EXPERIMENT STATION BULLETINS. 353 



of part of the oil by crushing, cooking and hydraulic pressure, or by 

 crushing, heating and the use of solvents from the smaller imperfect 

 grains, weed seeds and other foreign materials having feeding value 

 separated in cleaning the grain. The name of the grain from which the 

 screenings are separated shall be prefixed to "screenings oil feed." 



OAT PRODUCTS. 



Oat Groats are the kernels of the oat berry. 



Oat Hulls are the outer chaffy coverings of the oat grain. 



Oat Middlings are the floury portion of the oat groat obtained in the 

 milling of rolled oats. 



Oat Shorts are the covering of the oat grain lying immediately inside 

 the hull, being a fuzzy material carrying with it considerable portions 

 of the fine floury part of the groat obtained in the milling of rolled oats. 



Clipped Oat Bij-Product is the resultant by-product obtained in the 

 manufacture of clipped oats. It may contain light, chaffy material 

 broken from the ends of the hulls, empty hulls, light, immature oats and 

 dust. It must not contain an excessive amount of oat hulls. 



RICE PRODUCTS. 



Rice Bran is the cuticle beneath the hull. 

 Rice Hulls are the outer chaffy coverings of the rice grain. 

 Rice Polish is the finely powdered material obtained in polishing the 

 kernel. 



WHEAT PRODUCTS. 



Wheat Bran is the coarse outer coatings of the wheat berry obtained 

 in the usual commercial milling process from wheat that has been 

 cleaned and scoured. 



Shorts or Standard Middlings are the fine particles of the outer and 

 inner bran separated from bran and white middlings. 



Wheat White Middlings or White Middlings are that part of the offal 

 of wheat intermediate between shorts or standard middlings and red dog. 



Shipstuff or Wheat Mixed Feed is a mixture of the products other 

 than the flour obtained from the milling of the wheat berry. 



Red Dog is a low grade wheat flour containing the finer particles of 

 bran. 



Wheat Bran with Mill Run Screenings is pure wheat bran plus the 

 screenings which were separated from the wheat used in preparing said 

 bran. 



Wheat Bran ivith Screenings not Exceeding Mill Run is either wheat 

 bran with the whole mill run of screenings or wheat bran with a portion 

 of the mill run of screenings, provided that such portion is not an in- 

 ferior portion thereof. 



Yeast or Vinegar Dried Grains are the properly dried residue from 

 the mixture of cereals, malt and malt sprouts (sometimes cottonseed 

 meal) obtained in the manufacture of yeast or vinegar, and consist of 

 corn or corn and rye from which most of the starch has been extracted, to- 

 gether with malt "added during the manufacturing process to change the 

 starch to sugars, and malt sprouts (sometimes cottonseed meal) added 



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