478 



THE DEPTHS OF THE SEA. 



[chap. X. 



in thickness, were elevated above the waters and 

 became dry land ; the only essential difference would 

 be in the generic and specific characters of the im- 

 bedded animal and vegetable remains." ^ In 1858 

 Professor Huxley spoke of the Atlantic mud as 

 " modern chalk." ^ Yery early the identity of some 

 of the chalk foraminifera with species now living was 

 observed. Mr. Prestwich, in his able r&sv/m& of this 

 question, so often quoted, gives a table drawn up by 

 Professor Rupert Jones of 19 species of foraminifera 

 out of 110 from the Atlantic mud identical with 

 chalk forms, viz. : — 



1 Wonders of Geology, 6tli edition, 1848. 



2 Saturday Eeview. 



A^ol. i. p. 30,1. 



