35 
Table showing the number of bacteria and presence of colon bacilli found in samples taken 
from the inlet of Dalecarlia Reservoir — Continued. 
NOVEMBER. 
Date. 
Number of bacteria 
per cubic centime- 
ter. 
B. coU in— 
Fermentation in sugar 
broth (c). 
(a) 
Filtra- 
tion 
plant. 
(6) 
Agri- 
cultu- 
ral De- 
part- 
ment. 
(c) 
Hygi- 
enic 
Labor- 
atory. 
0.1 c. c. 
1 c. c. 
10 c. c. 
0.1 c. c. 
1 c. c. 
10 c.c. 
1907. 
550 
750 
3, 775 
+ (ci- 
-l-(a) (c) 
4- 
4- 
2 
900 
146 
800 
1 
+ (a) (c)... 
4- 
3 
4 
5,500 
10,000 
19,000 
-t-(a) (c). 
+ (a) (c)... 
+ {a) (c)... 
+ 
4- 
4- 
5 
6,000 
40,000 
20,000 
4- (a) (c). 
-b (a)(6)(c). 
+ (a) (6)(c) 
4- 
4- 
4- 
6 
5,000 
13,000 
14, 700 
+ (c) 
-l-(a) (6)(c). 
+ (a) (c)... 
-b 
4- 
4- 
7 
14,000 
5,000 
56,000 
-l-(a) (c) . . . 
+ (a) (c) . . . 
4- 
4- 
8 
1,900 
4,500 
12,300 
+ (a) .... 
+ (a) (c)... 
+ (a) (c) ... 
- 
4- 
4- 
9 
4,000 
6,000 
7,900 
+ (a) (c). 
+ (a) (c)... 
+ (a) (c) ... 
4- 
4- 
4- 
10 
11 
1,200 
1,100 
7, 200 
+ (c) 
4- 
4- 
12 
7,500 
1,850 
2,600 
-f-(a) (c) . .. 
+ (a) (c) . . 
4- 
4- 
13.... 
1,600 
1,140 
3,100 
+ (<z) 
4- (a) (c) . . 
4- 
4- 
14 
2,700 
1,080 
2, 650 
-l-(c) 
4- (a) (b)(c). 
+ 
4- 
4- 
15 
1,800 
800 
2, 100 
-f-(a) (c) . . 
4- 
4- 
16 
1,100 
1,900 
+ (c) 
+ (c) 
4-(c) . 
4- 
4- 
4- 
17.... 
18... 
1,600 
1,400 
2,250 
+ (c) 
i 
4-fc'l 
4- 
4- 
4- 
19.... 
1,300 
1,500 
1,700 
-l-(c) 
-b ! 
20 
500 
11,800 
+ (c) 
+ (a) (c) - . 
4- (a) (c) . . 
4- 
4- 
4- 
21 
9, 900 
18,800 
4-(r') 
4- (a) (c) . 
4- (a) (c) . . 
4- 
4- 
4- 
22 
10,000 
13, 700 
+ (c)--- 
+ (a) (c) . . 
4- (a) (c) . . 
4- 
4- 
4- 
23 
18,000 
24,500 
-b(u) 
+ («) (c) . . 
4- (a) (c) . . 
4- 
4- ! 
4- 
24 
25 
50,000 
14,200 
-1- (a) (c) . 
+ (a) (c) . . 
4- (a) (c) . . 
4- 
4- 
4- 
26 
40,000 
36,000 
+ (c) . 
-t- (a) (c) . . 
4- (a) (c) . . 
4- 
-b j 
4- 
27 
16,000 
74,000 
+ (c) 
+ (a) (c) .. 
4 - (a) (c) . . 
4- 
4- 
4- 
28 
29 
10,000 
139,600 
+ (a) (c) .. 
4- (a) (c) . . 
4- 
4- 
.30 
3,800 
10,800 
4-(c) 
4- 
4- 
Average 
9,634 
5,885-t-, 
1 
20,055- 
