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Show [ 174 J 418 r ENCAMPMJo!NT ON SNAKE RIVER, TWO MILES DEI.OW FI. JJING FALLfi. Determination of longitude, October l, 1843-altitudes of a. Ly?'W. 0 B "EilV ATIONS. }"1 RST SEJlU:R. SJ-:CO 0 8 ~; ILHS. Double altitm1cs of Time of chronomet<-r. Doul>h· altit mlcH of Time of chronomo({'r. a Lynn. n J.yrrc. - -- De~. 99 98 98 98 97 min. sec. /t. 21 30 10 f>6 00 !H) 20 18 10 58 30 min. sec. Del{· 1!111L. 30 21.0 91 28 3t :36.0 !)7 0() 32 3!3.0 !)G 43 33 2~.0 96 27 31 15.1 95 50 Index error ,.....,. + 1 min. 30 sec. U:ESULT 0.1!' CALCULATION. A<lvaucc Sf'l'. 15 30 !)0 20 50 ----- ft. min. 9 !lO S('('. 29 ft. min. t 01 ,<!('('. :37.7 ENCAMPMENT ON ~NAJ{E HIVEH. h. mm. 10 35 36 37 38 10 J,ongitudc Drg. 114 mm. sec. 35 12 ~ec. 42.0 42.6 45.0 31.0 11.0 Deteru~ination of latitu.de, October 2, 1843-altitudes of Polaris. onsEH. VATION • Double ultitudes of Polaris . Time of chronometer. Deg. min. 87 56 87 67 87 58 87 69 87 59 88 01 88 01 88 01 88 02 88 03 True alliludc. >--- Drg. min. sec. 1:3 59 46 sec. !t. nun. sec. 10 tO 25 48 40 27 28 10 28 !3 tO 29 47 25 3l 03 05 32 31 00 33 43 30 35 08 50 36 28 20 37 39 - ----------- 'l'hcrmomctcr 50°. Index error = + 1 min. 30 sec. RESUL'r OF CALCt""LATION. Mean time. k. mm. ser. 9 26 35 Latit.uue. --------- J)l'f{. mi11. ~u. 42 53 40 ----------------~---------------- zt19 [ 17'4 J . . ENCAMPMEN'J' ON SNAKE RIVEn Determznatwn of longitude, October 2 1843 · . l'J JtS1.' !H: It 1 E f;. Double aiLiLudcs of a Lyrre. Drg. min. ,vee. lt. 92 55 16 10 92 26 20 91 59 40 91 36 !JO 91 16 50 ' -altzlurles of o. L OJI.Sl•;RVA'I'ION ·. yra:. - •o: C'o~n s~:Jtn:s. Douhlc ultiludcs of , I l'irne of chronomct".r. a •)'rll' . •- min. Sf' C. 45 28.1 16 19.0 4 07.0 4!) l 0.() 50 06. :l nc{{. 1nin. .'lf'f'. h. 90 53 min. 40 ."/{'(' 90 29 10 !)I 09.!} 40 90 OG 20 52 19 0 !) ·1G If> 5:l 21.7 89 22 00 51 22.0 fi[j 3!.0 'l' hcrmometl'r 18 °. 5. fn<ll'x error ... + 1 min. :w S<'i. RESULT OF' CALCULATION. Mean time. lt. min. 9 45 !ICC. 23 ''· l Advance. min 0[) sec. ] 5.:3 Longitude. Drg. min. 111 !)3 8(C 04 ENCAMPME~'f ~·r '!'HE FOHD WHEHE 'rilE nOAD CR08RE:-.; SNAKE RIVER .Determznatwn of latitude, Octobc'r 3 ' 1813-a ltt' t u d es o,Jr Polart.s . OBSERVATION • Double altitudcH of Polari>l, Time of chronometer. Dex. min. 87 50 87 51 87 62 87 53 87 54 87 65 87 56 87 57 87 1)8 87 59 .___'I_' ru_e ultib.tdc. .... Df'g. min.. 8ec 43 57 15 sec. ft. 10 no 10 nO 50 10 20 45 ao 30 25 Iudt•x error .., + 1 min. 30 sec . RERUI.'l' Ol' CALCULATION. Mean tim£•.' h. min lif'C 9 05 57 min. ace. 04 19 05 52 07 14 09 03 10 31 11 58 13 38 }I) 24 17 0 18 54 I~ntitudc. Dt>~. min. /t/'1". 4~ 55 58 |
