XXX. ABSTRACT OF PROCEEDINGS. 



logical and tectonic features of the Collie Coalfield ; brief 

 reference was also made to the coal measures of the Irwin 

 River district. 



Discussion of the address was postponed to a special 

 meeting. 



Special Meeting, 21st July, 1920. 



Professor David in the Chair. 



Ten members and one visitor were present. 



The business of the meeting was the postponed discussion 

 of Dr. Woolnough's paper on the West Australian Coal 

 Fields. Dr. Woolnough exhibited a revised section across 

 the Irwin River area, and gave a vertical section of the 

 stratigraphical succession. His remarks were illustrated 

 by a fine suite of rock specimens and fossils, 



A discussion followed in which most of those present 

 participated. 



Monthly Meeting, 11th August, 1920. 



Professor David in the Chair. 

 Eight members and eight visitors were present. 

 exhibits : 



1. By Mr. Watkin Brown: — A collection of minerals 

 from the Royal Ontario Museum, including fine specimens 

 of sodalite, pink vesuvianite, oligoclase, pyroxene (crystal 

 6£ inches long), pseudo-hexagonal phlogopite, smaltite and 

 associated minerals, argentite, allemontite, skutterudite, 

 breithauptite and spencerite. 



2. By Mr. L. L. Waterhouse for Mr. A. Combe : — A series 

 of photographs of the Grampian Mountains, Victoria, illus- 

 trating various geological structures. 



