REPORT

OF THE

FOURTEENTH ANNUAL MEETING OF THE

SOUTH AFRICAN ASSOCIATION

FOR THE ADVANCEMENT OF SCIENCE.

MARITZBURG,
1916.

JULY 3-8.

CAPE TOWN:

PUBLISHED BY THE ASSOCIATION.

1917.

CONTENTS.

PAGE.

OFFICERS AND COUNCIL

CONSTITUTION OF THE ASSOCIATION

TABLES: PAST ANNUAL MEETINGS:-

Places and Dates, Presidents, Vice-Presidents, and Local Secre-

taries

Officers of Local and Sectional Committees

Proceedings of Fourteenth Annual General Meeting of Members

Report of Council, 1915-16

Ninth Award of the South Africa Medal (Plate 1).

ASSOCIATION LIBRARY

ADDRESS BY THE PRESIDENT OF THE ASSOCIATION: Prof. L. CRAWFORD,

M.A., D.Sc., F.R.S.E.

xix

xxi

xxvi

xxix

xxxii

xxxvi

I

ADDRESS BY THE PRESIDENT OF SECTION A: Prof. J. ORR. B.Sc.,

M.I.C.E.

18

ADDRESS BY THE PRESIDENT OF SECTION B: Prof. J. A. WILKINSON,

M.A., F.C.S.

79

ADDRESS BY THE PRESIDENT OF SECTION C: I. B. POLE EVANS, M.A.,

BSc., F.L.S.

97

ADDRESS BY THE PRESIDENT OF SECTION D: M. S. EVANS, C.M.G.,

F.Z.S.

117

LIST OF PAPERS Read at the Sectional Meetings

129

The relation of production to consumption: P. J. DU TOIT..

132

Daylight Saving

139

Fischer's synthesis of depsides and tanning substances: Prof. J. A.

WILKINSON, M.A., F.C.S.

140

Decimalization of weights, measures, and coinage..

Daylight saving: R T. A. INNES. F.R..A.S., F.R.S.E..

148

149

On a unique occurrence of molybdenum in Natal: A. L DU TOIT.

BA, D.Sc., F.G.S.

Meteoric stones

Paper money and the gold exchange standard at the Cape: Prof. R.

LESLIE, M.A, F.S.S...

153

156

157

Ammoniacal Superphosphate

166

Experiments with the sugar-beet in South Africa: C. F. JURITZ,

M.A., D.Sc., F.I.C.

167

Forest progress in the Drakensberg: J. S. HENKEL (with two text

figures)

On the selection and breeding of desirable strains of beneficial

insects C. W. MALLY, M.Sc., F.E.S., F.L.S.

191

Note on the occurrence of trapdoor caterpillars at Alicedale: F.

CRUDEN. (Plate 2)

196

A class of alternants with trigonometrical elements: Sir T. MUIR,

LL.D., F.R.S. ...

197

Fossil man in Florida

200

Some factors influencing the solubility of phosphoric oxide in mixed

fertilizers containing superphosphates: E. V. FLACK

201

The wheat soils of the Alexandria Division. Cape Province C. F.

JURITZ, M.A., D.Sc., F.I.C. (with map)

211