l82 MAINS AGRICULTURAL EXPERIMENT STATION. 1908. 



apparently showing that sufficient attention was not given in the 

 manufacture of the goods to prevent an excess of acid accumu- 

 lating. A feed containing such amounts of free mineral acids 

 as these goods carried would be apt to be destructive to the 

 teeth and harmful to the digestive apparatus of the animals. 

 The coloring matter used is apparently not one of those that are 

 allowed by the U. S. Board of Food and Drug Inspection. It is 

 apparently free from arsenic and is not a particularly danger- 

 ous material. There seems, however, to be nothing gained by 

 its addition to the goods. Its use is to be deprecated and is 

 contrary to the National Food and Drug Act. 



Distillers Grains. 

 Analyses pages 166 and 167. 

 In composition, dried distillers grains resemble the gluten 

 feeds. They are made chiefly from corn from which the starch 

 is removed by fermentation. They are more bulky than the 

 gluten feeds and when of good quality run higher in protein. 

 A feeding test with distillers grains was reported in bulletin 

 92 of this Station. It will be noted than in the analyses the 

 goods fall somewhat below their guaranty in protein. The Ajax 

 Flakes carry on the average about 32 per cent protein and Keek's 

 Corn Distillers grain carry a scant 29 per cent protein. In one 

 instance both Ajax Flakes and Fourex grains were above their 

 guaranteed percentage of protein. Corn Protogran was appar- 

 ently not sold very much in the State. The inspector did not 

 find it at all. The three samples sent in by dealers showed it 

 to carry about 25 per cent protein. It was sold to them under 

 different guaranties, but the guaranties were changed to accord 

 with fact. All of these distillers grains with the exception of 

 the Corn Protogran, carried practically as much total fat and 

 protein as the guaranties called for; while for the most part 

 they were somewhat below in protein, they over-ran in fat. As 

 was to be expected no weed seeds were found in any of the 

 samples of distillers grains. 



Brewers Grains. 



Analyses page 167. 



Rather more dried brewers grains were apparently used in 



Maine than in preceding years. It will be noted that these 



goods for the most part carried about 25 per cent protein. The 



