ABSTRACT OF PROCEEDINGS. lv. 



ADDRESS : 



Dr. S. S. Visher, Professor of Geography in the University 

 of Indiana, U.S.A., gave an address on the hurricanes of 

 the Pacific, with special reference to the possibility of their 

 throwing light on the problem of the migration of life in 

 the Pacific. 



The address was discussed by Mr. Hedley, Prof. Wood 

 Jones of Adelaide, and Mr. Halligan. 



Mr. Milson gave a short account of recent views as to 

 the origin of petroleum. 



Monthly Meeting, 19th December, 1921. 

 Mr. E. C. Andrews in the Chair. 

 Eleven members and one visitor were present. 



exhibits : 



1. From the Mining Museum: Avery comprehensive 

 and interesting suite of specimens from South Africa, illus- 

 trating the occurrence of corundum in the rock Plumasite. 



2. By Mr. L. F. Harper: Magnesite nodules occurring in 

 association with a coal seam at Ravensworth Colliery. 



3. From the Australian Museum: (a) Obsidianites from 

 Ooldea, South Australia ; (b) Tourmaline from 15 miles 

 S.W. of Uralla, showing cross fracture and re-cementation; 

 (c) Nephrite from Baryulgil, N.S.W. 



4. By Prof. Cotton: Small button-shaped masses, ranging 

 from the size of a pea to that of a large marble and probably 

 representing the result of pressure, from the Wianamatta 

 Shale at St. Peters. 



5. By Mr. Dun: Corals from the Cretaceous beds of 

 Ooldea, collected by Messrs. Trouton and Wright, Austra- 

 lian Museum. These are the first solitary corals found 

 in that region, and they represent forms intermediate 

 between rugose corals and the Hexacoralla. 



