CONTENTS. 



PAGE. 



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 Gyrpscope : W. H. Logemax, 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. (Title only) 404 



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., 



^.Sc. (Abstract) 406 



Transactions of Societies 406 



Officers and Council, 191 1-1912 i 



List of Members , Hi 



Index' vxv 



