U. 8. GEOGRAPHICAL SURVEYS WEST OF THE ONE HUNDREDTH MERIDIAN. 
ist Lrrut. GEO. M. WHEELER, Corps or ENGrveers, U. S. ARMY, IN CHARGE. 
waar lt ie 2S 
eG) le 
ON 
NHW MEXICO. 
BY 
J. T. ROTHROCK, 
SURGEON AND BOTANIST TO THE EXPEDITIONS OF 1873, 1874, AND 1875. 
