53 
RAW WATER— Continued. 
JULY. 
Day of month. 
Bacteria 
per c. c. 
B. coli in — 
Fermentation in lactose broth. 
0.1 c. c. 
1 c. c. 
10 c. c. 
0.1 c. c. 
1 c. c. 
10 c. c. 
1 
330 
_ 
_ 
+ ! 
_ 
_ 
+ 
2 
415 
_ 
, 
+ 
3 
560 
— 
- 
+ 
- 
- 
+ 
4 
G 
620 
- 
- 
“ 1 
- 
- 
+ 
_ 
_ 
+ 
8 
575 
_ ! 
+ 
- 
- 
+ 
9 
+ 
+ 
+ 
10 
820 
— 1 
- 
+ 
— 
+ 
11 
350 
- 
- 
+ 
- 
- 
+ 
12 
13 
775 
- 
+ 
- 
— 
+ 
14 
375 
- 
+ 
+ 
- 
+ 
+ 
15 
525 
- 
- 
+ 
- 
- 
+ 
16 
400 
- 
- 
+ 
+ 
- 
+ 
17 
800 
- 
- 
- 
- 
+ 
+ 
18 
1,500 
- 
- 
+ 
- 
- 
+ 
19 
1 
20 
350 
- 
- 
- 
- 
- 
— 
21 
+ 
+ 
+ 
22 
750 
— 
- 
+ 
- 
+ 
23 
6,100 
+ 
+ 
+ 
+ 
24 
11,700 
+ 
+ 
+ 
25 .... 
5,000 
+ 
+ 
4- 
+ 
2G.. 
1 
27 
+ 
+ 
+ 
+ 
23 
+ 
+ 
+ 
+ 
29 
+ 
+ 
+ 
+ 
30 
27,000 
+ 
+ 
+ 
+ 
31 
10,000 
+ 
+ 
+ 
+ 
Average 
3,447 
