518 
Mr. Buckland on the 
Similar masses of pebbles have been collected (See Plate 37) in 
enormous quantities along the plains subjacent to the great oolite 
escarpment on the north-east of Shipston on Stower in Warwickshire, 
particularly on the south of that town towards the escarpment of 
Long Compton Hill. The most common varieties here found are 
rounded fragments of compact granular quartz rock, and common 
white quartz, Lydian stone, gneiss, porphyry, compact felspar, trap, 
sandstone of several kinds, lias, chalk, and chalk flints. 
Between Shipston and Moreton in the Marsh, they have been 
drifted into a kind of bay, formed by the horn-shaped headland of 
the Campden Hills, projecting like a pier-head some miles beyond 
the ordinary line of termination of the escarpment of the great 
oolite formation of the Cotswold Hills. The mouth of this bay 
opens directly to the north-east, from which quarter it is probable 
the current which brought the pebbles had its direction ; for on the 
south-eavSt of Shipston there are pebbles of hard red chalk, such as 
occurs not unfrequently in the Wolds of Yorkshire and Lincolnshire, 
but is never met with in the chalk of the south or south-east of 
England. The nearest possible point therefore to which these 
pebbles of red chalk can be referred, is the neighbourhood of 
Spilsby in Lincolnshire, whence a current flowing from the north- 
east would find an unobstructed passage across the plains of 
Leicestershire to the Bay of Shipston, and Moreton in the Marsh. 
With these pebbles of red chalk are others of hard and compact 
white chalk, such as accompanies the red chalk in the two last 
mentioned countries, and will be shewn in the appendix to occur 
also at Ridlington in Rutlandshire. 
The diluvian current thus impelled into the Bay of Shipston, 
from the north-east, appears to have continued its course onwards 
beyond the head of this bay, near Moreton in the Marsh, bursting 
