SMITHSONIAN MISCELLANEOUS 
COLLECTIONS 
VOL. 03 
isbaum, 
L 
iN 
by 
1 
depression, in the rocky floor of the mesa-top ; 
raph 
o 
Cool 
y chiefly a natural 
Photo 
looking southward. 
probabl 
reservoir, 
-Smaller 
58. 
Fic. 
