1891.] PUBLIC DOCUMENT — No. 33. 15 



These articles were at any time at our disposal in our 

 local market ; all of them could claim a fair reputation for 

 milk production. 



During the past year we have changed (he object of our 

 feeding experiments with milch cows. Having made our- 

 selves, as far as practicable, familiar with the feeding effect 

 and general economical value of our current coarse home- 

 raised fodder articles, it was decided to compare the feeding 

 value of our prominent concentrated fodder articles (grains, 

 brans, oilcakes, gluten meal, starch feed, etc.) with each 

 other, under otherwise corresponding circumstances. 



Some experiments with the two kinds of linseed meal 

 (old and new process) are described within a few subsequent 

 pages. 



2. Feeding Experiments with Milch Cows. 



Old-process linseed meal vs. new-process linseed meal, Dec. 

 11, 1889-July 2, 1890. 



The feeding experiments subsequently described were 

 instituted chiefly for the purpose of comparing the effect 

 of new-process linseed meal with that of old-process lin- 

 seed meal, on the quantity and quality of milk produced, 

 and on the cost of feed consumed, when fed in equal weights 

 as an ingredient of an otherwise corresponding daily diet 

 of milch cows. This inquiry into the respective merits of 

 both kinds of linseed meal for dairy purposes has been under- 

 taken in response to frequent inquiries regarding that point 

 on the part of dairymen in our State. The old-process lin- 

 seed meal is sold, in our local markets, at '$27 per ton 

 of 2,000 pounds, and the new-process linseed meal of the 

 Cleveland Linseed Oil Company at $26 for the same weight. 

 The first-named article is obtained when the seed is sub- 

 jected to the action of a powerful press to secure its oil ; 

 while the latter is produced by the aid of a new process, 

 owned by the Cleveland company. The new process favors 

 a more thorough abstraction of the oil, and involves, it is 

 stated, a boiling of the seeds. The difference in the treat- 

 ment of the seed, for the separation of the oil, explains one 

 of the most characteristic differences in the composition of 

 both kinds of linseed meal ; for old-process linseed meal 



