1(J AGRICULTURAL EXPERIMENT STATION. [Jan. 



the time at twenty-five dollars })cr ton of two thousand 

 pounds. The commercial value of its fertilizing constitu- 

 ents, nitrogen, phosphoric acid and potash exceeded those 

 contained in the corn meal from six to seven dollars per ton, 

 making a difierence at the time of twelve dollars in the 7iel 

 cost of both kinds of fine or grain feed. A successful 

 attempt at using " maize feed " in place of corn meal in the 

 daily diet of milch cows could not fail to secure a material 

 reduction in the net cost of the grain feed portion of the 

 daily fodder ration. 



From six to eight cows, grades of various descriptions 

 and of difterent milking periods, were selected for the trial. 

 Some of these animals served a shorter period than others, 

 on account of a too far advanced stage of lactation. Our 

 record on this occasion is confined to four cows, wdiich took 

 part, with but one exception, from the beginning of obser- 

 vation. 



1. History of Cows. 



2. Description of Fodder Articles. 



The grain feed portion of the daily diet consisted at differ- 

 ent times either of corn meal, wheat bran and maize feed 

 (Ciiicago), or of maize feed, wheat bran and cotton-seed meal. 



The mechanical condition of these various feed stuifs was 

 good, and their chemical composition in every case a fair 

 one, as may be seen from an abstract of the average result 

 of our analyses. The Chicago maize feed was of a some- 

 what coarser texture than either of the other articles. It 

 represents the dried grain residue of tiu! maize kernels after 

 the princi})al part of its starchy material has been removed, 

 and contains more or less of the Ijrokcn-up skins of the 

 kernels. 



