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Mineralogy and Geology. 
267 
photograph by Mr. Harris. It falls in a series of cascades at an 
angle of about 70°. At the time of my visit the volume of water 
f the valley, broken 
h side o alle 
7 ly timbered shelves, which run horizontally the whole length 
the wall. 
Rock in the Yosemite, stands on the south side of the valley, 
Pi, aha opposite Hetch-Hetchy fall; its height is 2,270 feet above 
= ey. The photograph by Mr. Harris will give some idea of 
han in any previous publication ; (4.) The still more 
"8 and ancient Devonian Flora as displayed in New 
