X PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [vol. lxxix,. 



The List of Donations to the Library was read. 

 The following communications were read : — 



1. 'On Reptilian Remains from the Karroo Beds of East 

 Africa.' By Sidney Henry Haughton, B.A., D.Sc, F.G.S. (Read 

 by Dr. A. Smith- Woodward, F.R.S., Pres.L.S., F.G.S.) 



2. ' Glacial Succession in the Thames Catchment-Basin. ' By 

 the Rev. Charles Overy, M.A., F.Gr.S. 



Lantern-slides were exhibited in illustration of Dr. S. EL 

 Haughton's paper, and lantern-slides and Palaeolithic implements 

 in illustration of the Rev. Charles Overy's paper. 



February 7th, 1923. 



Prof. A. C. Seward, Sc.D., F.R.S., President, 

 in the Chair. 



John Edward Alfred Whealler, B.A., 34 The Waldrons, Croydon 

 (Surrey) ; and Eric Stewart Willbourn, B.A., Assistant Geologist 

 to the Federated Malay States, Batu Gajah (F.M.S.), were elected 

 Fellows of the Society. 



The List of Donations to the Library was read. 



Mr. G.Vibert Douglas then proceeded to deliver a lecture on the 

 Geological Results of the Shackleton - Rowett (Quest) 

 Expedition. The Lecturer said that St. Vincent and St. Paul's 

 Rocks were examined on the way out, but the more detailed work 

 commenced in South Georgia. This island lies 900 miles east of 

 Cape Horn, and is 100 miles long by 20 miles in width. Its 

 topographical features are those of an upland dissected by glacial 

 action. The glaciers in general show signs of withdrawal. 

 Geologically, the island is composed of sedimentary rocks and, at 

 the south-eastern end, igneous rocks. These have been classified 

 by Mr. G. W. Tyrrell as follows : 



Sedimentary Rocks... (1) Mudstones. shale, slate, phyllite. 



(2) Quartzite, greywacke. 



(3) Calcareous rocks. 



(4) Tufaceous rocks. 

 Igneous Rocks (1) Gabbros and peridotite. 



(2) Dioritic and granitic rocks. 



(3) Dolerites and basalts. 



(4) Spilitic lavas and epidosites. 



The question as to whether the sediments represent one con- 

 tinuous period of deposition is open to dispute. The Lecturer 

 thought that there were two distinct periods, divided by an 



