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398. The most economical way of applying cotton-cake 

 and other edible oil-cakes, to the soil, is to use them as 

 cattle-food, on the land intended to be enriched, the cattle 

 being hurdled in here and fed in movable troughs. 



399. The colour produced in cotton oil by sulphuric and 

 nitric acids, is a characteristic mark of great value. This 

 varies from a deep reddish brown to almost black. Cotton 

 oil has also the remarkable property of reducing silver com- 

 pounds into the metallic state. It is intermediate in proper- 

 ties between drying and non-drying oils. It has a pleasant 

 taste and it is almost odourless and it is therefore used for 

 cullinary purposes, and as a substitute for olive oil. Having 

 drying property it is unsuitable for lubricating purposes. It is 

 not adapted for medicinal use in place of olive oil. The use 

 of cotton oil for medicinal purposes is pure adulteration which 

 is forbidden by law. It is an important oil for the soap-making 

 industry. 



400. For every pound of lint there is about 3 Ibs. of seed. 

 100 Ibs. of American cotton seed yield about 2 gallons of oil, 

 48 Ibs. of oil-cake and 6 Ibs. refuse oil fit for soap-making. 

 With ordinary ghani 25 per cent, of oil can be obtained from 

 the seed but the seed should be very free from adhering 

 cotton. The use of cotton gins is highly desirable in India, as 

 the separation of seed in a clean state may be quickly effected 

 thereby. A small hand-gin would yield 100 to 150 Ibs. of lint 

 and 300 Ibs. of clean seed per diem. Grinding establish- 

 ments in the midst of cotton-growing districts may well be 

 employed in extracting oil and supplying oil-cake. This is an 

 industry for which there is a fine opening in India. It is the 

 income from seed that makes all the difference in America 

 between a profitable and an unprofitable cotton crop. The 

 magnitude of this opening in a new direction can be inferred 

 from the fact that India produces about 10 million cwt. of 

 cleaned cotton. This represents about 30 million cwt. of 

 seed. Allowing half this quantity as required for seed and 



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