VOL. XIV. (2) GRAVEL AT MORETON III 
THE GRAVEL AT MORETON-IN-THE-MARSH 
ifs 
BY T, MELLARD READE, C.E., F.G.S. 
(Read June 25th, 1901) 
The subject of drift geology is one which I approach by 
a study of the boulder clays and drift sands of the north- 
west of England, whence I have gradually extended my 
observations to Ireland, the Isle of Man, and the south of 
Scotland. In the north-west of England it is not 
difficult to decide what is “glacial drift,” as it contains 
well-known rocks from the Lake District, and from the 
south of Scotland. I have traced Eskdale granite across 
Cheshire and Shropshire, and as far south as Worcester. 
South of this the evidences become more vague, but there 
is a general drift of quartzite pebbles derived from the 
Trias, mixed with flints, down the Severn Valley; and this 
seems to be joined by another drift of similar nature from 
the north-east down the Warwickshire Avon. 
These drifts have been recognised since the time of 
Buckland as “ Northern Drift ;” and he records the presence 
of hard red and white chalk near Shipston, which must 
have come from Lincolnshire. The northern and north- 
eastern drifts have been traced by W. C. Lucy over the 
Cotteswold area; and, though some of his identifications 
have been disproved or disputed, in the main they seem 
to be accepted. Again, Hull records the occurrence of a 
Millstone Grit erratic near Evenlode, at a level between 
400 and 500 feet above the sea. Compared with what we 
see in the north-west of England and North Wales, the 
