10 



BULLETIN" 642, U. S. DEPARTMENT OF AGRICULTURE. 



pies from the small-top pail from 2,100 to 60,000 per cubic centi- 

 meter. It is quite remarkable that the counts were not higher on 

 account of the dirty condition of cows and barn floor. 



Table 2. — Bacteria per cubic centimeter in dual samples of fresh milk produced 

 under conditions described in Experiment No. 2. 



Date. 



Sample 

 No. 



Open 

 pail. 



Small- 

 top pail. 



Date. 



Sample 

 No. 



Open 

 patL 



Small- 

 top pail. 



1915. 



1 

 2 

 3 

 4 

 5 

 6 

 7 

 8 

 9 



10 

 11 

 12 

 13 

 14 

 15 

 16 

 17 

 18 

 19 



20,000 

 40,000 

 25, 000 

 13, 000 

 10, 000 

 12, 000 



5,600 

 10, 500 

 75, 000 



4,500 

 32,000 



5,600 



7,500 

 14, 500 

 16,000 



2,500 

 18,000 



5,600 

 16, 500 



9,000 

 20, 000 

 11,000 

 16,000 



3,500 

 23, 000 



2,400 

 45,000 

 35, 000 



3,200 

 24,000 



2,500 



3,800 



2,600 

 12,500 



2,800 

 14,000 



2,100 



7,200 



1915. 



20 

 21 

 22 

 23 

 24 

 25 

 26 

 27 

 28 

 29 

 30 

 31 

 32 

 33 

 34 

 35 

 36 



5,000 



55,000 

 12,000 

 36,000 



4,100 

 25,000 

 14,000 



9,000 

 11, 000 

 65, 000 

 80, 000 

 40. 000 

 18, 000 

 15,000 

 60,000 

 25, 000 



8,500 



2,500 







30,000 

 9,000 



Sept. 15, p. m 





Sept. 16, a. m 



Sept. 28, a. m 



21,000 



Sept. 16, p. m 



Sept. 28, p. m 



3,400 



Sept. 17, a. m 



Sept. 29, a. m 



60,000 



Sept. 17, p. m 



Sept. 30, a. m 



12,000 



Sept. 18, a. m 



Sept. 30, p. m 



12,000 



Sept. 20, a. m 





9,000 



Sept. 20, p. m 





20,000 



Sept. 21, a. m 



Oct. 2, a. m 



60,000 



Sept. 21, p. m 





55, 000 



Sept. 22, a. m 



Oct. 5, a. m 



Oct. 5, p. m 



Oct. 6, a. m 



9,000 



Sept. 22, p. m 



5,500 



Sept. 23, a. m 



45,000 



Sept. 23, p. m 



Oct. 6, p. m.. 



13,000 



Sept. 24, a. m 





7,000 









Sept. 25, a. m 





22,677 



17,027 















i gggg [ 



Fig. 5. — Bacterial content of milk from sterilized open and small-top pails during 



Experiment No. 2. 



