Table IV.
Results of the Bacteriological Examination of the Fokfulum Water Supply for the year 1918.
Date. Rate of Filtration. Total Colonies on Agar in 1 cc. MacConkey's Lactose Neutral Red Bile Salt Peptone Water. Presence of the Coli Group. 1 cc. 2 cc. 5 cc. 10 cc. 20 cc. 50 cc. Unfiltered, Filtered, 7-1-18. 45 Unfiltered, 7-1-18. 294 Filtered, 9-1-18. 20 Filtered, 9-1-18. 294 Unfiltered, 11-1-18. 50 Filtered, ... 11-1-18. 294 Unfiltered, 8-4-18. 125 Filtered, ... 8-4-18. 325 Unfiltered, 10-4-18. 100 Filtered,...! 10-4-18. 325 Unfiltered, 12-4-18. 80 Filtered, 12-4-18. 325 Unfiltered, 8-7-18. 50 Filtered, 8-7-18. 700 Unfiltered, 10-7-18. 50 Filtered, 10-7-18. 650 Unfiltered, 12-7-18. 30 Filtered, 12-7-18. 525 Unfiltered, 7-10-18. 45 Filtered, ... 7-10-18. 500 Unfiltered, 9-10-18. 40 Filtered, 9-10-18. 500 Unfiltered, 11-10-18. 50 + + + + + + Filtered, Group II in 1 cc. 11-10-18. 625 + + + + + + Unfiltered, Group II in 50 ccs.All samples taken either immediately before or immediately after filtration. The rate of filtration is given by the Water Authority in gallons per square yard per day. Classification of the Coli Group is that of MacConkey, + Acid and Gas;
Acid only;
= No change.
M72
Table IV.
Results of the Bacteriological Examination of the Fokfulum Water Supply for the year 1918.
Rate Total Colo-
MacConkey's Lactose Neutral Red Bile
Salt Peptone Water.
nies on
of
Sample,
Date.
Agarin 1 cc
Filtraat 37°C. for
tion.
24 hours. 16 cc.
1 ce.
2 cc.
5 cc.
10 cc. 20 cc. | 50 cc.
Presence of the Coli Group.
Unfiltered, Filtered, Unfiltered,
7-1-18.
45
7-1-18. 294
10
9-1-18.
20
Filtered,
9-1-18. 294
2
Unfiltered,
11-1-18.
50
Filtered, ...
11-1-18. 294
3
Unfiltered,
8-4-18.
125
Filtered, ...
8-4-18. 325
5
Unfiltered,
10-4-18.
100
Filtered,...!
10-4-18. 325
10
Unfiltered,
12-4-18.
80
Filtered,
12-4-18.
325
10
Unfiltered,
8-7-18.
50
Filtered,
8-7-18. 700
30
Unfiltered,
10-7-18.
50
Filtered,
10-7-18. 650
Unfiltered,
12-7-18.
30
Filtered,
12-7-18. 525
10
Unfiltered,
7-10-18.
45
Filtered, ...
7-10-18. 500
10
Unfiltered,
9-10-18.
40
Filtered,
Unfiltered,
9-10-18. 500 11-10-18.
50
+
Filtered, 11-10-18.
625
| + | + | + | | | + 1 + 1 + ! | | + | + | | 1+
+1 11+ | + | | | + ] + [ +0││+1 +1 +1
[ + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 +
+++ 1 + 1 + 1 + 1 + !+ !+ !+ !+ !+]
| + 1 + 1 + ! + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 +
+++ !+ !+ / +++ 1 +++1++
| + 1 + +
Group II in 1 cc. Group II in 50 ecs. Groups II & III in 5 ccs. Negative up to 50 ccs. Group III in 1 cc. Negative up to 50 ces. Group IV in 20 ces. Negative up to 50 ccs. Group III in 5 ccs. Negative up to 50 ccs. Group II in ce. Negative np to 50 ees. Groups III & IV in 1 cc. Group III in 50 ccs. Groups III & IV in 1 cc. Negative up to 50 ces. Group IV in 5 ces. Group IV in 50 ccs. Group III in 1 cc. Group III in 50 ces. Group III in I ce. Negative up to 50 ccs.
Groups II & III in 1 cc. Negative up to 50 ccs.
All samples taken either immediately before or immediately after filtration. The rate of filtration is given by the Water Authority in gallons per square yard per day. Classification of the Coli Group is that of MacConkey, + Acid and Gas;
Acid only;
= No change.
M 72
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