388 



EARTH FEATURES A^D THEIR MEANING 



may develop where basins of one sort or another have been 

 inherited from the preceding period. In such cases inherited de- 

 pressions may become more important than the auto-sculpture of 



Milea 



FIG. 415. Outline map of the Illecillewaet glacier, an inherited-basin glacier in 



the Selkirks. 



the glacier. Glaciers which develop under such conditions may 

 be described as inherited-basin glaciers. 



A partly closed basin between ridges may supply a collecting 

 ground for snows carried from neighboring slopes by the wind, 



