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Show [ 174 ] 502 ENCAMPMENT ON A MALL • 1'REAM, EAST I? THE ~·HERRA NEVADA.\ Determination of latitude .dpril 14. 184 !-altitudes of Polaris. OBSERVAT[C) '). -- --. Double allltudc::, of Pol:.Hth T tmc f chronometer. --- De g. mm. sec h. 1run. .~f'l~ 68 16 :30 7 l 1 03 68 15 iO !2 :H 68 13 50 1 oz 68 13 30 t1 !1 ~) 68 13 to 16 07 68 12 tO 1.1 ~4 6 lC) 50 l8 57 68 10 10 20 l 68 09 25 2l If!} 68 Oil 25 2:1 03 (nrl.c"{ error = + :)0 sec. RESULT OF CALCULAT(O~. True altitude. Mean tunc. Latttude. Deg. min. sec. h mtn. .~fC . De~. mm. sec. 31, 05 00 ~ 0:) 21 35 o:J 00 lJeterm ination of longitude, .!lpJ·il l 1, 1844-altitudes of .!lrclurus. OBSERVATION . FIRST SERlE ECO'IIiO ERIE • Double altitudes of Time of chronometer. Double .tltitudes of Time of chronometer. Arcturus. Arcturus. - 1- lt . rnin. sec. Deg. min . sec. 7 2fj 50.0 64- 42 10 2R 30.0 f) I) 26 30 h. min. sec. 7 az 53.7 31 42.0 Dtg. , rtun. sec. 62 16 15 6~ 54 20 20 41 .0 '5 18 00 30 !2.0 6() 09 45 31 39.0 6 tj 32 30 35 33.6 36 26.0 :n 22.1) 63 24- 00 63 48 30 64 1l 50 -- - fndex error + 3c) -:;pc RE ' ULT OF CALCUL.\ TION'. Mean time. Retard LongitudP.. D eg . min. Jet. 118 18 ~ . ;,. nLin. f!Cr. 0 16 24 9 h. min. sec. 18 52 503 [ 174 ] ENCAMPME T AT ROCK ~PHI t;. Determination of latilllde, .!lprill 5, 1844-altiludes of Polaris. OOSEUVATJON Double altitudes of PolnriA. Time of chronometer. Deg. 67 67 f::7 67 67 min. 30 30 28 27 26 True altitude. Deg. mm. sec. 33 42 57 sec. 25 00 25 30 1)0 T ndcx error -== + 20 sec. UESUL'l' OF CALCULATION. Mean time. h. 7 -------- lt. min. Sfc. 03 15 nnn. 12 14 16 18 20 sec. 54 26 21 07 51 Latitude. Deg. mm. sec. :J4 41 29 Determination of lo'!lgit ude, .!lp1'il 15. 1844-alt itudes of .!lrcturus. Oll'E.RVATIONS. - Double altitudes of A rctmuA. Time of chronometer. Deg. min. sec. ft. min. sec. 63 32 25 7 25 56.5 64 12 15 27 31.0 65 04 10 29 36.0 65 50 00 31 26.5 66 14 20 3'~ 28.0 ... -- fndcx error -= + 20 sec. RESULT OF CALCULATION. Mean time. ------ sec. 07 Retard. ------ !t. min. 0 46 sec. 43.4 Longitude. Deg. mtn. sec. 118 20 0() |