10 SHEPPARD : INTER-GLACIAL GRAVELS OF HOLDERNESS. 
was a small quantity of light-coloured, plastic cla}^ totally different 
from the neighbouring boulder clay. There is also a peculiar mark 
in the centre which appears to have been made by the tooth of some 
carnivore. It is also fractured inside as though partially bitten 
through. There are, too, several small marks on the face of the bone 
which give it the appearance of having been gnawed. The conditions 
under which the specimen was found render it impossible for it to 
have been struck by the workmen. The dendritic markings of 
manganese covering the impression also seem to indicate that the 
indentation in the bone was made prior to its deposition in the 
gravel. The upper part of the ulna is broken away just opposite 
the mark, and appears to have been torn off by the same bite as 
made the indentation. 
It would seem probable, therefore, that this bone, after having 
oeen gnawed, had been left in the bed of a stream or on the beach 
(in a similar manner to those described by Mr. Lamplugh when the 
Sewerby Cliff" Gravels were opened)'" to be finally lifted up by the ice, 
along with the other material from the beach, and deposited at 
Burstwick.f It will be noticed that the mammalian remains are only 
found in those hills south of Bridlington. 
The following is a list of the animals whose remains have been 
found in the Burstwick Pit : — 
Cervus megaceros. Bos primigenius. 
„ elephus. taurus. 
Hysena (?). (Indicated by gnawings.) 
These have been identified by Mr. H. M. Platnauer,B.Sc., A.R.S.M., 
who states that there are also remains of at least three other species 
of animals not yet identified. 
The workmen tell me that bones are generally found when they 
dig deep down into the gravel. 
T/ie BoidcUr Clay. — On the western side{ of this pit there is a 
bed of reddish boulder clay (A), containing very few pebbles. It is 
*Proc. Yorksh. Geol. and Polyt. Soc, 1887, Buried Cliff at Sewerby, p. 381. 
t These bones may have been left by the animals inhabiting this region during 
the oscillation of the ice-front. 
X Since the paper was read the boulder clay has been exposed on the eastern 
side of the pit, capping the gravel. 
