Bui. 1227, U. S. Dept. of Agriculture. 



Plate V. 



TOTAL 

 PROTECTION 



RODENT 



foTAL Protection 

 plot 



Prairie Dog I Cattle Grazed 

 plot plot 



B2389I; B23889; B25I88 



Wheatgrass (Agropyron smithii) from Clip Quadrats, Coconino, 



Ariz. 



Cuttings in a, &, and c made after summer grazing in the years 1919, 1921, and 1922, respectively. 



