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Show 100 Observations and computations for latitude of Laramie, Wyo.- Continued. DECEMBER 17, 1872. Number of star. 657 666 695 752 785 863 872 948 980 1017 1024 1035 1052 1062 1095 1133 1140 1204 1221 1238 1261 1286 1316 Micrometer-readings. t. d. 19 25.2 19 16.0 18 14.0 18 41.0 17 75.2 SI 56.8 3 14.2 19 82.3 19 38.0 11 49.0 26 52.0 18 17.0 25 40.0 20 53.0 11 76.0 30 92.4 6 66.7 12 27.5 25 43.0 11 6.8 23 90.5 13 36.7 23 65.8 Level. N. d. iao ii' 6 16.5 30.0 26.0 10.0 23.5 33.0 iao ii' 6 1& 5 25.0 19.0 20.0 31.0 26.0 37.0 16.0 13.0 23.0 42.0 S. d. 20.0 26.0 25.0 14.5 17.5 32.5 17.5 6.0 21.0 27.0 21.0 15.0 20.0 18.5 8.0 14.5 3.0 22.0 25.0 15.0 - 4.0 Remarks. 35 « late . .. Half- sum of declination. o / » 41 19 31.0 19 2& 7 19 11.1 3 11.3 18 32.0 11 9.3 15 29.0 21 21.4 14 16.6 6 11.0 25 25.7 12 19.2 23 55.9 Corrections. Micrometer and refr. - 0 34.6 - 0 31.7 - 0 20.5 + 15 45.6 + 0 13.8 + 7 47.1 + 3 27.6 - 2 31.4 + 4 32.6 + 12 33.9 - 6 4a8 + 6 39.0 - 5 19.8 Level. . // - 4.4 - 4.4 + 1.9 - 3.8 + 9.0 \ - 4.9 - 4.9 + 2.1 + 2.1 + 6.7 + 12.5 - 4.9 + 14.8 Meridian. + 0.1 Latitude. o / " 41 18 52.0 52.6 52.5 53.2 54.8 51.5 51.7 52.1 51.3 51.6 49.4 53.3 50.9 Resulting astronomical co- ordinates. The following table contains tho daily means for latitude: 1872. No. ofobs. Mean latitude obtained. O I II December 6 18 411852.43 7 13 51.50 8 24 51.93 11 21 51.83 13 17 51.81 15 40 51.46 17 22 51.79 Tho mean of the daily results gives 51". P2; tho mean of all observations made, 51". 78. Adopted latitude 41° 18' 51". 80 + 0". 08 Longitude 7 « > 2- 22-. 24 or 105 © 35* 33". 60 west Of Greenwich. 1 54" 10M2 or 28° 32' 31". 80 west of Washington The following points are proposed for occupation as main astronomical stations during the field- season of 1374: 1. Las Yegas, N. Mex. 2. Cimarron, N. Mex. 3. Sidney Barracks, Neb. 4. Julesburgh, Neb. 5. Crossing of the Union Pacific Railroad by the one- hundredth meridian, or at the North Platte station, Nebraska. The Above will be sufficient during the coming year to answer all the wants experienced in checking belts of triangles to be extended over the area to be surveyed, and will continue the work upon the astronomical base. |