ICE AND GLACIERS 



233 



Glacier des Bois, which rises directly from the trough of the 

 valley at Chamouni to a height of 1,700 feet, the height of 

 the Konigstuhl at Heidelberg, affords at all times a chief 



object of admiration to the Chamouni tourist. FIG. 109 

 represents a view of its fantastically rent blocks of ice. 



We have hitherto compared the glacier with a current as 

 regards its outer form and appearance. This similarity, 

 however, is not merely an external one: the ice of the 

 glacier does, indeed, move forwards like the water of a 

 stream, only more slowly. That this must be the case fol- 

 lows from the considerations by which I have endeavoured 



