1 
2 . 
3. 
4, 
5. 
6 , 
7. 
8 . 
9. 
10 , 
11 
12 
13. 
14. 
15. 
16. 
17, 
18. 
19. 
20 . 
21 . 
22 . 
23. 
24. 
25. 
26. 
27. 
28. 
29. 
30. 
31. 
61 
FILTERED WATER. 
DECEMBER, 1907. 
B. coli in — 
'Day of month. 
Bacteria 
per c. c. 
0.1c. c. 1 
150 
145 
200 
170 
130 
140 
200 
165 
180 
160 
135 
160 
330 
210 
250 
515 
950 
900 
950 
875 
Average 
525 
775 
875 
775 
625 
419 
c. c. 
I 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
10 c. c. 
Fermentation in lactose broth. 
0.1c. c. I 1 c. c. 10 c. c 
