Bui. 25, Div. of Agrostology. U S Dept. of Agriculture. 



Plate XXI. 



Fig. 1.— The Range, 25 Miles Southeast of Tucson, Ariz., showing its Condition 

 EARLY in April, 1901. Only a few small, scattered Annual Weeds present. 



From a photograph by D. Griffiths. 





.IM 





Fig. 2.^Along the Right of Way of the Railroad near Benson, Ariz., showinc 

 THE Condition of the Grass under Protection. 



From a photograph by D. Urithths. 



