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Show r REPORT. UNITED STATES ENGINEER OFFICE, GEOGRAPHICAL SURVEYS WEST OF THE 100TH MERIDIAN, Washington, D. 0., June 30,1876. SIR : I have the honor to submit the following report upon geographical surveys west of the one hundredth meridian for the fiscal year ending June 30,1876: The States and Territories of California, Nevada, Utah, Colorado, Wyoming, New Mexico, Arizona, and Montana, have each been chosen as fields of operation for the different expeditions engaged during the years 1869,1871,1872,1873,1874, and 1875. SUMMARY OF FIELD AND OFFICE WORK. At the close of the last fiscal year, the parties for field- work were actively employed and were commanded as stated in my annual report for that year. The parties of California section disbanded at Caliente, the present terminus of the Southern Pacific Eailroad, in November, 1875, a number of the officers and assistants repairing to Washington, while Lieutenant Whipple traveled southward to Los Angeles in charge of the transportation and supplies. Lieutenant Bergland's party reached Los Angeles on return from the first trip October 4,1875, and departed again for the field'in the southern portion of the valley of the Colorado River on February 13,1876, and continued the examination of the river southward as far as Pilot Knob. Returning, he crossed the Desert and Coast ranges to Los Angeles, reaching that point May 7,1876, where, his party having disbanded, the operations of this section of the survey were concluded for the year. The parties of the Colorado section reached West Las Animas November 25, and proceeded immediately to conclude the operations of the field- season. The officers on duty with the survey were employed during office-season as follows: First Jjieut. W. L. Marshall, Corps of Engineers, in charge of field astronomical and meteorological computations, preparation of meteorological portion of Volume II, survey reports, executive report of field operations for past season, and detailed supervision of a portion of topographical plottings and reductions. First Lieut. Eric Bergland, Corps of Engineers, in charge of temporary office at Los Angeles, Cal., for plotting and reduction of the topographical and meteorological data derived from the operations of special party for determining feasibility of diverting the Colorado River for purposes of irrigation. First Lieut. W. L. Carpenter, Ninth Infantry, preparation of reports upon natural- history subjects; examination and disposition of specimens; executive report. AP. J J- A |
