U. 8. GEOGRAPHICAL SURVEYS WEST OF THE ONE HUNDREDTH MERIDIAN. 
1st Lieut. GEO. M. WHEELER, Corps oF ENGINEERS, U. 8. ARMY, IN CHARGE. 
CHAPTER 1. 
OX 8 28 Be Sh 
ON 
COLORADO. 
BY 
J. T. ROTHROCK, 
SURGEON AND BOTANIST TO THE EXPEDITIONS OF 1873, 1874, AND 1875, 
1 BOT 1 
