Table II.
Results of the Bacteriological Examination of the Kowloon Water Supply for the year 1916.
Rate Total Colo- Sample. Date. nies on Agarin 1 cc Filtra- at 37°C. for tion. 24 hours. 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, 4-1-16. 5 + + + + + + Filtered, 55! 4-1-16. Groups I, III, & IV in 20 cc. Negative in 50 cc. Unfiltered, 6-1-16. 35 + + + + + + Filtered, 552 6-1-16. 5 Groups II, III & IV in 2 cc. Negative in 50 cc. Unfiltered, 8-1-16. 40 + + + + + + Filtered, 553 8-1-16. 10 Group II in 2 cc. Group III in 50 cc. Unfiltered, 4-4-16. 85 + + + + + + Filtered, 527 4-4-16. 25 Group IV in 2 cc. Unfiltered, 6-4-16. 60 + + + + + + Filtered, 534 6-4-16. 15 Groups I & IV in 20 cc. Unfiltered, 8-4-16. 50 + + + + + + Filtered, 540 8-4-16. Groups III & IV in 2 cc. Unfiltered, 4-7-16. 70 + + + + + + Filtered, 560 4-7-16. Groups I & IV in 50 cc. Unfiltered, 6-7-16. Filtered, 441 6-7-16. Unfiltered, 8-7-16. Filtered, 565 8-7-16. Groups I, III & IV in 2 cc. Negative up to 50 cc. Unfiltered, 3-10-16. Filtered, 624 3-10-16. Group IV in 2 cc. Unfiltered, 5-10-16. Filtered, 610 5-10-16. Group IV in 50 cc. Unfiltered, 7-10-16. SS + + + + + + Filtered, 608 7-10-16. 15 Group III in 2 cc.Filtered,
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.
Table II.
Results of the Bacteriological Examination of the Kowloon Water Supply for the year 1916.
Rate Total Colo-
of
Sample.
Date.
nies on
Agarin 1 cc
Filtra-at 37°C. for
tion. 24 hours. 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,
4-1-16.
5
Filtered,
4-1-16.
55!
Unfiltered,
6-1-16.
35
Filtered,
6-1-16. 552
5
Unfiltered,
8-1-16.
40
Filtered, ..
8-1-16.
553
10
Unfiltered,
4-4-16.
85
Filtered,
4-4-16. 527
25
Unfiltered,
6-4-16.
60
༤
Filtered,
6-4-16.
534
15
Unfiltered,
8-4-16.
50
Filtered,
8-4-16. 540
Unfiltered,
4-7-16.
70
Filtered,
4-7-16. 560
Unfiltered,
6-7-16.
Filtered,
6-7-16.
441
Unfiltered,
8-7-16.
Filtered,...
8-7-16. 565
Unfiltered,
3-10-16.
Filtered,
3-10-16. 624
Unfiltered,
5-10-16.
Filtered,
5-10-16. 610
Unfiltered, 7-10-16.
SS SS
6
10
15
25
30
7-10-16. 608
15
+ 1 + 1 ++
Groups I, III, & IV in 20 cc. Negative in 50 cc.
Groups II, III & IV in 2 cc. Negative in 50 cc. Group II in 2 cc. Group III in 50 cc. Group IV in 2 cc.
Groups I & IV in 20 cc.
Groups III & IV in 2 cc. Groups I & IV in 50 cc. Groups I, III & IV in 2 cc. Negative up to 50 cc. Group IV in 2 cc. Group IV in 50 ce. Group III in 2 cc. Group IV in 50 ce. Groups I & III in 2 cc. Group I in 50 cr.
+
+
+1++
+1 +1 +1 +++ 1 + 1 + 1 + 1 + 1 + 1 ++++
| | + | + | + | + | + 1 + 1 + ¦ + ] | [ + 1 + 1
| | + | + | + | + | + | + | + | + | | | | | + |
| 1 + 1 + 1 + 1 + ] + 1 + 1 + 1 + 1 |
Group III in 20 cc.
+
Group III in 50 cc.
+
Group III in 10 cc.
Group III in 20 ec
++
Group IV in 5 ce, Group I in 20 cc.
M 74
I
Filtered,
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.
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