328 Reports and Proceedings — -Oeological Society of London. 



2. " Contributions to the Geological Study of Count}' Waterfovd. 

 Part I, § 1 : The Lower Paleeozoic Bedded Rocks of the Coast." 

 By F. R. Cowper Reed, Esq., M.A., F.G.S. 



This paper opens with an account of the previous publications on 

 the geology of the district, and then goes on to descinbe the sections 

 exposed along the coast at the following localities : — Raheen and 

 Newtown Head, Tramore Bay, Garrarus and Kilfarrasy, Annestown 

 and Dunabrattin, Knockraahon, Ballydouane Bay, and Killeltou 

 Cove to Ballyvoyle. These sections expose shales and limestones 

 with abundance of igneous rocks partly interbedded, but mainly 

 intrusive ; and the author is able to make the following succession of 

 rocks, tabulated in descending order : — 



4. Raheen Series. Mudstones, slates, felsites and tuffs, and fossiliferous shales. 



3. Carrigaghalia Series. Graptolitic shales, thin flags, cherts, tuffs, and felsites. 



2. Tramore Limestone Series. Divided into three stages. 



1. Tramore Slates. Calcareous and argillaceous slates. 



Nos. 3 and 4: are represented by barren limestones at Dunabrattin, 

 and 1, 2, and 3 by felsites and tuffs at Newtown Head. 



The paleeontological portion of the paper gives the previously 

 published lists of fossils, including those recorded by McCoy in his 

 " Synopsis." The author has examined and re-identified all McCoy's 

 specimens. A further list gives the peculiar species hitherto found 

 in the British Islands only in Waterford. The chief species are 

 then dealt with in detail : a number of new species of trilobites and 

 brachiopods, and one new genus of trilobites, being described. 



Petrological notes of the interbedded igneous rocks are next 

 given. These are lavas and tuffs, all acid in composition and 

 possessing from 75 to 78 per cent, of silica. The groundmass is 

 generally cryptocrystalline, but spherulitic, granophyric, nodular, 

 perlitic, and fluxion structures are common. Phenocrysts do not 

 appear to be common ; plagioclase-felspar predominates over quartz, 

 and that over orthoclase, but ielspar-microlites are of frequent 

 occurrence. 



The author has previously compared the Tramore Limestones 

 with the Balcletchie Shales of Scotland ; but he now considers that 

 they mainly represent beds on a lower horizon, as they are overlain 

 by rocks displaying a Glenkiln facies. The fauna of the Limestones 

 themselves presents so peculiar a facies that they have often been 

 considered to be of Bala age. Although the graptolites of the 

 Carrigaghalia Series correspond with those of the Dicranograptus- 

 shales of South Wales, the underlying (Tramore) limestone has not 

 the fauna of the Llandeilo Limestone, but corresponds more nearly 

 with the Or//<oce/-rts-limestone of Sweden. The characteristic genera 

 Porambonites, Amphion, Echiriosphcera, and Glyplocystis are common 

 to the Tramore Limestone, the OrMoceros-limestone, and the 

 corresponding EchinosjDherite Limestone and ' Vaginatenkalk ' of 

 Russia, while there is also a likeness in the abundance of 

 Pteri/gometopus in Russia and Waterford. A list of common and 

 allied or representative species is given in the paper. Stage 1 of 

 the Tramore Limestone may include beds as low as or lower than 



