IX* 
Southwestern Colorado. 
XIII. 
Central Colorado. 
X. 
Southern Central Colorado. 
XIV. 
Western Colorado* 
XT. 
Northwestern Colorado* 
XV. 
Southwestern Colorado 
XII* 
Northern Central Colorado* 
XVI. 
Southern Central Colorado 
XVII & XVII I* Geological Sections 
XIX 8s XX* Panoramic Views* " (Page 66) 
(Appendix to the Report of the Secretary -- The Work of 
the United States Geological and Geographical Survey of 
the Territories, Under the Direction of Prof. F. V* Hayden, 
During the Season of 1877* ) 
