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Show [ 174 J 380 E CAMPMENT ON DLACK'R l"OHK OJi' GHl~T~N RTVER Jjef('rminalinn nflongilwlr, .!lugust 17, 1 4~3-allilurlcs of the sun. 0 BS J.:HV A'l'l ONS. - Double nltitudcs of the. 'l'ime of chronometer. sun's lower limb. Double altit.u<lcs of tho Tillie of chronoml•tcr, sun'~ lower limb. D .. ~l~· min. , rc. h. rntn. sec. Dr~. mi11. Sf' C. ft. min. sec. 19 5q 55 7 z:J o:1. 1 2L 20 60 7 26 46.7 20 2~ 40 21 00 .0 2l ;33 35 2"1 22.0 20 3~ 35 24 4.2 0 21 IJ!) 50 27 56.2 20 4 ()f) 25 17.1 22 02 21) 28 41.6 21 00 10 25 52 2 22 15 20 29 15.5 IndeA error - - 30 :we. HE UL'l' OF CA LCUJ~ATJON. Mean time. Advance. Longitude. lt. nun. sec. h. 1nin. sec. JJeg. min. sec. G 13 16 1 12 3:3.2 llO 10 2 SECOND ENCAMPMl~N'f ON BLACK'S F RK OF GREEN RIVER. Detern1-ination oj' longitude, .llugusl 17, 1843-altiludes of the sun. ODSEHV ATIONS. FlllST SEJllES. Al·:CONU S~:nu:s. Double altitud()t; of tho Timo of chronometer. Double n.ltitudcs of the Time of chronometer. sun'slowor limb. sun's lower limb. h. min. sec. , G 05 53.4 06 26.6 06 65.0 07 17.2 07 49.4 Dr g. mtn. sec. h. mm. sec. Detr, rwn. sec. ~ 4.1 45 25 G 03 0 .5 4 :j t1 :l 10 44 30 40 03 16.7 4.:3 31 5G 44 ] 50 04 20.() 4:~ 21 00 44 06 10 04 51.0 4.3 12 10 43 55 00 05 22.5 43 OL 00 Index error = + 2 min. 07 sec. llESULT OF CALCULATION. Mean timC'. Advauce. Longitude. lt. m.w. sec. \ h. m tn. ~ec. 1 52 20 I 1 13 15.7 3oi [ r: 4 J RECOND ]•; 'CA:'vt'PMJo:NT 0 :\' BL1\CK'~ FOHJ <W Uln;l•; \ HIV J~R. Determina lion t J tu11giL udl', 'lut>·tt .\ l l 7, lK'l.3--altil tulcs of,/} rclurus. 0 B~I•: H V ATlONS. l'IRAT SJ.: ItlJ.:S. Double altiluuc•::; of tho Tim ' of' <'hronoml'll'r. sun's lower limb. Double allitudl's of tho 'l'imf' of chronomctrr. Hlltt 1 H lowt'r liu tb. Deg. 5!J !i9 5 5 57 min. src. t1 :3 :w 00 00 :n I!} OH 1 !) 11 10 Mean time. /1. 1n i11. scr. 9 o:J 05 lt. 10 111111. Sf'('. Drg. min. WI 11.0 5!) (ltl 0!) :JH. 0 !)1 ·10 10 t!IJ. 5 !) tl ·n II ;,(;. 0 !)'( () ~ 1 :3 CH. 0 5:3 IJ2 fndi'X error - :JJ H('C. H Jo: S U L 'l' <H' 0 A L (' U L A '1' IO N. Ad.,ancc. ;, , 11//)/ . 8f'l' . l I :3 I I.:) 81'/'. f>O tl() ,, 0 !)() 20 lt. Til ill. 10 20 21 :l l 22 2!3 Lo~tgifucl~. IJtg. n11n. ,\cr. llO ~5 Ofi M'C. 07. () 07. () IJ7.G IJ!) 1 " :~ 2 Determinat ion of latilwlt, .~l u.~· " ·'·t 17, l S 1 ~3-alliludn l{ Polaris. 0 t:'-'E 11 V .A'l'lONs . Donhle ultitudl'S of 1\>Ltris. 'l'inH' of chrorHmll'ft·r. lJrtr. 1111 Jl. .'/('('. ;,. .nin Sf'('. 82 55 10 10 :.!7 f> :l 2 f>"' lO 2'! I :3 A.'.' GB 30 :2!) '28 82 !) !) 15 :l l (ltl 2 50 50 :32 2! 83 00 ] () ;J :J IJH A:3 01 ()() :l5 ~!) 3 0:3 00 :37 l L s:J Otl 00 38 09 83 04. 1!' ;j!) 03 Index l'rror - :30 sec. ·- HESU LT 0 I<' CALC ULA'J'ION · True nllitudo. Del{. min. 41 2 sec. 1G "· 9 Mean time. min. 20 ,yr c . 08 Latitude. lJlf.f. min. 41 2!) .~cc. 53 |
