The following Subjects for Papers are suggested :— 
Planting, weeding and tapping of trees; the question of yields 
and cost; growth and plant sanitation ; insect and fungus pests ; 
soils; labour; manures, &c. 
Exports and imports of wild and cultivated rubbers; evolution 
of prices; ratio of prices to consumption and crops. 
Collection and coagulation of latex; smoking; drying and 
packing of rubber; chemical and physical study of latex and of 
raw rubbers. 
Analysis and physical and chemical tests of raw and 
manufactured rubbers; vulcanization tests and methods; evaluation 
of raw rubbers; standardization of plantation rubbers. 
Labour in all countries. Indentured labour. 
Substitutes; waste, reclaimed and reformed rubber. Synthetic 
rubber. Processes of manufacture. Patents. 
EXECUTIVE COMMITTEE 
FOURTH INTERNATIONAL RUBBER AND ALLIED INDUSTRIES 
CONGRESS. 
President: 
Sir HENRY A. BLAKE, G.C.M.G. 
Chairman: 
JOSEPH TORREY, Ph.D. 
Vice-Chairmen: 
Sir DANIEL MORRIS, K.C.M.G., D.C.L., D.Sc. 
JOHN McEWAN, Esq. (Vice-Chairman Rubber Growers’ Association). 
ARTHUR LAMPARD, Esq. (Messrs. Harrisons and Crossfield Ltd). 
Prof. PERROT, Ecole Superieure de Pharmacie, Universite de Paris. 
C. E. S. BAXENDALE, Esq. (Planter). 
HERBERT WRIGHT, Esq., A.R.C.S., -F.L.S. 
PHILIP SCHIDROWITZ, Ph.D. 
LOUIS HOFF, Esq. (Harburg and Vienna Rubber Works). 
F. PEGLER, Esq. (Northern Rubber Co.) 
A Delegate from Brazil to be appointed. 
EDWARD G. SALMON, 1 
A. STAINES MANDERS, | Hon ' Secretaries. 
Congress Committee of the Rubber Growers’ Association ; 
The Hon. EVERARD FEILDING. 
R. W. HARRISON, Esq. 
RICHARD HOFFMAN, Esq. 
This Committee will shortly issue a special notification in reference to the 
Congress. 
Descriptive, 
Historical and 
General. 
Cultivation & 
Botanical. 
Commercial, 
Statistical and 
Financial. 
Rubber 
Preparation. 
Rubber 
Testing. 
Labour 
Organization. 
Rubber 
Nomenclature. 
