42 

 Wheat Mixed Feed. 



1907. 1908. 



No. vSamples, 97 133 



Protein (per cent), 16.35 16.19 



4.65 



$31.12 



Wheat Bran. 



1908. 



52 



15.47 



4.53 



$29.40 



Flour Middlings. An attempt to classify and group wheat 

 by-products is at best unsatisfactory; this is especially true 

 of middlings. While Red Dog flour is readily distinguished, 

 there seems to be no sharp line of demarkation between flour and 

 standard middlings. The digestibility of middlings depends to 

 a certain extent upon the relative proportions of flour and bran 

 present. Middlings which <iDntain considerable flour will be 

 more digestible than one made up largely of finely ground bran. 

 For this reason the purchaser should not be misled by the name 

 in purchasing this product but should make sure that it is a gen- 

 uine article. A good grade of flour middlings forms an excellent 

 source of digestible carbohydrates (starchy matter) as well as 

 protein. 



Standard Middlings as found were of good average quality. 

 Purchasers are cautioned against purchasing standard middlings 

 containing ground screenings. Such an admixture detracts from 

 the value of the product. The addition of screenings can be 

 readily detected by the color of the material ; middlings thus 

 adulterated show a large number of dark specks due to the ground 

 weed-seed present and have a darker shade of color than the 

 straight product. 



Wheat mixed feed is a mixture of wheat bran and wheat mid- 

 dlings. The proportion varies with the brand but the feed should 

 contain theoretically all of the by-products of the wheat berry in 

 the proportions remaining after the flour has been separated. In 

 purchasing, preference should be given to those brands which con- 



