120 PKOCEEDINGS OF THE GEOLOGICAL SOCIETY. 



May 21, 1890. 



Dr. A. Geikie, E.R.S., President, in the Chair. 



George Pletcher, Esq., 53 Sale Street, Derby ; and Thomas Ward, 

 Esq., J.P., Brookfield House, Northwich, were elected Eellows of 

 the Society. 



The List of Donations to the Library was read. 



The names of certain Eellows were read out for the first time, in 

 conformity with the Bye-laws, Section YI. Article 5, in consequence 

 of the non-payment of arrears of contributions. 



The following communications were read : — 



1. "On some Devonian and Silurian Ostracoda from North 

 America, Erance, and the Bosphorus." By Prof. T. Eupert Jones, 

 E.R.S., E.G.S. 



2. "On the Age, Composition, and Structure of the Plateau- 

 gravels of East Berkshire and West Surrey." By the Eev. A. Irving, 

 B.A., D.Sc, E.G.S. 



3. "Eurther jSTote on the Existence of Triassic Eocks in the 

 English Channel off the Coast of Cornwall." By E. N. Worth, 

 Esq., E.G.S. 



[Abstract.] 



Specimens of a Triassic breccio- conglomerate, trawled seven miles 

 south of the Deadman Headland, and several miles east of the pre- 

 viously recorded* Lizard outlier, are described. These fragments 

 were brought up in a small trawl used for dredging Pectens, and are 

 considered to have formed part of a jagged submarine reef. They 

 are thin slabs, both faces of which were clearly free, as they are 

 covered with marine growths, animal and vegetable ; and in situ 

 they must have had an approximately horizontal projection, on ac- 

 count of the different extent and character of these growths. The 

 rock contains angular and subangular materials, with small pebbles 

 in the finer portions. Its constituents are — slate (apparently De- 

 vonian), fine grits, vein-quartz, quartz-felsites (some micaceous), 

 and andesitic rock, like the " felspathic traps " found as far west as 

 Cawsand ; also rhyolitic rock and kaolinized felspathic matter. 



4. " On a new species of Coccodus (C. Lindstroemi, Davis)." By 

 J. W. Davis, Esq., E.G.S., E.L.S. 



* Quart. Journ. Geol. Soc. vol. xlii. ]886, p. 313. 



