420 



Top — 1. Yeliow coarse sand, containing a few pebbles, but no 

 shells, three to six feet. 



2. A layer of decayed vegetable matter, varying in thickness from 

 half an inch to three inches. 



3. A bed fourteen feet thick to high-water mark, composed, in the 

 upper part, chiefly of sand, and in the lower of clay. It contains a 

 few fragments of the new red sandstone of the adjacent district, and 

 numerous erratic pebbles of granite, syenite, greenstone, limestone, 

 grauwacke, quartz-rock and sandstone. These pebbles vary in size 

 from half an inch to six inches in diameter : associated with them 

 are a few blocks, some of which are estimated to weigh a quarter of 

 a ton each. It is in this bed, but particularly in the lower part, that 

 the author found the marine remains, which he describes as belonging 

 to the genera Cardium, Turritella, and Buccinum ; but he observes, 

 that they occur only as fragments, agreeing, in their state of preser- 

 vation, with those which he discovered on a former occasion at Moel 

 Tryfan, on the flank of Snowdon. 



These data the author considers afford proofs of three distinct 

 operations : 



1st, An irruption of the sea bringing with it fragments of sea-shells 

 and of rocks not existing in situ in the neighbourhood. 



2ndly, The deposition of the layer of peat. And 



3rd!y, The accumulation of the bed of sand forming the upper por- 

 tion of the section. 



The author, in pursuing his inquiries, found, on the top of the 

 sandstone quarries at Weston, near the locality above described, and 

 at a height exceeding 1 00 feet above the level of high-water mark, 

 a bed of sandy loam, containing similar erratic pebbles; but he was 

 not able to discover in it any marine remains. 



Feb. 6. — John Taylor, jun. Esq., of Coed-ddu, Flintshire; Richard 

 Taylor, Esq., of Perran, Arworthal ; Richard Davey, Esq., of Red- 

 ruth, Cornwall ; Henry Enfield, Esq., of Raymond Buildings, Gray's 

 Inn ; and P. J. Martin, Esq., of Pulborough ; were elected Fellows 

 of this Society. 



A paper was read, entitled " Notes to accompany a Map of the 

 Forest of Dean and the Country adjacent, coloured geologically," by 

 Henrv Maclauchlan, Esq. F.G.S., employed in the Ordnance Survey. 



The author commences his memoir by acknowledging the aid which 

 he received from his colleagues employed in the Ordnance Survey, 

 Messrs. J. and R.Wright and Mr. Carrington ; and the valuable assist- 

 ance afforded him by the Rev. W. D. Conybeare, Dr. Buckland, Mr. De 

 la Beche, Mr. Mu'shet, Mr. H. James, Mr. Bathurst, Mr. Ormerod, 

 Mr. M. Teague, Mr. Bennett, and Mr. Hale. 



The district coloured by the author comprises an area of about 1000 

 square miles. Its western boundary is denned by a line passing from 

 Gold Cliff, near Newport, to Preston on the Wye, eight miles N.W. 

 of Hereford; and its eastern by another ranging from Didmarton to 

 Stroud, Gloucester, and Hanley Castle, four miles E. of Malvern. 



The author first describes the band of transition limestone which 



