2W VARIOUS PEBBLES COLLECTED NEAR SHIPSTON. 
They have also been collected in prodigious numbers along the 
plains subjacent to the escarpment of the oolitic limestone that 
crosses Warwickshire, near Shipston-on-Stour; particularly on the 
south of that town, at the base of Long Compton Hill. (See Plate k 
XXVII.) They are here accompanied by pebbles of white quartz, 
lydian stone, gneiss, porphyry, compact felspar, trap, sand-stone 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, which projects like a pier-head some miles be¬ 
yond the ordinary line of the great limestone chain 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 
in question had its direction; for on the south-east of Shipston there 
are pebbles of a hard red species of chalk, which occurs not unfre- 
quently 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 diluvial 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 accom¬ 
panies the red chalk in the two last mentioned counties, and which 
occurs also at Kidlington, in Rutlandshire. 
the Lickey Hill, in the 5th vol. of the Geological Transactions, from which this extract 
relating to the diluvial part of their history is transcribed. 
