Table III.
Results of the Bacteriological Examination of the Tytam Water Supply for the year 1917.
Date. Rate of Sample. Total Colonies on MacConkey's Lactose Neutral Red Bile Agar in Ice Salt Peptone Water. Presence of the Coli Group. 37°C. for 24 hours. 2 cc. 5 cc. 10 cc. 20 cc. 50 cc. Unfiltered, 8-1-17. 60 + + + + + Filtered, 8-1-17. 700 10 + + + + + Unfiltered, 10-1-17. 10 + + + + + Filtered, 10-1-17. 633 5 + + + + + Unfiltered, 12-1-17. 20 + + + + + Filtered, 12-1-17. 481 10 + + + + + Unfiltered, 16-4-17. 60 + + + + + Filtered, 16-4-17. 563 20 ++ Unfiltered, 18-4-17. 45 + + + + + Filtered, 18-4-17. 743 5 + + + + + Unfiltered, 20-4-17. 40 + + + + + Filtered, 20-4-17. 701 + + + + + Unfiltered, 9-7-17. 70 + + + + + Filtered, 9-7-17. 760 20 + + + + + Unfiltered, 11-7-17. 40 + + + + + Filtered, 11-7-17. 660 25 + + + + + Unfiltered, 13-7-17. 30 + + + + + Filtered, 13-7-17. 782 30 + + + + + Unfiltered, 1-10-17. 60 + + + + + Filtered, 1-10-17. 770 15 + + + + + Unfiltered, 3-10-17. 15 + + + + + Filtered, 3-10-17. 770 15 + + + + + Unfiltered, 5-10-17. 65 + + + + + Filtered, 5-10-17. 700 10 + + + + +Groups II & III in 10 ccs. Group III in 50 ccs. Group III in 20 ccs. Group III in 50 ccs.
Groups II & III in 10 ccs. Group III in 50 ccs.
Groups I & IV in 1 cc. Group I in 20 ccs. Group I in 1 cc. Group I in 20 ccs.
Groups III & IV in 1 cc. Group III in 20 ccs.
Group IV in 2 ccs.
Groups III & IV in 20 ccs.
Group III in 1 cc.
Group III in 5 ccs.
Group III in 5 ccs.
Group III in 20 ccs.
Group IV in 2 ccs.
Group IV in 20 ccs.
Group IV in 5 ccs.
Group IV in 20 ccs.
+
Groups III & IV in 5 ccs. Group IV 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.
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Table III.
Results of the Bacteriological Examination of the Tytam Water Supply for the
Rate Total Colo
nies on
MacConkey's Lactose Neutral Red Bile.
year 1917.
of
Sample.
Date.
Filtraat 37°C. for
Filtra-Agar in Ice
Salt Peptone Water.
Presence of the Coli Group.
tion.
24 hours. To cc. ee.
2 CC.
5 cc.
10 ee. 20 cc. | 50 cc.
+ 1 + ¦ + !+++++++++
+ + + +
+11 + 1 + 1 + 1 + 1 + 1 +++ ¦ + ¦ + ! + !
+
+
+
[ + ] + 1 + 1 + 1 + 1
++
+
Unfiltered,
8-1-17.
60
Filtered,
8-1-17.
700
10
Unfiltered, 10-1-17.
10
Filtered,
10-1-17. 633
5
Unfiltered,
12-1-17.
20
Filtered.
12-1-17. 481
10
Unfiltered,
16-4-17.
60
Filtered,
16-4-17. 563
20
++
Unfiltered,
18-4-17.
45
Filtered,
18-4-17. 743
5
Unfiltered,
20-4-17.
40
1 1 + i + ! !
! ! ! +1 +1 +
Filtered,
20-4-17. 701
Unfiltered,
9-7-17.
70
Filtered,
9-7-17. 760
20
Unfiltered,
11-7-17.
40
+
Filtered,
11-7-17. 660
25
Unfiltered,
13-7-17.
30
Filtered,
13-7-17. 782
30
Unfiltered,
1-10-17,
60
+
+
Filtered,
1-10-17. 770
15
Unfiltered,
3-10-17.
15
Filtered, ....
3-10-17. 770
15
Unfiltered, 5-10-17. Filtered, ...
5-10-17.
65
700
10
Groups II & III in 10 ces. Group III in 50 ces. Group III in 20 ces. Group III in 50 ces,
Groups II & III in 10 ees. Group III in 50 ces.
Groups I & IV in ly ec. Group I in 20 ces. Group I in ce. Group I in 20 ces.
ΤΟ
Groups III & IV in 1 ec. Group III in 20 ces.
Group IV in 2 ces.
I
Groups III & IV in 20 ees.
Group III in 1 ec.
Group III in 5 ces.
Group III in 5 ces.
Group III in 20 ces.
Group IV in 2 ces.
Group IV in 20 ces.
Group IV in 5 ces.
Group IV in 20 ces
+
Groups III & IV in 5 ves. Group IV in 50 ees.
All samples taken either immediately before or immediately after filtration.
Water Authority in gallons per square yard per day. Classification of
**
+ Acid and Gas ;
-L
Acid only:
-
= No change.
The rate of filtration is given by the the Coli Group is that of MacConkey,
M 73
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