Smithsonian Report. 1941. — Walker 



Plate 6 



1. Woodchuek or marmot that was almost nudr lor si\(ral years, apparently because of a dietary deficiency. 

 After 4 months on a suitable diet it grew a heavy coat of hair. Photograph by C. P. Richter. 



2. Pinche tamarin in glass-fronted cage in small-mammal house, National Zoological Park. 



