135
MADRAS.
WATER SAMPLES TAKEN -10TH AND 11TH OCTOBER 1912.
Remarks .—There was a small flow of water from Sholavaram Channel to the Red Hills Lake.
Maclean's Channel was dry. The supply is constant. There has been about
8 . 52 inches of rain since last analysis.
Bacteriological Analyses.
SAMPLE I.—SHOLAVARAM CHANNEL.
N u m b e r .
La c t os e .
Sacchar ose. D u l c i t e .
A d o n i t e . I n u l i n . Vo g e s a n d p r o s k . I n d o l . Moti l i ty. Group. .
Name of Bacilli.
Group and
Remarks
Total colonies per cc. on agar at 37° C.—Countless.
Bile salt lactose, medium.
+
-
1 tube of 20 cc.
...
1
. . .
.
2 tubes of 10 cc.
...
...
...
2
...
1 + - - - - -+ + I
B. Grunthal
,.. Group I, 8
3 „ 5 cc.
...
...
...
...
3
..
2 + -
- - - -
+ + I
Do.
„ II, nil.
3 „ 1 cc.
...
...
...
...
3
...
3 + -
- - - -
+ +
I Do.
3 „ .1 cc.
...
1
2
4 + -
- - - -
+ +
1
Do.
„ III, nil .
3 .01 cc.
...
...
...
1
2
5 + + - - - - + + IV B. 106
...
„ IV, 2.
Fœcal bacilli in 1 cc. and upwards.
6 + - - - - - + + I
B. Grunthal.
7 + - - - - - + + I
Do.
8 + + - - - + + IV B. 106
...
... Class I, nil.
9 + - - - - - + + I
B. Grunthal
...
„ II, 2.
Vibrios present in 100 cc.
10 + -
- - - - + + 1
Do.
..
„ III, 8.
SAMPLE II.—FROM THE BOTTOM OF THE RED HILLS LAKE.
1
+ -
- - - - + + I
B. Grunthal
... Group I, 9.
2 + -
- - - - + + I
Do.
II, nil.
Total colonies per cc. on agar at 37° C.—880.
3 + - - - - - + + I
Do.
...
„ III, nil.
4 + - - - - - + + 1
Do.
...
„ IV, 1.
Bile salt lactose, medium.
+
-
5 + - - - - - + + I
Do.
6 + -
- - - - + + I
Do
7
+ -
- - - - + + I
Do.
1 tube of 20 cc. ... . ..
1
...
8 + + - + - - - - IV B. Gasoformans
.
Class I, nil.
9 + - - - - - + + I B. Grunthal
„ I I 1 .
2 tubes of 10 cc.
...
...
2
. . . 10 + - - -
- - + + I
Do.
„ I I I , 9 .
3 „ 5 cc.
...
...
...
...
1
2
3 ,. 1 cc.
. . .
3
3 „ .1 cc.
...
...
...
3
3 „ .01 cc.
...
...
. . .
3
Fœcal bacilli in 10 cc. and upwards.
Vibrios present in 100 cc.
SAMPLE III.—FROM THE SURFACE OF THE RED HILLS LAKE.
1 + +
+
- - - + - III B. Neapolitanus
... Group I, nil.
Total colonies per cc. on agar at 37° C.—450.
2 + +
+ - - - + - III
Do.
„ II, nil.
3
+ +
+ - - - + - III
Do.
„ I I I , 1 0 .
Bile salt lactose, medium.
+
-
4 + + + - - - + -
I I I
Do.
...
,, IV, nil.
5 + + + - - - + - III
Do.
6 + +
+ - - - + - III
Do.
1 tube of 20 cc....
1
...
7 + +
+ - - - + - III
Do.
8 + + + - - - + -
I I I
Do.
... Class 1, nil.
2 tubes of 10 cc.
...
1
1
9 + + + - - - + - III
Do.
„ II, 10.
3 „ 5 cc.
3
10 + + + - -
- + - III
Do.
„ I I I ,n
i l .
3 „ 1 cc.
...
...
•..
...
3
3 „ .1 cc.
3
3 „ .01 cc,
...
...
...
...
3
Fœcal bacilli in 10 cc. and upwards.
Vibrios present in 100 cc.
SAMPLE IV.—A TAP IN MA LAYAPERUMAL STREET IN GEORGETOWN.
1 + - - + - - + - I
B. Acidi lactici
... Group I, 10.
Total colonies per cc. on agar at 37° C.—910.
2
+ - - + -
- +
- I
Do.
...
„ II, nil.
3 + - - + - - + - I
Do.
...
„ III, nil.
Bile salt lactose, medium.
+
-
4 + - - + - - + - I
Do.
„ I V ,n
i l
.
5
+ - - + - - +
- I
Do
6 + - - + - - + - I
Do.
1 tube of 20 cc.
...
...
. . .
. . .
1
. . .
7
+ - - + - -
+ - I
Do.
8 + - - + - - + - I
Do.
... Class I, nil.
2 tubes of 10 cc.
2
. . .
9
+ -
-
+ -
- + - I
Do.
„ I I , 1 0 .
3 „ 5 cc.
,,
...
...
.
2
1
10 +
- - + - - + - I
Do.
...
„III, nil.
3 „1 cc,,
...
. . .
. . .
1
2
3 „ .1 cc...
..
...
.
. . .
3
3 „ . 0 1 c c .
. . .
. . .
. . . ...
3
Fœcal bacilli in 5 cc. and upwards.
--
No vibrios in 100 cc.
39