486 
Deerfoot Farm Centrifugal Dairy, 
The gain of the centrifugal process over these other methods 
is shown by the annexed table : — 
Proportional Eesults between — 
Date. 
Centrifugal. 
Ice, 38 hours. 
Holstein 
Method. 
1879— May 
August 1 and September 2 
1880— January 
oooooooooooo 
oooooooooooo 
92- 3 
93- 2 
85-7 
103-2 
96-4 
84-7 
78-1 
84-9 
72-9 
96-3 
96-4 
96-1 
90-6 
912 
87-9 
901 
86- 2 
87- 0 
86-5 
88- 4 
96-9 
94-9 
94-3 
94-0 
100 
91-7 
90-2 
Neither these percentages nor the butter yield indicate a milk 
of such good quality as is used in America, for the best result 
here indicated is, for the year, 26 -5 lbs. of milk to lib. of 
butter, while under the system of setting in vogue in factories 
in America it is 23*18 lbs. of milk for 1 lb. of butter, thus : — 
Years. 
Number of 
Factories 
Reporting. 
Average 
pounds of 
Milk to 
1 pound 
of Butter. 
Extremes. 
1871 
G 
23 05 
22-54 and 25 16 
1872 
4 
22-88 
22-3 and 24-26 
1873 
C 
23-5 
22-36 and 24 4 
The difference between the centrifugal and other methods in 
our tables is in favour of the centrifugal 8'7 per cent, and 10*9 
per cent., respectively, or about the same as Mr. Burnett has 
found, for his few trials have given : — 
Pounds of milk to 1 pound 
of butter. 
For the centrifugal IG to 20 
For the deci)-can setting 17 to 21 
That is, on the mean of these figures, each 100 lbs. of milk in 
the centrifugal process yielded 5-55 lbs. of butter; in the deep- 
can process, 5-26 lbs. of butter — a difference of 0-29 lbs. in 
favour of the centrifugal, or 8-1 per cent. 
In the buttermilk from 100 lbs. fresh milk, in these foreign 
