1 . 
2 . 
3. 
4. 
5. 
6 . 
8 . 
9. 
10 . 
11 . 
12 . 
13. 
14. 
15. 
16. 
17. 
18. 
19. 
20 . 
21 . 
22 . 
23, 
24. 
25. 
26. 
27, 
28, 
29. 
30, 
31, 
68 
FILTERED WATER— Continued. 
JULY, 1908. 
Day of montti. 
Bacteria 
per c. c. 
B. coli in — 
0.1c. c. 1 c. c. lOc.c 
44 
24 
F ennentation in lactose broth. 
0.1 c. c. 1 c. c. lOc.c. 
I 
90 
50 
71 
42 
73 
31 
90 
120 
32 
45 
42 
44 
260 
50 
Average. 
56 
