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Show [ 17 -1 J GOG • ENCAMPMENT AT ST. V RATN'~ P'i'lHT, FIOUTH ~bRK OY PJ. ·\TTE RIVER, 5,(1!» FEET ABOV.l'~ THE I .. l'~V EI. OJi" THE OtJ£,p OP' MEXICO. • Determination of longitude, July ll, 1842-allitude of t!te sun. OilSE R VATIONS. l"IIl"T SflRIJ!S . liJ&COND 8)tRil<IJ, Double altitudu of the Time of chronometC'r. sun's lower limb. Doul-lle altit~do of tl1e Time of chronometer. sun•s lowor lit~b. De g. min. 8('(', ''· mm. ser.. De g. 6a 63 54 54- 55 min. ~:ec . 00 00 36 65 17 20 h. m.m. sec. - 60 50 6l fit 62 Ol 10 :34 50 OL 05 2R 10 02 55 Mean time. lt. mz.n. .~ec. 7 11 51 9 9 9 9 9 18 23 19 52 21 02 22 1 :J 48 15 23 45 21 30 Index error = + 15 sec. flESULT OF CALCUL ATION. Advance. h. mzn. 2 13 sec. 2Z ~ 26 9 27 9 29 9 31 9 32 Longitude. Dep;. 105 min. 45 17.0 5:1.6 10.0 02.0 30.0 sec. 13 Deterrninalion of longilttde, •July 12, 1842- altilu.de of tile su.n. ODSERVATIONS. -- Fllt~T 'l J-: IIJES. S&I'OND !IBill);lf, I -- -- -- -- - Douhl<' altJtUd() of tlll' Time of chronometer. Doublo altitude of tho Time of chronometer. sun's lower limb. suu's lower limb. Dl,,.,. min. .'iCC. .... . "· T1L/11 , srr . Drg . ffl/11 . stc. h. min. se~. 62 !l :J 10 9 !;[ 6L 66 09 :w 10 Ol :w.o 63 27 20 9 f>l 13 67 09 30 JO 04 65 5 ():J 57 00 9 5!l 32 64 18 00 9 57 45 I - 607 [ 17-l ] ENCAMPMg;xT ON CROW CREEK. Deter min at ion of !ali Iurie, Jul!f 1 ~, I 12-al/ it utle of Polttri \', Oll ' ERVATlO:'IlS. Double altitude of PolariH. Time of chronometer. " DP~. 11't'11 , 79 79 79 --- True altitude. Dw. n, in. .'II'C. 39 50 13 :3:> 4L 4.5 scr. lt. =~o 1 l 10 11 40 11 Inti •x error = + 7 sec. lt.Jo;SUJ.T OJ.' CAJ,CUJ.ATION. Mean time. h. min. sec. 0 25 :ll ~ttin. sec. :H 28 3.1 29 t1l 24- I.atitudc De:;. mtn. sec. 40 42 00 Determination of longiludP, July 12, 18-12- altitude of a. .!lquilte. OJJSE HVATJON .1'1 ll!iT St:111 }; R. Double altitude Aquilre. Time of rhronomct('r. Double altitude of a Time of chronometer. De~. m n . s:t 15 81 38 - Sf' C. 20 30 Mean time. It, min. ,'I('C. 9 42 53 h. 1 I 11 Aquilw. nun. ser. Dt!,~- min. 49 47 a.; :lG 5:~ 58 86 26 HESULT 01•' CA LCULATION. Advance. lt. min. 2 12 . ~cc . 12 src. 30 10 lt. rmn. 11 fi7 11 5!> -- Longitude. De~. 105 111 in. sec . :J;} 27 ~-- .'1 c. 01 36 |