208 
LETTER XX. 
pj:ar encrinite of Bradford superior extremity 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 am yet induced to hope that I 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, respecting 
the form and structure of the skeleton, and of its superior as well as of 
its inferior extremity. 
The first, and I believe, indeed, thefonly notice which has been hither- 
to taken of the remains of this animal, is to be found in the “ Descrip- 
tions and Figures of Fetrif actions, found in the Quarries, Gravel-pits, 
^c. near Bath. Collected and drawn by John Walcott, Esq.” Page 46, 
Fig. 6l, 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 Jatter, “ 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, 
