PLATE 16 



a. General view of lower i)art of Yosemite Valley as taken looking east from the Big 

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

 the forest on the Valley 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 Jane ; Tran- 

 sition Zone. Here were trapped the Yosemite Mole, Yosemite Shrew, Yosemite Meadow 

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

 such birds as the Willow Woodpecker, Modoc Woodpecker, California Yellow Warbler, 

 and Western Warliling Viroo. 



676] 



