280 
Ceres’ milk may in a measure account for the greater economy of the 
churn with her milk, but suggests to us no explanation of the fact 
that it was more difficult to churn. 
On several occasions equal quantities of milk from the two cows 
were mixed and then treated in the same way as samples of the sep- 
arate milks. Contrary to expectation, no change was shown in the 
quantity of butter from the mixed milk and from the milk churned 
separately. The average per cent. of butter obtained from Ceres’ 
milk was 3.65, from Juno's 3. 39, and from the mixed milk 3.52, 
which happens to be just the average of the two, and in no case did 
the per cent. of butter from the mixed milk vary from the average 
of the two cows more than would be expected from duplicate 
churnings. 
TEST oF JEM. 
The Jersey cow, Jem, calved Feb. 8, and averaged for the last 16 
days of the month 20 Ibs. and 9 ounces of milk per day. At this 
time and until March 14 her ration consisted of what hay she would 
eat, ranging from 20 to 25 Ibs., and 4 quarts (about 5 Ibs.) of corn 
meal per day. Early in march a few tests of her milk were made, 
which gave a high percentage of butter, and confirmed the belief 
that with proper feeding she would make a notable record. With 
this end in view, commencing March 14, her grain ration was 
increased by the addition of ground oats and wheat bran, and after 
a few days a further addition of oil meal. At no time was the feed- 
ing excessive, the aim being to see what could be done with a gener- 
ous ration that might be continued indefinitely without injury to 
the cow. After March 14 till the end of the experiment she received 
each day ten lbs. of a mixed feed, composed of 5 lbs. of ground oats 
and 2 1-2 lbs. each of wheat bran and corn meal, and what hay she 
would eat clean. In addition to the above she received March 17 
and 18, 3 lbs. of oil meal. From the 19th till the 30th, inclusive, she 
received 2 lbs. of oi] meal daily. The oil meal was then discontinued 
till after April 10, the remainder of the ration being as before. 
From this time till the end of the trial, two lbs. of oil meal were 
again added. We may therefore divide the trial into four periods, 
in which the rations were as follows: 
Period I. Preliminary. Extending from March 1 to 18 inclusive. 
Ration previous to March 13, hay and 5 lbs. of corn meal. The hay 
consumed was not weighed every day, but ranged from 20 to 25 Ibs. 
The average is assumed as 22 lbs. March 13, 20 Ibs. hay, 2 lbs. 
crushed oats, 3 1-2 lbs. corn meal, 1 lb. bran; 14th, 21 Ibs. hay, 4 
lbs. crushed oats, 2 lbs. meal, 2 lbs. bran; 15th, 20 Ibs. hay, 5 Ibs. 
crushed oats, 2 1-2 lbs. meal, 2 Mi 2 lbs. bran; 16th, 15 Ibs. hay, 5 
tbs. crushed ‘oats, 2 1-2 lbs. bran, 2 2 1-2 Ibs. corn meal, 1 lb. oil mada 
17th, 19 lbs. hay, 5 lbs. crushed ‘oats, 2 1-2 lbs. meal, 21-2 Ibs. bran, 
3 Ibs. oil meal; 18th, 21 lbs. hay, 5 lbs. crushed oats, 2 1-2 lbs. bran, 
2 1-2 lbs. corn meal, 3 lbs. oil meal. 
Period II, from March 19 to 30 inclusive. Ration, hay and 12 
lbs. of mixed feed, composed of 5 lbs. of ground oats, 2 1-2 Ibs. each 
of wheat bran and corn meal, and 2 Ibs. of oil meal. The hay given 
varied from 5 to 20 Ibs., the average for the whole period being 


