31 
Table showing the number of bacteria and presence of colon bacilli found in samples talcen 
from the inlet of Dalecarlia Reservoir — Continued. 
JULY. 
Date. 
Number of bacteria 
per cubic centime- 
ter. • 
B. coll in— 
Fermentation in sugar 
broth (c). 
(a) 
Filtra- 
tion 
plant. 
(&) 
Agri- 
cultu- 
ral De- 
part- 
ment. 
Hygi- 
enic 
Labor- 
atory. 
0.1 c. c. 
1 c. c. 10 c. c. 
1 
0.1 c. c. ; 1 c. c. 
10 c. c. 
1907. 
July 1 
1,600 
131 
.5,600 
+ (a)(c)-. 
-f-(a)( 6 )(c) +{a){b){c) 
+ -i- 
4- 
2 
1,900 
84 
2,9.50 
+ (c) .... 
+ (a)(&)(c) + (a)( 6 )(c) 
+ -h 
4- 
3 
1,200 
202 
150 
-l-fc') +(b')(c'\ 
- 1 - + 
4- 
4 


920 
162 
350 
+ (c) ... +(c) ... 
— -t- 
+ 
6 
370 
97 
350 
-f-(c) +(. 6 ) (C; . . 
— - 1 - 
-I- 
7 
8 
132 
960 
-|-(c) -i-(c) 
— + 
4- 
9 
130 
748 
2, 050 
-l-(c) 
-|-(c) +(?)) (c). 
- 1 - - 1 - 
4 . 
10 
678 
2, 100 
+ (a) (c) . 
-f(c) (a) ... 4 -( 6 )(c)(a) 
4- 4- 
4 - 
11 
470 
1,015 
1,305 
4 -(c) +(c) 
— 4- 
4 - 
12 
600 
444 
1,150 
-}-(c) 
-l-(c) +(^>)(c) 
4- -f- 
4 - 
13 
2,800 
433 
4, 700 
4 -(a)(c).. 
-f- (a)( 6 )(c) -f (a)( 6 )(c) 
-h 4- 
-h 
14 
15 
2,800 
189 ' 
2, 800 
+ (a) .... 
-f- (a)( 6 )(c) - 1 - (a)( 6 )(c) 
- 4- 
4- 
16.. ’ 
1,100 
1,750 
+ ( 6 ) .... 
-f( 6 )(c).... -l-( 6 )(c). .. . 
— 4- 
4- 
17 
500 
460 
2, 150 
+ ( 6 )(c). . 
+ (c) +(^)(c). ... 
4- -t- 
4 - 
18 
1,050 
253 
400 
-•-(c) 
+ {b) J-( 6 )(c). . . 
4- — 
4 - 
19 
3, 400 
401 
2,500 
-f(c) 
-|-(a)(c) +(a)( 6 )(c) 
4- 4- 
4- 
20 
550 
125 
850 
-l-(a) 
4 - (a)( 6 )(c) + (a)( 6 )(c) 
+ + 
4 - 
21 
99 
7,400 
• 137 
2,400 
-f(c) 
+ (a)( 6 )(c) -f-(a)(c) ’ 
4- 4- 
4 - 
23 
15,400 
1,400 
1,200 
-f-(c) 
+ (^)( 0 ---- +(^)( 0 ---- 
4- 4- 
24 
134 
950 
-!-(c) 
+ ( 6 ) + (a)( 6 )(c) : 
4- — 
4 - 
25 
1,800 
i 148 
500 
-f (c) 
-t-(c) -f(c) 
4- 4- 
+ 
26 
410 
160 
1,050 
+( 6 )(c).... 
97 
32 
4,400 
-i-( 6 )(c). ... +tc) 
_ 
+ 
28 
1,040 j 
29 
9,300 
22 
750 
+ (&) 
-l-(a)(c).... 
- - 
+ 
30 
45 
550 
4 -(c) 4-(o) (c) 
u. 
4- 
31 
426 
700 
-f-(c) +( 6 )(c) 
— 4- 
4- 
Average ,. . 
2, 682 
352-1- 
1, 715-f 
■, 1 
1 
1 
