' ■ IBR ARY ■ 



CONTENTS.-\ '*'•'*' /O 



PAG*. 



Officers, anh Cooncil i 



Tables : Past Annual MfefeTiNos ; — 



Places and Dates, Presidents. \ ice-Presidents, and Local 



Secretaries ii 



Sectional Presidents and Secretaries iV 



Evening Discourses viii 



JOHANNESBURG MEETING, 1918:— 



General Meetings ix 



Officers of Local and Sectional Committees x 



Proceedings of Sixteenth Annual General Meeting of Members xiv 



Report of Council, 1917-18 xviii 



General Treasurer's Account. 191 7- 18 xxiii 



Eleventh Award of the South Africa ^fedal (Plate i) xxVii 



Association Library xxx 



Address by the President hf the Association: Dr. C. F. Juritz, 



' M.A., F.LC I 



Address by the President of Section A : Prof. J. T. Morrison, 



- M..A., B.Sc. F.R.S.E 31 



Address by the President of Section B : P. .A. Wagner, B.Sc, 



Ing.D , ... 45 



Address by the President of Section C: C. E. Lecat, B.Sc. ... 70 

 Address by the President of Section D : Prof. E. T. Goddard, B.A., 



D.Sc ... ... lOb 



.\ddress by the President of Section E : Rev. W. A. Norton, B.A.. 



B.Litt 107 



Address by the President of Section F. : Prof. T. M. Forsyth. 



M.A., D.Phil 121 



List of papers read at the Sectional Meetings .... ... ... 135 



The desiccation of Africa : the cause and the remedy : Prof. F. IL L. 



ScHWARz, A.R.C.S.. F.G S 130 



Uses of Mirahilis jalapa 190 



Roval Society of South Africa 190 



The medicine man in Natal and Zululand : Hon. Mr. Justice C. G. 



Jackson ... ... ... i0i 



Safety in winding operations : J. A. VaUghan, M-LCE., M.l.Mech.E. 265 



.\tmospheric nitrogen 216 



The world's wheat crops 216 



Research grants 216 



The medicinal springs of South Africa : supplement T : Prof. M. M. 



RiNDL, Ing.D 217 



Solar bombs 225 



A note on the flora of the Great Winterhoek Range: E. P. Phillips. 



M.A., D.Sc, F.L.S 226 



The natives of Natal in relation to the land : M. S. Evans, C.M.G.. 



F.Z.S 235 



Stellar distances and magnitudes 246 



Some results of ostrich investigations: Prof. J. E. Duerden. M.Sc. 



Ph.D., A.R.C.S. (Plates 2-5 and four text figures') 247 



The electro-magnetic theorv of light 285 



Evolution and mankind: Prof. H. B. Fantham. M.A., D.Sc ... 287 

 The Zulu witch doctor and medicine-man : J. B. McCord, M.R.C.S.. 



L.R.C.P 306 



Botanical survey • 3i| 



Electrical conductivity of milk 3i8 



Suggestions towards a better provision for. the medical needs of the 



natives : C. T. Loram, M.A.. LL.B.. Ph.D 3I§ 



Epidemic catarrhal fever .• ... 3*4 



32476 



