262 



NEW BOOKS. 



A Study of the Agricultural Soils of the Cape Colony. By C. F. Juritz, 

 M.A.. D.Sc, F.I.C. pp. vii. + 221. Roy. 8vo. Cape Town : T. Maskew 

 Miller. 1909. Price, 7s. 6d. An account of a series of investigations 

 into the nature and composition, from an agricultural point of view, of 

 about 800 soils from various parts of the Cape Colony ; with a discussion 

 of agricultural chemical methods, the relation of the plant-food content 

 of certain soils to their geological origin, some of the problems of soil 

 alkalinity, and the physical composition of soils. 



Transactions of the Royal Society of South Africa. Vol. I., Pt. 2, 

 19 10, pp. 317-477 + xxxviii., 4 plates. los. Cape Town : Published 

 by the Society. Contents : — Theorem regarding a sum of differential 

 coefficients of Principal Minors of a Jacobian : T. Muir. — Spectrum of the 

 Ruby ; a new characteristic test : J. Moir. — -Upper limit for the value 

 of a determinant : T. Muir. — Remarks on some experiments with snake- 

 venom : W. Frei. — Note on a Ccenunis of the Duikerbok : L. Gough. — 

 Evolution of the River System of Griqualand West : A. L. du Toit. — 

 Rainfall of South Africa ; the possibility of prediction over the south- 

 west : A. G. Howard. — Some points in the Morphology and Biology of 

 a new species of Haworthia : S. Schonland. — .Absorption of water by 

 the aerial organs of some succulents : S. Schonland. — Note on an 

 abnormal seedling of W iddringtonia cupressoides : H. S. Morris. — The 

 genesis of the Chemical Elements : J. Moir. — Some new South 

 African succulents : R. Marloth. — Evaporation in a current of air : 

 J. R. Sutton. — Absorption of water by the aerial organs of plants : R. 

 Marloth. — Statement of Silayi with reference to his life among the 

 Bushmen : W. E. Stanford. — Some flowering plants from the neigh- 

 bourhood of Port Elizabeth : S. Schonland. — Borchardt's form of the 

 Eliminant of two equations of the wth degree : T. Muir. — Revised list of 

 the Flora of Natal : J. Medley Wood. — Relationships of South African 

 Fossil Reptiles to those of other parts of the world : R. Broom. 



Transactions of the Geological Society of South Africa. Vol. XII. 

 July-Dec, 1909. pp. 1 12-212, 3 plates. 21s. Johannesburg: Trans- 

 vaal Leader Office. Contents : — The Pleistocene deposits of Port ElizaT 

 beth : E. H. L. Schwarz. — On contact metamorphism in the Western 

 Transvaal : A. L. Hall. — The occurrence of diamonds in Dwyka con- 

 glomerate and Amygdaloidal Lavas ; and the origin of the Vaal River 

 diamonds : H. S. Harger. — Some notes on the geology of the Katanga 

 country and copper belt : F. E. Studt. — On the origin of the South 

 African tin deposits : R. Recknagel. — Geological observations in the 

 Lace Diamond Mine, now known as Crown Diamond Mine : H. Merensky. 

 —Note on the Roberts Victor Diamond Mine : E. H. V. Melvill. 



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^ 



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



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



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



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



Hutt, Ernest W., P.O. Box 2S62, Johannesburg. 



Kessler, L., ^Mining Engineer, Rayton, Transvaal. 



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



Zimmerman, J., P.O. Box 1743. Johannesburg. 



