PEOCEEDINGS 



OF THE 



GEOLOGICAL SOCIETY OF LONDON. 



SESSION 1874-75. 



November 4, 1874. 



John Evans, Esq., Y.P.R.S., President, in the Chair. 



Henry Michell Whitley, Civil Engineer, Assoc.Inst.C.E., Secre- 

 tary for London of the Royal Institution of Cornwall, 4 Great 

 Queen Street, "Westminster, and Horatio Brothers, Esq., M.Inst. 

 C.E., Engineer to the Western Division of the Chartered Gas-light 

 and Coke Company, 1 Bessborough Street, S.W., were elected Eellows 

 of the Society. 



The List of Donations to the Library was read. 



Specimens of Livingstonite, a new mineral (sulphide of antimony 

 and mercury) from Huitzuco, Mexico ; presented by its describer, 

 Don Mariano Earcena. 



Specimens of Bauxite from Les Baux, Bouches du Rhone ; pre- 

 sented by John Evans, Esq., V.P.R.S., Pres. G.S. 



The following communication was read':— 



" JNotes on the Comparative Microscopic Rock-structure of some 

 Ancient and Modern Yolcanic Rocks." By J. Clifton Ward, Esq., 

 E.G.S. 



November 18, 1874. 



John Evans, Esq., V.P.R.S., President, in the Chair. 



George Harry Piper, Esq., Solicitor, of Court House, Ledbury ; 

 John Peter, Esq., of Ivy House, Bala ; and C. J. Homer, Esq., of 

 Chatterley Hall, Tunstall, were elected Eellows of the Society. 



The List of Donations to the Library was read. 



The following communications were read : — 



1. "On Eossil Evidences of a Sirenian Mammal (Eotherium cegyp- 

 tiacum, Ow.) from the Nummulitic Eocene of the Mokattam Cliffs, 

 near Cairo." By Prof. Owen, F.R.S., E.G.S., &c. 



2. " On the Geology of North-west Lincolnshire." By the Rev. 

 J. E. Cross, M.A., E.G.S. 



