BATH OOLITE SERIES. 159 



resting upon brown sandstone which immediately covers the upper lias 

 shale. There is no reason to doubt the identity of the oolites of Lincoln, 

 Cave, Sancton, Westow, and the vicinity of Brandsby and Coxwold ; 

 and though we cannot directly trace the connexion across the moorlands, 

 the gray limestone of Sneaton, Hawsker, Cloughton, and White Nab, 

 may be added to the synonyms. 



It has been already remarked that the dogger or inferior oolite, is a 

 bed of extremely irregular occurrence and varying character, both on the 

 coast and in the fronts of the Cleveland hills ; and it cannot, without diffi- 

 culty, be traced southward beyond the Derwent. On the hill at Craike, 

 it is a brown sandstone, remarkably similar to that which covers the lias 

 shale near Lincoln, Belvoir Castle, and Uppingham. In some parts of 

 Northamptonshire it includes beds of white oolite, and, therefore, it may 

 be presumed to represent the inferior oolite and the subjacent sand of the 

 neighbourhood of Bath. Hence it follows, that the gray limestone of 

 the Yorkshire coast is equasval with the great or middle oolite of Bath ; 

 and the roadstone of Brandsby, and a similar stratum in Lincolnshire, 

 may be referred to the forest marble or Stonesfield slate. 



The distribution of the organic remains in the slaty rock of Brandsby, 

 middle oolite, and inferior oolite, has yet been carefully ascertained at 

 only a few points ; and the following observations will probably, here- 

 after, receive several corrections. At present, it appears to me that the 

 roadstone is characterized by the great abundance of gervillia acuta, and 

 crassina minima, and by the presence of pholadomya acuticostata, ros- 

 tellaria composita, and the genus Action. Where this rock is united 

 with the middle oolite, as at White Nab, these fossils commonly lie near 

 the top ; where it is entirely deficient, (as at Ewe Nab,) they are scarcely 

 to be found. The top of the middle oolite (as under Gristhorpe cliffs, at 

 Ewe Nab, Owlston, and Ellerker) is generally marked by abundance of 

 millepora straminea, and plates and spines of echini, and columnar joints 

 of pentacrinus caput Medusas. In the substance of the rock occur 

 belemnites, isocardias, pholadomya?, cucullaese, pernae, pinna?, plagiostoma?, 



