OCR Text |
Show [ 17-i J 462 ~ECOND I~NCAMPMENT ON UMMER L~l{Ed. ~I'JJ l . Dett•'rtltZ. tLal.w n oflolt·l ud e) . J)ecernber 18, 184:3- ·dtttu es oJ u arL&. OH ' }; HV A'l'IONS. ----------------------- Oou hl«' altit Utkti of Polaris. Tim of chronometer. / )('g. ntin . ·'<c. h. lfltll . sec. 88 27 00 8 02 20 f!H '1.7 40 o:J 50 H'l '.1-7 35 On 00 1"8 27 40 ()(j 15 07 :38 A~ 27 30 Htl 21 10 08 55 HH 27 50 10 11 SA 27 ,, !) 1 1 17 HH 2'1 ~u, 12 '},5 Ho 27 40 13 4 .'), lndr\. error = + l min. 37 H<'<'· HESUl.T OF <.:ALCULATlON. True altitno<'· \tcnn tm1r. Lat1tu<.le. 1 lr". nun. sec. 12 12 37 De~. min . W'f. lj 1 1 !3 34 h. 111in. ,<ffc. ., ~6 32 ENCAMPMENT ON CHIUSTM 1\:S LAKE. . nete'rminotion f!f'.l a/z.l ude, J)eccm be r 24 ' 1 o4 3-alt iturles of Polarzs. 0 BSEll VATIONS. lJoul,}e altitude:-; of Polari .... Time of chronometer. Dcg. min. !:!7 46 ~ 7 1G 7 4G 87 4i) 87 47 87 47 HI 47 87 47 87 47 ~ 7 4'1 T rue altitude. Deg. min. Bfc. 43 53 17 ,..,•tr. (10 20 30 40 00 15 20 40 20 15 Inuex error ..... + l min. 37 ~c. h. (j RESULT OF CALCULATION. 1\1 eon tim . /,. min. ~(C. (j 17 12 min. 48 49 60 52 !l3 54 56 5(i 57 5 Deg. 42 --- src. ()2 39 4.4 04 18 12 32 38 43 46 Latitude. min. 23 --- 4G3 [ 174 J ENCAMPMENT N CIIJUk'l'MA ' LAKE Detenuinalion of lon!{itudr, Decembn· 24, 18·13-ultitudes of a. Lyrr£. OllSERV AT JON ·• .nn T sJ;nu, . Double altitude~ of a l)yn .. Drg. mtn. C('. 56 42 30 56 18 Ju 6~ 5 20 55 37 00 5[) 17 00 --- --- Menn tlm . h. ·rnm. 'I£C. li O ~t 4 4 Tim of chrouomctcr. Double altituucA of a J.yrn'. lt. fll/1l. ' ('C. DPg. mtn. SIC. fi :31 50.1) 51 4!3 ~JO ~l(, 03. :J 54 21 00 37 08. :) 5tJ 05 15 3R 09.5 5!3 43 25 ~9 10.0 ():J ~5 :)() l nd<'X error= + 1 min. 37 flOC. HE~ ULT OJ<' r_\ LCULATlON. Au vane<'. lt. mm. ec. ( I !36 J fl . 7 Time of cluonomotcr. "· nnn. sec. t) 40 51.0 41 64.4 12 52.1 44 00.0 44 54 .0 -· li.ongitud<·. ------------------~-------------------- ------- ENCAMPMENT IN DE~EHT VAJ. .. LEY, AMO~G BL \CK ROCKY HILL . Determination of longiLUdl·, nacmoe·r 26. 1 ... 3--alh'tude of 0. Ly'nc. Double altitud Dcg. min. 4G 49 -·---- -- ----- - Mean t1mc. II. rnin. 6 :.> 1 1:/(J(. ] ~~ OllSER \.- ATlON. of t: J.,y m .. -I I Tmw of duonomct('r. h. min. () 55 sec. 18.5 --------------.-------------------------- J nd x error =- + 1 min. 40 soc. ESUL1' OF CALCULATION. h. 0 Advance. min. :-31 .~ec. 05.5 • Lont:,r:itude. ----------------l----------------~--------------~ |