54 QUATERNARY PHENOMENA IN THE ISLE OF PORTLAND ETC. 



west disturbances might be assigned, they were evidently compara- 

 tively recent. The phenomena shown in the section described by 

 Mr. Prestwich corresponded with what might be observed in modern 

 beaches. The angular gravels might be due to glacial action. 



Mr. Gwzn Jeffreys stated that the first shell-sand sent to him by 

 Mr. Prestwich from the raised beach contained species identical with 

 those now living on that coast ; but the second collection gave spe- 

 cies not found nearer than Scarborough and Dublin. He referred to 

 the abundance of Cyamium minutum, a Greenland species which also 

 inhabits the coasts of New England, is rare in the south of England, 

 but very common in Scotland. He regarded the raised sea-beach as 

 of the same character as the existing sea-beaches in Shetland : the 

 species were essentially northern; and no Mediterranean forms were 

 met with. In the Selsea raised beach the species are southern. 



Mr. Prestwich, in reply, stated that the fissures referred to by 

 Mr. Eisher are comparatively recent, and that probably the spe- 

 cimen of Elephant referred to by Mr. Eisher had been wrongly 

 referred to that locality. In the collection from the fissures at the 

 Yerne he had seen no Elephant-remains, but only those he had 

 mentioned in the paper. 



