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Show • • [ 174 J 652 'ENCAMPMENT ON THE J,EFT BANK OF I'LA TTF. IUVETI, 'T'EN MTJ.E~ BELOW . (:HAND l~L <\N D. Determination of linu, September 21, l 12--a/titudc of /lrcluru~ . OHS.B ltVA'riON • nnwr HE IIJ F.s. fH. I'ON I) 'iF.IIH.I4 . I oul>lt· alt1tuth' of Arrturul' Timt• of l'hronowf'tcr. I DouiJII' alt itU<ll' of Arc- 1'iml' of "hron::r Otg. 1/t ill . ~t'r . 50 55 •H) 11 ' 03 Hi :w 01 50 Mean time. Jhg. min. sec. ~, 07 61 lt . 171111. !)!', 57 9 00 RE' turus. M'c. J)r~. min. O!l.5 17 Of> 16 7 II 4() I G !ltl.O I' 45 .Hi LT 0~' CALCULATION. Au vane•·· ft . v•m. .'ll'r. I 53 29 u c. 25 !)5 50 II. !) 9 !) min, 0:3 Of! 07 Longitwlc. , ec. O:J.7 15.0 01.0 Dcle'i'm. inatio~~, of latitude, September 21, 1842 -altitude of Polaris ODSER V.ATIO~ ~. Double altitUih' of Polari~. Tim(' of chronomPtrr. Dr g. ftltH . Sf' C. ! •. m m. sec. 2 25 60 !) 10 56 2 27 45 12 51 2 :l9 20 9 la 43 82 31 40 9 1 07 82 3<1 00 9 20 fi3 82 35 II> 9 22 :.JO 82 37 45 9 24 15 2 37 40 9 25 47 82 40 00 9 28 13 2 4L 00 0 30 09 ,_. ~- Thermometer !; l 0 • RESULT OF CALCULATION. - - - 'J'rne t\ltituuc. Mean time. Latitude. h.. sec. Deg. min. Deg. mm. ~ec. mtn. 05 41 15 ll 7 27 61 41 - ------- 653 [ 174 J NOON HAL'I' A.T THE "\i:OUTH OP A SMALL CREEK ON THE l.Ef'T UA K OF 'l'IIE PJ~AT'I'E RfVER Determination of lal'ilurle, SPplernber 23, 1842-altitude of !lie sun zn the meridian. Double nlti tu~l c nf th sun't-~ lO\-\<Cr limb. De[J. min. 96 37 sec. 05 OBSJ<~H VAT IONS. ---- ---- Tnw central altitude. Latitude. ------1-------------------- Deg. min. 48 3:J Sf' c. 04- De g. 41 nun. 20 sec. 20 -....,..--~-----.....!.--___ ____ ~ -- - Index error == - 1 min. 32 Hec. Thermometer 80°. ENCAMPMB 1' ON THE LKt'T BANK OF 'rHE PLATTE RIVER, NEAU THE LOUP FORK. Determination of latitude, Seplembe·r 23, 1842-altitudt> of a.. 7quilre in the m.eridian. ODS.Bn VATTON '· ------- Double altitude of a Aquilro. True altitmlc. Latitude. Deg. min. .ttec. 41 22 52 Deg. min. sec. 114 12 10 Deg. nun. sec. 57 04 43 Index error = - 1 min. 32 sec. |