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Show 1212 REPORT OF THE CHIEF OF ENGINEERS. oonnected with the office, called by private business, contributes no longer his valuable labors in western geology, having left the country for Europe f6r a limited period. Dr. Oscar Loew, whose industry in many fields of scientific inquiry are evidenced by his reports, returns to his home in Germany. His large enthusiasm and commendable energy justifies the hope that he may forego any prolonged professional undertaking there, and return to this country to continue his labors. The services of Frank Carpenter terminated when he left the United States for the purpose of joining in the surveys uow being prosecuted by Americans in Brazil. Mr. George M. Lockwood, connected with the work since 1873, upon appointment to the chief clerkship of the Paten Office, concluded his service here. The only appointments made during the year, except as to minor positions, are those of Mr. John A. Church, mining engineer, now engaged in an examination of the mining affairs about the Cotnstock Lode, and Mr. E. T. Gnnter, who accompanies the party of Lieutenant Bergland for the field season. Dr. J. T. Rothrock lias been engaged during the year in the completion of his botanical report, which, in connection with the special reports of several scientific gentlemen, will make the body of volume vi. Prof. F. W. Putnam, without additional compensation, continues his work upon the archaeological collections placed in his hands, and brings toward completion the manuscript for volume vii of the quarto reports. Four general- service clerks have been enlisted, who are called upon, in addition to frequent clerical duty, to assist iu the tracing and draughting of maps, and iu the field for topographical observations. 1 desire to recognize the cheerful assistance frequently exteuded by the officers of the supply department of the Army in facilitating the progress of the work, aud to others, officers of the Government aud individuals, who have shown willingness to aid, either directly in the objects songht, or by appreciation of the results obtained. The following list notes certain of the more prominent features of the field and office work: . FIELD. JSextant- latitnde stations 74 Bases measured 2 Triangles about bases measured 50 Main triangulation- stations occupied 64 Secondary triangulation- stations 80 Station on meanders 5,115 Three- point stations occupied 765 Camps made 317 Miles meandered 4,379.48 Magnetic variations observed 208 Monuments built 168 Cistern- barometer stations occupied 749 Aneroid- stations occupied 3,804 Mining- camps visited 15 Mineral and thermal springs noted 16 Mammals, specimens collected 13 Birds, specimens collected 109 Reptiles, lots collected 10 Fishes, lots collected , 9 Insects, lots collected 31 Shells, lots collected 2 OFFICE. Astronomical positions computed 46 Stations adjasted by method of least squares 93 |