Bui. 72, Forest Service, U. S. Dept. of Agriculture. 



Plate II. 







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/im' 



Ml 



■ > . 



^ 



^ 



Fig. 1. — Opening to the Den. 



Fig. 2. — Nine Wolf Pups in Front of the Den. 



Entrance to the Wolf Den Sho\vn in Plate I. 



