Vol. IX.] 
[Part III. 
PROCEEDINGS 
OP THE 
YORKSHIRE 
GEOLOGICAL AND POLYTECHNIC SOCIETY. 
Editkd by JAME3 W. DAVIS, F.S.A., F.G.S., &c. 
1887. 
ON THE LARGER BOULDERS OF FLAMBRO' HEAD. Part I, 
BY G. W. LAMPLUGH. 
The boulder-clays and glacial gravels which are everywhere so 
strongly developed in the coast-sections of Yorkshire, are steadily 
yielding erratic blocks as the sea cuts back into the cliffs, and these 
blocks accumulate on the shore in large numbers, although they are 
constantly being diminished by human agency and by the action of 
the waves and the weather. They are conveniently placed for study, 
and I have long thought that it would be worth while to make a 
careful enumeration of those lying within a given area ; and this 
report is a beginning in that direction. For my purpose 1 have 
selected the coast line of Flambro' Head, because of its convenient 
proximity, and because its cliffs contain many deep and highly 
interesting drift sections and its shores have less sand and shingle 
to hide the blocks than most parts of the coast. The present report 
is a first instalment, dealing only with that part of the cliff and 
beach which lies between the town of Bridlington Quay and the 
Danes Dyke Valley, a distance of about three miles ; while the total 
length of the cliff line which I propose to examine exceeds twelve 
miles, and will take some time to complete. 
Within the area dealt with in this paper I examined all the 
larger boulders which were visible on the beach or in the cliff during 
