The American Geologist, Vol. XXXII. 
I'late XII. 
Fig. 2. — Virw Looking up the Gorge of Leavenworth Creek. 
The sky-line on the right shows, in profile, the original, base-leveled floor of the valley. 
Fig. 3.— View from Hall's Ledge Looking up the Valley of Clear Ckhek, with 
the Devil's Gatk Gorge in the Middle Distance. 
The low ridge of granite in the foreground separates the bed of Clear creek on the right 
from the relatively low plain on which the main part of Georgetown is built. 
