posltJOns.for favorable weather, and I have occasionally refe1red 1~ these t.l~~ observations tak.en at less mttrked local itics. Bv the chronometric dif( ea en?e, the lunar ch~tance of September 16, ob~erved about forty miles betow, l.S referred to th ts place. 117 [ 243] Encarnpm,ent on tlte left bank of the South fork of Platte river. DE T£RMI~ATION OF LONQITUDE. July 4, 1842.-Altitude of the Sun. Observations. ' FIRST SERIU. I I SECOND SERIES. Double altitud of the Time of chronometer. I Double altitude of the Time. of chronometer. Sun' lower limb. Sun's lower limb. I c!rg. mi1t. cc. h. /llilt. sec. dt:g. min. sec. h. min. . ec. 55 49 40 G 52 2~ 53 54 15 G 57 05 55 24 10 G 53 05 53 34 00 6 57 59 54 57 10 G 54 17 53 20 40 G 58 35 54 30 !:10 G 55 25 53 02 30 G 59 23 54 14 50 G 5G 10 52 44 30 7 00 11 Result of calculation. .Mean time. :\.dvance. Longitude. 0 ........................................... ~ ..................... . |