CONTENTS. 



PAGE 



Peter MacOwan,' D.Sc, F.L.S. (Plate 3) .. 71 

 The Vegetation of the Southern Namib : R. Marloth, M.A., Ph.D. 



(Plate 4) 80 



Congress of Radiology and Electricity . . .... . . . . 87 



Colouring of Poisons . . . . . . . . . . . . . . 87 



The Black Danger : J. M. P. Muirhead, F.R.S.L., F.S.S., F.R.S.E. . . 88 



Chromite Ore from the Transvaal . . . . . . . . . . 91 



The Breede River Irrigation Works : T. E. Scaife, A.M.I.C.E. (Plates 



5 and 6) . . . . . . . . . . • . 92 



The Martian Canals . . . . . . . . . . . . . . . . 98 



Fockea Capensis . . . . . . . . . . . . . . . . 98 



The Chemical Composition of Milk in the Cape Colony : St. C. O. 



Sinclair, M.A. . . . . . . . . . . . . -. . . . 99 



Notes on the origin of the Diamonds of German S.W. Africa : R. 



Marloth, M.A., Ph.D. 112 



A Description of the Modderpoort neighbourhood one hundred ^^ears 



ago: Rev. Father Norton, S.S.M. .. .. .. .. ..114 



Agriculture in Nyasaland . . . . . . . . . . . . . . 147 



Institute of Chemistry .. .. ,.. .. .. .. .. 117 



Iron Ores of Nyasaland and Rhodesia . . . . . . . . . . 1 1 S 



New Books . . . . . . . . . . . . ■ • • • . . iiS 



