GEOGRAPHICAL REPORT OF HENRY GANNETT, M. E., TOPOG- 

 RAPHER DIRECTING MIDDLE DIVISION. 



INTRODUCTORY LETTER. 



Sm: I have the honor to submit to you herewith rny report on the 

 geographical work of the middle division of the survey during the 

 season of 1874. 



The party in my charge was composed as follows : Dr. A. C. Peale, 

 geologist; Fred. D. Owen, assistant topographer; Frank Kellogg and 

 Arch. R. Balloch, general assistants, with two packers and a cook. 



The party left Denver on July 21, and proceeded to the field of work 

 via Fairplay, Mosquito Pass, and Tennessee Pass, returning by the 

 Southern route, via Cochetopa Pass, San Luis Valley, Poncho Pass, and 

 Canon City, reaching Denver November 10. 



The area worked is five thousand three hundred square miles, in doing 

 which eighty-six stations were occupied, or an average of one in every 

 8 miles. 



I would here express my thanks to Mr. H. F. Bond, Indian agent at 

 ''■he Los Pinos agency, for assistance rendered by him during the season. 

 Very respectfully, your obedient servant, 



HENRY GANNETT. 



Dr. F. V. Hoyden, 



United States Geologist. 



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