116 



read in abstract form by Professor Tate, in the absence of the 

 author, on " The Geology of the Neighbourhood of Gawler." 



Some " Notes relating to the Geology between Burra and 

 Pariiia" were also given, having reference chiefly to the water- 

 bearing properties of the rocks at Farina, Kedhill, Blackrock 

 Plains, and Tarcowie ; also to certain stratigraphical pheno- 

 mena at Farina, Beltana, and Burra. 



ORDi?fAET Meeting, September 5, 1882. 



His Honor Chief Justice Way, President, in the chair. 



Donations to the Library since last meeting were laid upon 

 the table. 



Messrs, R. A. AVhite, Superintendent of Signals, Railway 

 Department, and Leonard William Haacke, Ph.D., Curator of 

 the South Australian Museam, were elected as Fellows. 



Mr. Charles Todd exhibited Campbell's sunshine recorder, 

 "which has been used at the Observatory for some time. The 

 duration of the sunshine was, he need hardly point out, an im- 

 portant factor in climatology. The instrument was simple in 

 construction, but its records w^ere very valuable. It was one 

 of the many means by which philosophers made Nature record 

 her own operations. It consisted of a sphere of glass four 

 inches in diameter, and a card being introduced in the focus of 

 the parallel rays, the image of the sun falling upon the card 

 burnt its track upon the card, which was graduated. He ex- 

 plained, by means of the blackboard, the principle of the sun- 

 shine recorder. In answer to a remark of Professor Tate, Mr, 

 Todd said it would be a great advantage if a system could be 

 devised w^hereby not only the particular portion of the sky 

 overcast, but the density of the clouds themselves could be re- 

 corded. The effect of a dense cloud, of course, would have a 

 greater effect than a thin cirrhus cloud. 



Professor Tate drew attention to some mineral specimens 

 from Eudunda sent by Mr. E. Bayer. They consisted of carbo- 

 nate of iron aiid brown oxide of iron. There was nothing 

 particularly remarkable about the specimens. 



Baron Sir F. von Mueller's paper on a '"New Acanthaceous 

 Plant from Arnheim Land," was taken as read. 



Dr. James MA^-N, M.D., Medical Officer of the Destitute 

 Poor Department, read a paper entitled "Notes upon the Life 

 History of a Human Blood-worm." He gave a technical des- 

 cription of the worm, w^iich is known to science as the Filrwia 

 sanguinis Jiominis, and he related the result of his observations 

 in China, where the natives were infested by the worm. The 

 mature filaria was very thin, but measured two or three inches 

 long, had a distinct alimentary canal, and reproductive ap- 



