INDEX. XXtX. 



PACE. 



Rubber, Soya bean .•.••• '-^"^ 



RuDGE (Prof. VV. .\. D.). Observations of atmospheric electricity at 



Bloemfontein • ^62 



Some observations on atmospheric electri- 

 city taken in South Africa ""^ 



Rules for tlie award of medals ▼" 



Saxton (W. T.). Modern theories of heredity : ; • • • 37^ 



ScHWARZ (Prof. E. H. L.). Further observations on the origin of 



the Rand bankets ■ • • ■ 357 



Selective absorption of substances in the 



earth's crust 181 



— The origin of the Rand bankets 52 



Scorodite, Occurrence of, in Rhodesia (A. E. V. Zealley) 133 



Sectional Committees at Bulawayo xvi 



Meetings, List of papers read at 50 



officers at past meetings xii 



Sedimentary rocks. The, of the Rhodesian plateau ( F. P. Mennell) 250 



Selective absorption by the earth's crust (Prof. E. H. L. Schwarz) . . i8r 



Sexton, Prof. A. H., on Metallurgical operations 322 



Societies, Transactions of . .67, 115, 146, 179, 212, 243, 276, :^23, 355, 386, 406 



Solly (Mrs T. F.). The Universal Races Congress 128 



South Africa and the Falkland Islands. Geological correlation 



between 370 



— , Atmospheric electricity in ( Prof. W. A. D. Rudge) 232 



Medal vii, xxi, xxiii 



South African climatic conditions in regard to aviation ( R. T. A. 



Innes) 125 



tobaccos. Investigation of (M. Lundie) 186 



zoology. Prof. J. D. F. Gilchrist on 273 



Soya bean rubber i;^ 



Stereoisomerism, A new variety of (Dr. J. Moir) 253 



Structure of the elements 161 



Sugar content of maize stalks. The ( G. N. Blackshaw) 269 



Tanning 79 



Teaching of inorganic chemistry (Prof. R. B. Denison) 245 



Thornton (R. W.). Agricultural education 203 



Tobaccos, South African, Investigation of (M. Lundie) 186 



TooKE (W. H.). Notes on the East Coast Bantu of eighty years ago 80 



. The origin of vertebrates 162 



Traill (Dr. D.). Additional notes on evolution 405 



■ Theories of atmospheric variation 406 



Transactions of Societies . . 67, 115, 146, 179, 212 243, 276, 323, 355, 386, 406 



Transmutation of metals 231 



Tree planting in Southern Rhodesia (W. E. Dowsett ) 6c 



Truth among the pragmatists (Rev. Dr. S. Ji. Welch) 192 



Trypanosomiases of Rhodesia (L. E. W. Bevan) 135 



Universal Races Congress, The (Mrs. J. F. Solly) 128 



Uranium ores 185 



Versfeld (W.). The occurrence and distribution of manganese in 



the Western Districts of the Cape Province 199 



Vertebrates, The, origin of (W. H. Tooke) 162 



Vote, The transferable (Dr. J. Brown) 170 



Wattle Bark, Utilisation of 7.9 



Water, The purification of (Prof. H. Bohle) .398 



Weather forecasting (Rev. E. Goetz) 15 



