262 



R. S. TAER FORMER EXTENSION OF CORNELL GLACIER. 



may be more difficult, and then, with the supply nearly cut off, the front 

 will rapidly draw back. With a slight increase in supply again the hill 

 may once more be buried by the ice and the front of the glacier can ad- 

 vance to its old position. 



Present Boundary of Cornell Glacier. 



It is not my purpose to speak here in detail concerning the many 

 interesting features observed at the boundary of the Cornell glacier. 

 This boundary was followed for many miles, and the ice-face and moraine- 



»— — Surveyed by J A Bonatee/—— 

 s SC/JLCl'-ao'. s- 



C P ttcmafntt. Dtl 



Figure i. — Marginal Lake near End of North Cornell Glacier. 

 Showing position of abandoned moraine. Ice dotted. 



foot studied. It was soon recognized that the front of this glacier was 

 even now in process of change, and realizing the importance of leaving 

 some record, by means of which at some future time the amount of 

 change might possibly be determined, I selected the places that appeared 

 to be the ones which promised to most delicately register changes of 

 position. For this purpose the northern arm of the Cornell glacier was 



