Eskers. 43 1 



physical geography in these regions, so different from 

 that of to-day, and which judged by any geological stan- 

 dard is yet so recent. Besides, the events of this period 

 of plentiful snow and ice gave distinctive characters both 

 to our mountains and much of our lowlands, different, in 

 many respects, from those of mountain ranges and low- 

 lands where glaciers never were. No one with an eye 

 educated in glacier work, can fail to recognise the 

 'moulding by ice of the outlines of the Highland and 

 Cumbrian mountains. Their lines are often smooth 

 and flowing curves, and, excepting here and there, 

 cragginess is not their special characteristic. In North 

 Wales the mountains are apt to be more craggy, 

 partly because of the variable hardness of the rocks, and 

 partly because, being further south, that region was 

 not so completely smothered in ice as the more northern 

 mountains. 



