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PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Dec. 18, 



and found the sections more clearly exposed than on my previous visit. 

 Owing probably to the unusual rainfall of the autumn, and the conse- 

 quent washing-down or slipping of the softer sands and clays, the harder 

 bands towards the base of the section were unusually well defined. 

 By standing at a little distance, so as to obtain a clear general view 

 of the cliff-section, I now saw that I had hitherto much underrated 

 the thickness of the lower clays. It was now evident that the 

 strata between the so-called " marine band " and the " variegated 

 beds " of the Wealden must amount to a thickness of nearly one 

 hundred feet, or more than twice the thickness I had previously 

 ventured to assign to them. 



The sketch, fig. 1 (which gives a fair representation of the lower 



Fig. 1. — Sketch of lower part of Cliff-section at Punfield Cove. 



B. Laminated sand and clay, with lignite. C. Marine band, with Yicarya. 

 D. Lobster-clay. E. Sandstone and shell -bed, with Lower Greensand fossils. 

 F. Atberfield-clay. G. Grit-bed. H. Shales of Upper Wealden. J. Varie- 

 gated beds of Middle Wealden. 



part of the Punfield Section), indicates very clearly the positions of 

 the various groups of strata to which I have now to refer. 



In this section the strata J represent the so-called variegated beds 

 of the Middle Wealden. 



The strata H, the greater portion of which is covered by vege- 

 tation, consist, where visible, of finely laminated sands and sandy 

 clays. These last resemble very much in appearance the " paper- 

 shales " of the Wealden of Compton Bay and Atherfield, but, so 

 far as I had time to observe them, contain only a few minute fish- 

 bones. 



The next stratum exposed, marked G on section (fig. 1), is the 

 grit-bed described in my previous paper as probably representing the 

 passage-bed between the Wealden and Keocomian. It consists of a 

 layer of hard sandstone or ironstone-grit, passing downwards, within 

 the thickness of a few inches, into limestone, laminated claystone, 

 and paper-shale. The gritstone contains fish-bones and traces of 

 Cypris. The limestone is here and there crowded with Cypris in the 



