254 K. Chambers, Esq.. on Glacial Phenomena 



were discovered, and can testify to their genuineness. I 

 also find, among my own memoranda, a note and sketch of 

 another, which we had discovered at the head of Glen Glas- 

 ter, with the smoothed side to the north-westward. Thus, 

 in the very district containing the markings which Mr Mac- 

 laren, M. Martins, and Sir Roderick Murchison, have de- 

 pended on as completing their proofs of a radiating arrange- 

 ment, we see that there is a more widely-spread set of mark- 

 ings, more elevated in situation, and in conformity with the 

 normal direction. MrMaclaren also mentions smoothed rocks 

 on Loch Etive, with striation, to his surprise, not conformable 

 to the shore, and coming, as he thought, from ESE., or from 

 Loch Awe, though hills of from 300 to 500 feet intervene. 

 I have no doubt that if Mr Maclaren had seen the examples 

 which exist in the far north, he would have regarded this as 

 an example of that early general glaciation proceeding from 

 the north-west, which we have shewn to be independent of 

 even more considerable inequalities of ground than the hills 

 of Loch Etive. 



It happens that, at a place not many miles from Loch Etive, 

 namely the Isle of Kerrera, opposite Oban, there are numer- 

 ous smoothed surfaces dipping into the sea, with striation 

 from N. 60° W., being nearly the same direction as Mr Mac- 

 laren' s, WNW. If the agent moved on to S. 60° E., it would 

 strike the shore at Oban ; and if it went straight on, it must 

 have passed over the high grounds which lie between that 

 shore and Loch Awe. The question may arise, Did it not 

 pass in the opposite direction ? One circumstance, not easily 

 reconcileable with that idea, and otherwise highly curious, is, 

 that on the high grounds above Tobermory, in Mull, twenty- 

 five miles from Oban, there are striae pointing from N. 60° W. 

 No glacier proceeding from the hills above Oban could go 

 straight on to this point, and leave marks on a hill two hun- 

 dred feet high. But, when we see marks in the far north, as 

 independent of unequal ground, and equally irrelative to the 

 kind of grounds which feed glaciers, we have no room to doubt 

 that these Mull and Oban markings belong to the same class. 



The examples in the valleys of Loch Fine, Loch Eck, Loch 

 and Gteirloeh, which Mr Maclaren has cited, all with 



