PLATE 16 



(I. General view of lower jiart of Vosemite Valley as taken looking east from the Big 

 Oak Flat lioad in winter. At the left a talus slope clothed with golden oak; below, 

 the forest on the A^alley floor, comprising yellow pine, sugar pine, and black oak, and, 

 in streamside tracts, black cottonwood. These areas constitute markedly differing asso- 

 ciations in the Transition Zone. 



b. Meadow on floor of Yosemite Valley near Rocky Point, as seen in June; Tran- 

 sition Zone. Here were trapped the Yosemite Mole, Yosemite Shrew, Y^'osemite Meadow 

 Mouse, and Yosemite Pocket Gopher. The trees at the right, black cottonwoods, harbored 

 such birds as the Willow Woodpecker, Modoc Woodpecker, California Yellow Warl>ler, 

 and Western Warbling Vireo. 



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