36
GUDIYÁTTAM.
WATER SAMPLES TAKEN-28TH JUNE 1911.
REMARKS.—The river-bed of Koundanya was dry when samples were taken. The supply is constant. There has been about 5.26 inches
of rain since last analysis.
Bacteriological Analyses.
SAMPLE I.—TAP ADJOINING THE SERVICE RESERVOIR.
Number .
Lact ose.
S a c c h a r o s e . Dul ci t e.
Adoni t e.
I n u l i n e . V o g e s a n d P r o s k .
Indol.
Mo t i l i t y .
Group.
Name of Bacilli.
Group and
Remarks.
Total colonies per cc. on agar at 37° C.—70.
Bile salt lactose, medium.
+
-
1 tube of 20 cc...
1
...
1 + - - - - - + -
I B. Vesiculosus
... Group I,10.
2 tubes of 10 cc.
2
. . .
2 + - - - - - + +
I B. Grunthal
. . .
„ II, n i l
.
3 „ 5 c c .
3
. . .
3 + - - - - - + +
I
Do.
...
„ I I I ,n
i l
.
3 „ 1 c c .
2
1
4 + - - - - - + +
I
Do.
...
„ I V ,
n i l .
3 „ .1 cc.
1
2
5 + - - - - - + + I
Do.
3 „ .01 cc.
...
...
... ...
3
6 + - - - - - + -
I B. Vesiculosus.
Fœcal bacilli in 1 cc. and upwards.
7 + - - - - - + -
I
Do.
8 + - - - - - + -
I
Do.
... Class I, nil.
No vibrios in 100 cc.
9 + - - - - - + -
I
Do.
. . .
„ I I ,
n i l
.
10 + - - - - - + -
I
Do.
„ I I I , 1 0 .
SAMPLE II.—TAP NEAR MUHAMMADAN SCHOOL.
1 + - - - - - + +
I B. Grunthal
... Group I, 8.
Total colonies per cc. on agar at 37° C.—80.
2 + + + - - - + - III B. Neopolitanus ...
„ I I ,
n i l
.
Bile salt lactose, medium.
+
-
3 + - - - - - + +
I B. Grunthal
...
„ I I I , 1 .
4 + - - - - - + -
I B. Vesiculosus
...
„ I V , 1 .
5 + - - - - - + + I B. Grunthal.
1 tube of 20 cc.
...
...
... ...
1
...
6 + - - - - - + +
I
Do.
7
+ - - - - - + +
I
Do.
2 tubes of 10 cc.
...
...
2
...
8 + + - - - - + - IV B. Coscoroba
... Class I, nil.
3 „ 5 cc.
3
...
9 + - - - - - + +
I B. Grunthal
...
„ II, 2.
3 „ 1 cc.
... ...
...
...
2
1
10 + - - - - - + -
I B. Vesiculosus
...
„ III, 8.
3 „ .1 cc.
1
2
3 „ .01 cc.
...
...
... ...
. . .
3
Fœcal bacilli in 1 cc. and upwards.
No vibrios in 100 cc.
SAMPLE III.—TAP IN FRONT OF TRAVELLERS' BANGALOW.
1 + - - - - - + -
I B. Vesiculosus
... Group I, 8.
Total colonies per cc. on agar at 37° C.—20.
2
+ - - - - - + +
I B. Grunthal
..
„ II, nil.
Bile salt lactose medium.
+
-
3 + - - - - - + + I
Do.
...
„.III, ni l .
4 + - - - - - + + I
Do.
...
„ IV, 2.
5 + + - - - - + + IV B.106.
1 tube of 20 cc.
1
. . .
6 + - - - - - + +
I B. Grunthal.
2 tubes of 10 cc.
...
2
...
7 + - - - - - + + I
Do.
3 „ 5 cc.
...
...
. . .
3
. . .
8 + + - - - - + - IV B. Coscoroba
... Class I, nil.
3 „ 1 cc.
2
1
9 + - - - - - + + I B. Grunthal
„ I I , 2 .
3 „ .1 cc.
...
...
...
. . .
1
2
10 + - - - - - + + I
Do.
„ III, 8.
3 „ .01 cc.
...
...
...
. . .
. . .
3
Fœcal bacilli in 1 cc. and upwards.
No vibrios in 100 cc.
REPORT.
The low total counts and the absence of vibrios in all the samples is a satisfactory feature. This latter
class of organisms was present in samples of Gudiyáttam water during the last quarter as also at the corre
¬ s p o n d i n g p e r i o d o f l a s t y e a r . I n t h e l i g h t o f t h e e x p e r i e n c e g a i n e d d u r i n g t h e l a s t t h r e e y e a r s o f
w a t e r
analysis at the Institute, it does not, however, seem that the presence, in drinking water, of vibrios, whose
pathogenicity is not known, has any influence on public health.
The chemical analysis does not call for special remarks.