BACTERIA IN MILK. 79 



bers given show the number of bacteria per c. c. in the milk, and 

 in every instance examinations of the milk took place for several 

 successive days. It will be seen that dairies number i, 7 and 9 

 showed very large numbers of bacteria, and a visit to the farm in 

 each of these instances showed unsanitary conditions and that 

 poor care had been taken of the milk. 



Dairy number 3 was interesting, not on account of the high 

 numbers found, but for the fact that in each of the three examina- 

 tions numerous bacteria were found in the milk, which gave evi- 

 dence of the milk having been too near the pump. An examina- 

 tion of the well water on this farm proved the correctness of our 

 supposition from the fact that it showed a pure culture of the bac- 

 teria we had found in the milk. The farmer was warned about 

 rinsing his cans in this water and seemed surprised that we are 

 able to tell him that his milk had been watered and even more 

 so when we were able to tell him whence the water in question 

 was taken. 



Dairies number 2, 4, 6 and 8, while showing comparatively 

 large numbers as it would appear to the layman, yet may be con- 

 sidered as model dairies in every respect, and from a bacterial 

 point of view the milk has a small bacterial contamination. 



100,000 



600,000 



20,000 



250,000 



