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Show [ 174 J 406 F.NCAMPMENT ON RO BAlJX, OH. REED RIVER Detcnni~tation of tong it udc, ~-S. yepl~1nher 15, 18,13-ullitu.des of t/,e SU'l. 0 B }<; H \ T I 0 N S. l'lllST S l;itlES. Double ~dtitudcs of the \ Time of chronom t r. sun's hnver limlJ. I Double allilmlc~ of tho \ ~;un\; lower lintb. Time of chronometer. , -- Deg. 47 47 47 46 46 min. sec. :H ~f) 15 00 02 30 48 on 25 lO Mean time. h. mm. sec. 3 58 00 ft. 1 5 1}/.Ul, 68 59 ()0 00 OL IJt·r. M.S :39.2 14 0 55.0 59.5 I lJcg . min. ser. 46 05 10 45 50 30 45 39 '20 4/l l8 lO 115 01 50 Index error = + miu. :38 t:~oc. RE 'UI~'l' OF CALCULATION. Advance. !t. min. sec. L 04 21.8 lt. mm. ree. 5 02 56.0 03 383 04 09.8 05 10.0 05 56.0 Longitude. Deg. mm. see. l1 ~ 15 04 --------------------~------------- -------~--- Determination of latitude, Sept. 15, 1843--me·ridian altitude of a. .flquilr!. OllSERVATION '. Double altitud('s of a Aquil!e. Time of chronometer. De g. mtn. 11:.! 22 112 24 ll!.! 26 112 2~ 112 21 112 •..'). 112 27 11~ 26 112 24 112 22 True altitude. Deg. 56 min. 15 sec. 2.0 sec. 30 10 40 40 40 30 20 10 40 30 ---·----- - ~·---------' It. mtn.. sec. Index error .... + 1 min. :H sec. 1-lE ' UJ/1' OF CALCULA'riON. Apparent timo of transit. !t. 9 mtn. OS sec. 51 9 Ot 20 03 21 06 01 08 45 10 Ol 11 07 13 26 14 62 16 08 17 31 Deg. 42 Latitude. min. 13 Btl• 26 407 [ 174 J ENCAMPMF. 'J' 0 • HO }'AU OI> 1'~1:'1) . _, • , " ud. RIVER . !Jetermination of Latitudt>, Septembe1• 1 ,r,: , l ·1v..... -a1 I I·L udcs of Pola'ris. OH F.HVATJO:N:s. Double altitudl~l'l of Polaris. T ime ftf chronometer. ------ De g. 86 85 85 Sf> 85 True nltitndo. min. sec. o:J 50 05 20 06 30 07 00 00 00 Index error = + 1 min. :34 A<'r. R}~SUL 'l' OF CALCULATION. Mcnn time. ·---------- Deg. min. :Jec. h. miu. 8 19 ser:. 42 32 5 ( 10 ----------------- ft . mi11, sec. !) 20 11 22 0!) 2:3 17 24 18 26 1~ Latitude. ---------- Deg. mm. sec. 42 12 57 ENCAMPMENT ON PANNACK RfVJ~R. Determination of longitude, Seplemoe1· 17, 1843-altiludes of the sun. OUSERVA'l'IOKS. - ----- _/· - - Doubl~ alltitudc~ of the Time of chronomcl<'r. sun s ower Inn b. Double nltitudf"s of the sun'~> lower limb. Time of chronometer. Deg. min. .~ec. 47 20 10 47 0'7 60 46 56 20 46 46 60 46 38 15 Mean timt~. ...______ lt. min. , S('C, " 52 28 h. mzn. sec. DPf'l'. mira. " ~ 54 22.0 41) 23 51 5R.3 46 12 55 :J2.5 IJ!) 59 55 !) .2 4_ ') 18 !)() 22.0 Indt•x Nror = + I min. :35 H('('. RESULT Olo' CAI.CUJ,.ATION. Advance. --·-·-------- 1 /1. min. l 04 sec. 1'1.1 ----------------~- I ec. 00 20 10 00 !t. min. sec. 4 57 07.4 67 39.4 58 16.6 58 48.0 Longitude • Dcg. ll2 mirJ. 3PC. 29 52 I • |