18 
BULLETIN 919, U. S. DEPARTMENT OE AGRICULTURE. 
Table 10. — Monthly distribution of milk prices, milk sold and used, feed cost, 
and labor required— Continued. 
YEAR 191/-1918. 
Income 
per 100 
pounds 
of milk. 
Income 
from 
milk 
sold 
and 
used. 
Milk 
sold 
and 
used. 
Feed, 
pasture, 
and 
bedding 
cost. 
Feed, 
pasture, 
and 
bedding 
cost 
minus 
manure 
credit. 
Human labor. 
Horse labor. 
Month and season. 
Per 100 
pounds 
of milk. 
Per 
cow. 
Per 100 
pounds 
of milk. 
Per 
cow. 
S2. 21 
Per cent. 
in n 
Per cent. 
11.8 
11.8 
10.4 
8.8 
8.9 
7.8 
Per cent. 
7.5 
4.7 
5.2 
5.3 
4.8 
6.0 
Per cent. 
7.3 
4.5 
5.0 
5.1 
4.6 
5.8 
Hours. 
1.2 
1.2 
1.3 
1.4 
1.4 
1.6 
Hours. 
10.6 
10.3 
10.2 
9.8 
9.1 
9.1 
Hours. 
0.007 
.009 
.012 
.005 
.006 
.033 
Hours. 
0.06 
June 
2.09 i 9.4 
2. 28 1 9.1 
2. 78 9. 4 
2. 66 9.1 
2.81 | 8.5 
.08 
July 
.10 
.03 
September 
.04 
October 
.19 
Summer 
2.43 i 55.5 | 59.5 
33.5 
32.3 
1.3 
9.8 
.011 
.08 
Year 
2.61 inn n 1 inn.nl inn n 1 qo q 
1.6 
9.7 
.010 
.06 
YEAR 1919-1920. 
November 
3.19 
7.0 
6.3 
10.6 
9.9 
1.9 
9.7 
.009 
.05 
December 
3.28 
7.4 
6.5 
11.9 
11.2 
2.0 
11.1 
.004 
.02 
January 
3.65 
8.3 
6.5 
12.0 
11.4 
2.0 
10.8 
.015 
.08 
February 
3.33 
7.0 
6.0 
11.2 
10.5 
1.9 
9.5 
.011 
.05 
March 
2.82 
7.3 
7.4 
11.9 
11.2 
1.7 
11.0 
.012 
.07 
April 
2.47 
7.5 
8.6 
8.8 
8.1 
1.4 
10.6 
.009 
.06 
Winter 
3.08 
44.5 
41.3 
66.4 
62.3 
1.8 
10.4 
.010 
.06 
Mav 
2.35 
9.3 
11.4 
5.1 
5.0 
1.1 
11.1 
.003 
.03 
June 
2.43 
9.6 
11.3 
5.1 
5.0 
1.2 
11.3 
.045 
.43 
July 
2.62 
9.9 
10.8 
4.6 
4.5 
1.3 
11.7 
.007 
.06 
August 
2.94 
9.7 
9.4 
5.1 
5.0 
1.4 
10.4 
.022 
.17 
3.04 
8.8 
8.3 
5.7 
5.6 
1.4 
9.0 
.019 
.13 
October 
3.12 
8.2 
7.5 
8.0 
7.9 
1.6 
9.5 
.003 
.02 
Summer 
2.71 
55.5 
58.7 
33.6 
33.0 
1.3 
10.5 
.017 
.14 
Year 
2.86 
100.0 
100.0 
100.0 
95.3 
1.5 
10.5 
.014 
.10 
The number of hours required to care for a cow does not differ 
materially in summer and winter, but the number of hours required 
to produce 100 pounds of milk shows a marked increase from Novem- 
ber to March, inclusive. This season corresponds quite closely to 
the months of intensive winter feeding, when the cows are kept in the 
barns or yards during the nights ; it also corresponds to the months 
in which the smallest volume of milk is produced, and this fact exerts 
a great influence over the amount of labor required for producing 100 
pounds of milk. This is more fully substantiated by the fact that 
during the months of May, June, and July we find the lowest time 
requirements for producing 100 pounds of milk because of the higher 
percentage of milk produced per month. 
The small amount of horse labor was due to the use of motor trucks 
for collecting the milk and hauling it to market. 
During the winter horses were used at some farms to haul the milk 
from the milk house to the road. In summer they were used for driv- 
ing cows to and from the pasture; however, during July, August, 
and September, when the horses are hitched to the harvest wagon, 
