444 



manifested by their original deep situation, and by the peculiar fossil** 

 which they contain. These are the entrochi and other encrmal remains, 

 so much dwelt on in the second of these volumes. With these remains 

 of different species of encrini, these limestones are in some parts, and to 

 a very wide extent, entirely filled. In the limestone of Dudley, in Wor- 

 cestershire, they are accompanied by a tubiporites (the chain-coral), and 

 some beautiful minute flustrita and milleporita, none of which, any more 

 than the encrinus itself, are ever seen in any of the superincumbent 

 strata. Of this animal, indeed, it may, T believe, be said decidedly, that 

 it must, have been lost ever since the formation of these very ancient 



strata. 



Respecting the stratification of Bradford, near Bath, where we have 

 seen that the pear mcrinite, Vol. II. p, 208, has been so plentifully 

 found, I have no authority to speak decidedly ; I have, however, little 

 doubt, that it would be found to be a portion of a lifted stratum, whose 

 original situation was beneath the blue Lias. As has been just observed 

 respecting the Derbyshire species, so it may be here observed, that no 

 remains of this species have been found in any of the superior strata. 

 Nor has any recent animal been found that could be placed in the same 

 genus with the animals to which these remains belonged. 



Above these strata are those of the alternating COAL SHALES and GRIT- 

 STONES ; and on these is disposed a stratum of RED MARL. Over this is 

 a stratum of SAND ; but neither in this nor the preceding stratum does it 

 appear that any fossils have been noticed. 



THE LIAS CLAY is the next superior stratum, and contains beds of 

 limestOQe called THE BLUE and THE WHITE LIAS LIMESTONE. This 

 stratum has its continuity most decidedly evinced ; it appearing on the 

 coast of Dorsetshire, and ranging through the island, is again seen on 

 the northern coast. 



The fossils of this stratum are exceedingly numerous, and some of them 

 are again seen in some of the superior strata: but the characters of the 



