86 TRANSACTIONS OF SOCIETIES. 



practice " : A. R. Stacpoole. A description of various stamp mill 

 accessories illustrative of common battery practice on the Witwatersrand 

 mines. 



Saturday, October 15th: J. Moir, M.A., D.Sc, F.C.S., President, in the 

 chair. — " New method of lighting fuse " : E. M. Weston. A demonstration 

 of a convenient method of igniting fuses without the risk of inhaling poisonous 

 fumes. 



Geological Society of South Africa. — Monday, September 19th : Prof. 

 R. B. Young, B.Sc, F.R.S.E., F.G.S., President, in the chair.—" The Kheis 

 series " : Dr. A. W. Rogers. A discussion of the mutual relation of the 

 Marydale beds, Wilgenhout Drift beds and Kaaien quartzites and mica schists- 

 and of the correlation of the Kheis series. — " The replacement of quartz by 

 carbon in Rand Banket " : Prof. R. B. Young. The relation of carbon to 

 quartz in the matrix of the banket rock is such as to suggest partial replace- 

 ment of the quartz bj' carbon. Microscopic examination of the quartr 

 pebbles showed numerous carbon bodies embedded in the quartz, these bodies 

 possessing a botryoidal form and penetrating to the very centre of the pebble. 



South African Society of Civil Engineers. — Wednesday, October 12th : 

 H. H. Elliott, A.M.I.C.E., President, in the chair. — " Practical notes on 

 Tunnelling " : Prof. A. E. Snape. A description of the method of con- 

 struction, engineering details, surmounting of difficulties, and supervision 

 of two large contracts, amounting in value to nearly ^750,000 and consisting 

 mainly of two outfall sewers built, for the greater part, in tunnels. 



Royal Society of South Africa. — Wednesday, October 19th: S. S. 

 Hough, M.A., F.R.S , President, in the chair. — " An investigation into the- 

 land and sea breeze conditions at Port Elizabeth " : A. G. Howard. A 

 second contribution on the part of the author to South African meteorology. — 

 " Graphical representation of some of the simpler analytic functions of a 

 complex varialale " : E. T. Littlewood. The paper was illustrated by 

 means of models. Algebraic, exponential and logarithmic functions were- 

 illustrated by a wire frame work through which on the horizontal bases 

 families of curves illustrating the various arguments were visible. From these 

 certain general results were established. 



Cape Chemical Society. — Friday, December 2nd : Prof. P. D. Hahn, 

 M.A., Ph.D., President, in the chair. — " Note on the Analysis of some Cali- 

 fornian wines " : Prof. P. D. Hahn. The results were given of analyses of 

 a number of Californian wines which had recently been analysed by the author 

 after having been kept by him for over ten years. In two cases appreciable- 

 quantities of salicylic acid were found. — " Malt vinegar and Maize vinegar " : 

 Dr. C. F. Juritz. A record of analyses of about six dozen samples of malt 

 and other vinegars, including several recently imported, and a discussion of 

 the possibilit}' of applying analytical limits in the case of vinegars man- 

 ufactured from whole maize grain and from^maize grits or rice. 



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 Messrs. Pauling & Co., Ltd., Broken Hill, Rhodesia. 

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

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

 Mirrlees, W. J., 9, London Chambers, Durban. 

 Nichol, Thomas Thnmp'^nn, P.O. Box 34, Springs. Transvaal. 

 Nicholas, W. H., Durban High School, Durban, Natal. 

 Pakes, Dr. A. E. H.. P.O. Box 5, Belfast, Transvaal. 

 Preston, James, 89, Arnold Road, Observatory, near Cape Town, 

 outhwell, Miss Jessie, 270, \ isagie St., Pretoria. 



