THE ARAPAHOE GLACIER 



84 I 



the small glaciers into which the larger ice mass became divided 

 in its dying stages. Other crescentic moraines are now just 

 becoming exposed at the present border of the ice, the horns of 

 the crescents being in the positions of medial moraines which 

 were formed on the valley bottom between tributary glaciers, 

 and are now for the first time being exposed by the wasting of 



Fig. 2. 



the ice. Several of these medial lines are distinctly terminal in 

 their relations to the ice on either side, as shown by the fact 

 that the movements of the ice are not in the direction of such 

 lines, but normal to their trend from both sides. (One such is 

 well shown on the map, Fig. 2.) 



The moraines whose positions indicate that they have been 

 for a long time exposed are composed, not of rounded bowlders, 

 but of large fragments from among which all smaller stones 

 have been removed. This statement is made of those near 

 the present limit of the ice, and therefore formed since the 



