174 G. W. Lamplugh — The Shell-bed at Speeton. 



ill the greensand. The pebbles are mostly flint, but I have found 

 a quartz pebble. The fossils, it should be noted, are alwaj's in the 

 greensand ; fossil localities are, the railway cutting described above, 

 the road cutting near Long Cross, a ditch cutting in the road near 

 Fellow End, cuttings S. and W. of Chobham Place, and at Knowle 

 Hill ; all these places lying north of the Upper Bagshot ridge. 

 Prof. Prestwicli mentions besides Goldsworthy Hill near Woking, 

 and the cutting at Shapely Heath near Winchfield, but at neither of 

 these places have I been successful in finding fossils. 



Loiver Bagshot. — One of the best exposures of these beds in this 

 district is at St. Anne's Hill near Chertsey. The upper part of this 

 hill is one large pebble-bed, the lower consists of light-coloured 

 sands with thinner pebble-beds. A large sand pit has been opened 

 on the north side. In the refuse heaps of this pit I noticed some 

 large blocks of white sandstone exactly like the Sarsen stones found 

 in the drift gravel. I did not see any in situ in the pit, but the 

 workmen told me that they occurred irregularly in the sand, and 

 they seemed to be merely consolidated portions of the sand itself. 

 Some of the pebble-beds are likewise solidified and form hard 

 conglomerates. This is the only instance of stone resembling Sarsen 

 stone that I have seen in the Bagshot beds. Professor Prestwich 

 states that Sarsen stones occur in the Upper Bagshot just below the 

 drift gravel : with this however I cannot altogether agree ; for though 

 I have examined many Upper Bagshot pits, I have never seen a 

 Sarsen stone in the Upper Bagshot beds themselves ; it is true I 

 have seen hundreds in the overlying drift gravel. 



The pebble-beds of the Lower Bagshot are chiefly flint, though 

 sometimes pieces of ironstone are found, probably from the Lower 

 Greensand. 



I have found no fossils in the Lower Bagshot except vegetable 

 remains, which are generally obscure. A bed in a pit near Golds- 

 worthy Hill, consisting of light-coloured sandy foliated clays, lying 

 just above the Lower Bagshot Sands, is full of stalk-like impressions. 

 In the Sarsen stones carbonaceous pipes are often common. 



V. — On a Shell-bed at the Base of the Drift at Speeton 



NEAR Filey, on the Yorkshire Coast. 



By G. "W. Lamplugh. 



Introduction. — A few miles north-west of Flambro Head the 

 Chalk, after grandly edging the sea with sheer cliffs of over 400 

 feet, recedes inland ; its steep high scarp making at first an angle of 

 about 20° with the coast. 



Between these Chalk Wolds and the Oolitic range opposite is the 

 broad flat Vale of Pickering, which is based on soft clays and 

 shales belonging to the Neocomian and Kimmeridge series, deeply 

 covered with glacial and modern alluvial deposits. Where inter- 

 sected by the sea, the Vale has a width of about four miles, 

 but expands inland into a broad plain ; to contract again beyond 

 Malton into a mere cutting, by which the Derwent has forced its 

 way through the Oolitic hills into the plain of York. At its eastern 



