1857.] Annual Meeting. 421 



ing agent must have been at work over large areas of Europe 

 during the deposition of the Rothliegendes of the Permian period ; 

 and if we admit this kind of evidence for the Pleistocene drift, it is 

 contended that the same kind of evidence of transportation from a 

 distance, size, angularity, smoothing and scratched surfaces, should 

 be admitted with regard to the stones and boulders of the Permian 

 breccias.* 



Proofs were also adduced to show that the internal heat of the 

 earth has exerted no important climatal influence during any of the 

 geological periods from Silurian times downwards ; and a diagram 

 exhibited illustrative of the analogies shown by the small develop- 

 ment of molluscous life during the cold of the Permian and Plei- 

 stocene epochs, the last of which, as far as its fossil shells are 

 concerned, may be considered but as a subdivision of the recent 

 period.f 



[A. C. R.] 



ANNUAL MEETING, 



Friday, May 1. 



William Pole, Esq. M.A. F.R.S. Treasurer and Vice-President, 

 in the Chair. 



The Annual Report of the Committee of Visitors was read and 

 adopted. 



A List of Books Presented accompanies the Report, amounting 

 in number to 312 volumes, and making a total, with those purchased 

 by the Managers and Patrons, of 1186 volumes (including Periodi- 

 cals) added to the Library in the year. 



Thanks were voted to the President, Treasurer, and Secretary, 

 to the Committees of Managers and Visitors, and to Professor 

 Faraday, for their services to the Institution during the past year. 



* The Rothliegendes of Thuringia, in general appearance, closely resemble 

 the Permian brecciated rocks of the Gent Hills (for example), and many of 

 the blocks of granite in the Thuringiun rocks have been derived from parent 

 rocks, unknown in the neighbourhood where these conglomerates lie. 



t This subject has, in some of its details, been treated more fully in the 

 Geological Journal 1855, page 185. 



