9) INVESTIGATION IN MILK PRODUCTION. 
enough data obtained to show that there was still a ques- 
tion asto thenutrients actually required for food of mainte- 
nance. It was evident then that in a series of experiments in 
milk production, which would be likely to extend over two 
decades, more information ought to be secured as to food 
required for maintenance under conditions obtaining in the 
Northwest. It was not possible with the limited and inade- 
quate facilities accorded the dairy division in securing the 
composition of food stuffs and feces to carry on the work 
from a purely scientific standpoint, nor was it considered 
advisable to do so. The work has therefore been carried on 
from the more practical phase in the belief that in this form 
it would receive more attention from milk producers than 
would be the case if given in more elaborate and technical 
form. 
A mere preliminary trial on a maintenance ration was 
begun on the 31st of October, 1894, when two barren dry 
cows were fed ona daily ration of 10 pounds of timothy hay 
and 3 pounds of ground barley for a period of 81 days. 
Their weight at the beginning of the trial was 1676 pounds, 
and at the close, 1735 pounds, being a gain of 59 pounds, or 
.36 of a pound each per day. The average weight of the 
cows during the experiment was 853 pounds. The dry mat- 
ter and nutrients of the ration per 1,000 pounds were as 
follows: 
TABLE VI,—Giving Food and Nutrients Consumed Daily. 






DIGESTIBLE NUTRIENTS 
Lbs, D. M. = 
Ae Carbohy- Ether 
Protein drates Extract 
Abii eRonE AN 18 Bey Ge ecosaocsedeanadoo0be 10 8.768 318 4.509 18 
Barley, Meat... ssc s-c222<csuoeees 3 2.646 .283 1.792 06 
MO Call iasesncccecssccseese emcee 11.414 601 6.301 .24 
Perot OOOMbS livenw.e1oiites.secssescesesseccens 13.38 .704 7.386 .28 





It is shown by the above table that the ration fed was 
practically the amount prescribed in the Wolff standard, but 
contained .614 of a pound less of carbohydrates and .18 of 
