ARVICOLA AMPHIBIA. 201 
RODENTIA. 'ASTORID A. 
Fig. 76. 
Fossil. Kent’s Hole. 
ARVICOLA AMPHIBIA. Water Vole. 
Water-rat, Buck Lanp, Reliquie Diluviane, p. 18, pl. 11, 12. 
Campagnol des cavernes, Cuvier, Ossem. Fossils, tom. v. pl. 1, p. 54. 
Arvicola amphibia, Owen, Report of British Association for 1842. 
Mr. Oxes, in his interesting Paper on the Fossil Beaver 
of Cambridgeshire, contrasts the recent nature of its matrix 
with the more ancient subjacent diluvial clay, in which 
remains of the Mammoth or extinct Elephant had been 
found; and he recurs to the authority of Cuvier, who, 
among the several general laws which he has laboured to 
establish, concerning the relations of organized remains, 
and the strata which contain them, has arrived at the fol- 
lowing important conclusions: ‘‘ that the bones of species 
which are apparently the same with those that still exist 
alive, are never found except in the very latest alluvial 
deposits, or those which are either formed on the sides of 
rivers, or in the bottoms of ancient lakes or marshes now 
dried up, or in the substance of beds of peat, or in the 
fissures and caverns of certain rocks, or at small depths 
