10 



ponding higher commercial and agricultural value as a valuable 

 source of plant food. A judicious and liberal introduction of a quite 

 numerous class of commercial feed stuffs into the daily fodder supply 

 of the animals kept on the farm is for this reason deservedly recom- 

 mended as a safe and economical way to increase the home production 

 of plant food in the interest of an increase in the fertility of the farm 

 lands. 



As the financial success of a mixed system of farming in particular 

 depends to a considerable degree on the character, the amount and 

 the cost of production of the manurial refuse secured in connection 

 with the special farm industry carried on at the time, it seems to 

 need no farther argument to prove that the relation, which exists 

 between the temporary market cost of the particular feed stuff under 

 consideration, and the market value of the manurial elements, which 

 it contains, deserves a serious consideration, when devising an 

 efficient and at the same time an economical diet. 



The character and commercial value of the manurial refuse obtain- 

 able from any kind of feed stuff, under otherwise corresponding con- 

 ditions, stands in a direct relation to more or less of the different 

 essential fertilizing constituents — phosphoric acid, potash, and in 

 particular, nitrogen — it contains. The commercial value of these 

 three important articles of plant food found frequently in prominent 

 commercial feed stuffs equals in many instances more than one-half of 

 the market cost of the particular fodder ingredient in question. 



The subsequent tabular statement may serve as an illustration of 

 these relations between market cost and fertilizing value of some 

 current reputed fodder articles : 



Their contemporary 

 Name of Feed Stuflf. Market cost Manurial value 



Corn meal. 



Gluten meal, (Chicago) 



Chicago maize feed, 



Buffalo gluten feed, 



Cotton seed meal, 



Linseed meal, (old process) 



Linseed meal, (new process) 



Wheat middlings, 



Wheat bran. 



Dried brewer's grain, 



English hay, (first cut of meadows) 



Rowen, (second cut of meadows) 



Corn fodder, 



