fEObUCTION OP MILK OF LOW BACTERIAL CONTENT. 



21 



- - 





m&-z^$ 





Fig. 12. — Condition of one of the cows during Experiment No. 5. 



Table 6. — Bacteria per cubic centimeter in dual samples of fresh milk produced 

 under conditions described in Experiment No. 5. 



Date. 



Sample 

 No. 



Open 

 pail. 



Small-top 

 pail. 



Date. 



Sample 

 No. 



Open 

 pail. 



Small-top 

 pail. 



1916. 

 Apr. 11, a. m 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



20 



21 



22 



10,600 



4,500 



8,100 



2,400 



13, 900 



6,400 



165, 000 



360, 000 



240,000 



83, 000 



112,000 



65,000 



58, 000 



121, 000 



144, 000 



276, 000 



112, 000 



163, 000 



940, 000 



158, 000 



16, 500 



4,800 



4,300 



4,800 



5,600 



2,500 



10,800 



6,100 



26,900 



105,000 



29,800 



14,600, 



31,300 



19, 700 



18,200 



78, 000 



21, 100 



122,000 



72,000 



79,000 



166,000 



9,600 



3,200 



2,100 



1916. 



23 

 24 

 25 

 26 

 27 

 28 

 29 

 30 

 31 

 32 

 33 

 34 

 35 



19,600 



5,600 



69,000 



9,400 



66,000 



10, 800 



53, 000 



29,000 



15,900 



8,900 



8,100 



16, 100 



3,500 



4,100 



2,600 



65,000 



11, 500 



61, 000 



11,400 



7,500 



Apr. 11, p. m 





3,500 



Apr. 12, a. m 





7,200 



Apr. 12, p. m 





1,900 



Apr. 13, a. m 





17, 700 



Apr.l3,p. m 





1,900 



Apr. 14,a.m 



Apr. 14, p. m 



Apr. 15, a. m 



Apr. 17, a. m 



Apr. 29, a. m 



Apr. 29, p. m 



May 1, p. m 



31, 000 

 3,500 

 7,300 

 6,100 



Apr. 17, p. m 





2,80C 



Apr. 18, a. m 





10, 200 



Apr. 18, p. m 





13, 100 



Apr. 19, a. m 



Apr. 19, p. m 



Apr. 20, a. m. . 



Apr.20,p.m 



Apr. 21, a. m 



Apr. 24, a. m 



May 4, a. m 



May 4, p. m 



May 5, a. m 



May 5, p. m 



May 6, a. m 



36 

 37 

 38 

 39 

 40 

 41 



8,400 



3,100 

 23, 000 



6,600 

 ■10,900 



3,700 



Apr. 24, p. m 



Apr. 25, a. m 







86,212 



24,439 



Apr. 25, p. m 













If the average bacterial counts in the experiment are compared 

 with those in Table 2, a similar experiment, it will be seen that the 

 average count from the small-top pail was 24,439 in one series 

 and 17,027 in the other. The open pail showed a greater variation, 

 being 86,212 in one case and 22,677 in the other. In the last series 

 with the open pail (Table 6) there are a few high counts which 



