Geological Socictj/. \ 609 



Langdale-Pikes, and the Lakes of Ulswater, &c., and consisting 

 of brecciated argillaceous rocks containing calcareous spar, 

 green-earth, and calcedony, with greenstone and other forms of 

 trap. On the south of this chain is a tract of transition lime- 

 stone, containing Cari/ophj/lli<£j Productce, Spir/fera^ and other 

 fossils ; and this is covered by a third zone of slate, the most 

 recent rock of the country, usually divisible into rhomboidal 

 blocks, of which two principal varieties are observable, alter- 

 nating with each other ; the one homogeneous and fissile, and 

 containing organic remains, sparingly distributed, of the genera 

 Trigonia, Pecten, Gryphea, Tu7'ritella, and Terebratula j — the 

 other more granular and micaceous. This formation is in some 

 cases succeeded by red conglomerate, but more commonly by 

 mountain-limestone, the lowest beds of which contain numerous 

 pebbles of slate and quartz ; and above the limestone are the 

 carboniferous rocks, including the millstone grit and the upper 

 coal-measures. The highest strata known in the country, con- 

 sist of the new red sandstone, placed in an unconformable posi- 

 tion above the coal formation. 



Jan. 18. — ^A notice was read On the Occurrence of ' Chloro- 

 phteite^ in Basaltic Dikes, in Northumberland ; and of Carbonate 

 of Strontian in the Lead Measures at Fallowfield, near Hexham; 

 by William Hutton, Esq. of Newcastle-upon-Tyne. 



The reading was begun of a paper. On the Geological Rela- 

 tions of the Secondary Strata in the Isle of Arran ; by the Rev. 

 A. Sedgwick, V.P.G.S., F.R.S., and Roderick Impey Murchi- 

 son, Esq., Sec. G.S., F.R.S., &c. 



Feb. 1. — The reading of Professor Sedgwick and Mr. Mur- 

 chison's paper, begun at the last meeting, was concluded. 



Feb. 15. — The Anniversary Meeting of the Society was held, 

 and the following Fellows were elected Officers and Council for 

 the year ensuing :—Py-es/(ieMK* William Henry Fitton, M.D. — ' 

 Vice-Presidents : Arthur Aikin, Esq., F.L.S. ; Rev. W. Buck- 

 land, D.D., F.R.S., Professor of Mineralogy and Geology in the 

 University of Oxford ; Charles Lyell, Esq., F.R.S. and L.S. ; 



Rev. A. Sedgwick, F.R.S., Woodwardian Prof. Camb. 



Secretaries : W. J. Broderip, Esq., F.R.S. & L.S. ; R. J. 



Vol. hi. 2 d 



