COLUMBIA GLACIER 



77 



ice front (fig. 39). A second push-moraine, less massive 

 than the first, lay within it, being 160 feet from it at the 

 water margin 

 and elsewhere 

 nearer to it 

 than to the ice. 

 On the island 

 between the 

 two ice cliffs 

 there were 

 also two push- 

 moraines of 

 recent date, 



the nearer being about 100 feet from the ice front, the 

 farther from 300 to 500 feet. The latter was associated 

 with overthrown forest trees, and included with its rocky 



FIG. 39. PUSH-MORAINE, WEST SHORE OF COLUMBIA BAY. 



FIG. 40. FLUTED MORAINE AT EDGE OF COLUMBIA GLACIER. 

 Photographed in June, 1899. 



debris not only tree trunks and branches but folds of 

 peaty soil. The tract between the nearer push-mo- 

 raine and the ice was in places occupied by an old mo- 



