1892.] PUBLIC DOCUMENT — No. 33. 39 



The above-stated change in the market cost of corn meal, 

 wheat bran, gluten meal and cotton-seed meal affects very 

 materially the cost of the daily diet as compared with that 

 of the preceding year. The daily gra in feed rations which 

 contain gluten meal as an ingredient (II., V., VI., IX.) 

 are 3.32 cents higher than they would have been during the 

 preceding year for the corresponding months ; those which 

 contain cotton-seed meal (I., IV., VII?, VIII.) are 2.85 

 cents higher, and that which contains old-process linseed 

 meal (HI.) is 2.40 cents higher. This increase in cost is 

 largely due to the exceptional high price of corn meal and 

 wheat bran. 



The substitution of gluten meal or of cotton-seed meal by 

 old-process linseed meal, three pounds in each case, causes 

 a reduction of but 0.3 cents in the market cost of the grain 

 feed portion of the daily diet per head. The market cost of 

 the daily grain feed rations used per head during the entire 

 experiment varies only from 11.85 cents to 12.15 cents, a 

 difference of 0.3 cents. Allowing, however, a proper recog- 

 nition of the commercial value of the essential manurial 

 substances, nitrogen, phosphoric acid and potassium oxide, 

 contained in each of the grain feed constituents of the daily 

 fodder rations, we find in our case that the net cost of the 

 cotton-seed meal containing daily grain feed rations (I.) 

 amounts to 7.07 cents, while that of the old-process linseed 

 meal containing daily grain feed rations (II.) is 7.29 cents, 

 and that of gluten meal containing fine feed rations (III.) is 

 8.01 cents, a difference respectively of 0.22 to 0.94 cents per 

 head. This difference in net cost is due to the higher ma- 

 nurial value of cotton-seed meal and of old-process linseed 

 meal as compared with gluten meal at stated market prices. 



The choice of different coarse fodder articles in the daily 

 diet exerts a much greater influence on the market cost of 

 the latter than that of the different kinds of grain feed. The 

 market cost of the coarse fodder portion of the daily diet 

 averages 13.5 cents in case rowen alone (eighteen pounds) 

 serves as coarse feed; it averages 11.5 cents in case forty- 

 four pounds of mixed ensilage and five pounds of rowen 

 are daity fed ; and it amounts to from 4 to 4| cents in 

 case from sixteen to eighteen pounds of corn stover are 



