848 



N. M. FENNEMAN 



are common a hundred yards from the edge and the steepness 

 increases as the margin is approached. Englacial drift disposed 

 in planes was found at only one point and that was in the buried 

 ice. The material incorporated here contained nothing coarser 

 than sand. Planes showing discoloration, as if by dust accumu- 

 lated on the surface, are not uncommon. In the largei crevasses 



Fig. 7 . — Stream channel showing stratification of the ice — ioo yards from front. 



these are sometimes very prominent in contrast with the clear 

 bluish ice. 



The drainage of the glacier has no special peculiarity, and in 

 this lies its chief interest, because it aids in classifying this ice 

 field with well-developed alpine glaciers. Streams are guided 

 largely by crevasses and frequently drop suddenly into the body 

 of the glacier. Pits are not uncommon ; one of these, whose 

 opening at the surface was less than ten square inches, was found 

 to be three feet deep. 



