454 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Juiie 19, 



The Kimmeridge clay has the usual appearances of that stratum, and 

 contams many specimens of Ostrea deltoidea, Sow., Ammonites, &c. 



The fossils of the lower greensand of this spot are mostly identical 

 with those from the Farringdon beds. The Farringdon sponges, 

 however, have not hitherto been found in Wiltshire. The following 

 is a list of some of the organic remains, and I would direct particular 

 attention to the Terebratidce, as among them will be found some cha- 

 racteristic and important forms. 



Ammonites Nutfieldiensis, Soiv. Terebratula Rceraeri, d' Arch. 



Emarginula Ts'eocomieusis, cVOrh. elongata ?, Brongn. 



Propilidium, sp. Opis Neocomiensis, d'Orb. 



Patella, sp. Pecten, 3 sp. 



Rostellaria, 2 sp. Modiola, 2 sp. 



Trochus, 2 sp. Area, sp. 



Terebratula jNlenardi, LamJc. Lima, sp. 



nuciformis, Sow. Corbula, sp. 



oblonga, Soiv. Nucula, sp. 



tamarindus, Soiv. Asterias. 



latissima, Sow. Diadema. 



Gibbsiana, Sow. Several small corals. 



sella ?, Sow. 



In the lower beds of the sand, rolled fossils and bouldered masses 

 of rock derived from the ELimmeridge clay are abundant. 



Some of the ironstone is very ferruginous, so much so as to have 

 been formerly smelted, and masses of scoriae from the ancient iron- 

 works may be picked up in the neighbouring fields. 



The similarity of the organic remains, the mineralogical character, 

 the position, and the general resemblance of the Devizes beds to 

 those at Farringdon, go far, I conceive, to establish the identity of 

 these interesting deposits ; and a step has thus been taken towards 

 giving " a local habitation and a name" to the remarkable strata at 

 Farringdon, which have so long been the subject of controversy. 



It would appear that both occupy a low position in the Lower 

 Greensand series. It will, however, require a re-examination of the 

 fossils (of which I have obtained a large number) in order to confirm 

 these views. 



2. On the Age and Position of the Fossiliferous Sands and 

 Gravels of Farringdon. By Robert A. C. x4lusten, Esq., 

 F.R.S. G.S. 



The object of the following communication is to give an account of 

 a short geological excursion through parts of the counties of Berk- 

 shire and Wiltshire, by several members of this Society. The party 

 consisted of Prof. E. Forbes, I\Ir. Sharpe, Mr. Prestwich, Mr. Tylor, 

 and the author of this memoir ; they were joined for the first day 

 by Mr. Cunnington of Devizes, and they again had the advantage of 

 that gentleman's knowledge of detail in their visit to his neighbour- 

 hood and Calne. 



I propose to confine the account to the localities and sections 



