U. S. GEOGRAPHICAL SURVEYS WEST OF THE ONE HUNDREDTH MERIDIAN. 

 1st Lieut. GEO. M. WHEELER, Corps of Engineers, U. S. Army, in charge. 



CHAPTER I. 



2STOTBS 



COLORADO. 



J. T. ROTHROCK, 



SURGEON AND BOTANIST TO THE EXPEDITIONS OF 1873, 1874. AND 1875. 



1 BOT 



