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Show 12 Professor H. B. Herr have been engaged- Dr. Kampf during the entire year; Mr. Marryatt from July 1, 1873, to October 8, 1873, when his death occurred, at Bozeman, Montana; Mr. Clark from July 1 to April 1, 1874; Professor Safford for seven months; Professor Herr until August 25, 1873. Assistants Louis Nell, Gilbert Thompson, J. J. Young, E. J. Sommer, Max E. Schmidt, E. J. Ainsworth, and, at times, Francis Klett and Edgar Schroeder have, under direction of the officers in charge, conducted field topographical work, and during the winter have been engaged in the reduction of their notes and plottings. Assistant F. M. Lee has been employed during the entire year in the reduction of barometrical observations taken by the several parties. In the reduction and presentation of topography Messrs. Weyss and Herman have been engaged during the whole 3 ear, and Messrs. Lang, Philp, and Aquirre a portion thereof. In the natural history branch Assistants H. W. Henshaw, George M. Keasby, and John Wolf were employed in making collections in the field, and Mr. Heushaw, during the winter, classified and arranged specimens collected. Mr. T. H. O'Sullivan, photographer, secured forty- twolandscape views and one hundred and four stereoscopic views, a portion of which will be published. Mr. A. H. Wyant, artist, traveled with the photographic party, and made studies of some scenes in. the Canon de Chelle, one of which he proposes to put on canvas when his health will permit. Assistants G. K. Gilbert, Prof. John J. Stevenson, E. E. Howell, andx Oscar Loew were employed during tbe year in geological researches in the field, and compilation of results during the wiuter. Dr. Loew has made many interesting analyses regarding minerals, soils, & c. In the general duties pertaining to the work, both in the field and the office, I have been ably and faithfully assisted by Assistants W. D. Wheeler and J. B. Minick. I have again the agreeable duty of reporting the courtesies extended to the survey by the officers of the Western Union Telegraph Company, and the use of wires of that company over lines extending from Salt Lake City westward to Virginia City, New, eastward to Cheyenne, and thence southward to Santa Fe; and northward from Ogdeu, Utah, to Helena, Mont. Mr. Hibbard, the superintendent at Salt Lake City, made, with commendable zeal, all the arrangements necessary to carry out this extended programme, in which he was seconded by Mr. Woodward, manager at Denver, Colo.; as likewise the operators at Cheyenne, and at all the points from whence signals were sent and received. The Atlantic and Pacific Telegraph Company extended also the free use of their lines. Messages for longitudinal difference were also sent over the lines of the Deseret Telegraph Company from Richfield, Utah, by Lieutenant Hoxie. Mr. Thomas Largey afforded the use of his lines from Helena to Bozeman, Mont., at reduced rates. We were thereby# enabled to fix the geographical position of this important point agreeably to the wishes of Bvt. Maj. Gen. E. O. C. Ord, commanding the Department of the Platte, it beiug one of the extremities of the routes surveyed by Capt. William A. Jones, Corps of Engineers, from the Union Pacific Kail road to the head- waters of the Yellowstone, and beyond. Longitude connection was made between the observatory at Ogdeu, Utah, and that of the United States lake survey at Detroit, Mich.; Maj. C B. Comstock, Corps of Engiueers, detailing at the Detroit end of the line Assistant O. B. Wheeler for that purpose. |