6 



ranging from a little north of Bredon Hill in Gloucestershire, to 

 Inkberrow, north of the road from Alcester to Worcester. By this 

 fault the relative position of the red marl and the lias has been af- 

 fected, the former constituting a valley of elevation, bounded on each 

 side by the latter. Mention is also made of bones and teeth of the 

 Hippopotamus and of a Deer having been found in the gravel near 

 Cropthorne, between Evesham and Pershore. Mr. Strickland like- 

 wise alludes to the occurrence, on Shotover Hill near Oxford, of 

 fossils which he believes to belong to the fresh-water genus Palu- 

 dina; but the specimens wliich he procured are imperfect casts. 

 These shells, he adds, were first discovered by the Rev. H. Jelly of 

 Bath, in a sand-pit on the brow of the hill, much higher than the 

 pit at which the Portland strata occur. 



A paper on the Strata of Quainton and Brill in Buckinghamshire, 

 by James Mitchell, LL.D., F.G.S., was then read. 



In this communication the author confines his observations almost 

 solely to an enumeration of the beds belonging to the Portland stone, 

 presented at the two localities of Quainton and Brill. 



The principal quarries at the former place are composed of the 

 following strata : 



Feet. 



Top Vegetable mould 3 



Clay _ — ? 



Iron sand (lower green sand) containing a layer of! 



Fuller's earth / ^ *° ^ 



Hard sandstone 1 to 2 



Clay 2 



Soft, calcareous sandstone (Pendle stone) abound- "1 ^ 



ing in fossils J 



Building stone, — numerous fossils 2 



Soft, white limestone 2^ 



Sand 6 



Rubble stone, — abundance of fossils 3 



Sand 6 



Coarse, soft, blue stone 1^ 



Besides the fossils common to the Portland stone, the author pro- 

 cured caudal vertebrae of a Plesiosaurus and a Crocodile. 



The strata at Brill are then enumerated in the following order : 



Feet. 



Vegetable mould 4 



White, soft limestone, with fossils 7 



Sand 3 



Rubble, with fossils 4 



Sand and clay, with nodules of blue stone in the") c 



lower part j 



Coarse, white sand 2 



Blue clay 2 



In the lower part of this quarry is an abundance of green sand. 

 The upper beds of stone in the Quainton quarries, the author 

 adds, are wanting in those at Brill ; and the lower beds at each 



