-1'//' INDEX. 



PAGE 



Staxlev (Prof. G. H.). A South African iron industr}'; prospects 



and possibilities ii6 



Star near Alpha of Centaurus. The. Parallax of ( R. T. A. Innes) 141 

 Stead (A.\ Plant toxins, a cause of infertility in soils: a South 



African observation 439 



Stellenl)osch. General Aleetinss at xix 



. Officers of local and sectional committee. IQ17 xx 



. The geology of the neighbourhood of (Prof. S. J. 



Shand) 124 



Stenography as an aid to the phonetic analysis and comparison of 



African languages (Rev. W. A. Xorton ) 421 



Stinkvliccj. The {Blissiis di^^^loMrrus Dist.) C. W. Mally) 467 



Sugar-cane wax ... 360 



Sulphate of ammonia 420 



Sun. A green 123 



— — , The, Water vapour in J04 



Suppling kiln. The, as a means of destroying insects boring in wood 



(C. W. Mally) ^ 520 



Survey, Botanical, of South Africa (J. Burtt-Davy) 64 



SwvxxERTON (C. F. AL), Some factors in the replacement of the 



ancient East African fore.st by wooded pasture land... 493 



Tales. Central African folk-lore (Rev. J. R. L. Kingon ) 521 



Technical education. The movement towards a national system of 



( W. J. Home ) 445 



Terrestrial physics. Problems in. that require the attention of South 



African physicists ( Prof. J. T. Morrison) 433 



Theories of Cosmogonj' 140 



Theory of gravitation, Einstein's 172 



Thorn veld. The. Plant succession in (Prof. J. \V. P>ews) 15,^ 



Tomato waste. Utilisation of 384 



Toxins, Plant, a cause of infertility in soils (A. Stead) 439 



Transactions of Societies . . . 152, 247. 295, 344, 376, 424. 432. 455, 460 

 Transvaal, The, Families and genera of Spermatophyta in (J. Burtt- 

 Davy ) 556 



Treasurer's Statement. 1916-1917 xxxiii 



United States, The, Entomological education in (Dr. E. S. Cogan ) . . 345 



Universes. Other, than ours 262 



Vax dek Byl (Dr. P. A.), Foiiics apphiiiatits (Pers.) Wallr. in 

 South Africa, and its effect on the wood of Black Iron- 

 wood trees (Olea laurifolia) 485 



Vax dek Ltngex (J. S.). The scope of radiology 354 



Vax" her RiET (Prof. B. de St. J.). Simple expedients in experimental 



chemistry 464 



Vapour, Water, in the sun 404 



Variation in Agcratu):i LOiiy;:oidcs ( S. G. Rich) =,47 



Vegetation, Effect of, on the rainfall of South Africa ( H. Pea'ling) 142 



Vehicle charging plant. An electric (J. W. Kirkland) 525 



^\■rmian parasitological research with reference to South African 



domestic and native animals ( C. S. Grobbelaar) ... 243 



A'lLjoEX (Dr. H. G.)- Ars Sdphoclis interpretandi 527 



A'itamine content of maize and maize milling products- and the 

 ambiguity of- its correlation with the phosphoric oxide 



content (Dr.- H. H. Green) ... . 419 



\'olatile acidity of wine (Prof. A. 1. Perold) 405 



W.\r,ER (Prof. H. A.), The Ascent of sap in plants 547 



War. The. and the weather 375 



, Parasitic protozoa in relation to (Prof. H. B. Fantham) 297 



