EXERCISE 84 (Continued) 



5. Crude fiber. Remove the seed coat from a bean or kernel of corn. Examine the outer layer of a 

 mature corn stalk. This hard, woody material is principally crude fiber. Cotton and flax are examples 

 of crude fiber that may be readily examined. 



6. Fats. Fats are extracted with ether. Cover a little cottonseed meal, Unseed meal, or corn meal 

 with ether ; stir about a minute and pour off the ether. Set aside until the ether evaporates, as indicated 

 by the absence of the odor of ether. The substance remaining is fat. (Gasoline may be used if ether is 

 not obtainable.) Test wheat bran, castor beans, peanuts, cottonseed, flaxseed, and sunflower seed for fats. 



Questions. Mention two plant products from which starch is obtained for commercial purposes. 

 Mention two plant products from which oil is obtained for commercial use. From your examination of 

 crude fiber would you consider it a very valuable part of the plant ? Is it easily digested ? 



References. Waters, H. J. Essentials of Agriculture, p. 25. Ginn and Company. Henry and Morrison. 

 Feeds and Feeding Abridged, pp. n-16. The Henry Morrison Company. Jordan, W. H. The Feeding of 

 Animals, pp. 7-9. The Macmillan Company. . 



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