Bul. 1227, U. S. Dept. of Agriculture. PLATE VI. 
TotaL Protection! Prairie Doc | Carte GRAZED 
PLOT PLOT 
Fic. |.—DROPSEED (SPOROBOLUS CRYPTANDRUS) 
CLIPPINGS MADE IN FALL AT COCONINO, ARIZ. 
Prairie dogs here had grazed this grass even mors closely than had 
cattle. 
ToTAL PROTECTION Prairie Doc | Carrie GRAZED 
PLOT. 2227 PLOT. | a PLOT 
625190 
Fic. 2.—FALL CLIPPINGS OF BLUE GRAMA (BOUTE- 
LOUA GRACILIS) MADE AT WILLIAMS, ARIZ. 
The piles labeled ‘‘cattle grazed plot’’ are from the open areas, 
where both cattle and prairie dogs grazed. 
DROPSEED AND BLUE GRAMA FROM CLIP 
QUADRATS, 1922. 
