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THE PARA RUBBER TREE 



Composition of Para Rubber from Cultivated Trees. — 

 The Para rubber prepared on the plantations in the 

 East is of a very high degree of purity. Very little 

 moisture or ash is present, and the percentages of resin 

 and protein are usually low, with the result that the 

 rubber may contain as much as 95 or 96 per cent, of 

 caoutchouc. The following analyses made at the Imperial 

 Institute will illustrate the composition of specimens 

 from diflFerent countries : 



