62 
FILTERED WATER— Continued. 
JANUARY, 1908. 
Day of month. 
Bacteria 
per c. c. 
B. coli in— 
Fermentation in lactose broth. 
0.1c. c. 
1 c. c. 
10 c. c. 
0.1 c. c. 
1 c. c. 
10 c. c. 
1 
2 
+ 
+ 
3 
+ 
4 
425 
+ 
+ 
6 
380 
i 
+ 
200 
8 
230 
+ 
+ 
+ 
+ 
9 
160 
10 
115 
i I . 
+ 
11 
85 
! 
+ 
12 
13. 
130 
1 _ 
+ 
14 
235 
+ 
+ 
+ 
+ 
15 
625 
i 
16 
690 
+ 
+ 
17 . ... 
535 
+ 
+ 
18 
410 
+ 
+ 
19 
20 
520 
+ 
+ 
21 
570 
+ 
+ 
22 ■ .... 
250 
+ 
+ 
+ 
+ 
23 
470 
+ 
+ 
+ 
+ 
24 
305 
+ 
+ 
+ 
25 . 
185 
+ 
+ 
26 
27 
150 
+ 
28 
110 
_ 
+ 
29 
235 
+ 
30 
100 
31 
230 
_ 
Average 
342 
