156 



PARA RUBBER, 



£6 per ton. The decorticated seeds have been valued at £10 to 

 £12 per ton, and brokers in Europe consider that it would he more 

 profitable to ship the seeds from the Tropics to Europe.* 



Para Rubber Seed Oil and Fat. 



"The kernels constitute -about 50 per cent, by weight of the 

 whole seeds, and yield 423 per cent, of oil. The husk and kernel 

 together yield 20 per cent, of oil. The oil is clear, light yellow in 

 colour, and on saponification with caustic soda furnishes a soft soap 

 of yellowish colour. If the seed has been ground to a meal the 

 oil extracted is solid owing to decomposition ; but that expressed 

 from the freshly-ground seed is liquid. The husks contain a solid 

 fat in small quantities."* 



Para Rubber Seed Meal and Cake. 



Old ground seed so finely divided as to form a meal was reported 

 upon by the Imperial Institute as follows :- 



Chemical Analysis. 



The ash was found to contain 30-3 per cent, of phosphoric acid 

 present in the form of phosphates, which is equivalent to 1*07 per 

 cent, of phosphoric acid in the meal. 



The meal thus prepared is unsuited for cattle food on account 

 of the large quantities of free fatty acids and cannot be used for oil 

 extraction. '"It is probable, however, that if the oil were expressed 

 from the decorticated seeds, the residual cake could be utilised 

 as a feeding material, as is shown by the following comparison 

 between the calculated composition of such a cake and the com- 

 positions of some commerical feeding cakes." 



Calculated Linseed Cake. 



Composition , — -* ^ Cotton Seed 



of Para rubber New Old Cake. 



Seed Cake. Process. Process. New process. 



* A Report of the Director, Imperial Institute, London. 



