CONTENTS. Vll 



PAGE. 

 Further observations on the origin of the Rand Bankets : Prof. 

 E. H. L. ScHvvARz, A.R.C.S., F.G.S. (Phite 3 and one text 



fig"i-e) 357 



Research Grants 364 



Radioactivitj- and molecular structures 364 



The pronunciation of English : Prof. A. S. Kiuu, M.A 365 



Geological correlation between South Africa and the Falkland 



Islands 37c 



Modern theories of heredity; W. T. Saxton, M.A., F.L.S. 



(Four text figures) 371 



A mineral survey of the Zinc and Lead deposits of Broken Hill, 

 Northern Rhodesia: A. E. V. Zealley, A.R.C.S., F.G.S. (Plate 



4 and four text figures) 389 



The purification of water: Prof. H. Bohle, M.I.E.E. (Title only) 398 

 A Basuto and Bengali folk tale : Rev. S. S. Dornan, M.A., F.G'S. 



( Title only) 398 



Electoral reform — Proportional representation : J. Brown, M.D., 



CM., F.R.C.S., L.R.C.S.E. (Abstract) 399 



The Gyroscope: W. H. Logeman, M.A. (Precis) 403 



A relation between the geology and metallurgy of gold: F. T. Mum- 

 ford, A.I.M.M. (Abstract) ' 404 



Electric Clocks : Prof H. Bohle. M.I.E.E. (7?7/e on/v) ^04 



Additional notes on evolution: D. Traill, M.A., M'B., Ch.M., B.Sc. 



(Abstract) 405 



Theories of atmospheric variation : D. Traill, M.A., M.B., Ch.M., 



B.Sc. (Abstract) 406 



Transactions of Societies 406 



Officers and Council, 1911-1912 i 



List of Members Hi 



Index XXV 



LIST OF PLATES. 



TO FACE PAGE 



The South .Africa Medal xxiii 



Dr. H. Bolus 69 



Origin of Rand Bankets 359 



A Mineral Survey of the Zinc and Lead deposits of Broken 



Hill, Northern Rhodesia 390 



