80 
THE FILTERED RIVER WATER FROM TAPS— Continued. 
Table shoiving fermentation in lactose broth of samples taken from hydrant tap at Wash- 
ington Circle — Continued. 
SEPTEMBER, 1908. 
1 
2 
3 
4 
5 
S 
9 
10 
11 
12 
13 
14 
15 
16 
17 
18 
19 
20 
21 
22 
23 
24 
25 
26 
27 
28 
29 
30 
Day of montli. 
Fermentation in lactose broth. 
0.1 c. e. 
1 c. c. 
10 c. c. 
+ 
<* 
+ 
+ 
+ 
- 
— 
- 
+ 
- ' 
- 
i 
+ 
+ 
+ 
- 
- 
! 
i 
