SPOROGEXES TEST. 
15 
Table 5. — The sporogenes test with milk produced under unknown conditions 
and milk produced wider dirty conditions. 
COMMERCIAL PASTEURIZED MILK. 
Sample 
No. 
Sporogenes test in sets of 10 tubes 
with 10 c. c. 
Posi- 
ofmilk. | tive 
tests. 
Bacterial 
count. 
1 
+ 
1 
3.100 
2 
+ 
+ 
+ 
+ 
4 
3.500 
3 
+ 
_i_ 
+ 
+ 
4 
4,800 
4 
+ 
+ 
+ 
+ 
T 
_l_ 
+ 
+ 
— 
— 
8 
5, 700 
5 
+ 
+ 
+ 
+ 
4 
10, 400 
6 
+ 
+ 
+ 
3 
10, 800 
7 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
10 
12, 400 
8 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
— 
9 
12, 500 
9 
+ 
+ 
+ 
3 
13, 700 
10 
+ 
+ 
+ 
-l_ 
+ 
+ 
+ 
+ 
— 
— 
8 
15, 600 
11 
+ 
+ 
+ 
+ 
+ 
+ 
_l 
+ 
+ 
+ 
10 
15, 800 
12 
+ 
_i- 
+ 
+ 
+ 
+ 
+ 
— 
— 
— 
7 
17, 600 
13 
+ 
+ 
+ 
+ 
+ 
+ 
-f 
+ 
+ 
— 9 
17, 800 
14 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
— 
- 8 
17,800 
15 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
— 
9 
18, 800 
16 
+ 
1 
19, 200 
17 
+ 
+ 
2 
19, 300 
18 
+ 
+ 
2 
20. 200 
19 
+ 
4- 
+ 
+ 
4 
20, 300 
20 
_ 

22, 800 
21 
+ 
' + 
+ 
+ 
+ 
+ 
— 
— 
— 
— 
6 
24, 700 
22 
+ 
+ 
+ 
+ 
+ 
+ 
.+ 
+ 
+ 
— 
9 
25, 200 
23 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
— 
— 
— 
T 
26,900 
24 
+ 
+ 
+ 
+ 
4 
30,600 
25 
+ 
+ 
2 
41,900 
26 
+ 
1 
57.000 
27 
+ 
+ 
+ 
_L 
4 
80, 000 
28 
+ 
+ 
_i_ 
+ 
+ 
5 
345, 000 
MILK PRODUCED UNDER DIRTY CONDITIONS; COWS DIRTY; UTENSILS NOT 
STERILIZED. 
1 
2 
3 
4 
5 
6 
7 
8 
10 
11 
12 
13 
14 
15 
16 
17 
18 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ - 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ ■ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
" + 
+ 
+ 
+ 
+ 
+ 
+ 
_l_ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
7 
3 
6 
2 
6 
3 
7 
1 
2 
9 
6 
2 
7 
7 
3 
6 
10 
6 
33, 000 
46, 000 
101, 000 
106, 000 
107, 000 
112, 000 
118, 000 
129, 000 
245, 000 
320, 000 
750, 000 
1, 340, 000 
1, 810, 000 
2, 900, 000 
11,600,000 
22. 500, 000 
25, 000, 000 
61, 000, 000 
If the sporogenes test is any criterion, it seems evident that the 
pasteurized milk for the most part was not produced under very 
clean conditions. It would appear that in general the conditions of 
production were probably similar to those under which the samples 
represented at the bottom of the table were produced. 
While information as to the production, indicated by the sporogenes 
test, could not be relied upon to do more than suggest probable condi- 
tions, the test might profitably be applied occasionally to milk from 
individual farms in connection with control work. 
