DAIHY FARMING DAIRYING. 931 



of tbe two COWS was mixed, the skim milk contained 0.25 to 0.27 per 

 cent of fat. From various exi)eriiiieiits at tlie station in creaming milk 

 by cold deep setting the indications are that the i)ercentage of fat in 

 the skim milk increases when the temperature rises above 45°, and that 

 the fat is less fully recovered when the setting is delayed. 



A cheap form of creamer is briefly described. 



College herd {Michigan Sta. R2)t. 1895^ pp. 125-131). — This is ?L record 

 for nearly a year and a half of 17 cows in the station herd, showing the 

 yield of milk and fat and the average percentage of fat for each cow by 

 months. 



"These tables reveal the fact that no mature cow is retained \\\ the herd whose 

 annual milk record is less than G,000 lbs. oi' which doei not yield at least 3r0 lbs. of 

 fat jier year. In her lirst period of lactation, College Ilouwtje yielded but 239.45 

 lbs. of fat but has already yielded at the close of this record 219.31 pounds, although 

 her milking period is still incomplete." 



Kemarks are made upon the selection of young lieifers for dairy 

 stock, keeping of herd records, etc. 



Brief mention is made of some feeding experiments whicli have been 

 conducted at the station. 



"There are several conclusion's that may be safely drawn from our feeding trials 

 which do not need further trials for contirmatiou. They are given here without 

 details. 



"(1) Gluten meal and gluten feed are very palatable to cows and may be used eco- 

 nomically in compounding rations for them. They tend to produce a soft, sticky 

 butter, however, and further tend to so affect the cream as to leave a high percentage 

 of fat in the buttermilk. 



"(2) Lathyrus silrestris, either as green forage, hay or silage, is not liked by cows, 

 either as a principal or subordinate part of the ration. Repeated trials have shown 

 that cows will not eat it in sufficient quantities to make it an economically valuable 

 forage plant. 



"(3) Millet can be safeiy ]tut into a silo directly from the field. A small silo of 

 millet silage kept w'ithout waste and was eaten with avidity by the cows."' 



The effect of tuberculin injections upon the milk of healthy 

 and diseased cows, E. A. de Schweinitz ( U. S. Dept. Afjr., Biirean 

 of Animal Industry Bid. 13, pp. 15-27, charts 7). — This is a continuation 

 of observations on this subject reported in a previous bulletin.' Tlie 

 observations were made with varying doses of tuberculin on a healthy 

 cow, 2 diseased animals, and a lot of 8 cows whicli had been condemned 

 by the tuberculin test and were to be killed. Data are given for each 

 animal, showing the composition of the milk on different days and 

 the temperatures before and after injection; and charts are given 

 showing the variation in temperature of large numbers of animals after 

 inoculation. 



"There was practically no variation in the fat of the milk from the healthy cows 

 after the tuberculin injection. This agrees with our iirst experiments, and also 

 with some tests made by Dr. Law.- Neither was there any alteration when large 



'U. S. r)e])t. Agr., Bureau of Animal Industry Bui. 7 (E. S. R., fi, p. 84.'j). 

 ^New York Cornell Station Bui. 82 (E. 8. R., 6, p. 1023). 



