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Show [ 174 J 42~ ENCAMPMENT ON DIG WOOD lUVER, OR UIVn';nE DOISEE. Dclerrnination of latitude, Octobet·!, 1843-altitudes of Polaris, (with the czrcle.) • Ol~SEUVATIONS. Circle reading<;. Time of chronometer. Deg. 7/1 i71. 664 38 177 17 104 03 354 52 2 1 43 532 a3 True altitude. Deg. mm. sec. 44 21 45 sec. 20 20 30 20 40 00 h. rni~t. sec. 8 57 19 9 02 33 07 35 10 58 13 51 19 26 RE. ULT OF CALCULATION. Mean time. Latitude. h. mm. sec. Der;. min. sec. 8 02 Ol 43 35 OS Mean latitude 43 d g. S5 min. 21 sec. ECOND ENCAMPMENT ON BIG WOOD RIVER. Deterrninalion of latitude, Octobers, 1843-altitudes of Polaris, (with the sextant.) ODSERVATIONS. Double altitudes of Pollll'is. Time of chronometer. Deg. 88 88 88 88 88 88 88 88 ss 88 nun. True altitude. 35 37 38 39 41 42 43 44 46 46 Dfg. mm. sec. 41 20 29 sec. 50 00 20 40 10 10 20 40 10 20 h. 8 Index error ,.,.. + 1 min . 30 s~c.. Thermometer 50°. RESULT OF CALCULATION. Mean time. h. min. sec. 7 40 34 mt7l. 40 42 43 46 48 49 50 62 54 66 sec. 39 24 36 58 17 27 45 41 06 42 Latitude. Dcg. min. 43 61 423 [ 174 ] ECOND ENCAMPMENT ON BIG WOOD RIVER. Altitudes of Polaris, (witlt the circle,) 0 ct ob e r 8 , 1843. Circle reudinga. Time of chronometer. Deg. min. sec. lt. 177 49 50 9 355 52 20 533 56 40 712 06 20 170 17 30 RESULT OF CALCULATION. True altitude. Mean time. ----- - ----- Deg. mm. sec. 44 29 53 • h. mm. sec. 8 08 26 Mean latitude 43 deg. 40 min. 53 sec. min. sec . 04 35 09 28 12 03 14 OS 15 29 17 06 19 12 20 38 23 45 26 44 Latitude. Deg. min. «e. 43 40 .2 •• |
