A STUDY IK THE COST OF PRODUCING MILK. 
15 
than for dairy products on these farms range from $12.27 to $20.33 
per cow and will offset from 25 to 30 per cent of all costs other than 
feed. (See fig. 3.) 
Table IX. — Items of credit other than milk, their annual value per cow, and their relation 
to cost other than feed on the four farms. 
Item. 
Wisconsin 
farm. 
Michigan 
farm. 
Pennsyl- 
vania 
farm. 
North 
Carolina 
farm. 
$10. 47 
4.75 
.11 
.05 
$15. 42 
4.52 
.08 
$10. 27 
1.16 
$10. 64 
4.16 
.26 
.53 
.30 
.84 
1.22 
Total 
15.38 
20.32 
12.27 
16.81 
29.3 
28.7 
24.8 
27.2 
Table IX gives these credits for the four farms, their amount per 
cow, and the relation which they bear to the costs other than feed. 
(See Table I.) 
LOCATION 
OF FARM5 
COST PER COW- DOLLARS 
40 60 80 100 
120 
WIS. 
MICH. 
PENN. 
N.G 
Mi<sc e //ane ous 
Credits o//?er than milh 
Fig. 3. — Relation between the credits other than milk and the total cost of keeping a cow on each of the 
four farms. 
VALUE OF MANURE. 
Manure is the most important credit. This was valued at $15 
per head per year for the Michigan farm and $10 per head on each 
of the others. The value of manure produced by the herd bulls was 
credited to the cows, which accounts for the increase in the figures 
given in Table IX. The higher rate per cow on the Michigan farm 
is attributable to the fact that the cows are fed in the barn all the 
year, and thus more manure is recovered than on the other farms. 
