Geological Society. 147 



June 17- — On a new register-pyrometer for measuring the ex- 

 pansions of solids, and determining the higher degrees of tempera- 

 ture upon the common thermometric scale. By J. Frederick Daniell, 

 Esq. F.R.S. 



GEOLOGICAL SOCIETY. 



May 21. — Grenville Lonsdale, Esq., Ensign in the Third Foot, 

 was elected a Fellow of this Society. 



At this Meeting, Messrs. Sedgwick and Murchison's paper on the 

 Austrian Alps was read, which is published in our present Number. 



June 4. — Rev. Richard Dawes, M.A., Fellow and Tutor of Down- 

 ing College, Cambridge^ Rev. Charles Currie, M* A. Fellow of Pem- 

 broke College, Cambridge; Rev. Thomas Musgrave, M.A. Fellow 

 of Trinity College, Cambridge ; William Devonshire Saull, Esq. of 

 Aldersgate Street, London ; and Francis Ellis, Esq. of the Royal 

 Crescent, Bath, — were elected Fellows of this Society. 



A paper was read, entitled " On the Geological Relations of the 

 South of Ireland, by Thomas Weaver, Esq. F.G.S. F.R.S. M.RJ.A., 

 &c." _ 



This Memoir gives an outline of the mineral constitution of a 

 large tract in the south of Ireland, comprising the counties of Cork, 

 Kerry, and Clare, with part of those of Galway, Tipperary, and 

 Waterford ; and thus connecting this portion of the island with the 

 eastern part of it, formerly described by the author. 



This hilly and diversified region is chiefly composed of ridges, 

 having generally a direction from east to west, and attaining their 

 greatest elevation in the mountains of Kerry, where Gurrane Tual, 

 one of Magillycuddy's Reeks, near Killarney (the highest land in 

 Ireland), is 3410 feet above the sea. 



The rocks in this elevated country are chiefly of the transition 

 class : they decline gradually towards the north, and finally pass 

 under the old red sandstone and carboniferous limestone of the 

 midland counties. 



I. Transition Series. 



In Kerry there is a persistent series of transition rocks, having a 

 general direction from east to west, and dipping to the north and 

 south with vertical beds in the axes of the ridges : the strata as they 

 diminish in inclination on each side, form a succession of troughs. 

 The principal rock-masses are composed of grauwacke, slate, and 

 limestone ; but the general series is distinguished, by the author, 

 into simple and compound rocks ; the simple being clay-slate, 

 quartz-rock, hornstone, lydian-stone, and limestone. The com- 

 pound sandstone and conglomerates with bases of clay-slate, quartz, 

 and sandstone ; grauwacke, and grauwacke-slate ; sandstone and 

 sandstone-slate ; greenstone ; and hornstone-porphyry. Roofing- 

 slate, though comparatively rare, is found of an excellent quality in 

 the island of Valentia. 



Organic remains occur more frequently in the limestone of this 

 series than in the slate and grauwacke. In Kenmare these remains 

 consist of a few bivalves, and some crinoidal remains; and these also 



U 2 are 



