410 HIPPOPOTAMUS. 



a water-worn tusk of this kind from the beach at Cromer, 

 the bases of certain of these cones at intervals of about 

 an inch form slightly projecting ridges, encircling the tusk 

 rather obliquely, and causing an undulation of the surface. 



The canines are wanting in the lower jaw from Cromer ; 

 but a portion of an inferior canine of a larger specimen of 

 the Hippopotamus major, in the Museum of Miss Gurney, 

 measures three inches and a half in diameter across the 

 flattened side : fig. 161 gives a reduced view of the 

 inner side of the extremity of a lower tusk from the fresh- 

 water deposits at Walton, of nearly equal dimensions. 

 Mr. Brown of Stanway possesses a portion of a smaller 

 tusk of the fossil Hippopotamus, from the same formation 

 and locality. 



In the Norwich Museum there is a tusk of the Hippopo- 

 tamus major, which was dredged up from the oyster-bank 

 at Happisburgh ; it is black and heavy, being penetrated 

 by iron. In the Museum of the Yorkshire Philosophical 

 Society there is a molar tooth of the Hippopotamus ma- 

 jor, from Overton, near York. In the collection of Mr. 

 Saull, F.G.S., are preserved some fine portions of the under 

 jaw, and several detached teeth of the Hippopotamus ma- 

 jor from the post-pliocene fresh-water beds at Alconbury, 

 near Huntingdon. 



Remains of the extinct Hippopotamus have been found 

 in other limestone caves in England than that at Kirk- 

 dale ; as, for example, at Rentes Hole, Torquay. Se- 

 veral teeth of the Hippopotamus were found, associated 

 with Mammoth, Rhinoceros, Aurochs, Ox, Hysena, and 

 Bear, in the cavern at Durdham Down, recently described 

 by Mr. Stutchbury. 



With respect to the bones of the extremities of the 

 Hippopotamus, the femur, which equals in size that of the 



