250 
DAKYXS : GLACIAL DEPOSITS. 
laid by sand and laminated sandy clay, and these by brown boulder 
clay light coloured, and this by dark brown boulder clay reddish 
at top, there being in places a thin parting of sand or gravel 
between the two boulder clays. 
Some way north of South Landing we have 
Reddish Boulder Clay- 
on Chalky Gravel, 
on Mixed Gravel, 
on Purple Boulder Clay. 
The various divisions cannot be traced continuously. 
At High Stacks, as shewn in my paper read at Driffield, we 
have 
Red Boulder Clay, 
on eroded surface of Chalky Gravel, 
on eroded surface of Boulder Clay, unconformable, 
on Chalky Gravel, 
on Boulder Clay, 
on denuded edges of Gravel, 
on eroded surface of Purple Boulder Clay. 
Again, south of Thornwick we have 
Boulder Clay, weathering red, 
on Gravel, unstratified, 
on Purple Boulder Clay, 
on Chalk rubble, thick, 
on Chalk. 
And north of Thornwick we have 
Purple Boulder Clay, 
on Boulder Gravel, passing into stratified gravel 9 feet, passing 
into Boulder Clay, 
on Purple Boulder Clay, 25 feet, 
on Gravel and Sand,") 
on Conglomerate, ) ' 
on Chalk. 
And* at Thornwick Cottage there is red boulder clay on gravel 
with shell fragments, both of which are probably above the beds 
seen in the cliff. 
Boulder clay stretches continuously over the sea-w r ard end of 
* The beds at Thornwick Cottage are certainly above those seen in the cliff 
below ; and are no doubt the same as the similar beds at Beacon Hill. The 
boulder clay is probably the same as that which covers the lower slopes of the 
Wold continuously from Hessle to Bridlington. The sand and gravel may be the 
same as the shell bearing sands of Kelk and Brand esburton. 
