Notices of Memoirs — Papers read at British Association. 473 



helleflinta series at the base of the Huronian (the so-called porphy- 

 ries), and likewise the more ancient gneisses, are well represented. 

 He would, however, leave this subject to his friend, Dr. Henry 

 Hicks, who has so happily mastered the obscure problems of the pre- 

 Cambrian geology of Wales. The studies of Gastaldi and others 

 enable us to assert that similar series of ancient rocks occur in the 

 same order in the Alps ; and we infer that the chemical and physical 

 conditions which presided over the production of the crystalline 

 stratified rocks were world-wide. 



XI. — British Association for the Advancement of Science, 



Forty-eighth Meeting, Dublin, August 14th, 1878. 



A. — Titles of Papers Eead in Section C. (Geology). 



Fresident. — John Etans, D.C.L., F.E.S. 



The President's Address. (See p. 411.) 



Prof. E. Hull, F.B.S.— Sketch of the Geology of the Environs of 

 Dublin. (See p. 457.) 



J. Nolan, M.B.I.A. — On the Ancient Volcanic Districts of Slieve 

 Gullion. (See p. 445) 



W. Mattieu Williams, F.B.A.S., F.C.S. — Notes on the Glaciation of 

 Ireland and the Tradition of Lough Lurgan. 



W. H. Baily, M.B.I.A., F.G.S. — Notice of some additional Labyrin- 

 thodont Amphibia and Fish from the Coals of Jarrow Colliery, 

 near Castlecomer, Co. Kilkenny. 



W. Pengelly, F.R.S. — On the Exploration of Kent's Cave. Four- 

 teenth Report. 



B. H. Tiddeman, M.A., F.G.S. — Sixth Eeport on the Victoria Cave, 

 Settle. 



Prof. Alexander Macalister, M.D. — Eeport on Fermanagh Caves. 



C. E, De Bance, F.G.S. — Fourth Eeport of Committee on Under- 

 ground Waters. (See p. 462.) 



W. Pengelly, F.B.S. — On the relative Ages of the Eaised Beaches 



and Submerged Forests of Torbay. 

 Isaac Boberts, F.G.!S. — Experiments on Filtration of Sea Water 



through Triassic Sandstone. 

 V. Ball, M.A. — On a new Geological Map of India. 

 Prof. W. C. Williamson, F.B.S. — On the Supposed Eadiolarians of 



the Coal-measures. (See p. 461.) 

 The President. — On some Fossils from the Northampton Sands. 

 W. H. Baily, F.G.S.— On some Irish Fossils. 

 J. Nolan, M.B.I.A. — On the Metamorphic and Intrusive Eocks of 



Tyrone. 

 T. Sterry Hunt, F.B.S. — On the Origin and Succession of the 



Crystalline Eocks. (See p. 466.) 

 H. Hicks, M.D. — On some new pre-Cambrian Areas in Wales. (See 



p. 460.) 

 W. Williams. — On the Cerviis megaceros. 

 W. A. Traill. — The Eocks of Ulster as a source of Water Supply. 



(See p. 463.) 



