| OCR Text |
Show [ 174 J 6b8 659 [ 1 7'·i J ENCA\1PMl~N'l' 0 TJJE I.l~FT llANK Ol•, rr ru~ PL,\TTE RIVER, A1' TUF. .1\IOUTH ()l<' r·;L}( JIOHN 1\lVI~lt ' ENCAMPM1·~NT ON TIJE J.EFT DANK 01'' 'J'III1 PLATTE HIVER /JeterfJ1ination of time, St'plernbcr 28, 1842-altitur/c ofo. Lyt·w. IJelermination of latitudt•, St•phmber 29, 18,12-altiturlr~ (if Polari.~. Oll~E RVA'l'ION~ . OH~ER" ATJO !::>. -. ·-· Uouble nlLitud of u Lynu. 1,imo of chrouomrtcr. Double nltitmlc of PolariH. '1'imr of chronorrwtrr. -- /Je~. mtn. sec. 99 10 '20 98 32 10 97 48 20 96 52 40 9G 09 30 lt. rnm.. sec. 11 21, 36.0 It 26 23.7 11 28 23.0 11 30 fi8. 0 11 32 51).0 Thermometer 51°. Deg. nun. src. sa II. mm. 8fl'. 110 :30 10 21 37 83 1.2 35 10 21 20 83 41 10 10 26 37 s:J 45 05 10 28 4G 83 4f.l 00 JO :30 51 83 18 20 10 3:3 19 83 60 40 10 35 24 83 62 45 10 39 41 83 53 50 10 11 22 83 51 40 10 43 18 Index error ~. - 40 soc. - - - Thcrmonwtcr 10°. RESUI.T OF' CALCULATION. Index: error - - 1 miu. 38 sec. - ----------;--------------:------- Mean time. Advance. Longitude ~ESULT OI<' CALCULATION. lt. mm. sec. 9 39 25 h. mzn. sec. 1 49 15 -------- ·----------~----------~--------~-------------------- I True altitude. Mcotn time. Latitude. Deg. min. sec. 41 52 05 h. mi11. sec. 8 43 66 Deg. min. sec. 41 02 J 5 ------- ----"'""-- |
