392 



was tlie result of cliemical action, and was due to an alkaline 

 silicate that sometimes formed on the surface of rocks in 

 saline situations both near the sea coast and in Central Aus- 

 tralia. He also showed a skull from Molokolo, New Hebrides, 

 flattened by bandaging in infancy, -and now painted in 

 imitation of the living features; also types of "Rome Beauty'* 

 apples, showing great variation in size and colouration. Mr. 

 A. M. Lea exhibited some scale insects, one of which had 

 proved very troublesome in New Zealand, where it had been 

 introduced from Australia ; also a beetle that causes spherical 

 galls on the native plant Hihhertia; also, on behalf of Captain 

 S. A. White, coloured plates by Neville Cayley for a new 

 book on Australian birds, by A. S. Le Souef, including one 

 of eggs, by a new process which produces a stereoscopic effect. 

 Mr. F. R. ZiETZ showed feathered chaplet and wand from 

 Point McLeay, used by medicine men in localizing foreign 

 bodies introduced by magic. The doctor was called "mum- 

 kumbulie," the cliaplet "kardukie" (meaning Vlight"), and 

 the wand ''pinnowrie." Mr. A. G. Edquist showed gold- 

 bearing laterite from sandstone, Western Australia. Mr. W. 

 J. KiMBER showed a board riddled by Teredo. 



Ordinary Meeting, August 12, 1920. 



The President (Sir Joseph C. Verco, M.D., F.E.C.S.) 

 in the chair. 



Election. — A. A. Simpson, C.M.G., was elected a 

 Fellow. 



Papers. — ''An Adventitious Occurrence of Nautilus 

 pompilius, Linn., with a short Bibliography of Ocean Currents 

 affecting the Australian Coast," by Arthur R. Riddle; 

 "Revisional Notes on the Family Cistelidae (Order Coleop- 

 tera),'' by H. J. Carter, B.A. 



Exhibits. — Mr. A. R. Riddle exhibited electric lamps 

 known as "Daylight Light," and demonstrated their 

 superiority in showing the true colours of birds, minerals, 

 and shells with comparatively small consumption of current. 

 Captain S. A. White showed Australian rifle bird (Craspedo- 

 phora alherti) from Cape York, Queensland; also male and 

 female freckled duck ( Strictonetta naevosa). Mr. L. K. 

 Ward exhibited specimens of minerals. Mr. A. M. Lea 

 showed a drawer of butterflies (Huphina perimale),^ showing 

 how month by month their colours alter until their winter 

 and summer colourations are strikingly distinct. Dr. Angas 

 Johnson showed apples and oranges preserved from decay, 

 for lengthened periods, by a coating of gum varnish; also 

 specimen of Ankylostoma duodenale, the cause of the hook- 

 worm disease. Mr. F. R. Zietz exhibited the hind foot of a 



