60° 
In sinking the cylinders at number 10 and 11 Piers in the © 
river, for the Severn Bridge, at a depth of 25 feet below the 
sands, a piece of Boulder-clay (derived from Old Red) was 
brought up, containing N. D. pebbles and one small bit of Oolite. 
There were two feet of Gravel found lying on the top of the 
hard Marl Rock from which the unrolled flint, I hold in my 
hand, was taken. The spot would be about 1,400 feet from 
the shore on the Sharpness side. 
The same Till as at Sharpness is seen on the other side of the- 
Severn, rather lower down, in the cutting of the New Severn 
Bridge Railway to Lydney. 
After the heavy gale some years ago when the Royal Charter 
was lost, Mr. Ciecram directed my attention to the displacement 
of sand caused by the storm in the Severn at Purton which had 
uncovered a considerable quantity of Northern Drift pebbles, 
and some of large size. As to how they got there and on the 
presence of drift on both sides of the river, I hope to have 
something to say in discussing the formation of the Severn, on 
a future occasion. 
To those of our members who have only examined the Gravels 
in our own district near to the Cotteswold range, from which 
they were derived, I am aware how difficult it is to realize ice 
action. But I do not think any one who has visited Limbury, 
an isolated hill, with transported blocks of Silurian, Granite, 
Mountain Limestone, and even Chalk, with some of the former 
bearing evidences of Glacial striations, or has witnessed ice 
marks on the slope of the Malverns, as seen by Mr. EruerimpGE 
and myself, can doubt there was a time when Glaciers passed 
down the valley of the Severn; and how could the Cotteswolds 
have escaped their action ? 
- In the Northern Cotteswolds there are also unmistakable 
evidences of ice action. At Aston Magna I have taken out a 
piece of Chalk embedded in a large angular flint, fully a hundred 
weight not at all water worn, and with dendritic markings 
still on the Chalk; and when the cutting was made, Mr. Ropert 
Tomus, a most trustworthy observer, found striations on large 
blocks of hard Chalk. This cutting at Aston is most remarkable, 
as it shews the N. D. with the Oolitic Gravel upon the top. 
