66 
FILTERED WATER— Continued. 
MAY, 1908. 
Day oi month. 
Bacteria 
per c. c. 
B. coli in— 
r ermentation in lactose broth. 
0.1 c. e. 
1 c. c. 
10 c. c. 
0.1 c. c. 1 
1 1 c. C. j 
10 c. c. 
1 
145 
i 
1 
9 
1 
3 
1 
i 
i 1 
i 
4 
1 
1 
i 
i 
6 
1 
1 
1 
S 
80 
- j 
9 
70 
1 
10 
11 
20 
_ 1 
1 
i 
_ 
12 
50 
1 
i 
1 ; 
13 
70 
1 
_ 
14 
55 
15.,... 
45 
16 
3-5 
_ 
17 
1 
IS 
35 
- i 
i 
19 
30 
_ i 
20 
24 
21 
27 
~ i 
^ 
40 
23 
30 
_ 
2o 
60 
_ 
_ 
26 
165 
_ 
_ 
97 
35 
28 
49 
_ 
29... . 
50 
_ 
30. . . 
40 
_ 
31 
Average 
56 
i 
i 
