ABSTRACT OF THE PROCEEDINGS 



GEOLOGICAL SECTION 



Monthly Meeting, 16th March, 1921. 



Professor Sir Edgeworth David in the Chair. 



Thirteen members and four visitors were present. 



Professor David and Mr. W. R. Browne were re-elected 

 Chairman and Honorary Secretary respectively. 



exhibits: 



1. By Mr. W. S. Dun: — Fossil sponges from the Upper 

 Marine Permo-Oarboniferous of Ulladulla. 



2. By Mr. Simpson : — Post-Tertiary fossils from Pepper- 

 mint Grove, Swan River, W.A., occurring about 15 feet 

 above present sea-level, also Corals (Prionastrcea virens) 

 collected in situ at Busselton, 150 miles south of Perth, 

 at 15 feet above sea-level. 



discussion : 

 A discussion on " The nature and chronology of the post- 

 Tertiary movements of the strand-line in Australia" was 

 opened by Prof. L. A. Cotton, who gave details of an inves- 

 tigation into the chronology of the apparent uplifts and 

 subsidences along the coast of New South Wales. 



The Chairman dealt with strand-line movements gener- 

 ally, with special reference to Daly's theory of glacial 

 control. 



The discussion was continued by Messrs. Sussmilch, Poole 

 and Halligan, and was eventually adjourned till the next 

 monthly meeting. 



