Geological Society of London. 189 



the late Assistant-Secretary Mr. W. S. Dallas, M. Edmond Hebert 

 and M. Alphonse Favre (Foreign Members, both elected in 1874), 

 Mr. Wra. Davies, Mr. Kobert Wm. Mylne, Mr. Samuel Beckles, Dr. 

 H. B. Brady, Mr. Samuel Adarason, and Prof. Antonio Stoppani 

 (Foreign Correspondent, elected in 1889). 



He then dealt with the history of volcanic action in Britain during 

 the earlier ages of geological time. He proposed to confine the 

 term " Archaean " to the most ancient gneisses and their accompani- 

 ments, and showed that these rocks, so far as we know them in this 

 country, are essentially of eruptive origin, though no trace has yet 

 been found of the original discharge of any portion of them at the 

 surface. Passing to the younger crystalline schists, which he classes 

 under the term " Dalradian," he pointed to the evidence of included 

 volcanic products in them throughout the Central Highlands of 

 Scotland and the North of Ireland. The Uriconian series of Dr. 

 Callaway he regarded as a volcanic group, probably much oldef 

 than the recognized fossiliferous Cambrian rocks of this country. 

 The Cambrian system he showed to be eminently marked by con- 

 temporaneous volcanic materials, and he discussed at some length 

 the so-called. pre-Cambrian rocks of North Wales. He reviewed 

 the successive phases of eraptivity during the Arenig and Bala 

 periods, and described the extraordinary group of volcanoes in 

 Northern Anglesey during the latter time. The volcanoes of the 

 Lake District were next treated of, and reference was made of the 

 recent discovery by the Geological Survey that an important volcanic 

 group underlies most of the visible Lower- Silurian rocks in the 

 South of Scotland. The last portion of the Address was devoted to 

 an account of the volcanoes of Silurian time in Ireland, and it was 

 shown that during the Bala period a chain of submarine volcanic 

 vents existed along the east of Ireland from County Down to beyond 

 the shores of Waterford ; while in Upper-Silurian time there were 

 at least two active centres of eruption in the extreme west of Kerry 

 and in Mayo. 



The Ballot for the Council and Officers was taken, and the following were duly 

 elected for the ensuing year : — Council: Prof. J. F. Blake, M.A. ; "W. T. Blanford, 

 LL D., F.R.S. ; Prof. T. G. Bonney, D.Sc, LL.D., F.R.S. ; James Carter, Esq. ; 

 James W. Davis, Esq., F.L.S., F.S.A. ; John Evans, D.C.L., LL.D., F.R.S.; 

 L. Fletcher, Esq., M.A., F.R.S.; C. Le Neve Foster, D.Sc, B.A. ; A. Geikie, 

 LL.D., F.R.S.; A. Harker, Esq., M.A. ; J. C. Hawkshaw, Esq., M.A. ; H. 

 Hicks, M.D., F.R.S. ; G. J. Hinde, Ph.D. ; W. H. Hudleston, Esq., M.A., F.R.S.; 

 Prof. T. McKenny Hughes, M.A., F.R.S. ; J. W. Hulke, Esq., F.R.S.; J. E. 

 Marr, Esq., M.A. ; H. W. Monckton, Esq. ; F. W. Rudler, Esq. ; J. J. H. Teall, 

 Esq., M.A., F.R.S. ; W. Topley, Esq., F.R.S ; Prof. T. Wiltshire, M.A., F.L.S. ; 

 H. Woodward, LL.D., F.R.S. 



Officers. — Tresiclent: A. Geikie, LL.D., F.R.S. Vice-Presidents: W. T. 

 Blanford, LL.D., F.R.S. ; Professor T. G. Bonney, D.Sc, LL.D., F.R.S.; L. 

 Fletcher, Esq., M.A., F.R.S. ; W. H. Hudleston, Esq., M.A., F.R.S. Secretaries: 

 H. Hicks, M.D., F.R.S.; J. E. Marr, Esq., M.A. Foreign Secretary: J. W. 

 Hulke, Esq., F.R.S. Treasurer: Prof. T. Wiltshire, M.A.. F.L.S. 



