CASTOR EUROPJEUS. 191 



the Castor Europaus of the present clay, co-existed with 

 the Trogontherium. Remains of the Beaver have been thus 

 discovered by Mr. Green in the same fossilized condition, 

 and under circumstances indicative of equal antiquity with 

 the extinct Mammoth, in the lacustrine formations at Bacton. 

 And M. Fischer, on his part, having received remains of a 

 Beaver from near the Lake of Rostoff, in the department 

 of Jarosslow, designated the species from the resemblance 

 of the skull to that of the larger, and previously discovered 

 Rodent, Trogontherium Werneri. Cuvier, however, to 

 whom a drawing of the cranium had been transmitted, 

 pronounced it to belong incontestably to the Beaver ; it 

 had the same dimensions, the same crests, and the same 

 depressions as the skull of the Castor Europaus, with 

 which it accorded in the smallest particulars. The con- 

 temporaneity of the beds in which this Beaver's skull and 

 that of the Trogontherium were found in Russia, is not, 

 however, so well ascertained as in the case of the Norfolk 

 fossils referable to the Castorida. Remains of the Beaver 

 {Castor Europaus), from the beach at Mundesley on the 

 Norwich coast, are preserved in the collection of Miss H. 

 Gurney, of North Repps Cottage, near Cromer ; they are 

 most probably from the fresh-water formation, and the 

 Beaver may have been the inhabitant of that small river, 

 which, Mr. Lyell imagines, "may have entered here, bring- 

 ing down drift-wood, fresh-water shells, mud, and sand."* 

 Mr. Woodward notices the occurrence of fossil remains of 

 the Beaver in the cliffs at Mundesley, and in the oyster-bed 

 at Happisburg, Norfolk, in his Geology of that county. 

 Mr. Lyell submitted to my inspection some years ago a 

 portion of the characteristic femur of the Beaver, from the 

 fluvio-marine crag at Thorpe, in Suffolk. 



* Philosophical Magazine, May, 1840, p. 253. 



