EXERCISE 37. TEST FOR IMPURITIES IN COTTONSEED MEAL 



Place a teaspoonful of the meal in a tumbler and pour over it 1^ to 2 oz. 

 of hot water. Stir the mass until it is thoroughly wet and all the particles 

 are floating. Allow it to subside for from 5 to 10 seconds and pour off. If a 

 large amount of fine, dark-brown sediment has settled in this time (a sediment 

 noticeably heavier than the fine mustard-yellow meal and one which upon 

 repeated treatments with boiling hot water keep settling out) the goods are 

 a feed meal, i. e,, meal containing relatively large quantities of ground hulls. 

 All meals contain small quantities of hulls and show dark specks. If, however,, 

 there is found a large amount of this residue, one which persists in remaining 

 after several washings and decantings, it is surely composed of hulls and the 

 goods are a feed meal or an adulterated cottonseed meal. 



The results of the test are very striking when a feed meal is compared 

 with a meal of known purity, which is similarly tested at the same time (Ver- 

 mont station). 



Question 1: How many pounds of cottonseed meal, hulls and oil are ob- 

 tained, on the average, from a ton of cottonseed in modern mills? 



Question 2: What are the relative values of cottonseed meal and In- 

 dian corn for feeding farm animals? 



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