﻿368 Reports and Proceedings — Geological Society. 



I. — CoTSwoLD Field Club. —The o2nd anniversary meeting of the 

 Cotswold Club, under the presidency of Sir W. V. Guise, Bart., 

 F.L.S., etc., took place on April 14, 1877. It was also the 19th 

 annual meeting presided over by its president. About thirty 

 members attended to hear the address and to arrange for the 

 meetings and general business of the coming season. The club then 

 adjourned to the School of Art to hear Mr. W. C.Lucy's paper on " The 

 Extension of the Boulder-clay and Drift over the Cotswold Eange." 



Mr. Lucy referred to a former paper read before the Club in 1869, 

 in which he stated that he had not found Northern Drift pebbles at 

 a higher elevation than 750 feet, confirming the observations made 

 many years ago by Prof. Hull, when surveying the district. Mr. 

 Lucy also mentioned that he was not aware of the presence of 

 Boulder-clay, unless some clay which had been found in the partings 

 of a quarry at Woodchester, with a small quantity of pebbles im- 

 bedded in it, should prove to be it. The special object of his paper 

 seemed to be the discover}^ of the same highly silicified clay in 

 vai'ious parts of the Cotswolds, including tlie highest point of Cleeve 

 Cloud. This clay he had had analyzed by Prof. Church and Mr. 

 Embrey, and the result, as will be seen by the following table, showed 

 so marked a resemblance in the per-centage of silica as to leave 

 no doubt that it was all derived from the same source ; and from 

 the Northern Drift pebbles being found with it, Mr. Lucy classed ii 

 as belonging to the Boulder-clay period, indicating that the whole 

 of the Cotswold range was submerged during that time. Mr. Lucy 

 also traced the same clay in a gravel-pit in the vale at Frampton, 

 which clay he believed was once on the higher ground, and from 

 the weathering of the friable Oolitic rocks, had been brought into 

 its present position. 



Woodchester Cleeve Symonds PainsTrick Frampton 

 Park. Cloud. Hall Farm. Hill. Gravel Pit. 



Silica ... 70-50 67-2 69-58 68-2 69-60 



Mr. Lucy further pointed out the undoubted presence of ice action, 

 as shown at Limbury, and at Aston Magna, and other parts of the 

 Upper Cotswolds, and explained that striations were not found in 

 the Gloucester area owing to the soft character of the Oolitic rocks. 

 We cannot follow him in the account he gave of the grooving of the 

 Lias in the valleys upon which some of the gravels rest, nor the 

 very difficult and complicated second Boulder-clay to which he 

 referred. 



IL — Geological Society of London. — June 20, 1877. — Prof. 

 P. Martin Duncan, M.B., F.R.S., President, in the Chair. 



The following papers were read : 



1. " On a Hitherto Unnoticed Circumstance Affecting the Piling- 

 up of Volcanic Cones." By Pt. Mallet, Esq., F.R.S., F.G.S. 



After some remarks upon the two forms of volcanic activity, the 

 .earlier system of "fissure eruption," and the present one of " eruption 



