ON BRITISH FOSSIL MAMMALIA. 923 
A right ramus of the lower jaw of the same species of Rhinoceros, dis- 
covered by Mr. Brown in the till at Walton in Essex, indicates, like the 
molars of the Mammoth described in the former part of this report, the ac- 
tion of enormous and peculiar forces posterior to their deposition in the 
matrix: it has been split vertically and lengthwise through the seven molar 
teeth which it contains, and in this clearly fractured state it was discovered 
when first exposed in the till; and to obviate an unnecessary length in the 
present report, I shall give the following citations of the discovery of the 
remains of Rhinoceros in British strata, in a tabular form. 
Museum. Locality. Stratum. Parts. 
Norwich. Bramerton. Fluvio-marine crag. Molar tooth. 
Miss Gurney. Mundesley. Lacustrine blueclay. Portion of lower 
jaw with three 
teeth. 
Yorkshire. Bielbecks. Lacustrine blue clay. Molar teeth*. 
Ld.Enniskillen. Maidstone. Beneath the gravel. Atlas, and other bones 
Pleistocene. and teeth. 
Mr. Flower. __Iiford. Pleistocene. Upper molar. 
Do. Grays. Do. Lower molar. 
Do. Ilford. Do. Femur. 
Mr. Bossey. Wickham, Pleistocene. Upper jaw, and bones. 
near Woolwich. 
Brit. Mus. Drift near —_—_- Molar tooth, described 
Canterbury by Grew, Rarities of 
Gresham College, 
pl. xix. fig.3. 
Parkinson. Fox Hill, Drift. Molar teeth. 
Gloucestersh. 
Do. Chatham. Drift. Molar teeth. 
Mr. Morris. Tiford. Pleistocene. Teeth. 
Do. Erith. Do. Teeth and phalanges. 
Do. Grays. Do. Teeth and bones. 
Do. Harwich. Do. Bones. 
Do. Kingsland. Do. Teeth. 
Genus Hippopotamus. 
Remains of this remarkable genus appear to have been first unequivocally 
determined by Mr. Trimmer in a pleistocene formation at Brentford, over- 
lying the London clay; they include several tusks, two lower incisors, an 
entire molar and the fragment of a second, and were discovered after pene- 
trating through nine feet of brick-earth and seven feet of sandy gravel, in a 
stratum from one foot to nine feet deep of calcareous earth with freshwater 
shells: here the remains of the Hippopotami were associated with those of the 
Mammoth and of species of Deer. The locality is forty feet above the pre- 
sent level of the Thames. Six of the Hippopotamuses’ tusks lay within an 
area of 120 yards. These fossils are referred by Cuvier to the extinct species 
which he has named Hippopotamus major. 
Mr. Parkinson obtained from the till at Walton, in Essex, the following re- 
mains of the Hippopotamus :—a right lower incisor, the upper extremity of 
a lower canine, an anterior upper molar, and an ultimate lower molar tooth. 
Dr. Buckland discovered molar teeth of the Hippopotamus in the Hyzena- 
eave at Kirkland, whence he infers that this pachyderm, like the Rhinoceros 
* The Bielbecks fossils, Elephant, Rhinoceros, Felis, Urus, &c, &c., are all mentioned in 
Phillips’s Geol. of Yorkshire, vol. i. (2nd edition), 
+ Philosophical Transactions, 1813. 
