562 Notices of Memoirs — Liverpool Geological Society. 



known and invaluable researches in British granites, shewed that 

 the granite of Leinster contains more soda than will satisfy the con- 

 dition of its having orthoclase as its only feldspar ; and in a recent 

 communication to the Eoyal Society of London, he stated (I quote 

 from memory) that though Albite had never yet been detected in 

 the Leinster granite, its existence could be inferred with considerable 

 probability. 



At any time the discovery of this mineral would be of considerable 

 interest, but it is particularly so just now, as it proves the soundness 

 of the conjecture of Professor Haughton, who has done more than 

 any living geologist towards solving the great problem of the origin 

 of granite. 



I. — Abstract of the Proceedings of the Liverpool G-eglggioal 



Society. Session the Tenth, 1868-69. 



IN his anniversary address, read before the Liverpool Geological 

 Society on the 13th October, 1868, Mr, E. A. Eskrigge, F.G.S., 

 the retiring President, made a few remarks on the work done by the 

 Society during the past session. They were then entering upon the 

 tenth session, and the number of members, which at first was six, 

 had increased to fifty-six. Still, within the last four years there had 

 been no advance, the withdrawals having slightly exceeded the 

 number of new members. Mr. Eskrigge, however, was inclined to 

 regard the numerical position of the Society as satisfactory, consider- 

 ing the comparatively small attraction presented by the geological 

 features of their immediate neighbourhood. But there was cause for 

 regret and disappointment in noticing how few members took an 

 active pai't in their Transactions. A meeting of the British Asso- 

 ciation in Liverpool was anticipated within two or three years, and 

 the President therefore urged them to greater activity, saying that, 

 as on such an occasion prominence would probably be given to 

 the peculiar features of local geology, it behoved the Society to be in 

 readiness for the work which then would fairly devolve upon them.^ 



The volume of Proceedings now before us contains some notes by 

 Dr. C. Eicketts, F.G.S. , on the Silurian and Carboniferous rocks in 

 the neighbourhood of Ingleborough. The latter strata repose, ex- 

 cept where faulted, in a strictly horizontal position on the highly in- 

 clined and contorted Silurian rocks. In the dales, the Carboniferous 

 rocks have been cut through by the action of subaerial denudation, 

 which has exposed and also deeply eroded the older rocks beneath.* 



Mr. Charles Potter records some observations on the Cheshire 

 Coast. He describes a section of Peat and Silt beds resting on 

 Boulder-clay. 



Mr. Eobert Bostock contributes a paper on the New Eed Sand- 



1 The meeting of the British Association in 1870 will be held in Liyerpnol. 

 * For a detailed descripiion of the Silurian rocks reference is made to a paper by 

 Mr. T. McKenay Hughes in the Geological Magazine for 1867, p. 346. 



