SPOROGENES TEST. 
17 
Table 6. — Relation of the sporogenes test to milk produced under varying 
conditions. 
MILK PRODUCED IN DIRTY BARN; COWS DIRTY; UTENSILS NOT STERILIZED. 
Sample 
No. 
Sporogenes test in sets of 10 tubes, with 20 c. c. of milk. 
Posi- 
tive 
tests. 
Bacterial 
count. 
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
11 
12 
13 
14 
15 
16 
17 
18 
+ 
4- 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
4- 
+ 
+ 
+ 
4- 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ ' 
+ 
+ 
4- 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
4- 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
7 
6 
2 
9 
5 
9 
3 
4 
10 
4 
3 
10 
7 
6 
7 
10 
6 
33, 000 
46, 000 
101,000 
106, 000 
107, 000 
112. 000 
118,000 
129,000 
245, 000 
320, 000 
750, 000 
] , 340, 000 
1,810,000 
2,900,000 
11, 600, 000 
22, 500, 000 
25, 000, 000 
61,000,000 
SAME AS ABOVE, EXCEPT UTENSILS STERILIZED. 
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
11 
12 
* 13 
14 
15 
16 
17 
18 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
~r 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
-j- 
T 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
4- 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
_i_ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
_1_ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
10 
7 
3 
8 
2 

10 
4 
10 
6 
4 
3 
4 
8 
1 
7 
8 
19, 000 
26, 000 
32, 000 
37, 000 
41,000 
56, 000 
64, 000 
68, 000 
76, 000 
102, 000 
146, 000 
163,000 
168, 000 
182, 000 
186, 000 
242, 000 
245, 000 
560, 000 
BARN FLOOR CLEAN; COWS CLEAN; UTENSILS NOT STERILIZED. 
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
11 
12 
13 
14 
15 
16 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
4- 
+ 
+ 
+ 
+ 
+ 
+ 
- 
- 
1 
3 


1 
8 

1 
1 
1 
4 
5 
1 
2 
1 

1.310,000 
1,170,000 
4, 200, 000 
4, 300, 000 
4, 400, 000 
4, 500, 000 
4,800,000 
7,600,000 
8, 400, 000 
9,200,000 
13, 600. 000 
18.900,000 
23; 900, 000 
32, 800, 000 
38, 000, 000 
64,000,000 
The results of the sporogenes test with milk produced from clean 
cows but with dirty utensils tend to confirm this opinion. It will 
be noted that there was a decided drop in the number of positive 
tubes in the sporogenes test, although occasional samples did. show 
a rather large number. 
