108 



ICE AND GLACIERS. 



end of the Mer de Glace. The latter, already mentioned as the 

 Olacier 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 



FIG. 17. 



admiration to the Chamouni toui'ist. Fig. 18 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, how- 

 ever, is not merely an external one : the ice of the glacier does, 

 indeed, move forwards like the water of a stream, only more 



