CoNTKXTS. — Continued. G 



30. Infectious Experiments with Uredo Graminis, Pers 



(Title only)^ by J. B. Pole Evans, B.A., B.Sc. ... 310 



31. Immunity of certain Wheats to Rust (Title only), 



by J. B. Pole Evans, B.A., B.Sc. ... ... ... 311 



32. Systematic Description ot the Transvaal Plants of the 



Family of Amaryllidacag, (Title only), by Miss R. 

 Leendertz ... ... ... ... ... 312 



SECTION C. 



33. President's Address — Wastes in Mining, by Sidney J. 



Jennings, C.E., M.Am.I.M.E., M.I.M.M. ... ... 315 



34. The Realm of Alfalfa, by S. Hodder, F.R.C.T.... ... 323 



35. Locust Birds of the Transvaal (abstract), by F. Thomsen, 



Transvaal Department of Agriculture ... ... 331 



36. Notes on Insect Pests in the Transvaal during the Past 



Season (abstract)^ by C. W. Howard, Transvaal 

 Department of Agriculture ... ... ... 332 



37. South African Horticulture, by T. R. Sim, Conservator of 



Forests, Natal ... ... ... ... ... 333 



38. Smoke Abatement in Mining and Manufacturing Centres, 



by Arthur H. Reid, F.R.I. B.A., F.R.S.I. ... ... 349 



39. Irrigation and Inter-Colonial Co-operation, by W. L. 



Strange, M.Inst.C.E., Director of Irrigation, Transvaal 354 



40. Polycyclic Systems of Current Distribution, by Professor 



H. Bohle, M.V.D.E., M.I.E.E. ... ... ... 371 



41. Further Experience in the Bacterial Treatment of 



Sewage, by J. C. S. Beynon, A M.LC.E. ... ... 380 



42. Theoretical Investigations regarding Ferro -Concrete, by 



H. Kestner, C.E. ... ... ... ... 386 



43. An Underground Traverse, by A. E. Payne ... ... 401 



44. Water Rating, by G. W. Herdman, M.Inst.C.E. ... 420 



45. Irrigation in Egypt and in South Africa, by F. A. Hurley, 



F.C.H., A.M.I.C.E. ... .. ... ... 440 



46. Sanitary Science, by James S. Dunn, A.R.S.I., A. R.I. P. H. 454 



47. On the Construction of School Buildings (Title only), by 



G. Bernfeld ... ... ... ... ... 461 



48. Farm Irrigation in the Transvaal, by C. D. H. Braine, 



A.M.I.C.E. ... ... ... ... ... 462 



49. Power Generation and Distribution, by R. A. Dawbarn. 



M.I.C.E.. M.I.E.E. ... ... ... ... 468 



SECTION D. 



50. President's Address — Economic Waste, by Arnold H . 



Watkins, M.D., M.R.C.S. ... ... ... ... 479 



51. Native Education in its Higher Branches, by K. A. 



Hobart Houghton, B.A. ... ... ... ... 488 



