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Fig. 424. Flying squirrel, Petaurista. (From a photograph.) 



Fig. 425. Marmot, Marmota. 

 (From photograph.) 



Fig. 426. Beaver, Castor. 

 (From photographs.) 



Fig. 427. Lodge and food store of the beaver. (From American Mammals, 

 by W. J. Hamilton, McGraw Hill Book Company.) 



