IV CONTENTS. 



PAGF.. 



On the persistence of arsenite of soda in tlie ?oil : C. W. Mau.v. 



M.Sc, F.L.S., F.E.S. ... ,_,„. 3^5 



Mova Aquilce 329 



The ethical principle of equity: Rev. S. R. Wfxch, B.A„ D.D.. Ph.P. 33^> 



CheraicaJ warfare service 23A 



Leucocytogregarines. and their occurrence in South Africa: A.vnie 



Porter, D.Sc, F.L.S. i Abstract ) ... ... 335 



Stellar catastrophes ...... ... 336 



Soxne parasitic protozoa found in South .Vfricah fishes and aniplri- 

 • bians: Prof. H. B. F.s vth.\m. M.A., i.XSc. F.Z.S. {Abstracl) ... 33; 



South .\frican Coccida- s^'f'. 



Does it pay to educate the native?: Rev. A. E. Le Rov, B..\., P>.1). 330 

 The determination of phosphoric oxide, particularly in fertilisers. 



soil extracts, and the like: B. dk C. M.vkch.nnd, B.A., D.Sc... 3^7 



Alligators as food 363 



The diagnostic characters of some superlicial tunyi : lvrTii;.i M. 



DoiDGE, M.A.. D.Sc. F.L.S 364 



Vaccine prophylaxis in intluenza .36S 



Behaviour of bacteria towards arsenic: H. H. Green. D.Sc., and 



N. H. Kestfili.. B.A 369 



Paper from Megass 374 



.Some South African snails and the cercariie which attack tlieni : 



F. G. C.vwsTo.v. B.A., M.D,. B.C.. M.R.C.S.. L.R.C.P 37.S 



"J'he traditional historj- and customs of tlie Alakaranga (Varozwe) : 



E. G. HowM.A X 383 



Solar physics 393 



Ostriches in Arizona 393 



The killing of the Divine King in South .Africa : Rev. S. S. Dok.v \y. 



M.A., F.G.S. 394 



The collapse of kelp potash .Wi 



Health problems in countrv districts, Transvaal and (grange P'ree 



State: J.^xe B. H. 'Ruthveik. M.D., [..R.C.P., L.R.C.S.E., 



L.R.F.P.'S.. F.R.S.A 400 



The origin of novae 406 



Walnut bacteriosis : Bacterium iuglandis. Pierce- Kthe!. M. DoinoE. 



M.A., D.Sc. F.L.S 407 



Paraffin paper dressings in surgery 412 



Radioactive colouring of minerals 412 



Note on the persistence of the right posterior cardinal vein in Xciio- 

 .^pus Uevis. and its significance: R. J. ORTi.Eri\ M.A. (with one 



text figure) 413 



The pandemic in the United States 415 



Some engravi'd stones of the Lydcnburg district and North-East 



Transvaal : the occurrence of cup-and-ring markings in South 



Africa: Dr. C. Pyper (Pis. 6-1 1) 416 



The British Association 417 



Religious beliefs and supersf ition'i of the Xosas : a study in philology • 



J. McL.xrex, M.A '.■. , 418 



Radiotelephony 424 



Cattle as a factor in the economic development of South Africa: 



Rev. J. R. L. Kingon, M.A.. F.R.S.E.. F.L.S 425 



Calcium clouds in stellar space 440 



Arts and crafts of the Xosas: a study based on philologv : T. 



McLaren. . M.A ... . ' ... 44J 



Salt water as a preventive of epidemic influenza 449 



Some notes on a collecting trip to French Hoek: E. P. Pjiillips, 



M.A., D.Sc, F.L.S 450 



Some early geographers and explorers of .Africa: Rev. W. A. 



Norton, B.A., B.Litt. ; 479 



Purpose in Education : H. C. Reeve, ^LA 483 



Who buih the Rhodesian ruins? W. H. Tooke 492 



