666 



ANNUAL REPORT OF TJIF 



Oft". Doc. 



These figures clearly show that fully 37.5 per cent, of the seed-oil 

 remains in the press-cake and that the recovery of the lintel from the 

 hull is very imperfect, being barely one-ninth of the amount present. 



The relative composition of the undecorticated seed, the hull and 

 the cotton-seed meal are as follows:* 



(V 



a. 



Moisture 



Corrpcsition of dry matter 



Ash 



Protein, 



Fiber 



Nitrogen-fiee extract, .. 

 Fat, 



7.47 



7.60 

 51.12 



4.90 

 26.37 

 10.01 



100.00 



Hand-separated hulls contain only half as much protein and one- 

 fourth as much oil. The milling operation results in a tearing away 

 of a portion of the true kernel with the hull. 



Good cotton-seed meal is yellow in color with a greenish tinge 

 and possesses a pleasant nutty odor. On aging, it darken®, especially 

 under conditions rendering it rancid or musty. Dark color indicates 

 a possible admixture of black cotton-seed hulls, but not all dark 

 colored samples are thus adulterated. Another impurity reported is 

 an admixture of wastes from rice mills. 



At a recent convention in New Orleans, the cotton-seed oil pro- 

 ducers adopted the following rules: 



'^17. A ton of cotton-seed meal is 2,000 pounds, unless otherwise 

 stated. A sack of cotton-seed meal is 100 pounds gross weight. 



''Cotton-seed meal shall be classed and graded as follows: 



"IS. Choice. Must be the product from choice col ton-seed cake 

 when finely ground, must be perfectly sound, sweet and light yellow 

 color (canary), free from excess of lint and hulls. Analysis must 

 contain at least 8 per cent, of ammonia. 



''19. Prime. Must be made from prime cake, fin-ely ground, of 

 sweet odor, reasonably blight in color, yellow, not brown, or reddish, 

 and free from excess of liul oi' hulls and by analysis must contain 

 at least S per cent, of ammonia. 



"20. Off. Any cotton-seed meal which is distinctly deficient in 

 any of the rrMpiirements of prime quality, either in color, odor, texture 

 or nnalvsis, or all." 



•Bulletin Tenn. A^r. Exp. Bta.. IV, No. B, p. 144. 



