PRODUCTION OF MILK OF LOW BACTERIAL CONTENT. 7 
tion was given to the stable except to remove manure. Dust was 
allowed to accumulate in the barn; consequently at the beginning of 
the first experiment its condition was little if any better than that of 
the average low-grade barn. During the experiment, which extended 
from July 22 to August 14, the manure was removed once a week; as 
a result varying quantities of filth were present on the floor and on 
the cows. A picture of the barn just before the weekly removal of 
the manure is shown in figure 3. It will be noted that the gutter 
was filled with manure and the floor almost entirely covered. 
Figure 4 shows one of the cows at that time. It will be seen that 
Fig. 3.-—Condition of barn during Experiment No. 1. 
the flanks, udder, and teats of the cow were almost entirely covered 
with manure. The general type of milker employed through- 
out the experiments may also be seen in the picture. Under such 
barn conditions and with unsterilized utensils it seemed probable 
that the bacterial ccunts obtained would be as high as those from any 
other dirty barn. It is not intended to intimate that conditions in the 
average barn in this country are as bad as these, but, as stated, for 
the purposes of the experiment it was desired to re the worst pos- 
sible conditions. 
Two cows were milked into open el the other two into small-top 
pails, which were washed clean but not sterilized. The milk was 
then poured into clean, unsterilized cans in the barn, after which it 
was carried to the milk house, where samples were taken immediately 
both night and morning. 
