239 



Exhibits. — Mr. W. Howchin, for Mr. C. E. Broughton, 

 exhibited specimens of turquoise discovered by Mr. Green- 

 Avood, jun., at Mount Painter, South Australia. Turquoise 

 is a hydrous phosphate of alumina. The determination was 

 made at the Technological College, Sydney. This is its first 

 recorded appearance in South Australia, and Mr. Howchin, 

 in view of the value of the mineral, recommended that the 

 locality be searched for better specimens. Mr. Dixon said 

 that he had found turquoise on the Murchison goldfield, 

 Western Australia. Mr. E. Ashby exhibited birds of the 

 Swift family, including Salangana esciilenta, from New 

 Guinea, which has also been recorded from South Australia, 

 and which constructs the so-called edible birds' nests ; the 

 Australian spine-tailed swift (Chcetura caud acuta) ; and the 

 Javanese swallow (Iiirundo javanica), also recorded from 

 Australia. The President exhibited a series of eight per- 

 fect adult specimens of "Scaphella roadnightice." This re- 

 markable mollusc was first obtained on the Ninety-mile 

 Beach, Victoria, by Baron von Mueller, who discovered the 

 first specimen propping up a hotel window, and gave it to 

 Mr. McCoy, who described it in 1881. None had been 

 obtained alive until two were taken by the "Endeavour" off 

 Eucla in 100 fathoms. This shell varies extremely in size, the 

 micromorphs and macromorphs being respectively smaller and 

 larger than the type. The apex or protoconch is always pre- 

 sent and exceedingly adherent, while in many other species 

 of Voluta it is invariably absent in adult specimens. 



Papers. — "The Ionization produced by the Impact of 

 Solid Bodies in Air," by Professor Kerr Grant, M.Sc. He 

 described the experiments carried out by himself and Mr. G. 

 E. M. Jauncey, B.Sc. "The occurrence of an Outlier of 

 Lower Cainozoic Rocks, in the River Light, near Mallala," 

 by Walter Howchin, F.G.S. 



Ordinary Meeting, May 9, 1912. 



The President (J. C. Verco, M.D., F.R.C.S.) in the 

 chair. 



Elections. — F. R. Zietz, ornithologist, South Aus- 

 tralian Museum; L. K. Ward, B.A., B.E., Government 

 Geologist, Adelaide; and R. L. Jack, B.E., Assistant Gov- 

 ernment Geologist, Adelaide, were elected Fellows. 



Nominations.- J. G. O. Tepper, F.L.S., Norwood, as 

 an Honorary Member, and A. C. Broughton, undergraduate, 

 Adelaide University, as a Fellow. 



Exhibits. — Mr. W. Howchin exhibited a fine example 

 of geological ripple marks on a face of Lower Cambrian 



