228 SHEPPARD : NOTES ON ELEPIIAS ANTIQUES AND OTHER REMAINS. 
Coal-Measure sandstone, Millstone Grit, etc., and compact ferruginous 
sand, is older, probably much older, than tlie gravel forming the 
upper part of the section, which consists of material principally- 
derived from the neighbouring Chalk, and contains no mammalian 
remains. 
The gravel on the low ground, however, (Prescott's), is of a 
looser character than the upper gravel at Mill Hill, and is composed 
principally, not of Chalk, but of Millepore Oolite, outcrops of this 
rock occurring close by. Like the Mill Hill gravel, it contains a few 
fossils derived from the Lias, and also from the Chalk. The gannister. 
Millstone Grit, etc., which are found in the lower part of the Mill 
Hill section, are entirely absent here, though there is a huge boulder 
of fairly pure quartzite lying in the field which was once the quarry 
floor, and no doubt this boulder came from the gravel. 
At present there seems nothing to indicate the relative ages of 
the gi'avels on the low ground and those on Mill Hill. Certainly the 
Lower Mill Hill gravel is the oldest, and I seem to be under the 
impression that the upper gravel at that place is of the same age, 
and consequently formed about the same time as that in Prescott's 
pit. Mr. Kendall, however, who has been over the ground since the 
paper was read,'" thinks that the latter was formed subsequently to 
both the gravels on Mill Hill, and is, therefore, of a later date. 
Further evidence must be forthcoming, however, in order to settle 
this point. 
There is (or was) a deposit at Bielbecks, which in many ways 
bears close resemblance to the Mill Hill series, not only in the com- 
position and relative positions of the beds, but also in their respective 
contents. 
Bielbecksf is the name of a farm situated between Market 
Weighton and North Cliff, and is about eight miles north-west of 
EUoughton. It lies between the 25 and 50 feet contour lines. 
The beds were first exposed by the tenant of the farm, who dug 
out large quantities of material with w^hich to marl his sandy soil. 
Mr. W. H. Dykes, of Hull, called the attention of Professor Phillips 
* I have to thank Mr. Kendall for kindly permitting me to peruse the 
notes he made on this occasion, which contain a deal of information. 
f Sometimes spelt Bealbecks, Bealsbeck, or Beele Beck. 
