CONTENTS. 



l'A(,I*. 



I'incly powdered Mercuric chloride (HgCU) for the destruction o£ 

 the Arp^entine ant, In'donixnne.v huiiu'lis Mavr. : C. W. ]\Iai.i.v. 

 :\F.Sc., F.E.S. F.L.S : '. 565 



Geology of Sotith-West Africa 567 



Potash from seaweeds 567 



Rock Paintings of the Northern Transvaal: Kev. N. Rouerts {Plates 



I7-2J) 5<>^ 



\ ariation in Agaratum convzoides (Family Compositse) : S. C.. Rich. 



MA., B.Sc : 574 



P'iro-resisting building construction : W. J. Delbridge, A.R.I.B./V. 



{Title only) 575 



Standards and stanilard methods in the analysis of food and drugs : 



J. S. Jamikson, F.I.C., F.C.S. (Title only) 57- 



Wattle growing : its effect on the wattle-insect pro!)Ieni : C. IJ. 



Hardenberg,. M.A. {Title only) 575 



The farming industry in Natal: Rev. J. Scott (Title only) 575 



On certain remarkable resemblances between the formation of 

 images and colour-vision in man and certain vertebrate animals : 

 G. Lindsay Johnson, M.A., M.D. (Title only) 575 



A bacterial blight of pear blossom : Miss E. M. Doid(;e, M.A., D.Sc. 



F.L.S. ( Title only) 575 



1 rade Schools as aids lo industry : Prof. J. Orr, B.Sc, M.I.C.E, 



jNI.I.jilech. E. (Phtcs 23-27 and one text Hgnre) 576 



A preliminary account of some breeding experiments with fox- 

 gloves : Prof, E. Warren, D.Sc. {Title only) 598 



Note on the eversion of the ptilinum during the emergence of the 

 house fly, Mnsca donicstica Linn. ; C. W. IM ally^ M.Sc, F.E.S. , 

 F.L.S 599 



An account of the chief types of vegetation in Soutli Africa; with 

 notes on the plant succession: Prof. J. W. Cews, M.A., D.Sc. 

 (Tiile only) 599 



Commercja! afforestation in South Africa: T. R. Sim (Title only) 599 



The respiratory organs of dragon-fly larvse : S. G. Rich, M.A., B.Sc. 600 



The association of game with tsetse-fly disr ■=' n domestic animals 



in Zululand: D. T. Mitchell, M.R ^ ... (Title only) 602 



A bacterial spot of citrus: ISIiss I*- .... 1)oiik;k, M.A., D.Sc, F.L.S. 



( Title only) 602 



Citrus canker in South Africa: Miss E. M. Doidcb,M. A., D.Sc, F.L.S. 



{ Titi-e only) 60^ 



Some Place names of Tsolo : Rev. J. R. L. Kingox, ^^.A., I'.L.S. 6(33 



Members of the genus Aloe in South Africa: L B. Pole Evax.s, 



M.A., B.Sc, F.L.S. (Title only) 620 



Eulogies (iziBongo) of the Zulu Kings: J. Stu.a.rt (Title only) ... 620 



More Europeans, and hqw: J. Kirkiian, J.P., M.P.C. (Title only) 6jo 



Afrka iiTvd skin colour: J. T. Gibsox (Title only) 620 



