454 TRAXSACTIOXS OF SOCIETIES. 



TRANSACTIONS OF SOCIETIES. 



Chemical, Metallurgical and Mining Society of South Africa. — 

 Saturday, June i8th : A. McArthur Johnston, M.A., M.I.M.M., F.C.S., 

 President, in the chair. — " Sand-fiUing on the Witwatersrand " : E. Pam- 

 An account of a system of fiUing up worked out areas on mines by means 

 of sand, water being used as a carrying and depositing medium. The system 

 recommended is specially modified to suit local conditions. — " The destruction 

 of Cyanide" : Dr. J. Moir and J. Gray. The authors described certain 

 experiments carried out bearing on the destruction of cyanide for stope 

 filling purposes, and dealing with the effects of temperature, the functions 

 and effects of alkali, and of cyanide-iron ratio under different aspects. 



South African Society of Civil Engineers. — Wednesday, July 13th: 

 J. McKenzie, A.M.I.C.E., in the chair. — " Speed of trains on railways of 

 3 ft. 6 in. gauge": J. D. Shannon- Wednesday, August loth : F. E. 

 Kanthack, A.M.I. C.E., in the Chair. — '-Water supply scheme, Waterkloof 

 Township, Pretoria": R. H. Charters. 



Royal Society of South Africa. — Wednesday, July 20th : S. S. Hough, 

 M.A., F.R.S., President, in the chair. — " Factorisable continuants": Dr. 

 T. Muir. A claim for priority in respect of a theorem published as new 

 by Metzler in the Brit. Assoc. Report, 1909, p. 390 ; the author having 

 published the identical theorem in the Transactions of the S.A. Philoso- 

 phical Society over six years ago. — " Effect of Electric discharge on Water 

 Vapour " : E. Jacot- The author's results did not confirm those announced 

 by Henry in the Joitynal de Physique with regard to the production of cathode 

 rays. The electric discharge resulted in reduction of water vapour, which, 

 in tubes with metallic electrodes, proceeded independently of the discharge. — 

 " Note on Verneuk Pan" : Dr. A. W. Rogers- A description of a pan' 

 100 square miles in area, typical of the pans on the Dwyka formation in 

 the north of the Cape Province. — " Note on diurnal variation at Kimberley " : 

 Dr. J. R. Sutton- A photo-electric origin is suggested for the diurnal 

 oscillation of level. — ''Relics of Cave Dwellers": Dr. L. Peringuey. 

 An account was given of recent finds in rock-shelters once occupied by 

 Hottentots, and illustrative specimens were exhibited. 



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, Johannes- 

 burg. 



Boulton, H. C, c/o Alessrs. Pauling & 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., 47;, 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. 



