Table IV.
Results of the Bacteriological Examination of the Tytum Water Supplies for the year 1922.
Mac Conkey's Lactose Neutral Red bile
Salt Peptone Water.
Sample.
Date.
Rate of filtra- tion.
Total Colonies
on Agar
in lee at
37° C.
e.e. e.c.
2 c.c. 5 c.c.
10 e.c. 20 e.c. 50 c.c.
Presence of the Coli group.
Unfiltered,
9-1-22.
186
Filtered,
9-1-22.
80
Unfiltered,
6-2-22.
40
Filtered....
6-2-22.
6
Unfiltered,
13-3-22.
10
Filtered,
13-3-22.
10
Unfiltered,
3-4-22.
83
Filtered...
3-4-22.
Unfiltered,
1-5-22.
30
•
Filtered,
1-5-22.
Unfiltered,
6-6-22.
Filtered, ...
6-6-22.
85 11
Unfiltered,
3-7-22.
70
•
Filtered, ...
3-7-22.
5
Unfiltered,
8-8-22.
30
Filtered,
8-8-22.
10
Unfiltered,
4-9-22.
77
Filtered, ...
4-9-22.
18
Unfiltered,
2-10-22.
100
Filtered,
2-10-22. |
15
Unfiltered,
1-11-22.
266
Filtered,
1-11-22.
23
Unfiltered,
4-12-22.
Filtered,
86 15
4-12-22.
+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 +
+ +
+++
+ 1 + 1 + +
Group I in 1 c.c. Absent in 50 c,c.
Group IV. Group II.
Group I. in 1 c.. Negative up to 30 e.c.
Group I. Group II.
Group II.
Group 1.
Group I in 1 c.e.
Negative up to 50 c.é. Group I in 1 c.c. Negative up to 50 c.c. Group IV. Groups I & IV. in 1 c.c. Group II. in 50 c.c. Group I. Group IV in 1 e.c. Negative up to 50 e.c. Group III in 5 c.c. Negative up to 50 c.c. Group IV, Group IV.
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.
Neid und Clas 1.
Acid only,
Classification of the Coli group is that of MacConkey, +=
No Change.
— 46 —