^>90 lamplugh: buried cliff at sewerby. 
but we find instead that stones of any kind except of clialk, are so 
few and far between that it requiretl a thorougli and systematic 
process of excavation to find them.-'' A single stranded mass of 
ice might yield far-travelled pebbles enough for miles of such a 
beach. 
Both tlie sea-beach and the blown -sand seem to indicate 
that the prevalent wind of the period came from somewhere between 
south-east and south-west ; and that a mild climate resulted is 
shown not only by the presence of oysters among the shingle, but 
also by the state of the old cliff-face, to which attention has already 
been called. Its sand-worn surface is so unbroken that anyone who 
has studied the rugged broken features of the present cliff, or has 
watched for himself the effect of even a slight frost on a chalk 
escarpment, will at once be convinced that there can have been very 
little frost when this cliff was carved out. 
The fauna itself, as at present known, does not aid us much in 
determining the exact age of the deposits. There seems to be nothing 
in it to prove wdiether the beds are pre-glacial, glacial, or post-glacial, 
though it shows that they cannot belong to the older Tertiaries. 
The shell-bed at Speeton,^: though at a much higher level above 
the sea, is probably of approximately the same age as these deposits, 
and there are also certain valley-beds at Danes Dyke, and at two or 
three other places on Flambro' Head that hold similar positions 
between the glacial beds and the chalk, but no animal remains have 
yet been obtained from them.§ 
The preservation of this little triangular patch of incoherent 
beds beneath the boulder-clay is one more proof, if that were needed, 
of the southerly flow of the ice over the headland during glacial 
* Not reckoning the fragments of carbonaceous shale, we never came 
across ncore than three or four foreign pebbles in a day, and I think I could 
have carried away all we found in ray pocket. 
Since this was written the winter frosts have come, and the exposed 
portion of the old cliff has completely lost its smooth outline, 
JSupra cit. Geol. Mag., sec. ii., vol. viii., p. 174. 
§ A steep cliff of chalk with angular gravel banked against it, has also 
recently been exposed in the deep railway cutting north of Flambro' Station, 
but this seems to be a valley wall of late glacial or post-glacial times, the 
gravel containing many drift pebbles, and probably forming a continuation of 
the " Sewerby gravels." 
