166 THE BATH OOLITE PERIOD. CHAP. 



FOSSILS OF THE FULLER'S - EARTH ROCK. 



The division in the series of Bath oolites caused by the zone 

 of marly limestones and clays, amongst which one portion was 

 formerly found suitable for the fulling-mill, is nowhere now much 

 exposed to observation, except in the vicinity of Bath. There its 

 organic contents are not numerous, and are on the whole much 

 assimilated to those of the inferior oolite. In the district of 

 Gloucestershire, near Cheltenham and Northleach, where it is 

 occasionally seen, the same aspect of the fauna is observed. Oxford- 

 shire has only a feeble representative of the deposit. The list 

 which follows includes several species from the Bath district, re- 

 corded by the Geological Survey, and others, marked (S.), described 

 by Smith in { Strata Identified,' 1816, and the * Stratigraphical 

 System/ 1817. No one had so much experience of fuller Vearth 

 as Smith in his engineering operations' 1 . His specimens are in 

 the British Museum. 



FOSSILS OF THE FULLER'S-EARTH ROCK. 



ACTINOZOA. 



Anabacia orbulites. Lam. Cubberley. 



ECHINODERMATA. 



Holectypua depressus. Lam. Bradford. (S.) 

 ANNELLIDA. 



Serpula crassa. Sow. Charlton-Horethorn. (S.) 



quadrata. Phil. Orchardleigh. (S.) 

 BRACHIOPODA. 



Rhynchonella concinna. Sow. Cubberley. 

 spinosa. Sow. Somerset. 



varians. Dav. Andover's Ford, Orchardleigh. (S.) 



Terebratula coarctata. Sow Corsham. 

 digona. Sow. Box. 

 globata, Sow. Bath. 

 maxillata. Sow. Cubberley. 

 ,, ornithocephala. Sow. Box. 

 perovalis. Sow. Bath, Cubberley. 

 MONOMYARIA . 



Avicula echinata. Sow. Box, Cubberley. 

 Gervillia. ap. Gloucestershire. 

 Lima cardiiformis. Sow. Box. 

 duplicata. Sow. Somerset. 

 pectiniformis. Zieten. Monk ton-Combe. (S.) 



i See Memoir of W. Smith, p. 60. 



