CONTENTS. 



PAcr:, 

 The Black Wattle Industrj^ — Acacia molUssuna Wfllcl., Acacia 



decurrens Willd-, var. mollis Benth. : T. R. Sim 279 



Manganese as a fertiliser 301 



Note on the feeding habits of a ladybird larva: C. W. JI. Smit ... 302 



Tree-planting competitions in Natal : J. S. Henkel 306 



J.M.WOOD 313 



The metric system of weights and measures, and the decimalisation 



of the coinage: R. T. A. Innes. F.R.A.S., F.R.S.E 314 



Use of meteorites by primitive man 317 



The modification of South African rainfall: J. M. Sim 318 



New Books 326 



Townshend, Taylor * Suashall, Printers, Cape ; own. 



