Within a few subsequent pages are briefly recorded the re.sults of 

 more recent observations with cotton seed meal and old process lin- 

 seed meal when fed as substitutes for gluten meal (Chicago var.) in 

 an otherwise corresponding daily diet of milch cov?s. The experi- 

 ment was instituted, as has been intimated above, mainly for the 

 purpose of comparing the effect of cotton seed meal and old process 

 linseed meal with that of gluten meal (Chicago var.) on the cost of 

 the feed consumed and on the quantity and the quality of the milk pro- 

 duced, when fed each in equal weight as an ingredient of an otherwise 

 corresponding daily diet of milch cows. 



1. HisTOUY OF Cows. 



Nine cows, grades of various descriptions and of different milking 

 periods, served in the trial. 



The cows thus far used in all our feeding experiments for the 

 production of milk have been grades of more or less uncertain 

 parentage. We secure them usually on the condition that they are 

 new milch cows, from one to two weeks after calving when bought, 

 and of fair milking quality, yielding from 15 to 16 quarts per day at 

 this time. They serve usually in the trials until their daily yield of 

 milk becomes unprofitable, from 5 to G quarts, when they are replaced 

 by new milch cows. 



2. Description of Fodder Articles. 



The daily fodder rations contained per head throughout the entire 

 experiment as fine or grain feed, three pounds of com meal and 



