220 
ABSTRACT OF PROCEEDINGS 
OF, THE 
Royal Society of South Australia 
(Incorporated) 
For 1910-11. 
Orpinary Mretinc, Novemper 1, 1910. 
Mr. Mayo in the chair. 
Execrion.—Professor Bragg was elected an Honorary 
Fellow of the Society. 
Mr. Asusy drew attention to the recent destruction of 
kangaroos on Kangaroo Island and moved that a deputation 
of members of the Society wait on the Commissioner of Crown 
Lands in connection with the matter. Resolved “That the 
President, Secretary, Mr. Ashby, and Mr. Howchin form the 
deputation, with power to add to their number.” ib 
Exuisirs.—Mr. Asupy exhibited birds from the Dande- 
nong Ranges, Victoria; Mr. Tepprr, insects; and Dr. Put- 
LEINE, trapdoor spiders from Burnett River, Queensland. 
Parrers.—‘On Tetrahedrite from Glen Osmond Quarry,” 
“Further Notes on Radio-Active Minerals from Olary,” “On 
Obsidianites,” and “Mineralogical Notes on Sphene, Pegma- 
tite, Cordierite, Sillimanite, Beryl, and Semi-artificial 
Gypsum Twin Crystals from a Steam-boiler at Block 14 Mine, 
Broken Hill, New South Wales,” by Douctas Mawson, D.Sc. 
Orpinary Meetine, Aprit 4, 1911. 
Tur Presipenr (J. C. Verco, M.D., F.R.C.S.) in the 
chair. 
Exuipits.—Mr. E. V. Ciarx, B.Sc., exhibited silicified 
wood from Scone, New South Wales, where it is abundantly 
scattered about the country. In the opinion of several Fellows 
the wood belonged to a species of pine allied to Araucaria, as 
the structure of the wood and annual rings were easily re- 
cognizable. Mr. CrarK also exhibited native sulphur from 
Mount Wingen, near Scone, where a gradually moving area 
of subterranean combustion is seen on the hillside, probably 
caused by combustion of the deposits of pyrites. Mr. How- 
cuin described the spontaneous combustion of pyrites which 
took place in the waste coal heaps in England. Dr. EH. A. 
.JouNsoN exhibited specimens of 7'richina spiralis in muscle. 
