INDEX. 



References to addresses, reports, and papers printed in extended form ate given in italics. 



* Indicates that the title only of a communication is given. 



When two references to a paper are given, the second is to a note of its publication elsewhere, 

 or to a note of other publications by the author on the same siihject. 



Abel, Prof. 0., Ideas on causes of 



degeneration of species, 329. 

 Abo, Dr. C. V. von, Engineering problems 



of South African railways and harbours, 



363*. 

 Accessory minerals of igneous rocks, 



Significance of, by Dr. A. K. Wells, 



324*. 

 Acoustics, The new, by Prof. W. H. 



Eccles, 312*, 427. 

 Actinium, Origin of, by Sir E. Rutherford, 



310*, 427. 

 Adamson, Dr. R. S., Vegetation of Cape 



Peninsula. 384.* 

 Adaptation, by Prof. D. M. S. Watson. 88. 

 Adaptation, New interpretation of, bv 



Dr. C. S. Myers, 379*, 429, 

 Aerial surveying. New method of, by 



H. G. Fourcade, 343. 

 Africa and Science, by J. H. Hofmeyr, 1. 

 African arc of meridian, by G. T. McCaw, 



343, 428. 

 Agricultural land of South Africa and its 



users, by Prof. J. W. F. Grosskopf, 358. 

 Agricultural prices, Discussion on 



stabilising, 357. 

 Agriculture and the Empire, by Sir R. 



Greig, 230. 

 Alcock, Mrs. N. L., International aspect 



of plant diseases, 417. 

 Alcohol mixtures as fuels. b3^ Col. J. G. 



Rose and Prof. D. McMillan, 361*. 

 Alden, Dr. H. L., Yale southern station, 



316*. 

 Ammonia system of compounds, bv 



Prof. E. C. Franklin, 321. 

 Anatomy of African species of Salicornia 



and allied genera, by Miss D. M. Welsh, 



391. 

 Anti-dumping regulations of the South 



African tariff, by Prof. A. Plant, 357*. 

 Antiknocks on combustion of hydro- 

 carbons. Influence of, by A. C. G. 



Egerton, 320, 427. 

 Apparent periodicities in the work curve, 



by S. J. F. Philpott, 383. 

 Application of Prof. A. Fowler's experi- 

 mental data to astrophysical problems, 



by R. H. Fowler, 315. 



xlpprenticeship and school, by Prof. F 



aarke, 410. 

 Aquatic . . . flora of Witwatersrand 



district, by Miss D. Weintroub, 390. 

 Archer. Prof. R. L., Disciplinary value of 



Latin, 307. 

 Armstrong, A. L., Excavations at 



Bambata, 308*. 

 Aston, Dr. F. W., Mass spectra, 314*, 



427. 

 Atmosphere, General circulation of the, 



by Prof. J. T. Morrison, 311*. 

 Atmospheric ozone, . . ., by Prof. S. 



Chapman, 314*, 427. 

 Autogamy in bacteria, by T. Schrire, 373. 



Balfour, H., South Africa's contribution 

 to ijrehistoric archaeology, 153. 



Bamber, Miss R. C, Segregation, 333. 



Banking in South Africa, by W. H. 

 Clegg, 360*. 



Barger, Prof. G., Relalion of organic 

 chemistry to biology. 51. 



Barker, Prof. A. P., Wool manufacturing 

 requirements . . ., 416, 430. 



Barker, Dr. S. G., Scientific measure- 

 ments of attributes of wool fibre . . . 

 415, 430. 



Bartlett. F. C, Experimental method in 

 psychology. 186. 



Babtlett, R. J., Memory value of colour 

 in advertising, 382. 



Base exchange between clay and solutions 

 of sodium salts . . ., by E. McK 

 Taylor, 323. 



Bassett, Prof. H.. Cobalt chloride colour 

 change, 321, 427. 



and R. G. Dureant, Inter-relation- 

 ships of the sulphur acids, 320, 427. 



Batonga of Northern Rhodesia, by Prof. 

 L. Cipriani, 373*. 



Bather, Dr. F.A., at French Association 

 meeting, Havre, 425. 



Bews, Prof. J. W., on Origin and evolu- 

 tion of South African flora, 388. 



and J. E. van deb Plakk, Rospon.sc 



to the reeting season in South African 

 plants, 392. 



