23 



metamorpliic action when in contact with surrounding Silurian 

 strata, which is especially observable at Avening Green, where 

 the Shales and Sandstones are remarkably altered. The New 

 Red Marls near Huntingford Mill, with their capping of Rhaetic 

 beds, were examined, and their position with respect to the 

 palaeozoic strata of the west discussed. 



The remarkable absence of all the beds between the "Caradoc " 

 or "May Hill" series, and the "New Eed" or "Keuper" 

 Marls, clearly indicate the deposition of these latter upon the 

 old coast Hne of the Silurian deposits. 



The stone heaps by the wayside, brought for road-metal, 

 yielded many a specimen of the Ammonite, characteristic of the 

 lowest beds of the Lias, Ammonites planorhis — a fact sufficient 

 of itself to demonstrate the range of this zone from Tewkesbury, 

 and all through the Valley of the Severn. From the same 

 sovu-ce was obtained Modiola minima and Ostrea liassica, both 

 typical of the lowest Lias. 



These and numerous other questions bearing on Geology and 

 Archaeology were discussed during the extended walk, which at 

 the close of the day brought the party back to the '^' Boat-house," 

 where a weU-spread table, furnished with fruits from his 

 Lordship's gardens, and wines from his cellar, formed no 

 inappropriate or unwelcome termination to the day's ramble. 



A paper was read by Mr, Witchell on the "Stroud Gravels;" 

 and Mr. Etheridge, of the Geological Survey, gave an outKne 

 of a paper in course of preparation, briefly describing the 

 physical structure of the northern part of the Bristol Coal-basin, 

 having reference chiefly to the IJron ores of the Tortworth area. 



Mr. Etheridge, after alluding to the importance and value of 

 the ores of L-on to man, and their abundance in Great Britain, 

 as also the intimate association of these ores vrith other minerals, 

 such as Coal, Limestone, &c., then drew the attention of 

 members of the Club to the more intimate structure of the area, 

 and, as appropriate to the occasion and circumstances under 

 which they met, of the country traversed on that day. 



Mr. Etheridge's address bore almost exclusively upon the 

 relation of the "faulted rocks" surrounding Tortworth, — or from 



