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Show [ 174 J ENCAMPMf~NT ON , 'ALMON TRODT RIVER Determination of latitude, January 1 G, l 14.-(Jltitudes of Polarir. 0 B~ER VAT ION:, . Double ultitudcK of Poluri:-.. Time f chronometer. De~. mm. 77 2l 77 20 Ti' 19 77 L 77 18 77 18 77 I n 17 77 lfJ 77 15 Tru altitude. J>eg. mm. 38 38 sec. 23 St'l'. LO -10 20 50 50 25 00 10 30 50 Index error - + 44 soc. h. mm. 3 ll 13 11 15 16 17 19 20 21 23 .~ec. --·--- 29 a. m 13 32 4.3 45 59 12 37 45 OL RESULT OF CALCULATION. h. Mean time. nun. 55 sec. 01- a. m. Latitude. Df'{f- min. 39 5L su. 13 Deterrninal ion of longitude, Janua·ry l G, 1844-altitudes of .'lrcturus. lt. 3 OBSERVATION . Double altitude~; of A rcturu~ . DcK· 90 90 90 91 92 min. 06 33 57 41 lL sec. 00 00 50 :lf) 50 Tndcx: error .,. + 44 sec. Time of chronometer. !t. min. sec. 3 41 23.6 a. m. 42 35.8 13 43.0 45 38.0 17 01.0 RESULT OF CALCULATION. Mean timo. mm. 2L sec. 42 a.m. h. 0 Advance. mm. 22 sec. 2L.9 Longitude. -- - 471 [ 174 ] .eNCAMPMENT ON 'ALMON 'l'ROU'l' IUVJ•;Jt JJetermination of tongz't ude, ./u ntun·y l G, I 14- altitutles of Procyon. OUS.B ~t \' A'l'lONS. nns-r s1-:uu:s. !U:CO'NI) SEilU:S. Double altitudes of Procyon. Time of chronometer. Doul•lc altitud 'H of Pro<'yon . Time of chronometer. Deg. mrn. sec. 69 45 00 69 16 20 68 45 26 68 16 40 67 49 56 Mean time. A. min. sec. ft. 3 3 10 02 a. m. min. sec. Dt'g. 'IIHII. 26 3L.2 a.m. 67 2:3 27 52.0 67 OL 2!) 20.5 6G 39 30 44.0 66 13 32 02.0 65 19 r ndex error ~ + 44 ~;cc. IlESULT O.F <.:ALCULATION. Ad vane<'. lt. tnin. sec. () 22 20.0 sec. 50 50 LO 50 00 h. mm. sec. :3 33 15.4 34 15.0 35 22.0 36 3Lo 37 42.0 Longitude. CAMP ON A JUV BR OF THE SIERltA NJ~ VA])A. Determination of latitude, Januury 18, 1 14-altiturles of Polaris. OB 'ERVATlON ·. Double altitudes of Polari~;. De~. 75 75 76 7fi 75 75 min. 51 51 6L 53 52 53 sec. 50 15 50 00 50 00 Index error ~ + 44 s c. 'l'imr of <'hronometer. h,. min. (j 20 22 24 25 ~7 sec. 39 u. m. 25 07 39 10 31 RESULT 0~ <.:ALCULATIO~. ·- True altitud . Deg. min. 37 55 sec. 32 Mean time. h. min. sec. G 05 17 a. m. J,atitudc. Deg. 39 nun. 24 sec. 16 |