232 THE BEAUTIES OF NATURE chap. 



the most interesting those above the channel 

 of the Trient between Valorsine and the valley 

 of the Rhone. 



In Great Britain I know no better illus- 

 tration of ice action than is to be seen on the 

 road leading down from Glen Quoich to Loch 

 Hourn, one of the most striking examples of 

 desolate and savage scenery in Scotland. Its 

 name in Celtic is said to mean the Lake of 

 Hell. All along the roadside are smoothed 

 and polished hummocks of rock, most of them 

 deeply furrowed with approximately parallel 

 striae, presenting a gentle slope on the upper 

 end, and a steep side below, clearly showing 

 the direction of the great ice flow. 



Many of the upper Swiss valleys contain 

 lakes, as, for instance, that of the Upper 

 Rhone, the Lake of Geneva, of the Reuss, the 

 Lake of Lucerne, of the Rhine, that of Con- 

 stance. These lakes are generally very deep. 



The colour of the upper rivers, which are 

 white with the diluvium from the glaciers, is 

 itself evidence of the erosive powers which 

 they exercise. This finely-divided matter is, 

 however, precipitated in the lakes, which, as 



