8 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 'J2. 



slope, spreads out in a fan-like form toward its lower end. Seen in 

 profile, this portion of the glacier resembles a great animal sliding 

 down the sides of the broad canyon. The foot of Mons Glacier with 

 the stream flowing from beneath it is illustrated by figure ii. 



Fig. 8. — View of Mons Peak (10,114') and the upper snow fields of 

 Mons Glacier, also the cascade of the glacier over the cHffs below. The 

 summit of the peak is more than 2 miles {2i-^ km.) back of the glacier, 

 the intervening space being occupied by -a great snow field from which 

 the glacier flows. The locality is about the same as for figures 2 and 5. 

 Photograph by Mr. and Mrs. C. D. Walcott, 1919. 



These views (figs. 5, 8, 9, 10 and 11 ) illustrate a glacier from its 

 neve at the base of Mons Peak (fig'. 8) to its foot (fig. n ). where 

 the retreating ice is making its stand against the force of the summer 

 sun and wind. 



Geological section. — The geological section, which is beautifully 

 exposed in the mountain ridge of figure i, is of such interest that it 

 is included in this brief account of the exploration in the vicinity of 



