274 ANNUAL HECOUD OF SCIENCE AND INDUSTRY. 



sary to issue from time to time. These three classes of pub- 

 lications, together with the topographical and geological at- 

 lases, comprise the form in which the results of the Survey- 

 are to appear from time to time. Sheets 50, 58, 59, and 66 

 are executed in crayon, together with the general topograph- 

 ical sheet of the territory west of the Mississippi. A sheet 

 of conventional signs has already been added to the advance 

 edition of the atlas, and four other sheets, Nos. 45, 55, 57, 

 and 67, are ready for the lithographer. The geological atlas 

 sheets, based on atlas sheets Nos. 50, 59, 66, 68, are in the 

 hands of the lithographer, and will soon be published. These 

 fourteen sheets will illustrate the results up to the close of the 

 season of 1873. and will possibly be published before long in 

 a form for more general distribution throughout the country. 



As usual, characteristic landscape and stereoscopic nega- 

 tives of peculiar mountain forms, singular scenery, ruins, 

 specimen groups of the different Indian tribes and individu- 

 als encountered, views of the Mexican and Puebla Indian 

 habitations, etc., have been secured. 



Besides the officers in charge, the following officers and 

 civilian assistants have been engaged upon the Survey dur- 

 ing the past season : 



1st Lieutenant William L. Marshall, Corps of Engineers, Ex- 

 ecutive Officer, Party No. 1, First Division. 

 1st Lieutenant P. M. Price, Corps of Engineers, Executive Of- 

 ficer, Party No. 1, Second Division. 

 2d Lieutenant C. W.Whipple, Third L T nited States Artillery, 



Executive Officer, Main or Supply Division. 

 1st Lieutenant S. E. Blunt, Thirteenth United States Infantry, 



Executive Officer, Party No. 2, Second Division. 

 1st Lieutenant R. Birnie, Thirteenth United States Infantry, 



Executive Officer, Party No. 1, Second Division. 

 Acting Assistant-Surgeon H. C. Yarrow, U. S. A., in charge of 



Natural-History Branch. 

 " J. T.Rothrock, U.S. A., Botanist. 

 Civilian Assistant Professor E. D. Cope, Paleontologist. 



Professor C. A. White, Paleontologist. 

 John H. Clark, Astronomical Observer. 

 Dr. F. Kampf, Astronomical Observer. 

 Louis Nell, Chief of Triamrulation. 



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