464 



THE INDIA RUBBER WORLD 



[April 1, 1920. 



THE RIVER OF RUBBER. 



Two hundred million gallons of rubt 

 are what the River of Rubber deliverec 

 of dry rubber, is more than 300.000 t 



This great stream has affluents, big 

 and subtropical world. 



The main streams (or erades of 

 South American, African, East Indian 

 divided into some eighty sorts, bearinj 

 ports. A further subdivision, due t< 

 coagulation, brings the number of co 



Not many years ago Brazil was the 

 production of 35,000 to 40.000 tons. 



Central American trees, and those of Southern Asia. Then ca 

 root and tree rubbers of Africa and the shrub rubber of Mex 

 Still later, plantation rubber became a factor, constar 

 now supplies four-fifths of the total. 



In 1917 the world's crop was 265.698 tons, of which 213,070 tons were 

 plantation, with 39,370 tons from Brazil and 13,258 tons from all other 

 sources. In 1918, restrictions, mainly on account of the Great War, re- 

 duced production nine per cent, the figures being 200,950 tons plantation, 

 30,700 tons Brazilian and 9,929 tons from other countries. The estimated 

 figures for 1919 are 292,000 tons plantation, 35,000 tons Brazilian and 6,500 

 ions from other sources, with a reserved stock of 50,000 tons, makes a 

 total of 384, OCO. 



