97 
FRANKLIN SQUARE TAP. 
Percentage hf samples giving fermentation in lactose broth. 
Date. 
I Number 
of 
1 samples. 
In 1 c. c. 
In 10 c. c. 
1908. 
Per cent. 
Per cent. 
July 
7 
25 
18 
4 
0 
4 
11 
0 
28 
28 
33 
0 
SOUTH WASHINGTON (NEAR WHARF) TAP. 
Percentage of samples giving fermentation in lactose broth. 
Date. 
Number 
of 
samples. 
In 1 c. c. 
In 10 c. c. 
1908. 
J une 
Per cent. 
Per cent. 
July 
3 
22 
18 
4 
0 
9 
16.6 
0 
33 
36 
39.8 
lb 
August 
September . . 
October 
HYGIENIC LABORATORY TAP. 
Percentage of samples giving Jermentation in lactose broth. 
Date. 
Number 
of 
samples. 
In 1 c. c. 
1 
In 10 c. c. 
1 
1908. 
June 
Per cent. 
i 
Per cent. 
July 
6 
22 
17 
4 
16.6 
0 
17.6 
0 
49.8 
18 
52.9 
0 
August 
September 
October 
TAP AT 3211 THIRTEENTH STREET NW. 
Percentage of samples giving fermentation in lactose broth. 
1 
Date. 
Number 
1 of 
samples. 
In 1 c. c. 
! 
In 10 c. c. 
1908. 
June 
July 
August 
j --I 
5 
15 
Per cent. 
i i 
0 ' 
13 
Per cent. 
20 
CO 
September 
October 
i i 
1 
i 
1 
179— Bull. 52—09 7 
