306 LOUIS AGASSIZ. 



ing year what had been the rate of movement 

 of the glacier. The summer's work closed 

 with the ascent of the Siedelhorn. In all 

 these ascents, the utmost pains was taken to 

 ascertain how far the action of the ice might 

 be traced upon these mountain peaks and the 

 limits determined at which the polished sur- 

 faces ceased, giving place to the rough, an- 

 gular rock which had never been modeled by 

 the ice. 



Agassiz had hardly returned from the Alps 

 when he started for England. He had long 

 believed that the Highlands of Scotland, the 

 hilly Lake Country of England, and the moun- 

 tains of Wales and Ireland, would present the 

 same phenomena as the valleys of the Alps. 

 Dr. Buckland had offered to be his guide in 

 this search after glacier tracks, as he had for- 

 merly been in the hunt after fossil fishes in 

 Great Britain. When, therefore, the meeting 

 of the British Association at Glasgow, at 

 which they were both present, was over, they 

 started together for the Highlands. In a lec- 

 ture delivered by Agassiz, at his summer 

 school at Penikese, a few months before his 

 death, he recurred to this journey with the 

 enthusiasm of a young man. Recalling the 

 scientific isolation in which he then stood, op- 



