Bull. 1091, U. S. Dept. of Agriculture. 
Plate VII. 
Fig. I. — Den Excavated on Range Reserve. 
Vertical section through Den Xo. 1, of Table 1 (p. 20), showing the complex system of bur- 
rows, some of them plugged with closely packed storage (outlined in white), the depth of the 
den .and the widened chambers centrally located. 
Fig. 2. — Content of Excavated Den. 
storage content of Den Xo. 1 (Fig. 1, above), showing the separate species of plants listed in 
Table 1. The rod is 1 meter long. The large pile on the left is composed of seed-laden 
heads of crowfoot grama (Bouteloua rothrockii), the large pile on the right consists of heads of 
-ix-weeks grama {Bouteloua aristidoides), the pile of heads in the center is desert plantain 
i Plantago ignota), and the smallest heap is composed of buckwheat-bush seeds (Eriogonum 
polydadon). 
