190 1 



AMERICAN FORESTRY ASSOCIATION. 



-77 



GRASS UPROOTED AND SMALL VEGETATION DESTROYED BY TRAMPLING 0] Mil I P, 

 IN BLACK MESA FOREST RESERVE, ARIZONA. 



DAM FILLED WITH SILT IN TONTO BASIN, ARIZONA DRAINAGE BASIN BADLY 

 TRAMPED BY CATTLE. A DITCH HAD rHROUGH Mil Mil 



TO GET THE WATEK OVEP I 11 



