220 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Feb. 8, 



(a) Atherfield Clay. Grey clay with usual characters ... 4 to 5 feet seen. 

 (6) Perna-heds with usual characters, but more weathered 

 than at jitherfield, and of a brown instead of a green 

 colour ; consisting of the following divisions : — 

 a. Hard brown sandstone (fossils very abundant). 

 Perna MuUeti, Desk. 

 Bxogyra sinuata, Sow. 

 Gervillia anceps, Desk. 

 Panopaea plicata, Sow. 

 Modiola. 

 Peeten, sp. 

 Trigonia aliformis, Park. 



Thickness rather irregular but about 2 feet. 



(This bed passes gradually into) 



13. Greenish-grey sandy clay with many fossils nearly 4 feet. 



y. Bed similar to a, with Ancyloceras and other shells 1 foot, 



(passing in its lower part into greenish-grey sandy 

 clay, and so into) 



(c) Blue paper-shales of the Wealden 9 inches. 



\d') light-coloured and pyritic 1 foot. 



(e) Dark-coloured paper shales (with Cypridea valdensis) 



and several layers of nodular ironstone 4 feet ? 



(/) "Beef" linch 1 



Limestone crowded with Cyrena and a few oysters, I q . , 



6 inches , [ 



"Beef" 2 to 3 inches J 



{g) Finely laminated pyritic clay 9 inches. 



(h) Ferruginous band almost entirely made up of shells 



(oysters and small uni vales) 3 inches. 



(k) Other beds of dark blue laminated shales, with oc- \ between 



casional beds of limestone, imperfectly exposed ... J 30 to 40 feet seen. 



The total thickness of the Cowleaze series cannot he esactly 

 measured in Sandown Bay. In the marine hands I found Exogyra 

 sinuata, Sow., E. BoussingauUii, D'Orh., Corbula striatula, Sow., 

 Cardium suhhillanum, Leym., with vertebrae and teeth of fish 

 (Lepidotus, &c.), and plant-remains. In one of the " Cinder " beds 

 at this place Dr. Eitton found an imperfect but undoubted specimen 

 of an Ammonites *, and I have myself obtained what appears to be a 

 fragment of Ammonites Deshayesii, Leym. The yellow sands of the 

 Barnes series are seen in Sandown Bay, and where they come to 

 the surface form a well-marked escarpment, that on which Yaver- 

 land Fort is built. Here, however, the beds are not favourably 

 situated for examination. 



V. Sections in the "Weald oe Sitssex, Siteret, and Kent, 



The "Wealden strata of this area, presenting few exposures in 

 sea-cliffs, are not so well known as those of the Isle of Wight and 

 Dorsetshire ; but there are not wanting indications that, like these 

 latter, they graduate upwards through fluvio-marine beds into the 

 Upper Neocomian, which everywhere conformably overlies them. 



1. Leith Hill. In the Museum of this Society there is a series of 

 fossils from Leith HiU, near Guildford, accompanied by a section in 

 which the marine beds at the base of the " Lower Greensand " are 



* Trans. Geol. Soc. 2nd Ser. vol. iv, p. 190. . . 



