Bui. 211, U. S. Dept. of. 



Plate HI. 



* - r* K . 





^ 



;•■** 



Fig. 1.— View in the South-Central Part of New Mexico, Showing a Typical 

 Area of Open or Scattered Grasses. 



Fig. 2.— View in the Southern Part of New Mexico, Showing an Area of Per- 

 fectly Bare Soil. 



