UNIVERSITY OF CALIFORNIA 



[GRINNELL-STORERI PLATE 34 



Califoniiu Oi"ay Squirrel ascending the trunk of a black oak in Yoseniite X'aliey. 

 Photograi»h('<l liy Mr. Walter L. Hul)er. See deKciiption of clinil)in<i niovenieiits, in text, 

 p. 197. 



[70o] 



