Studies in the Sierra 



77 



Fig. 17 Fig. 18 



forms, magnitudes, and positions are obviously the necessary- 

 results of the internal structure and general mechanical charac- 

 ters of the rocks out of which they were made, and of the gla- 

 cial energy that has been brought to bear on them. The abun- 

 dance, therefore, of lofty angular rocks, instead of rendering 

 Yosemite unique, is the characteristic which unites it most in- 

 timately with all the other similarly situated valleys in the range. 



