The three specimens of encrinital remains, still adherent to their 

 chalky matrix, Plate XIII. Fig. 31, 38, 39, decidedly belong to a 

 species entirely different, especially in its mode of ramification, from 

 any which have been hitherto noticed. 



The curious mode in which the ossiculoe are articulated in these 

 specimens is particularly deserving to be remarked ; it is therefore 

 carefully made out in the specimen, Fig. 31, where the form of the 

 arms seems to warrant the appropriating to this species of encrinite, 

 the appellation of the STAG'S-HORN ENCRINITE. 



The calcareous fossil, Plate XIII. Fig. 77> with an extended flat 

 base, gradually assumes a columnar form, and terminates upwards in 

 a small round crenulated surface, pierced with a hole which passes 

 through the substance of the fossil. There can be little doubt, that 

 this fossil has been the organ of attachment of some minute animal 

 of the genus encrinus. This is confirmed by the appearance of its 

 under part, which shows no fitness for motion, but appears to have 

 been well formed for securing its adherence to any other substance. 



The probability of this conjecture being correct, is increased by the 

 appearances yielded by the next fossil, Plate XIII. Fig. 78, which is 

 a small, long, slender trochital vertebra, agreeing so nearly in its 

 size, colour, and articulating surface with the preceding fossil, as to 

 give strong reason for supposing that a series of these formed the ver- 

 tebral column to which it served as pedicle. 



The fossil represented, Plate XIII. Fig. 79? has been long noticed 

 by oryctoligsts for its close resemblance in form to a clove ; from 

 which circumstance it derived the name, Caryophillus lapideus, which 

 is in general applied to it. Various have been the opinions enter- 

 tained respecting it, some having believed it to be actually a petrified 

 clove ; others, that it was part of the spine of an echinus of a particu- 

 lar form. Lhwydd seems to have been the first who entertained a ra- 

 tional opinion respecting its origin. Referring to a specimen which he 

 had received from Germany, and to the only specimen which he had 



