134 MR. E. HULL ON THE VESTIGES OF EXTINCT 



wegian Peuinsula, but more especially devoted to the 

 southern part of Norway, the directions of the glacial 

 striations are indicated on beautifully executed maps, with 

 great fidelity, and exhibit in the clearest manner the course 

 of the ice, either as glaciers or bergs, at the period when 

 almost the whole unsubmerged region was overspread by 

 one broad winding sheet of snow and ice. From an inspec- 

 tion of these maps, it is evident that there was a general 

 motion of the ice from the central axis of the chain at every 

 point. Thus at the extreme north, the strise point north ; 

 along the western coast, they point west ; at the southern 

 extremity, and on both sides of the Baltic, the normal 

 direction is S.S.E. To this south-easterly drift of the ice 

 it is owing that the plains of Germany, Poland and Russia, 

 as far south as lat. 50°, are strewn with blocks of Scandi- 

 navian granite. 



Reverting to the British Islands, I shall endeavour to 

 present a short sketch of the glacial vestiges which are to 

 be found amongst the mountains of Killarney in Ireland, 

 of Caernarvon in North Wales, of the Lake district in Eng- 

 land, and the Scottish Highlands. If the account of some 

 of these districts is very meagre, it is because there are but 

 few detailed observations for our guidance. 



Mountains op Kerry. — Professor Agassiz, in giving 

 a general sketch of the ancient glacial centres of the 

 British Islands, includes amongst them the mountainous 

 district at the southern extremity of Ireland, at the en- 

 trance to which are situated the far-famed Lakes of Kil- 

 larney.* 



On approaching this region from the east, it is im- 

 possible not to be struck with the vast accumulation of 

 detritus, with large boulders derived from the rocks of 

 which the mountains are composed. This deposit of the 

 age of the northern drift is spread over the low-lying 



* Proceedings of the Geological Society, toI. iii. 



