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Show [ t 7 ; J 6-tO F.N('I\MPMF.NT ON 'T'HE NORTH FOHK OF PLATTE RIVER, MOtrrH OF WEET WATER Hl\TgR. ~Determination of longitude, .!lugu.~t 23, 1842-distancefrom lite second limb of the moon to Ju;n'tcr. (With the circle.) Titno of chronometer. lt. min. su. 7 4:J 1 7 7 52 51 7 5G :33 8 Ol 58 8 (15 43 8 ll 25 8 14 35 8 20 50 8 24 2~ 8 29 20 ons:z,;HVATION • A pparont dllltance. Deg. min. St,"C 16 59 t 0 RE~UVl' OF CALCULATION. True diRtance. De~. 81 nun. 10 sec. 38 Mean time at Greenwich. h. rmn. sec. lG 11 21 Longitude. D~. 107 mm. au. 40 00 NOON HALT ON HOUSE. 'HOE CHEEK. .IJete1~mination of latitude, ..flugust 30, 1842-altitude of Lh.e sun in the meridian. Double altitude of the sun's lower limb. Dt.g. min. sec. ll2 38 35 OBSERVATION . True central nltituJe. ----- Deg. min. .1ec. 56 33 57 Index error = - 1 min. 30 sec. Ll\tihtde. Deg. mm. sec. 4% 24 24 641 [ 174 J ENCAMPl\H:NT ON THE LEFT llA.r K OJ.~ TRF. N. f•'ORK OJ<" PLATTE RIVER. Determination o.f !uLitudt' Septernber 4, 1 42-u//itudt~ of o. .llquilte £n. I hf' mf'ridia 11. Doublo altitude of a Aquila? .. Deg. mm. ~ec. 11:1 08 30 OB 'ER VA'!' IONS 'frur altitud~ ·. Deg. mi,. sec. 66 32 56 lnc.lcx orr8r - l min. 30 s.;cc. T.atitucle. Deg. mm. sec. 41 54 38 ENCAMPMENT ON 'fHE RIGHT DANK OF THE N. FORK OI•' PLATTE RIVER. t,IVE MILES ABOVE CHIMNEY ROCK. Determination of latiludf', Seplentber 5, 1 42-altitude of Polaris. Double altituc.l ' of Polaris. Deg. nun. 81 12 84 14 84 17 84 18 84 21 ~ec . 00 50 20 50 50 OH~I::RVA'I'IONS. Tim • of chronometer. ft. 11 ll ll 11 I I mtn. 07 10 12 16 20 sec. 03 43 55 39 50 Index error ~ - 1 min. 30 RCC. September 5, 1842-altitude of a. .llquilte in lite ·meridian. OllSERVATIONS. - ------ Double altitude of a Aquilro. - Deg. min. sec. 113 30 40 - True central altitude. Deg. min. sec. 56 44 00 I .. atitude. Deg. mtn. sec. 41 4:J 36 ... |