ABSTRACT OF PROCEEDINGS. XXIX. 



Appollyon Valley, Broken Hill; asbestos, north-west of 

 Western Australia. 



paper : 

 Dr. A. B. Walkom gave an interesting and instructive 

 account of his researches during the past six years on the 

 Mesozoic Floras of Queensland. The fossil plants were 

 dealt witli mainly as regards their bearing on the solution 

 of stratigraphical problems, and it was pointed out that at 

 least five floras of Mesozoic age are represented amongst 

 Queensland fossil plants. A discussion followed. 



Monthly Meeting 10th September, 1919. 

 Professor David in the Chair. 

 Nine members and four visitors were present. 

 exhibits: 



1. Mr. R. H. Cambage: — Limestone (travertine) from 

 Stone Quarry Creek, near Picton. This limestone, which 

 comes from the Wianamatta shale, was used for burning 

 60 or more years ago. 



2. Mr. C. E. Tilley: — Photographs of contorted gneiss 

 from the Pre-Cambrian of Yorke Peninsula, S. Australia. 



3. Mr. L. A. Cotton: — Seismograph record of the recent 

 earthquake obtained at Sydney Observatory. The record 

 indicates a distance of the order of 30 miles. 



4. Mr. L. F. Harper : — Rocks and ores from the Ardlethan 

 tinfield, illustrating the origin and mode of occurrence of 

 tin ore on the field. 



5. Mr. \V. R. Browne: — Rocks from Encounter Bay, S. 

 Australia, in illustration of his paper. 



6. Mining Museum: — Native bismuth, Ardlethan; graphic 

 and terminated tourmaline, Broken Hill; watercress con- 

 verted into travertine, Yass; chrysolite asbestos, Nullagine 

 W. Australia; anthophyllite asbestos, Moora, W. Australia. 



