1 . 
2. 
3. 
4. 
5. 
6 . 
S. 
9. 
10. 
11 . 
12. 
13. 
14. 
15. 
16. 
17. 
18. 
19. 
20 . 
21 . 
22 . 
23. 
24. 
25, 
26, 
27, 
28, 
29 
48 
RAW Vv'ATER. 
FEBRUARY. 
Day of month. 
Bacteria 
per c. c. 
0.1 c. c. 
2,500 
2, 900 - 
2,900 - 
3. 100 
2,900 
1. 100 - 
1,000 
3, 200 - 
3, 900 
3, 650 
850 
1, 400 - 
2, 550 
7, 300 
9,000 
16, 500 
11,250 
7.250 
11,250 - 
7, 750 — 
6, 750 
4.250 1 
4, 100 I 
Average 
5.006 
B . coli in— F ermentation in lactose broth. 
1 c. c. 10 c. c. 0.1 c. c. 
10 
c. c. 
+ 
+ 1 
- 
+ ' 
-L 
+ 
— i 
+ 
+ 
+ 
- 
- 
+ 
+ 
- 
- 
+ 
+ 
- 
- 
4- 
+ 
- 
- 
+ 
+ 1 
- 
+ , 
+ 
+ ; 
- 
+ 
+ 
+ 
- 
- 
4- 
+ 
- 
- 
+ 
+ 
- 
- 
+ 
