1892.] PUBLIC DOCUMENT — No. 33. 95 



ficient, without increasing in an objectionable degree the 

 bulk or volume of the daily fodder ration. They tend 

 thereby to increase, as a rule, materially, the nutritive value 

 of our home-raised coarse fodder articles. Farmers that do 

 not raise a liberal proportion of clover-like fodder plants 

 are, in a particular degree, in need of concentrated commer- 

 cial feed stuffs rich in nitrogenous food constituents to 

 turn the excess of the non-nitrogenous food constituents, 

 which most of our current home-raised coarse fodder articles 

 contain, to the best possible account. 



As we buy, in the majority of cases, the concentrated 

 commercial feed stuffs on account of their large proportion 

 of nitrogen-containing food constituents, it becomes of 

 special interest to know at what cost a given quantity of 

 digestible nitrogen-containing food constituents can be 

 bought in the form of different feed stuffs equally well 

 adapted under existing circumstances. A change in the 

 market cost of one and the same commercial feed stuff 

 affects the cost of the nitrogen-containing food constituent, 

 in particular as its supply is more limited than that of the 

 non-nitrogenous food constituents, which our home-raised 

 coarse fodder articles contain, as a rule, in abundance. 



The subsequent tabular statement assumes a constant cost 

 of digestible non-nitrogenous food constituents, — sugar, 

 starch, fat, etc., — and shows thereby the variations in the 

 cost of digestible nitrogen-containing food constituents in 

 case of some prominent concentrated commercial feed stuffs 

 in our local market. 



The majority of the analyses stated is made of fodder 

 articles which have been used either during the past year in 

 connection with some of our feeding experiments, or have 

 been raised upon the grounds of the station. Some articles 

 sent on by outside parties are added, on account of the 

 special interest they may present to others. 



