Smithsonian Report, 1941. — Walker 



Plate 3 



1. Plains pocket mouse with fur in good condition as the result of cleaning her coat in very fine dry sand 











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2. Plains pocket mouse with fur beginning to show bad condition, owing to Inning been (jn coarse sawdust 

 for 72 hours. The cracked appearance in the fur is the result of the sticking together of the hairs, partly 

 by the oily secretion of the skin and partly by the resinous material in the sawdust. 



