1887.] PUBLIC DOCUMENT — No. 33. 103 



Supplemented by some phosphoric acid and potash it may 

 serve in place of barnyard manure. The average barnyard 

 manure (partly rotten) is usually stated to contain 0.5 per cent, 

 of nitrogen, 0.26 per cent, of phosphoric acid and 0.6 per cent, 

 of potassium oxide. 



Rotten BreiL'ers' Grain. 



[Sent on for examination from Lawrence, Mass.] 



Per cent. 



Moisture at 100° C, . 78.77 



Dry vegetable matter, 21.23 



Nitrogen, 0.72 



Calcium oxide, 0.26 



Magnesium oxide, 0.15 



Phosphoric acid, 43 



Potassium oxide, 0.04 



Insoluble matter, • . . . . 0.59 



Valuation per 2,000 lbs., $2 71 



The general character of the above-mentioned substance 

 resembles that of barnyard manure. It contains more nitrogen 

 and phosphoric acid, and less potash than the average barnyard 

 manure. By increasing the latter ingredients to one-half a per 

 cent, a fair substitute for barnyard manure may be obtained. 



Glucose Refuse {dry). 



[Sent on for examination.] 



Per cent. 



Moisture at 100° C, 8.10 



Dry vegetable matter, 91.80 



Nitrogen, 2.62 



Phosphoric acid, 0.29 



Magnesium oxide, 0.02 



Calcium oxide, 0.18 



Sodium oxide, 0.12 



Potassium oxide, 0.15 



Insoluble matter, 0.07 



Valuation per 2,000 lbs., $9 33 



This material consists mainly of the skins of corn ; it is evi- 

 dently the insoluble residual matter left behind after the con- 

 version of the starch into glucose syrup. The manurial value 

 of the article rests mainly on the amount of nitrogen it contains 



