1911.] 



PUBLIC DOCUMENT — No. 31. 



105 



Weighing Cows. — Each cow was weighed for three con- 

 secutive days at the beginning and end of the period proper, 

 before watering and feeding in the afternoon. These weights 

 were also taken twice during the intervening time. 



Sampling Feeds. — Samples of hay and silage were taken at 

 the beginning of the period, and every two weeks thereafter. 

 In case of the hay, forkfuls were taken here and there from 

 the entire amount to l)c fed for the day, run through a feed 

 cutter, subsampled, the final sample brought to the laboratory 

 in glass-stoppered bottles, dry-matter determinations made at 

 once and the sample saved for a composite. The silage was 

 similarly sampled, excepting that it was not run through the 

 cutter. The grain was sampled daily, preserved in glass- 

 stoppered bottles, and at the end of the period analyzed. 



Sampling Milk. — The milk of each cow ^vas sampled for 

 five consecutive days in each week by the usual method, and the 

 composite tested for fat. total solids, nitrogen and ash. 



Dates of the Experiment. 



Preliminary Period. 



Period Proper. 



I., 

 II.. 



Low protein. 

 High protein. 



February 10 through 



April 27. 

 February 10 through 



April 27. 



Blanche, Daisy, Fancy, 

 Gladys, Maude, May. 



Betty, Dora, May Rio, 

 Molly, Red II., Samantha. 



Average Daily liations consumed by the Two Herds {Pounds). 



Preliminary Period. 



Period Proper. 



1., 

 II.. 



Ix)w protein. 

 High protein. 



12.6 

 13 



22.2 

 21.0 



3.4 

 3.7 



3.3 

 1.2 



2.2 



