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Show ENCAMPMt:NT ON TITI: J.gr'T BANI{ 01" 1'lU~ J<ANZA. HIVEH. {)efrun i nation oflalilwle, Juw lG, 1812-ullillldc (j u . • /Jquilm. OBSI<~nV ATIONS. Vlllf>T IH:llll:S. Double ultitudi' of « De g. no 51 51 Aquila•. mm. sec. 11 00 ll 20 52 20 Mean time. !t. 9 m1.n. 50 sec. 47 Titn£' of l'hronotn<'l<·r. Double nltituclo of n "· lL ll 1 1 \quilm. nnn. Sf' C. n"K· 1"11111. 26 08 6t .j:~ 0..). 42 53 29 :Jo 28 M 17 llE ' UVl' 0}' CALCULATION. lt . L Advance. "" n. 40 Sl'C. 48 sec. 40 00 40 'l'imr of chronometer lt. min. ll 32 ll 34 11 36 Longitude. Dt'g. 96 mm . . ~ec. 10 06 su. 46 42 49 • ENCAMPMBNT ON J.ITTLE VERMILLION CREEl . Dete·rminahon oJ longitude, .Iur1,e 18, 1 42-altitude of lite sun. OH. 'EHVATIONS. "n;c o~u s t:nn:s. Double nltitudl· of the I Tim(' of chrouomct<·r. ! I Double altitude of tlw Time of chronometer. lower limb of the Hun. I -- ____ II lower limb of the~ Deg. m1'n. sec. ;,. min. sec. De~. min. sec. h. rn in. sec 40 4l 00 7 10 1 l.O 39 05 00 7 14 58.0 40 19 20 7 l l :38.0 38 43 50 7 15 52.6 40 01 00 7 12 26.5 38 30 10 7 16 30 0 39 44 10 7 1 !) 11.5 38 13 f>O 7 17 11.0 39 19 10 7 11 17.5 :18 00 00 7 17 50.0 -- 591 [ 174 J r:NCAMPMEN'r ON LITTLE VERMILLION CHF.EK. JJetermirwlion oJ latitud,•, June 1 R, 1 ·12- altitude oj /'olaris ~ OllSJ.~RVATlONS. • Double altitude' of Polaris. T im<> of rhronoructcr. 1!. min. 3ec. I 0 1'1 04 10 18 08 10 51 ·1 10 53 :f4 10 65 09 Del(. rrun . sec. 75 49 00 76 50 20 75 f> l 40 76 52 20 75 53 20 ----- HE ' UL'I' Olr CA LCUJAA'l'ION. True altitude. Deg. min. sec. 37 51 12 Mean tim~' . h. mut. stc. 9 08 16 L atitudr. Drg. min. sec. 39 15 18 ENCAMPMENT ON A TR1DUTAHY Of' THE BIG vgHMll.J.lON UREEK, 1,350 FEET AH8VE TilE LEV.Ln, 01" TilE GULl" OF MEXICO. Dete·rminalion oJ ton tr£l'l.tde, Ju.ne 19, 1812- altitude of I he sun. OBSERVATION ·. - -------- Doublo altitude of the Tillie of chronometer. lower limb of the sun. Deg. min. sec. ft. min. Sl'C. 38 16 40 7 18 16.0 37 59 30 ... , 19 02.1 37 43 15 7 19 45.0 37 24 35 7 20 36 0 36 45 20 7 22 22.0 rH:COI\n MEitH; .• Double altitmi<· Qf the Time of chronomrtcr. lower limb of the l'un. DP~- 'l/ltn . ser. b. min. sec. :J6 16 40 7 23 39.0 :35 16 f>O 7 21 59.5 35 27 40 7 2{) 50.6 Tndc error = - 35 sec. Index error - 12 I:K'C. Mean timr.. h. min. .<Jf'C. 5 32 18 RESULT O:P CALCULATION. .'\Jvan e. lt. rnin. Brc. 1 12 10 Longitude. De!{. min. sec. 96 36 40 Mean time. h. min. 5 39 sec. 43 ll}~ 'ULT 01!' CALCULATION. Advance. Longiludc. h. mi11. M!l'. Dcg. mm. .~ec. 42 41 ~)t) 4 05 ---- |