Geological Society. 397 
number, variety and beauty of the organic’ remains which 
are imbedded in it. In the Isle of Wight basin it occurs 
at Allum Bay, at Hardwell Cliff in Hampshire, the foe 
sils of itch: are uncommonly perfect and, beautiful ; 
Stebbington near Portsmouth, ‘at Portsmouth. itself, ated 
Portsmouth westward to Pagham harbour ; at Bognor it is 
very sandy and calcareous, and possesses the solidity of 
rock, but contains the same fossils as the pure clay does, 
The ted of the channel between Hampshire and the 
Isle of Wight consists of this clay. 
In the London basin this bed is even more extensive than 
in the Isle of Wight basin. On the south side of the 
Thames its eastern boundary is at Reculver: it then ap- 
pears at Swale Cliff and Whitstable: it forms the whole 
of Sheppey, rising on its northern coast into cliffs 200 feet 
high: at Sheerness it has been sunk through at the depth 
of 330 feet; to which if the height of the “cliffs be added, 
the probable thickness. of this bed in. this part is above 
500 feet. 
The fossils of Sheppey, both animal and vegetable, are very 
numerous, especially the latter, as is evident from the exten- 
sive collection of them made by Mr, Francis Crowe, of 
Faversham. 
The elevated ground to the north of London, including 
Primrose Hill, Harrow, Hamptstead, Highgate, and Mus- 
well Hills, consists almost wholly of this stratum. At 
Brentford and Wimbledon its thickness is from 200 to 
above 500 feet. It appears to form the greatest part of the 
Surface of Essex and Suffolk, and constitutes. the lower 
part of the cliffs of Walton and Harwich. 
Nov. 19.—Dr. MacCulloch, Vice-President, in the chair, 
‘Lieut, Col. Congreve, M. P. F.R.S. 
W.E. Sheffield, Esq. of Somers Town ; 
John Rennie, Esq. F.R.S. Civil Engineer, were severally 
elected Members of the Society. 
The continuation of Mr. Webster’s paper was read. 
Having in the preceding portion of his paper described 
the chalk with its superincumbent beds as far as the great 
blue clay inclusive, as they present themselves in the south 
of England, Mr. W. proceeds to compare them with the 
analogous beds j in the basin of Paris. 
The chalk formation of France appears to correspond with 
that of England, both in its general characters and in the 
fossils which it contains. A chalk without flints occurs in 
Champagne ; but whether this bed is, as with us, interior to 
the flinty chalk has not been mentioned, on 
e 
