136 THE U. S. GEOLOGICAL SURVEY 



18 U. S. Dept. of the interior. Geological and geographi- 



cal surveys . . . report of Professor Hayden upon 

 geological and geographical surveys. April 19, 1878. 

 [Washington Govt, print, off., 1878] 22 p. fold. map. 

 (45th Cong., 2d sess. House. Ex. doc. no. 81) 



Serial no. 1809 



19 Geographical and geological survey of the Rocky 



Mountain region. Geological and geographical sur- 

 veys. A report of Professor Powell in regard to sur- 

 veys, in response to a resolution of the House of Rep- 

 resentatives . . . Washington, Govt, print, off., 1878. 

 19 p. fold. map. (45th Cong., 2d sess. House. Ex. 

 Doc. no. 80) Serial no. 1809 



20 Report on the methods of surveying the pub- 

 lic domain ... at the request of the National acad- 

 emy of sciences. By J. W. Powell, 1878. Washing- 

 ton, Govt, print, off., 1878. 16 p. 



21 Report on the Geographical and geological 



survey of the Rocky Mountain region, by J. W. 

 Powell. Washington, Govt, print, off., 1877. 19 p. 



22 Geographical surveys west of the 100th meridian. 



Annual report . . . [1873-1884J by George M. 

 Wheeler, captain corps of engineers, U. S, A. Wash- 

 ington, Govt, print, off., 1873-1884. 12 v. 

 Reports are from Appendices to the Annual reports of 

 the U. S. Chief of engineers for 1873-1884. 



23 Report upon United States Geographical 



surveys west of the one hundredth meridian, in charge 

 of First Lieut. Geo. M. Wheeler . . . under the direc- 

 tion of the Chief of engineers, U. S. army. Washing- 

 ton, Govt, print, off., 1875-1889. 7 v. in 8. 



24 U. S. Geological and geographical survey of the ter- 

 ritories. [ist]-i2th annual report of the United 

 States Geological and geographical survey of the ter- 

 ritories ... By F. V. Hayden, United States geolo- 



