49 BULLETIN 642, U. §. DEPARTMENT OF AGRICULTURE. 
duction of the essential factors was noted on farm 27, where the 
average count was reduced from 186,995 to 3,606 bacteria per cubic 
centimeter. On farm 178 the average number of bacteria in the 
cream was reduced from 49,181 to 3,025 per cubic centimeter; all the 
separator parts were sterilized in the simple steam sterilizer and held 
in it until ready for use. 
TABLE 18.—Bacteria per cubic centimeter in daily samples of milk (5 farms) and 
eream (1 farm), showing effect of using small-top pails and sterilized utensils. 
! 
Open pails, uten- | Small-top ails Open pails, uten-| Small-top pails 
Farm sils not sterilized utensils sterilized Farm sils not sterilized utensils sterilized 
No. (3 weeks, July 23 (3 weeks, Aug. 15 No. (3 weeks, July 23 (3 weeks, Aug. 15 
to Aug. 12). to Sept. 2). to Aug. 12). to Sept. 2). 
1 233, 000 3, 500 29 80, 000 1, 200 
81, 000 2, 700 109, 000 600 
103, 000 51, 300 65, 000 1, 700 
176, 000 8, 500 8, 000 = 1,100 
67, 000 3, 200 16, 200 900 
220, 000 4,100 80, 000 3, 150 
17, 300 4, 500 8, 500 2, 800 
139, 000 10, 000 25, 300 1,300 
15, 200 4,100 302, 000 1, 700 
16, 900 5, 000 19, 000 1, 750 
28, 500 30, 000 400, 000 1,300 
49, 000 10, 000 30, 000 2, 200 
212, 000 7, 600 44, 800 1,100 
49, 000 9, 000 6, 000 7, 000 
88, 000 10, 800 140, 000 2,300 
32, 300 5, 900 11, 000 1,300 
600, 000 100, 000 
12, 600 10, 600 
71, 000 9, 400 
Average of 19sam- | Average of 16 sam- Average of 19 sam- | Average of 16 sam- 
ples, 116,384. ples, 10, 637. ples, 77,095. _ ples, 1,962. 
20 10, 300 3, 100 43 4, 200 1,100 
143, 000 800 70, 000 900 
7, 000 5, 400 320, 000 2, 000 
5, 800 2, 900 64, 000 1, 700 
12, 000 700 6, 600 2, 700 
1, 200 3, 800 2, 000 5, 600 
5, 300 3, 300 700 by 
17, 400 4, 500 2, 600 5, 600 
3, 300 2, 700 6, 000 2, 550 
3, 200 2, 550 6, 000 2, 050 
5, 400 2, 050 16, 000 2, 200 
6, 200 26, 100 30, 000 1, 700 
20, 000 2, 800 64, 000 1, 600 
9, 700 2,700 11, 400 1,100 
5, 000 800 3, 600 1, 000 
6, 700 10, 300 4, 600 900 
5, 200 4,000 
4, 200 2,800 
Average.of 18 sam- | Average of 16 sam- Average of 18sam- | Average of 16 sam- 
ples, 15,050. ples, 4,656. ples, 34,861. ples, 2,150. 
a ESS Average of 93 sam- | Average of 80 sam- 
27 420, 000 2,300 ples, 87,391. ples, 4,602. 
134, 000 1, 600 SSS SSS SS SS 
91, 000 3, 100 178 12, 000 2,100 
47, 000 2,400 (cream). 6, 000 100 
155, 000 1, 400 52, 000 2, 200 
93, 000 4, 000 15, 000 1,300 
77, 000 1, 900 2, 400 4, 200 
188, 000 1, 800 15, 500 2, 250 
118, 000 1, 800 17, 400 3,400 
102, 000 24, 000 3, 200 3, 700 
44, 200 2, 300 7, 200 10, 000 
406, 000 1, 500 24,700 750 
140, 000 2, 800 35, 700 2,000 
1, 140, 000 2, 500 94, 000 3, 600 
92, 000 2,000 300, 000 2, 600 
34, 400 2,300 8, 000 2, 400 
13, 300 173, 000 3,300 
105, 000 20, 800 4, 500 
153, 000 a SSS SSS 
Average of 16 sam- | Average of 16 sam- 
| Average of 19 sam- | Average of 16 sam- ples, 49,181. ples, 3,025. 
| ples, 186,995. ples, 3,606. 
| 
