92 ELEMENTARY TREATISE ON STOCK FEEDS AND FEEDING 



grind cotton-seed hulls and mix them with the meal and sell the 

 product as cotton-seed meal. These hulls are ground so fine 

 that it is impossible to detect the extent of their presence with 

 the naked eye. Sometimes a meal is of high-grade (44-49 per 

 cent, protein) and the hulls are added to bring down the pro- 

 tein content to the guarantee of say 41 per cent, protein. 



Commercial Classification. The Inter-State Cotton-Seed Crush- 

 ers' Association composed of those interested or dealing in 

 cotton-seed products, holds annual sessions and sets standards 

 and regulations for these commodities. The following is the 

 last standard classification adopted by this association for cotton- 

 seed meal. 



Choice Cotton-Seed Meal must be finely ground, perfectly sound 

 and sweet in odor, yellow, free from excess of lint, and by 

 analysis must contain 8 per cent, of ammonia, or 49 per cent, of 

 combined protein and fat. 



Prime Cotton-Seed Meal must be finely ground, of sweet odor, 

 reasonably bright in color, yellow, not brown or reddish, free 

 from lint, and by analysis must contain at least 7^/2 per cent, of 

 ammonia, or 46 per cent, of combined protein and fat. 



Good Cotton-Seed Meal must be finely ground, of sweet odor, 

 reasonably bright in color, and by analysis must contain at least 

 7 per cent, of ammonia, or 43 per cent, of combined protein 

 and fat. 



Chemical Classification. The writer uses the following classi- 

 fication. The protein equivalents of the ammonia standards are 

 taken instead of combining the protein and fat. The color, odor 

 and fat contents are not considered because the purchaser can 

 easily distinguish a meal that is off in color and odor and most 

 of the meal contains enough fat for feeding purposes. 



Choice Cotton-Seed Meal calls for 8 per cent, ammonia, which 

 is equivalent to 41.15 per cent, of protein; that is, all meals car- 

 rying 41.15 per cent, protein or over are called choice. 



Prime Cotton-Seed Meals are those carrying 7.5 per cent, am- 

 monia, which is equivalent to 38.5 per cent, protein. Hence 

 all meals between 38.5 and 41.15 per cent, protein are prime. 



Good Cotton-Seed Meal carries 7 per cent, ammonia, which is 



