THE NETHERLANDS EAST INDIES 289 



ESTIMATED FUTURE PRODUCTION, 1914 TO 1921 



The above is calculated on the following basis 



Taking into consideration that a large proportion of 

 the younger rubber suffered in past years by inter- 

 planting with Liberian coffee and from careless cultiva- 

 tion, from which it is only now recovering, this basis 

 for calculating future production may be considered a 

 sound one. 



The amount of Rambong (Ficus) rubber exported in 

 1910 was 228 tons ; but this dropped off to practically 

 nothing in 1911, for the reason that the high prices of 

 the previous year induced planters to tap the Ficus 

 trees heavily, and they had not recovered sufficiently to 

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