228 Observations on the 



No. 6, 7, 8, are bivalve shells, probably referrible to the genus Cardi- 

 um ; they are represented about the natural size ; 6 and 7 retain the 

 shell itself, and appear almost recent, but the interior of No. 7 is filled 

 with the limestone and fragments of shells connected together suffici- 

 ently hard to take a polish. In No. 8 the shell itself has disappeared, 

 and left merely a cast in whitish limestone. 



Plate II. Nos. 1 and 3, are Echini of the order Spatangus, common in 

 the chalk of England. No. 2 is a small but perfect specimen. No. 1 is 

 a portion of the external shell flattened out on the stone. 



No. 3. — This is apparently the apex of a Turbinolia : it is not unfre- 

 quent in the limestone, and was sometimes found detached, in which 

 case it precisely resembles the drawings of the Turbinolia given by Dr. 

 Mantell, in his Geology of the South-east of Sussex ; but is apparently 

 of a larger species. 



Nos. 4, 5, 6, 7, 8, are fragments of a zoophyte, or coral, with a pyri- 

 form body or termination, which is always found detached (No. 4) ; 

 other fragments are cylindrical. This zoophyte seems to have consisted 

 of numerous small lamellae, converging towards the centre : but there 

 was probably a cavity in the centre, which is now filled up with the 

 chalky substance, as the lamellae do not unite at the axis. No. 6 shows 

 the radiated appearance presented by the transverse section of a cylin- 

 drical joint or fragment, and 7 and 8 display the internal structure 

 where it is laid bare by the decomposition of the external covering. 

 These fragments are probably the joints of the stem or branches of the 

 zoophyte, which may possibly therefore, have been the Apiocrinites 

 ellipticus; but until more perfect specimens are found, it cannot be named 

 with any degree of certainty. The component matter of this fossil is 

 carbonate of lime, and it effervesces freely with acid. They are found 

 in great numbers close to the village of Seedrapett. We collected up- 

 wards of an hundred in about half an hour, and one of the best speci- 

 mens I took out of the wall of a mud house. 



No. 9 is a small mass of limestone, displaying on both sides beautiful 

 sections of a multilocular shell, which Mr. Burr informs me is a Turrilite. 



No. 10. A great number of small cylindrical bodies of this descrip- 

 tion were found, the longest perhaps 1§ inch in length, and about the 

 thickness of a tobacco-pipe : they all have a longitudinal groove or sul- 

 cus, whence it may be inferred that they are a species of Belemnite, 

 perhaps B. minimus; but it must be mentioned that among the hun- 

 dreds that were collected, and the still more numerous specimens that 

 were thrown aside, not one was found which came to a point. Further 

 research may, perhaps, supply this deficiency. 



