1872.] HICKS TREMADOC ROCKS. 39 



occurring in the eastern Himalayas, and on fully as extensive a 

 scale. In some cases not only the loose soil, but large masses of 

 solid rock were carried down. 



Mr. Drew mentioned other instances in India of a similar cha- 

 racter, but thought that in the western Himalayas frost also assisted 

 in the work of destruction. 



December 4, 1872. 



Edward Crane, Esq., of St. John's Lodge, "Wellington Villas, 

 Brighton ; William Abbott Green, Esq., Inspector-General of Hos- 

 pitals, Bengal, Marchmont House, Leyland Boad, Lee, Kent ; D. C. 

 Davies, Esq., Conygree House, Oswestry ; William Johnston, M.D., 

 6 Gloucester Terrace, Weymouth ; W. M. Cameron, Esq., Drayton 

 Lodge, South Kensington ; W. H. Peacock, Esq., Hoyland and 

 Elsecar Colliery, Barnsley ; Lieut.-Gen. the Hon. A. H. Gordon, C.B., 

 41 Warrior Square, St. Leonards ; E. Wilson, Esq., Nottingham ; 

 and Fitzhugh Bathurst Henderson, Esq., C.E., Plas Gwyn, Gob-Owen, 

 Shropshire, were elected Fellows of the Society. 



The following communications were read : — 



1. On the Tremadoc Bocks in the Neighbourhood of St. David's, 

 South Wales, and their Fossil Contents. By Henry Hicks, 

 Esq., F.G.S. 



[Plates III.-V.] 



The occurrence near St. David's, in South Wales, of rocks sup- 

 posed to be of the age of the Tremadoc Slates of North Wales, was 

 mentioned in a Beport by the late Mr. Salter and myself to the British 

 Association in 1866; and a list of the fossils which had up to that 

 time been discovered in them was also given. Several new forms, 

 however, have since been found in these rocks, and some of them 

 very recently, during researches made at Bamsey Island by Messrs. 

 Homfray, Lightbody, Hopkinson, and Kirshaw, in conjunction with 

 myself. The Brachiopoda were figured by Mr. Davidson in his paper 

 " On the Earliest British Brachiopoda," in the Geological Magazine 

 for July 1868 ; and a supposed land-plant was named by me Eophyton 

 explanatum in the same publication for Dec. 1869 ; but with the 

 exception of these, the whole of the fossils, comprising a rich and 

 exceedingly interesting fauna, are as yet undescribed. 



In the present paper I propose to describe all these new forms, and 

 also to give some account of the lithological characters of the strata 

 in which they occur, their relation to the other formations, and their 

 geographical distribution in the neighbourhood of St. David's. 



On the map (tig. 1) it will be seen that there are three distinct 

 patches of these rocks shown, viz. : — at Bamsey Island, on the eastern 

 coast ; at the north end of Whitesand Bay, and extending for some 

 distance in a N.E. direction ; and in a district about five miles east 

 of St. David's, where they occupy a considerable tract of the country. 



At Bamsey Island they rest conformably on Lingula-flags, which 

 appear here in the usual character of hard Biliceous sandstones inter- 



