GLACIAL RESULTS IN GREAT BRITAIN. 309 



Agassiz that Glen Roy and the adjoining 

 glens, or valleys, had been the drainage-bed 

 for the many glaciers formerly occupying the 

 western ranges of the Grampian Hills. He 

 returned from his tour satisfied that the moun- 

 tainous districts of Great Britain had all been 

 centres of glacial distribution, and that the 

 drift material and the erratic boulders, scat- 

 tered over the whole country, were due to ex- 

 actly the same causes as the like phenomena 

 in Switzerland. On the 4th of November, 

 1840, he read a paper before the Geological 

 Society of London, giving a summary of the 

 scientific results of their excursion, followed 

 by one from Dr. Buckland, who had become 

 an ardent convert to his views. Apropos of 

 this meeting, Dr. Buckland writes in advance 

 as follows : 



TAYMOUTH CASTLE, October 15, 1840. 

 . . . Lyell has adopted your theory in 

 to to ! ! ! On my showing him a beautiful 

 cluster of moraines, within two miles of his 

 father's house, he instantly accepted it, as 

 solving a host of difficulties that have all his 

 life embarrassed him. And not these only, 

 but similar moraines and detritus of moraines, 

 that cover half of the adjoining counties are 



