252 
LAMPLUGH: GLACIAL SECTIONS. 
I am by no means certain that the ice which formed the top red 
clay of Flambro' Head had entirely disappeared at this time. Indeed, 
I am inclined to think that its presence as a glacier overlapping the 
headland and stretching into Bridlington Bay may have aided in the 
deflection of the valley-floods, and have also helped to swell them, 
not only by waters poured down the Bempton Valley, but also by 
streams issuing directly from the ice and coursing south-west. In 
support of this I would cite the chalkless gravel which is seen to 
pass under the Sewerby Gravel in the cliff section opposite Sewerby 
Park, and the similar gravels seen in many places on The Head, 
which are evidently the result of the washing of Boulder Clay 
material. I am inclined to think the gravel, 2& of Part II., is of 
the same age as these chalkless gravels and has had a similar origin. 
I think the term " Bridlington Series^' might fitly be applied to 
cover the Bridlington and Sewerby G-ravels and the Hilderthorpe 
Sands, to include also the low level gravels marked 2a in these 
sections, whose formation is so analogous to that of the older beds, 
of which the}^ probably formed a direct continuation in time, that it 
is not necessary to separate them. 
I would also suggest the term Gypsey Gravel for the more 
recent gravels. No. 2 of these sections, as their history is, beyond 
all doubt, closely connected with that of the stream which bears the 
name. 
In conclusion, the picture presented to my imagination of the 
condition of things in the neighbourhood during depositions of the 
Bridlington Series, is of bleak frozen chalk wolds, silent and deserted, 
and deeply covered by snow in winter, and in summer streaked and 
drenched with melting snow and muddy chalk detritus, and of dales, 
sometimes ice-bound, sometimes held by rills and streams and floods 
of icy water sweeping out into the low ground with swift floe-laden 
currents, submerging much of the wide uneven plain which then 
stretched far out into the present bed of the North Sea, and reduc- 
ing it to a state resembling the descriptions we have of the Siberian 
tundras in flood time. 
Later, with less copious streams, I picture Holderness as a 
mershe countree ;" — a place of lakes, and bogs, and ponds innumer- 
