214 TRANSACTIONS OF SOCIETIES. 



Saturday, January 15th: Mr. C. B. Saner, M.I.M.M., A.I.M.E., Vice- 

 President, in the chair. — " Notes on the precipitating effects of substances 

 containing various forms of Carbon and Cellulose on cyanide solutions con- 

 taining gold and silver " : A. J. ClarK and W. J. Shar'wood. The 

 results of a series of experiments and observations made by the authors at 

 the Homestake Mine, South Dakota, U.S.A., together with other information 

 on the subject gathered from various sources, and a summary of the literature 

 bearing on charcoal precipitation, as well as a list of patents granted to date 

 protecting the various uses of charcoal as a precipitant. 



NEW BOOKS. 



Report of a Magnetic Survey of South Africa. Prof. J. C. Beattie, 

 pp. X. -I- 235. Cambridge: University Press. 1909. Price, 21s. An 

 account, published for the Royal Society, of the magnetic survey carried 

 out by the author, aided by grants from the Royal Society, the British 

 Association for the Advancement of Science, and Governments of South 

 African Colonies. The observations embrace a period of some eight 

 years, and were made at about 400 stations. The area covered includes 

 ou hly British South Africa from the Ngami region southwards. The 

 appendices, containing, inter alia, the detailed station observations, 

 occupy the larger portion of the book, and the entire work is the record 

 of a particularly arduous investigation. 



List of Official Chemical Appointments. R. B. Pilcher. 3rd ed. revised 

 and enlarged, pp. 234. London : Institute of Chemistry of Great Britain 

 and Ireland, 19 10. Price 2s. 3d. post free. This consists of three main 

 divisions, viz.: — (i) Appointments in Great Britain and Ireland under 

 various State Departments, County and Borough Councils and other 

 authorities, and the professorial and teaching appointments in Univer- 

 sities, Colleges, Technological Institutions, Medical, Agricultural and 

 Veterinary Colleges, and in Public and Secondary Schools ; (2) pro- 

 fessional and teaching appointments in Government Departments 

 Colleges and Schools in various British Colonies and Protectorates 

 including the Cape Colony, Transvaal, Orange River Colony, Natal, and 

 Rhodesia; (3) concise information regarding - British Societies and 

 Institutions for the Advancement of Chemical Science, and of profes- 

 sional chemical interests. In addition to strictly chemical appointments, 

 those in connection with Agriculture, Metallurgy, Assaying, Mineralogy 

 and Geology and other branches of work wherein chemical knowledge 

 is useful, have been included so as to render the information as compre' 

 hensive as 'possible. 



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 : — 



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



Brooks, Edwin James Dewdney, C.E., Public Works Department, Umtata. 



Brown, Walter Bruce, District Engineer, Cape Government Railways, 

 Cradock, C.C. 



Campbell, Allan McDowell McLeod, C.E., B.A., F.I.Inst., Cape Govern- 

 ment Railwaj's, Aliwal North, C.C. 



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



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



Gillispie, John, Railway Survey Camp, George, C.C. 



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



Nichol, William, Superintendent of Mines, De Beers Consd. Mines, Ltd., 

 Kimberley, C.C. 



Phillips. Geoffrey John, .Vcting District Engineer, De Aar, C.C. 



Skeels, Brebner School, Bloemfontein, O.R.C. 



Turner, George Albert, M.B., Ch.B., D.P.H., Parktown West, Johannesburg. 



Wilson, Allen, ^y and 38, Steytler's Buildings, Johannesburg. 



