NOTES ON EAST YORKSHIUE BOULDERS. 
BY JOHN W. STATU EK, F.(;.S. 
[Read July \Uh, 1900.) 
Our knowledge of the distribution and source of tlie boulders 
of East Yorkshire has perceptibly increased during the last few 
years, and an attempt is made in the following notes to point out 
and group the more interesting of the facts, both old and new. 
BOULDERS TWELVE INCHES AND UPWARDS IN DIAMETER. 
Some ten years ago Mr. G. W. Lamplugh counted and roughly 
classified the larger boulders of Flamborough Head and other 
selected localities on the Yorkshire coast, and published his results 
in the Proceedings of this Society. This work has been continued 
by members of the Hull Geological Society, who have, up to the 
present time, recorded nearly 4,000 boulders of twelve inches and 
upwards in diameter. To avoid possible error arising from the 
moving beach and other causes, only the boulders actually in place 
in the clays were noted, or such as had I'ecently and obviously 
fallen from the clilfs. The whole of the coast-line from Spurn 
to Flamborough has been surveyed in this way, and also 
portions of the coast north of Flamborough as far as Saltburn. 
The lists thus compiled have been published from time to time 
by the Hull Geological Society and by the Erratic Blocks' 
Committee of the British Association, 
The cliffs of Holderness, with the exception of certain post- 
glacial deposits, consist entirely of glacial accumulations, and 
therefore afford exceptional opportunities for the study of East 
Yorkshire boulders ; and the following table gives the particulars 
obtained at four localities where the cliff sections were clear 
and boulders plentiful : — 
