422 TRANSACTION'S OF SOCIETIES. 



INTERNATIONAL CONGRESS OF ALIMENTARY 

 HYGIENE. — The second International Congress of Alimen- 

 tary Hygiene and of the rational feeding of man is to be held, 

 under the patronage of the Belgian Government, in Brussels, 

 from the 4th to the 8th of October next. The Congress will 

 be subdivided into seven sections, which will deal with the 

 following subjects respectively : (i) Bio-physics and Ener- 

 getics; (2) Plry'siology and Physiological Chemistry, Rational 

 Diet and Nutrition; (2a) The food of the soldier; (3) Hygiene, 

 Bacteriology, Parasitology, and Auto-intoxication; (4) The 

 composition, analysis, and adulterations of foods; (4a) Milk 

 products; (5) Drinking waters; (6) Legislation, repression of 

 fraud, control of food supplies, statistics; (7) The popular 

 teaching of rational feeding, Co-operative Societies, Food Ad- 

 ministration, the Food of Charitable Institutions. Any who 

 mav be desirous of joining the Congress or of contributing 

 papers, should communicate with the Secretary of the British 

 Committee, Mr. C. H. Cribb, B.Sc, F.I.C.. 136, Shaftesbury 

 Avenue, London, W. 



TRANSACTIONS OF SOCIETIES. 



Chemical, Metallurgical and Mining Society of South Africa. — 

 Saturday, May 21st : A. McArthur Johnston, M.A., M.I.M.M., F.C.S., Presi- 

 dent, in the chair. — " Grading Analyses and their application " : H. 

 Stadler- Full details were given of a method proposed by the author 

 of substituting ideal grades for the scheme of standard laboratory screens 

 adopted by the Institution of Mining and Metallurgy as a necessary sequel 

 to the tendenc}' towards fine grinding in metallurgical practice. — " Experi- 

 ments on the precipitation of gold from cyanide solution by carbon in lime " : 

 E. H. Croghan. The author described experiments carried out by him 

 with a view to determining what percentage of carbon may be present in 

 lime without causing precipitation of gold in the vats during cyanide treat- 

 ment. He came to the conclusion that limes containing less than .02% of 

 carbon could be considered excellent, .02 to .04% satisfactory, .06 to .1% 

 acceptable, .2% doubtful, while .3% or over should be a sufficient basis for 

 rejection. 



ADDRESSES WANTED. 



The Assistant General Secretary (P.O. Box 1497, Cape Town) would be 

 glad to receive the correct addresses of the following members, whose last 

 known addresses are given below : — 



Bell, W. Reid, M.I.C.E., F.R.Met.Soc, M.I.E.S., P.O. Box 2263, Johanne 

 burg. ► 



Boulton, H. C, c/o Messrs. PauHng & Co., Ltd., Broken Hill, Rhodesia. 



Bromley, Robert, A.M.I.C.E., Public Works Department, Worcester, C.C. 



Champion, Ivor Edward, P.O. Roberts Heights, Pretoria. 



Christie, James John. Kimberley. 



Court, S. E., High Commissioner's Office, Johannesburg. 



Dickie, A., 475, Currie Road, Durban, Natal. 



Durham, James, P.O. Box 2734, Johannesburg. 



Hannon, P. J., Superintendent Agricultural Co-operation, Cape Town. 



Hutt. Ernest W.. P.O. Box 2862. Johannesburg. 



Neilson, A. M., P.O. Box 615, Durban. 



Nichol, Thomas Thompson. P.O. Box 34, Springs, Transvaal. 



Southwell, Miss Jessie, 270, Visagie St., Pretoria. 



