Report of the exploring expedition to the Rocky Mountains in the year 1842, and to Oregon and north California in the years 1843-44 . FIRST SERIES. Double altitude of thesuns lower limb. Beg. 11 48484949 28420009 Time of chronometer. SECOND SERIES. Double altitude of thesuns lower limb. Dee JVC*,. 4949494949 Index error = — 1 min. 35 see. Time of chronometer. h. min. sec. 10 13 10 14 10 14 10 14 10 15 Mean time. RESULT OF CALCULATION. Advance. h. min.
Report of the exploring expedition to the Rocky Mountains in the year 1842, and to Oregon and north California in the years 1843-44 . FIRST SERIES. Double altitude of thesuns lower limb. Beg. 11 48484949 28420009 Time of chronometer. SECOND SERIES. Double altitude of thesuns lower limb. Dee JVC*,. 4949494949 Index error = — 1 min. 35 see. Time of chronometer. h. min. sec. 10 13 10 14 10 14 10 14 10 15 Mean time. RESULT OF CALCULATION. Advance. h. 49 sec. Longitude. Drg. min. 47 46 C 174 ] 0G2 E^S SSSgtS 7iWB S&JSSBBSr D termination of latitude, October 4, M2-»uns altitude in the me- vidian. OBSERVATIONS. Double altitude of the suns lower limb. Z)ej?. min. sec 83 20 10 88 25 30 88 25 50 88 26 45 88 26 45 88 27 25 88 26 40 88 25 00 88 25 45 88 24 25 88 22 40 88 21 40 88 19 30 Time of chronometer. h. min. nee. 1 28 21 1 33 23 1 34 14 1 35 27 1 38 10 1 40 08 1 41 47 1 42 23 1 43 06 1 44 59 1 46 28 1 47 21 1 48 * 44 RESULT OF CALCULATION. True >j83 [ »74] ENCAMPMENT ON THE LEFT BANK OF MISSOURI RIVER, OPPOSITE TO THERIGHT BANK OF THE MOUTH OF THE PLATTE RIVER. Determination of latitude, October 4, 1842—altitude of Polaris. OBSERVATIONS. Double altitude of Polaris. Deg. min. sec. 84 11 10 84 11 50 84 14 5i> 84 16 30 84 18 25 84 20 00 84 20 25 81 21 30 84 23 40 84 24 50 Time of chronometer. sec. 20 26 31 47 54 48 39 54 18 15 Thermometer 63°.Index error = — 1 min. 21 sec RESULT OF CALCULATION. True altitude. Mean time. Latitude. Deg. min. 07 22 h. min. 13 17 Deg. min. 02 12 [ 174 ] 6G4 ENCAMPMENT ON THE RIOHT BANK OF THE MISSOURI of latitude, October 5, 1842—altitude of Polaris. OBSERVATIONS. Double altitude of Polaris. )et[. min. sec 82 28 ? 00 82 30 00 82 32 40 82 35 10 82 37 40 Time of chronometer. h. min. sec. 9 37 28
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Keywords: ., bookauthorunitedstatesarmycorps, bookcentury1800, bookdecade1840
