16 



manurial refuse matter left behind in onr various experiments. Tak- 

 ing for granted that in raising the same kind of animals to the same 

 weights practically the same amount of nitrogen, phosphoric acid, 

 potassa, etc., will be retained in the animal system, it follows that 

 the excess of any one of these constituents of one diet, as compared 

 witli an other one must count in favor of the higher commercial value 

 of tlie manurial residue of that particular diet. 



The subsequent statement of the present market value of the 

 essential fertilizing constituents contained in the entire feed, used in 

 the second feeding experiment (skim-milk and corn meal), as well as 

 those contained in that consumed in our three later feeding exi)eri- 

 ments (skim-milk, corn meal, gluten meal and wheat bran), will show 

 the difference in both instances. 



MANURIAL VALUE OF FEED CON^SUMED. 



The difference in the commercial value of the essential fertilizing 

 elements contained in the feed consumed in both instances, as above 

 specified, amounts to S.S. 6!) in favor of our three recent feeding exper- 

 iments. Calculating this amount for an equal weight of dressed 

 pork produced in both cases it will be found, that this difference con- 

 sists of $G,73 — or .76 cents per })ound of dressed pork sold. 



The higher value of the manure obtained in feeding some gluten 

 meal and wheat bran with skim-milk and corn meal, instead of skim- 

 milk and corn meal alone, amounts to .35 cents more per pound of 

 dressed pork than the higher cost of the feed consumed in tliat con- 

 nection. 



II. Ea-iwr. III. ir. V. Erper. 



Cost off '\ .. pound of clre.ssed pork, 5.51 cts. 5.92 cts. 



Gain in higher value of manure per pound 



of dressed pork obtained, .7G cts. 



Actual cost per pound of dressed pork, 5.51 cts. 5.1fi cts. 



Our three late feeding experiments have thus proved more remuvera- 

 ti.ve than the tioo previous ones. 



The mone}" value of the essential fertilizing elements contained in 

 the entire feed consumed per 1000 pounds of dressed pork produced 

 has varied in our experiments, as shown above, from $22.80 to 

 $29.10. Admitting a loss of one-third of that value in consequence 

 of the growth of the animals, there remains within the reach of the 

 farmer a value, in the manurial refuse obtained, of from $15 to $11). 5. 

 This sum ought to be credited to the profits ; it amounts to from 1.5 

 cents to 1.95 cents per pound of dressed pork produced. As we 

 sold our dressed pork at from 5|^ to 7| cents per pound we received 

 from 1.5 to3.5 cents per pound for labor, housing, etc. 



