210 Dr. W. B. Clarke on the Crag of Suffolk. 



injured in the act of removing it from the deposit in which it 

 was found. 



C. 



Caudal vertebra of a Cetacean from the Coralline Crag of Suffolk. 



C represents the body and transverse processes of a caudal 

 vertebra of a Cetacean, also found in the Coralline Crag of 

 Suffolk. 



In addition to the above-mentioned organic remains are the 

 numerous interesting and beautiful species of Testacea which 

 abound in the several divisions of the Crag deposit, and which are 

 now so much sought after as objects of great interest to geologists 

 and the " general collectors " of the neighbourhood, and which 

 are so ably described and figured by Messrs. S. V. Wood and 

 Sowerby in the works recently published by the Palaeontogra- 

 phical Society. 



In reference to the various fossils discovered in the Crag, and 

 which are derived from other formations, it will be remembered 

 that by the action of the sea and other causes, deposits pre- 

 viously formed are broken up and large quantities of such 

 material are transported, in some instances to very great di- 

 stances, examples of which are observed everywhere around us in 

 the ' gravel • or f till ' : and there are accumulations forming in 

 the German Ocean at the present time, from the ' debris ' of va- 

 rious parts of the shores of England, Scotland and the continent, 

 which are being driven together by the continuous agency of 

 currents, and thus, for instance, are carried into the same de- 

 posit, the chalk of Kent ; the London clay, crag and upper 

 tertiary of Essex ; clay, crag and chalk of the Suffolk and Nor- 

 folk coasts ; chalk, oolite and lias of Yorkshire ; magnesian 

 limestone of Durham ; sandstone and coal of Northumberland ; 

 together with the trap and plutonic rocks of Scotland ; all of 

 which are associated with the tertiary and other deposits from 



