Il6 TRANSACTIONS OF SOCIETIKS. 



on to a rabbit in the nyniphal stage, lost their infcctivity in the adult 

 stage for susceptible cattle; U) clean or infective ticks feeding on an 

 animal that has recovered from East Coast fever do not transmit the 

 disease in their next stage; (5) all ticks, though reared and fed under 

 similar conditions, do not equally transmit the disease, a fact of which 

 explanation is difficult. 



Chemical, Metallurgical and Mining Society of South Africa. — 



Saturday, August 19th: W. R. Dowling, Vice-President, in the chair 



"Sinking dperations at the Norma shaft, Kattowitz, Upper Silesia": 

 B. C- GuUaohsen. A description of the methods adopted by the 

 Kattowitzer Aktiengesellschaft for overcoming the difficulties met with 

 in sinking a shaft at the Ferdinand Colliery workings through layers 

 of damp sand, quicksands, bands of clay, and soft sandstone- 



NEW BOOKS. 



Johnson, J P.— The Mi)icra! Industry of Rhoiicsia. 9 in. X 6 in., pp. 90, 

 1 plate, interleaveti. Longmans, Green & Co., 8s. 6d. 



Durand, Rt. Hon. Sir H. Mortimer.— .-i Holiday in South Africa- 

 unio., pp. xiv. _'75. London: William Blackwood & Sons, 

 191 1. 14 oz., 6s- 



Sohomburgk, Hans'. —l/'i'/i/ uiid Wilde iin Hcrzcn Afrikas: Zivolf 

 Jahr Jai^d- uiid Forschuugsrciscii- 8vo, pp. xvi, 372- Berlin: 

 Egon, Eleischel & Co. 1910. 36 o/.., 8 marks. 



Colville, Mrs. Arthur. — One Thousand Miles in a niachilla: travel and 

 sport in Xyasaland. Angoniland and Rhodesia; zvith some aecoujit 

 of the resources of these countries- - - . 9 in X 5^^ in-- pp- x, 

 312. Maps and illus. London, etc.: W- Scott Publishing Co-, 

 IDS. nett. 



ADDRESSES WANTED. 



The Assistant General Secretary (P-O- Box 1407- Cape To'vn) 

 would be glad to receive the correct addresses of the following members. 

 whose last-known addresses are given below: — 



Aspland, C- Hatton, Witwatersrand Deep. Ltd-, P-O- Box 5, Knight's, 



Transvaal. 

 Barton, Ernest Mortlock, Director of Works Department, Simons- 

 town. Cape. 

 Bay, Dr. B., P.O. Box 55i3< Johannesburg. 

 Bell, W. Reid, ALLCE., F.R. Met. Soc, M-l-E.S., P.O, Box 2263, 



Johannesburg. 

 Boulton, H- C-. CO Messrs- Pauling & Co., Ltd., Broken Hill, 



Rhodesia- 

 Brown, W. B., c/o Engineer-in-Chief, S..\- Railways, Cape Town. 

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

 Crockett, John, 10, Transvaal Bank Buildings. Johannesburg. 

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

 Leech, Dr. J. R-, 4th Avenue, Melville, Johannesburg- 

 Macfarlane, Donald, M-I-C-E-, H-M- Naval Dockyard, Simonstown, 



Capc- 

 Mirrilees. W- J-, 9, London Chambers, Durban- 

 Niehol. Thomas Thompson, P-O- Box 34. Springs, Transvaal- 

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

 Nicholson. J- Greg, Leliefontein, Government School, P-O- Carolinai 



Transvaal- 

 Petersen, H- T-, P-O- Box 5, Cleveland, Transvaal- 

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

 Southwell. Miss Jessie. 270. Visagie Street, Pretoria- 

 Van Oordt. T- F-, Harrismith, O-F-S- 



