296 



THE GEOLOGIST. 



Kent, Mr. Leech, Mr. Evans, and the author found some specimens at the 

 foot of the cliffs between Heme Bay and the Reculvers. The author believes 

 them to have been derived from a freshwater deposit that caps the cliff, and 

 which has been found by Mr. Evans and himself to yield similar specimens 

 at Swale Cliff near Whitstable. In Bedfordshire, Mr. J. Wyatt, E.G.S., has 

 found some specimens in the gravel at Biddenham, near Bedford ; this gravel 

 also is of freshwater origin, and is younger than the Boulder-clay. In 

 Surrey, a specimen found in the gravel of Peasemarsh twenty-five years ago 

 has been brought forward by its discoverer, Mr. Whitburn of Guildford. In 

 Herts, Mr. Evans has found a specimen in the surface-drift on the Chalk 

 Hills, near Abbots Langley. Lastly, the author recommended that diligent 

 search be made in the gravel and brick-earth at Copford and Lexden near 

 Colchester, at Grays and Ilford in Essex, at Erith, Brentford, Taplow, Hurley, 

 Beading, Oxford, Cambridge, Chippenham, Bath, Blandford, Salisbury, 

 Chichester, Selsea, Peasemarsh, Godalming, Croydon, Hertford, Stamford, 

 Orton near Peterborough, &c. 



3. " On the Corbicula (or Cyrend) fluminalis geologically considered." By 

 J. Gwyn Jeffreys, E.R.S, E.G.S. 



Mr. Jeffreys has identified the species of Corbicula found by Mr. Prestwich 

 in a raised sea-beach at Kelsey Hill in Yorkshire with that of the Grays de- 

 posit, as well as with the recent species from the Euphrates and the Nile. He 

 mentioned the great tendency to variation in freshwater shells, and the distri- 

 bution of the same species throughout different and widely separated parts of 

 the world ; and he therefore considered that there was no difficulty in sup- 

 posing that the Corbicula was contemporaneous in this country with Arctic 

 shells found with it at Kelsey Hill. According to Mr. Jeffreys, specimens 

 of Testacea from the north are larger than those of the same species from 

 southern localities. 



May 22, 1861. 



1. "On the Geology of a part of Western Australia." By E. T. Gregory, 

 Esq. Communicated by Sir R. I. Murchison, Y.P.G.S. &c. 



The author first described the granitic and gneissose tract of the elevated 

 table-land ranging northwards from Cape Entrecasteaux and comprising the 

 Darling Downs. The igneous rocks and quartz-dykes, the clays, sandstones and 

 conglomerates capping the table-land ; and the carboniferous, cretaceous (?), 

 and pleistocene rocks were described, and some evidences of the recent eleva- 

 tion of the coast brought forward. The following fossils from Western Aus- 

 tralia were exhibited : Carboniferous fossils and cannel-coal from the Irvin 

 River; Eossils of secondary age {Trigonice, Ammonites, and fossil wood) from 

 the Moresby Range ; fossil wood from the Stirling Range and from the Upper 

 Murchison River ; "Ventriculites in flint from Gingin ; and Brown-coal from the 

 Fitzgerald River. 



2. " On the Zones of the Lower Lias and the Avicula contorta Zone." By 

 Charles Moore, Esq., E.G.S. 



Referring to a paper on this subject, by Dr. Wright, which appeared in 

 the sixteenth volume of the Society's Journal, the author stated that details 

 of the section at Beer-Crowcombe (near Ilminster) in Somersetshire are now 

 more fully known than they were when the Rev. P. B. Brodie, after having 

 been taken to see that section by the author, communicated to Dr. Wright 

 the notes on it that are published in the paper above referred to. In the 

 first place, Mr. C. Moore described the characters of the Liassic beds at 

 Ilminster, and their relations to the Avicula contorta beds and the Keuper as 

 seen in passing from Ilminster through Beer-Crowcombe to Curry-Rival and 

 North Curry, — a distance of ten miles. He then treated of the subdivisions of 

 the Lower Lias and the true position of the " White Lias ;" and stated that, 



