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Show REPOKT. UNITED STATES ENGINEER OFFICE, GEOGRAPHICAL SURVEYS WEST OF THE 100TH MERIDIAN, Washington, D. C, June 30,1877. SIR : I have the honor to submit the following report for the fiscal year ending June 30, 1877: Including the expeditions of 1876-' 77, the fields occupied will have embraced parts of the States and Territories of California, Oregon, Nevada, Texas, Arizona, Colorado, Idaho, Montana, New Mexico, Utah, and Wyoming. The remaining political divisions of the area west of the one- hundredth meridian, into which parties of this expedition have not entered for its survey, are the State of Kansas and the Territories of Washington and Dakota. The work so far has been directed to the most rugged and thinly- settled portions of the western mountain region. As time and means permit, the areas occupied will adjoin the sections of territory already eutered and continue toward completion the topographical survey of the entire region. SUMMARY OF FIELD AND OFFICE OPERATIONS. The expedition of 1876, in two sections, ( Colorado and California,) took the field during the month of August from Fort Lyon, Col., and Carson, Nev., respectively. Two parties were organized at Fort Lyou and four at Carson. The expedition of 1877 took the field during the early part of May, resuming the labors as left by parties of 1876 in the Colorado and Cali- * ifornia sections of the survey, aud organizing a third division to operate in portions of Utah, Idaho, and Montana, to be known as the " Utah section » of the survey. The disbandment of tha parties of the 1876 expedition was concluded at Fort Lyon, Col., and Carson, Nev., respectively, during the latter days of November, closing a season of a little less than four months, made short by want of necessary appropriations with which to enter the field during May, as is most economical and satisfactory, and marked by an activity on the part of parties that has afforded favorable results. The following changes in the personnel have occurred during the year : • Lieut. William L. Marshall, Corps of Engineers, relieved from duty August 8,1876. Lieut Samuel E. Tillman, Corps of Engineers, reported for duty August 10,1876. Lieut. Thomas W. Symons, Corps of Engineers, reported for duty August 9, in obedience to Special Order No. 161, paragraph 5, Headquarters of the Army, August 8, 1876. Professor Jules Marcou, a member of the expedition of 1875, and later |
