424 
NOTES ON THE COAST BETWEEN BRIDLINGTON AND FILEY. 
BY G. W. LAMPLUGH, F.G.S., OF H.M. GEOLOGICAL SURVEY. 
I will presume that the party on reaching Bridlington make their 
way to the North Cliff, and walk thence along the shore to the 
beginning of the Chalk-cliffs at Sewerby. They will notice that the 
sections under the town are now wholly hidden by sea-defences, the 
need for which is well brought out by the present contour of the 
coast-line, a definite projection now marking the protected portion, 
especially on the south side of the town. This projection will doubt- 
less become in time more marked, as the sea gradually develops its 
flank attack. 
The details of most of the sections now concealed have been 
recorded, with illustrations, in the past volumes of the Society, and 
may be consulted by any member requiring information regarding 
theni. (See Vol. VII. (1881;, p. 383 ; Vol. VIII. (1882), p. 27, and 
(1883), p. 240 (with map of neighbourhood) ; and Vol. XL (1889), 
p. 275). 
One of the most interesting points thus hidden is the existence 
in the lowest (Basement) Boulder Clay ot transported masses of 
shelly sand and clay, containing a rich molluscan fauna with well- 
marked Arctic characteristics. These masses constitute the deposit 
formerly known as the "Bridlington Crag." A fine collection of 
their contents has been made during favourable opportunities by 
Mr. W. B. Headley, of Bridlington Quay. A shred of similar com- 
position, containing a few shells, may be seen in the drifts above the 
chalk-cliff at Flambro' South Landing, three miles distant, in a rather 
inaccessible position. My view of these shelly patches is that they 
were torn from the sea bottom, and carried forward into their present 
position by the great ice-sheet in its advance upon our coast. 
As the members walk along the cliffs towards Sewerby they will 
notice that the sections, though much obscured by slipping, show two 
and sometimes three distinct bands of boulder clay, separated by 
irregular deposits of stratified material, and that the cliff top is held 
