21
MADURA.
WATER SAMPLES TAKEN
—24TH MAY 1911.
REMARKS.—The river bed of the Vaigai river was dry when samples were taken. Spring channels are cut in the bed of the river to
increase the yield. The supply is intermittent. There has been about 4 inches of rain since last analysi
s.
Bacteriological Analyses.
SAMPLE 1.—FROM A CHANNEL CUT IN THE BED OF THE RIVER
VAIGAI.
Nu mb e r .
L a c t o s e .
Sa c c ha r os e .
Dul ci t e. Adoni t e. I nul i ne .
V o g e s a n d p r o s k .
Indol.
Mot i l i t y.
G r o u p .
Name of Bacilli.
Group and
Remarks.
Total colonies per cc. on agar at 37° C
.—8,000.
Bile salt lactose, medium.
+
-
1 tube of 20 cc. ...
...
...
...
1
...
2 tubes of 10 cc. ...
...
...
...
2
...
1 + -
- - - -
+ - I B. Vesiculosus
... Group
I, 6.
3
„
5 cc. ...
...
...
...
3
. . .
2 + - - - - - + - I
D o .
, , I I ,
n i l .
3
„
1 cc. ...
...
...
...
3
. . .
3 + + - - - - + - IV B. Coscoroba
...
,,
III, nil.
3
„
.1 CC. ...
...
...
...
3
. . .
4 + - - - - - + - I B. Vesiculosus
, , I V , 4 .
3
„
.01 cc. ... ... ...
...
1
2
5 + + - - - - + - IV B. Coscoroba.
6
+
- -
- - + -
I B. Vesiculosus.
Fœcal bacilli in .1 cc. and upwards.
No vibrios in 100 cc.
7 + + - - - - + - IV B. Coscoroba.
8
9
+
+
+ - - - -
++
-
-
IV
I
Do.
.
B. V esiculosus
...
Class
I, nil.
„
II, 4.
10 + -
- -
- - + - I
D o .
,,
III, 6.
SAMPLE II. —TAP IN FRONT OF PUMPING STATION.
cc. on agar at 37° C.-50.
1 + + - + - + - - IV B. Lactis aprogenes... Group I,
nil
.
2 +
+ - +
- +
- -
I V
Do.
...
„
II, nil.
3 +
+ - + -
+ - - IV
Do.
... „ III,
nil
.
4 +
+ - + - + - - IV
Do.
...
„ IV, 10.
Total colonies per
Bile salt lactose, medium.
+
-
5
5 + +
- + - + - - IV
Do. . . .
6 +
+ - + - + - - IV
Do. . . .
7 +
+ - + - + - - IV
Do. . . .
8 + + - + - + - - IV
Do. . . .
Class I, nil,
1 tube of 20 cc.
...
...
...
...
1
. . .
9 + +
- + - + - - IV
D o . . .
II, 10.
2 tubes of 10 cc.
...
...
. . . . . .
2
...
10 +
+
- + - + - - IV
Do.
... ,,
III,
nil
.
3 „
5 cc.
...
...
...
...
3
.
3
„
1 cc.
...
...
...
2
1
3
„
.1 cc. ... ... ... ...
. . .
3
3
„
.01 cc. ... . .. ... ... ...
3
Fœcal baci l l i i n 1. cc. and upwar ds.
No vibrios in 100 cc.
SAMPLE III.
—TAP IN MANGAMMAL CHATRAM.
Total colonies per cc. on agar at 37° C.—Cannot be counted
1 + + -
- -
- + - IV B. Coscoroba
... Group I, nil.
2
+ + - - - - + - IV
Do.
...
„
II, nil.
3
+ + -
-
-
- + - IV
Do.
„ III, nil.
4 + + - - - - + - IV
Do.
...
„
IV, 10.
5 + + - - - - + - IV
Do,
(one colony occupying the whole plate).
Bile salt lactose, medium.
+
-
6 + + - - - - + - IV
Do.
7 + +
-
-
- - + - IV
D o .
8 +
+ - - -
- + - IV
Do.
... Class I, nil.
1 tube of 20 cc.
...
...
...
. . .
1
..
9
+ + + - - - - + - IV
Do
„
II, 10.
2 tubes of 10 cc. ... ... ... ...
2
...
10 + + - - - -
+
-
IV
Do.
...
„ III nil.
3
„
5 cc.
...
. . . . . . . . .
3
...
3
,,
1 cc.
...
...
. . . . . .
1
2
3
,, . 1
c c .
. . .
. . .
. . .
. . .
. . .
3
„
3
„
.01 cc.
. . . . . . . . . . . .
. . .
3
Fœcal bacilli in 5 co. and upwards.
No vibrios in 100 cc.
SAMPLE IV.—PILLAR FOUNTAIN No. I NEAR BIG TEPPARULAM.
Total colonies per cc. on agar at 37° C.-270.
1 +
- -
-
- - + - I B. Vesiculosus
... Group I, 9.
2 + - - - - -
+ -
I
Do.
, ,
I I ,
n i l .
3 +
-
- - - + -
I
Do.
...
„ III, nil.
4
+ - -
- - - + -
I
Do.
,,
IV, 1..
Bile salt lactose, medium.
+
-
5
+ -
- - - + - I
1)o.
6 + - -
- - - + - I
Do.
7 + - - - - - +
- I
Do
8 + + - - - - + - IV B. Coscoroba
... Class I, nil.
1 t u b e o f2 0c c . . . . . . . . . . . . . .
1
...
9 + - -
- - - + - I B. Vesiculosus
...
,, II, I.
2 tubes of 10 cc.
...
...
. . .
...
2
...
10 + - - - - - + -
I
Do.
...
„ III, 9.
3
,, 5 cc . ... ...
... ...
3 ...
3 ,,
1 cc. ... ...
... ...
3
. . .
3 ,,
. 1 c c . . . . . . . . . . . . .
3
. . .
3
,,
.01 cc. ... ... ... ...
3
. .
Fœcal bacilli in .01. cc. and upwards.
No vibrios in 100 cc.
6