DRIFTS AND PRE-GLACIAL ANIMALS. 
293 
About this time the attention of Mr. Denny was called to the 
occurrence of some very large bones in a brickfield at Wortley, near 
Leeds. These occur in the second series of drifts mentioned by Mr. 
Thorp. The discovery forms the subject of a paper read a year after- 
wards, in 1853, at a meeting of the Society at Doncaster. The bones 
were those of hippopotamus, and on careful examination of the clays 
from which they Avere obtained it was found that several other bones 
of the same animal still remained inserted. Evidently the animal 
had remained where it had died, and the whole of the skeleton was 
preserved. Ultimately, the remains of two other animals were found, 
as well as some bones of a fossil elephant (Elephas primigenius), and 
a jaw with molar teeth of Bos primigenius. These animals were con- 
sidered by Mr. Denny to represent pre-glacial types, but appear to 
indicate that they existed after the close of the glacial period ; 
because, agreeing with Mr. Thorp and others that the deposits near 
Leeds were accumulated at or immediately after the close of the 
intensely cold period during which the boulder clays were accumu- 
lated, it follows that the remains embedded in them must also have 
existed after the close of the glacial period. This was the third 
occurrence of hippopotamus in Yorkshire : — first, in the cave at 
Kirkdale ; second, at Overton, near York, where a single molar tooth 
was found ; and the present instance. The remains of the hippopo- 
tamus and other animals were deposited in the Society's Museum, 
located in rooms rented from the Philosophical Society of Leeds, and 
formed, perhaps, at that time the most important collection of bones 
of this animal in the kingdom. 
Mr. Denny further contributed a paper in 1855 on the claims of 
the Gigantic L'ish Deer, to be considered as contemporary with man. 
He describes a large number of instances in which remains of Mega- 
ceros Hihernicus, or the Irish Elk, have been discovered. The first one 
of which any record has been kept was at Cowthorpe, near Wetlierby, 
in 1744, when a fine head and horns, weighing 68lbs., were 
found at a depth of six feet in a peat moss. These horns were 
supposed not to have arrived at their full growth, from the circum- 
stances of their being still covered with a velvet coating. The fossil 
bones of this animal were considered to be of comparatively modern 
