OF THE ISLE OF WIGHT. 21 



following view is abstracted from Mr. Prestwich's paper, 

 shewing the probable foreign equivalents : — * 



f Upper and Lower Headon Hill 

 Upper Group. | Marls and Limestones. 



[^ Headon Hill Sands. 

 Middle Group. ^ London Clay (upper division). 

 [ London Clay (lower division). 



f Bognor Beds J^^ '^ — "=• 



Lower Group. -I t Sables infeneurs. 



[. Mottled clays and sand. . . Argile plastique. 



* In a nibseqaent commonication to the Geological Society, (Proceeding*, Feb. 3, l&J",) 

 Mr. Prestwich considers that the term " London Clay," which, faOowing the nxoaUy re- 

 ceired nomenclature, he has applied in the abore table to the equivalents in the Isle of 

 Wight basin, of the Barton and Bracklesham beds of Hampshire and Snsaex, most be 

 abandoned; for in his paper it is clearly shown that the " London Clay" of the I/mdon 

 basin ia not vynchronoos with the Barton and Brackleabam depoata. 



Upper calcaire 

 grossier. 



Lower calcaire 



grossier, and 



Glauconie grossiere 



uilliers. 



LOCALITIES FOR FOSSILS, &c. 



Headon Hill and Colwell Bay; Hampstead Cliff; Shalcombe, near 

 Cowes ; Binstead near Ryde, 'Wliite Cliff Bay, Isle of "Wight. 

 HordweU Cliff, Hampshire. 



LIST OF PUBLICATIONS, &c. 



Lyell, C. 'On thefresh-water strata of Hordwell Cliff, Geol. Traiu.Yolu. 



Ljd\,C.' Elements of Geology,^ (Eocene Formations), v. L p. 336. 



Owen, Prof. R. ' British Fossil Mammals and Birds' 



Prestwich, J. ' On the Tertiary Formations of the Isle of Wight,' &c. 

 Quart. Geol. Joum. vol. ii. p. 223. [This paper contains a 

 list of all the previous publications on these deposits,] 



Sedgwick, Rev. Prof. 'Annals of Philosophy,' 1822, p. 339. 



Webster, T. ' On a Freshwater Formation in Hordwell Cliff, Hamp- 

 shire, and on the subjacent Beds from Hordwell to Muddiford.' 

 Geol. Trans, vol. i. 



Wood, S.V. ' On the Discovery of an Alligator,' &c. Geol. Joum. No. 1. 



