VI <:o^E2iri. 



PAGE. 



The alleged arrest of mental development in the native: C. T. Loram, 



M.A., LL.B.. Th.D. (Title only) .:. 482 



Ancient Panama Canals 482 



Experimental expression of the relationship between the content of a 



foodstuf¥ in anti-neuritic hormone and the period of healthy 



survival oi animals upon it: H. 11. Green, D.Sc, F.C.S. (^Abstract) 48.? 



Seaweed as fodder 484 



Early man in America 484 



Pomes .applanatus (Pers.) Wallr. in South Africa, and its effects 



on the wood of Black Ironwood trees (Olca laiirif olia) . P. A. 



VAN DER Byl. jNI.A., D.Sc, F.L.S. {Plates 14-17 and two text 



figures) 485 



Some factors in the replacement of the ancient East African Forest 



by wooded pasture land: C. F. M. Swvnnerton, F.L.S. F.E.S., 



F.R.H.S. : 493 



Note on tlie micro-titration of arsenic: H. H. Green, D.Sc, F.C.S. 



(Abstract) 518 



The vitamine content of maize and maize milling products, and the 



ambiguity of its correlation with the phosphoric oxide content : 



H. H. Gkeen, D.Sc, F.C.S. (Abstract) 519 



The suppling kiln as a mean of destroying insects boring in wood : 



C. W. Mally, M.Sc, F.L.S., F.E.S. (Title only) 520 



Opportunities for the selection and breeding of desirable strains of 



beneficial insects: C. W. Mai.ly, M.Sc, IvL.S., F.E.S. (Title 



only) 520 



Note on anhydrous liquid hydrocyanic acid as a funiigant : C. W. 



Mally, M.Sc, F.L.S.. F.E.S. 520 



South x\frican shells 520 



Some Central African folk-lore tales : Rev. J. R. L. Kingon, M.A., 



F.R.S.E., F.L.S , 521 



Nocardia cylindracea : a South African otomycosis : W. E. de Korte, 



M.B., M.R.C.S., L.R.C.P. (Title only) 524 



Neglected assets of Empire: Afrs. Julia F. Solly (Title uuly) ... 524 

 An electric vehicle charging plant: J. W. Kirkland, M.Am.I.E.E. 



(Plates 18-19) ■ 525 



Ars Sophoclis interpretandi : with special reference to tlie Trachiniai : 



H. G. ViLjOEN, B.A., D.Litt 527 



Notes on Irving Fisher's theory of gold: A. Aiken (Title only) . . . 539 

 A plea for the classics in women's education : Miss K. M. Earle 



(Title only) ^ 539 



A preliminary note on dwarfs appearing in Gluyas Early (wheat) 



hybrids: Prof. J. H. Neethling, M.Sc (with six text figures).. 540 

 Industrial development: K. Austin, M.Am.I.M.E. (Title only) ... 547 

 The ascent of sap in plants: Prof. H. A. Wa(,er, A.R.C.S. (Title 



only) ... ... . . . _ ... 547 



Variation in Ai^eratuin cony::oides (Family Composite) : S. G. Rich, 



M.A., B.Sc. (Title only) 547 



Some sense defects psychologically considered : Rev. F. C. Kolbe, 



B. A., D.D. (with two text figures) ... 54^ 



Bantu place names in the Cape Province : Rev. J. R. L. Kingon, 



U.A.,F.R.S.E.,F.h.S. (Title only) .^ 556 



A key to the families and genera of spermatophyta in the Transvaal 



and Orange Free State : J. Burtt-Davy. F.L.S., F.R.G.S. ... 556 

 The Woolly Aphis (Eriosonia lanigera) as a factor in apple culture: 



C. W. Mally, M.Sc, F.L.S., F.E.S 556 



Officers and Council. 1917-18 i 



List of Members Hi 



Index vxxiii 



