﻿XC PROCEEDINGS OE THE GEOLOGICAL SOCIETY. [May I905, 



In addition to the lantern-slides described on pp. lxxxviii & 

 lxxxix, the following specimens and maps were exhibited : — 



Specimens and casts of Silurian Gasteropoda, exhibited in illus- 

 tration of the papers by Miss Jane Donald. 



'Blue Ground ' from the Premier Mine near Pretoria and from 

 the Lace Mine (Orange-River Colony) ; also photographs and plans of 

 the Cullinan Diamond, actual size, exhibited by Dr. F. H. Hatch, 

 M.Inst.C.E., F.G.S. 



Geological-Survey 6-inch Maps of part of Skye, and Sheet 70 of 

 the Geological-Survey 1-inch Map of Scotland, exhibited by the 

 Director of H.M. Geological Survey ; also Sheet 327, Bournemouth, 

 and Sheet 343, Swanage, printed in colours, of the 1-inch Geological- 

 Survey Map of England, presented by the Director of H.M. Geo- 

 logical Survey. 



Geological-Survey Map of Norway, Sheet 23 A, Voss-Christiania, 

 1905, presented by the Director of that Survey. 



March 22nd, 1905. 

 J. E. Maer, Sc.D., F.R.S., President, in the Chair. 



George B. Pritchard, Lecturer on Geology, School-of-Mines 

 Department, Working-Mens' College, Melbourne (Victoria) ; T. 

 Ernest Robertson, Professor of Mining, Transvaal Technical 

 Institute, Johannesburg (Transvaal) ; and Emil Percy Turner, 

 Mining Engineer, Ashwood, Longton (Staffordshire), were elected 

 Fellows of the Society. 



The List of Donations to the Library was read. 



The following communications were read : — 



1. ' An Experiment in Mountain-Building : Part II.' By the 

 Right Hon. the Lord Avebury, P.C., F.R.S., P.S.A., For.Sec.R.A., 

 F.G.S. 



2. ' The Rhastic Rocks of Monmouthshire.' By Linsdall 

 Richardson, F.G.S. 



The following specimens were exhibited : — 



Models made during Experiments in Mountain-Building, ex- 

 hibited by the Right Hon. the Lord Avebury, P.O., F.R.S., P.S.A., 

 For.Sec.R.A., F.G.S., in illustration of his paper. 



Specimens exhibited by Linsdall Richardson, F.G.S., in illus- 

 tration of his paper. 



