176 ELEPHANT AND HIPPOPOTAMUS AT BRENTFORD. 
a large molar tooth of an elephant was dug up in a gravel-pit in one 
of the streets of Oxford, in front of St. John’s College. 
In the Philosophical Transactions for 1813, is a report of the tusk 
of an elephant, nine feet long, and of other remains of the same 
animal, with those of hippopotamus, ox, and several species of deer, 
and the horn of an ox, four feet and half in length, all of which were 
found by Mr. Trimmer in the gravel of the valley of the Thames, 
near Brentford. Six tusks of the hippopotamus lay in an area of 120 
yards. At Plate XXII. fig. 5, I have copied from Lee’s Natural 
History of Lancashire the entire head of an hippopotamus, found in 
that county under a peat bog. In all these gravel beds it rarely 
happens that two bones lie in immediate contact with each other, and 
in very few cases are they rounded by attrition. 
At Newnham, in Warwickshire, near Church Lawford, about two 
miles west of Eugby, two magnificent heads and numerous bones and 
teeth of several individuals of the Siberian rhinoceros, with many large 
tusks and teeth of elephants, and some stag’s horns, and bones of the ox 
and horse, were found, in the year 1815, in a bed of diluvium, which is im¬ 
mediately incumbent on stratified beds of lias; and is composed of a mix¬ 
ture of various pebbles, sand, and clay : in the lower regions of which, 
(where the clay predominates), the bones are found at the depth of 15 
feet from the surface ; they are not in the smallest degree mineralised, 
and have lost almost nothing of their weight or animal matter. One 
of these heads, measuring in length two feet six inches, together 
with a small tusk, and molar tooth of an elephant, have, by the 
kindness of Henry Hakewill, Esq. (of architectural celebrity) been 
