GLACIERS. 



1 



n<±i 



OS 



• 256 



• 25? 



• 259 



• 259 



• 260 



• 260 



• 260 



• 261 



• 264 



• 265 



266-272 



■ - 272 



NS 279 



Table-case in Recess 41. 



Arranged and described by A. C. Ramsay 



SPECIMENS ILLUSTRATIVE OF 



OMENA 



CONNECTED WITH GLACIERS AND FLOAT- 

 ING ICE. 



Specimens No. 1 to 53 were collected by M. Dolfuss- 

 Ausset. No. 1 to 39 are illustrative of existing Alpine 

 glaciers, or of their former extension. 



No. 50 to 53 are derived from the remains of the newer 

 Pliocene glaciers of the Vosges, and No. 55 to 58 are believed 

 by M. Dolfuss-Ausset to have been connected with glacial 

 action in the neighbourhood of Mulhouse, &c. &c. 



No. 60 to 92 were collected by Mr. A. C. Ramsay, with 

 the view of illustrating the newer Pliocene glaciers and 

 other points connected with glacial action in Caernarvon- 

 shire and Anglesea. No. 93, 94, and 97 were presented 

 by Mr. James Nasmyth ; No. 95 and 96 by the Rev. John 

 Gunn. 



No. 100 to 144 were collected partly by Mr. Ramsay, but 

 chiefly by Mr. Gibbs, under Mr. Ramsay's direction, to illus- 

 trate certain drift-like phenomena connected with the Per- 

 mian strata. 



TJprEK 

 Galleky. 



Table-case 

 in Recess 41 



Glaciers —In the Swiss Alps the average snow-line is 

 about 8,500 feet above the level of the sea. The glaciers 

 which descend Alpine valleys are produced by the drain- 

 age of this snow, which, in its passage downward, in conse- 



A 



