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PROCEEDINGS OF THE GEOLOGICAL SOCIETY. 



[Apr. 24, 



flints, however, are angular. The large gravel, d, contains with the 

 sand in the interstices between the boulders a certain number of the 

 shells hereafter named*. 



Towards the central part of the pit, now in course of being- 

 worked, the gravel is finer and the shells more numerous and per- 

 fect. So abundant are the shells and so regular the bedding, that in 

 the following section the deposit has quite a Crag-like appearance. 

 Some 3 or 4 feet of a larger and coarser gravel has been removed 



from the top of this section. 

 The shells in b are extreme- 

 ly numerous, — the Tellina, 

 Cardium, Mactra, Buecmum, 

 Littorina, Nassa, Natiea, 

 andPurpura preponderating, 

 with the Oyrena, whichhard- 

 ly yields in abundance to any 

 of the others. The Anomia; 

 Corbida, Numla, Venus, 

 Mureoc, and Fusus are rare*. 

 Almost all the shells are 

 worn, and have the ap- 

 pearance of having been 

 dead shells cast up on a 

 beach or a bank. The bi- 

 valves are more perfect than 

 the univalves, which are for 

 the most part more or less 

 Generally the shells are but 

 little decomposed, many of them retaining even some of their colour. 



I am indebted for the following revised list "f" and remarks to Mr. J. 

 Gwyn Jeffreys, F.R.S., F.G.S., &c. 



MOLLUSCA. 



[These are alphabetically arranged, but according to the nomenclative of Forbes 

 and Hanley. The species marked with an asterisk are not in their list.] 



No. Species. Remarks on the comparative 



frequency, &c. 



Bivalves. 



1. Anomia ephippium Asinglevalve,noticedbyMi\Leckenby. 



2. Astarte compressa A fragment. 



3. Cardium edule Common : the ordinary form. 



* Another locality mentioned by Professor Phillips is Brandesburton, 15 miles 

 northward from Kelsey. I had not time to visit this place, but my friend Mr. 

 Smith, of Hull, lias recently been there, and he reports to me that the gravel 

 forms a ridge of low hills which have been worked for centuries. At the pits now 

 open, shells are very scarce. The specimens he has sent me are only worn frag- 

 ments of Cardium cdule, Tellina solidula. and Pholas crispata (?). The locality, 

 however, is important as showing more distinctly than at Kelsey Hill the super- 

 position of the gravels in the Boulder-clay ; for at the village a deep well has been 

 sunk, which, after passing through the lower 10 or 12 feet of gravel, traversed 60 

 feet of clay with stones (Boulder-clay) ; below this was a bed of flinty gravel, and 

 then the Chalk at a depth of about 80 feet. 



t Tins list is more copious than the one I first gave, and is the result of an ex- 



Section close- adjoining the Railway at 

 the Ballast-pit, Kelsey Hill. 

 s.w. S.E. 



a. Gravel and sand. 



b. Fine gravel and sand, with veins of 

 coal-smut, full of shells. 



c. Sand and gravel, in oblique layers 

 and with fewer shells. 



broken, especially the large Buccinum. 



