590 ANNUAL REPORT OF THE Off. Doc. 



Same grains of malt were present in each case, as would be ex- 

 pected from the conditions of manufacture. 



The composition agrees very well with Jenkins and Wiuton's 

 average : 



Per cent. 



Moisture, 10.2 



A»h, 5.7 



Protein, 23 . 2 



Fiber, 10.7 



Mtrogeu-free extract, 48.5 



Fat, 1.7 



100.00 



The difference in price between Nos. 113 and 117, taken in south- 

 eastern Pennsvlvania, and No. 256, taken in the northwestern corner 

 of the State, is rather striking. 



The value of. this food as a low-priced balancing material is ap- 

 parent. 



OATS AND OAT PRODUCTS. 



Owing to their composition and palatability to domestic animals, 

 oats enter into a great variety of combinations with other grains 

 in the preparation of a great variety of mixed feeds. Less extensively 

 used than wheat and corn for the manufacture of breakfast foods, 

 the various oat-meal preparations for human consumption leave, 

 nevertheless, a large volume of residual material, chiefly oat hulls, for 

 use in the manufacture of cattle foods. Because of the extensive 

 use of oat hulls for this purpose, it is important to secure a clear 

 knowledge of their composition and digestilibity relative to that of 

 the whole grain. 



Considering first the proportion of hull (consisting of the pallets 

 and sometimes the glumes) to the entire grain: 



The writer, working under the direction of Mr. Clifford Richard- 

 son,* determined this proportion for 166 samples of oats sent from 

 all sections of the United States; the average was 30.03 per cent, of 

 the entire grain. For the compact white, black and mixed oats 

 of the north, weighing 38 pounds per struck bushel, the proportion 

 was 29.3 per cent.; for the fluffy, red rust-proof oats of the south, 

 weighing 34.5 pounds per bushel, the proportion was 30.92 per cent. 

 The extreme range in percentage of hull was 20.72 to 44.63 per cent., 

 the grain in the latter case being evidently immature. 



• Bulletin No. », Dlvlalon of Chemistry, U. S. Department of Apiculture. 



