GLACIERS 211 
Besides these unstratified deposits, the water which 
flows from the margin of the ice, frequently carries 
more sediment than it can move down the valley; and 
some of this is then built up in the stream valley, as 
assorted or stratified river deposits of sand, gravel, 
or clay (Fig. 115). Along the margin of any glacier, 
Fie. 115. 
A stream from the end of the Malaspina glacier, Alaska, depositing 
gravel in its bed. 
such accumulations are made; and they, like the beds 
directly deposited from the glacier, may be seen in 
places once occupied by ice. 
Former Extent of Valley Glaciers. Below the ends 
of all valley glaciers, and in many mountain valleys 
now free from them, there is abundant evidence that 
in recent times these ice sheets were more numerous 
