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LETTER XX. 



PEAR ENCRINITE OP BRADFORD. ...SUPERIOR EXTREM1T Y.... INFE- 

 RIOR EXTREMITY FOUND ALSO AT PFEFFINGEN. 



ALTHOUGH aware of the very imperfect state of the several fossils 

 which I shall place before you, in illustration of the next species of 

 encrinite, I arn yet induced to hope, that 1 shall be able not only to 

 satisfy you of its having existed as a distinct species, but to supply 

 you with the means of forming a tolerably correct notion, respect- 

 ing the form and structure of the skeleton, and of its superior as well 

 as of its inferior extremity. 



The first, and I believe, indeed, the only notice which has been hither- 

 to taken of the remains of this animal, is to be found in the " Descrip- 

 tions and Figures of Petrifactions, found in the Quarries, Gravel-pits, 

 (j-c. near Bath. Collected and drawn by John JFalcott, Esq." Page 46, 

 Fig. 6'1, seven of the connected vertebrae, and one of these separated, 

 are figured by Mr. Walcott, whose only account of the former is "a co- 

 noid body of seven joints;" and of the latter, "one of the joints, except 

 a small breadth from the edge, which is flat, both sides are concave, 

 which makes the edge of the hole, which is in the centre, very thin. 

 Found in the pits from whence they dig stone to make the new road 

 leading from Kingsdown to Bradford, &c." 



Not being able to obtain any farther information respecting this 

 fossil,than the little which was yielded by Mr, Walcott's account, I, 



