WALTON : SOME NEW SECTIONS IN THE HESSLE GRAVELS. 397 
boulder clay lying upon six inches of bedded .sand ; below the sand 
is four feet of chalk rubble, then chalk. It is to be noted that the 
thickness of the gravel and sand on this south slope of the Chalk is 
only a few inches, perhaps a little more in places. The bones 
mentioned by the Geological Survey belong to Elephas primigenius, 
Rhinoceros, Cervus, Bos, and Equus caballus. The Memoir mentions 
that " there is not only a north and south slope of the Chalk but also 
an east aud west irregularity, probably an old channel connected 
with the Humber." 
The Old Chalk Cliff. 
It is with the deposits banked against this east and west slope 
of the Chalk, together with the slope itself, that we are concerned at 
present, and I hope to show that they are of very great importance 
in arriving at a correct knowledge of the Hessle gravels ; in fact I 
think they go a long way to prove that the Hessle gravels are the 
deposits that were banked up against th?, Humber end of the old 
cliff which formed the boundary of the Bay of Holderness in pre- 
glacial times ; and that the east and west irregularity of the Chalk 
mentioned by the Geological Survey was in reality the old buried 
cliff. The accompanying map shows that portion of Hessle lying a 
little to the west of the village, and with the Humber on the south. 
The surface rises from the water towards the north to a little over 
one hundred feet. The south edge of the gravel is about twenty- 
five feet above high-water mark. The bridge crossing the railway 
in Wold Field Lane is fifty feet. 
The point marked A is about ninety feet. The one hundred 
feet contour passes from the N.W. corner of the field in which A is 
marked through the N.W. corner of the Town's Pit. From this con- 
tour line the land falls towards the E.S.E.. so that the twenty-five 
feet contour lies just to the east of the road leading from the Station 
to the Village. For some miles further to the east the land is a low 
level, being only a few feet above the water line. The position of 
the Chalk is shown on the map, the actual exposures being also 
marked. There is an old pit just south of the railway showing 
about thirty to thirty-five feet of Chalk ; it can also be seen in the 
railway adjoining. This section is on the south slope of the hill. 
