( 13 ) 
quarter, starting with 60 per cent, of standard when 
the London price is l/M. or under. Any rubber 
above the permitted amount from the F.M.S. ex- 
ported is subject to a heavy tax. The immediate 
result of restriction was to raise the price of rubber 
from -/9 to 1/4 per lb. 
Modern The remarkable adaptability of Hevea 
Agricultural to widely varying conditions of soil 
Practice on and situation in Malaya and other 
Rubber Eastern tropical countries has, in the 
Plantations, past, led to neglect of many agri- 
cultural operations, such as tillage, 
manuring and soil conservation, which are matters 
of routine in most other cultivations. In many 
cases this neglect has been justified by results, in 
others damage has resulted. 
The only work which was early realised to be essen- 
tial was the drainage of low-lying, flooded coastal 
lands, but with increasing certainty of the per- 
manence of plantations more attention is being 
directed to soil problems. 
It is proposed to consider briefly various methods 
of treatment of the soil, which are considered 
necessary in certain circumstances; and also pro- 
blems which require consideration in regard to the 
plant itself. 
Tillage. Any extensive and deep cultivation of 
the soil is impracticable after the trees 
are more than about 18 months old, and is in practice 
only carried out as an operation incidental to the 
removal of “ lallang ” when planting up such land. 
Shallow cultivation suffices for the propagation 
of jungle soil. In a few cases deep changkolling 
£2.-4 %/ZA; 
