The following are the results from the observations at the observatory near the junction of the Gila and Colorado: IV.-Observations for latitude at Observatory near the junction of the Gila and Colorado rivers : By Lieut. A. W. Whipple. V.-Triangulation by which the observed latitude and longitude of Camp Riley was transferred to the Initial Point of the boundary on the Pacific: By Major Emory. Calculation of the Geographical Position of the Initial Point. Azimuth of the line from east base to initial point determined by measurement of angle made with meridian of the observatory, and also by various measurements of the elongations of Polaris Counting from the south towards the west, 24° 31' 31". Latitude of east base situated precisely in the meridian of observatory at Camp Riley, and determined, by direct measurement, to be south of it 1".2; north latitude, 32° 35′ 42′′.33. = East base to initial point K 7540.59 metres, H 32° 35' 42".33. P117° 03′ 16′′.5; Z= 24° 31′ 31′′. 1st term H....................... 32° 35′ 42′′.33 2d term H......... Calculation of the Geographical Position of Station "West Base.” Measured azimuth of base line = Z = 61° 57′ 28′′.5. Base line = K = 4536.69 metres. Log. K....... =3.6567391 1' 09".23 Log. 8.5093882 N. sin. 1" |