36
GUDIYĀ TTAM.
WATER SAMPLES TAKEN-14TH MARCH 1911.
REMARKS.—The river-bed of Koundanya was dry when samples were taken. There was no rain since last analysis. The supply is
constant.
Bacteriological Analyses.
SAMPLE I.—TAP ADJOINING THE STORAGE RESERVOIR.
C o l o n y n u m b e r .
Lact os e.
Sa c c h a r o s e .
Du l c i t e . Ad o n i t e .
I n u l i n .
V o g e s a n d P r o s k .
Indol .
Mo r t i l i t y . Gr oup.
Name of Bacilli.
Group and
Remarks.
Total colonies per cc. on agar at 37° C.
—323.
Bile salt lactose, Medium.
+
—
1 tube of 20 cc. of water taken ...
...
1
. . .
1
+
— — — — —
+ — I B. Vesiculosus ... Group I,10.
2 tubes of 10 cc.
,, ...
2
. . .
2 +
— — — — —
+ — I
Do.
...
II, n i l .
3
„
5 cc.
,, ... ...
3
. . .
3 +
— — — — —
+ — I
Do.
...
„
I I I ,
n i l .
3
,, 1 cc. ,, ... ...
3
. . .
4 +
— — — — —
+ — I
Do.
...
,, IV, nil.
3
„
.1 cc. ,, ... ...
2
1
5 +
— — — — —
+ — I
Do.
3
„ .01 cc.
,,
...
...
1
2
6 +
— — — — —
+ — I
Do.
... Class I, n i l .
7 +
— — — — —
+ — I
Do.
... ,, II, nil.
Fœcal bacilli in .1 cc. and upwards.
8 +
— — — — —
+ — I
Do.
...
„ III,10.
Vibrios present in 100 cc.
9 +
— — — — —
+ — I
Do.
10 +
— — — — —
+ — I
Do.
SAMPLE II.—
TAP NEAR MUHAMMADAN SCHOOL.
1
+ +
— —
—
—
+
— IV B. Coscoroba
... Group I, nil.
Total colonies per cc. on agar at 37° C.—
46.
2 + + — — — — + — IV
Do.
...
„ II, nil.
3 + + — — —
—
+ — IV
Do.
...
, , I I I ,
n i l .
Bile salt lactose, medium.
+
—
4 + + — — — — + — IV
Do.
...
„ IV, 10.
5 + + — — —
—
+ — IV
Do.
6 + + —
— — —
+ — IV
Do.
1 tube of 20 cc. of water taken
...
...
1
...
7 + + — — — — + — IV
Do.
2 tubes of 10 cc.
,,
..
...
2
...
8 + + — — — — + — IV
Do.
... Class I, n i l .
3
„
5 c c . , , . . . . . .
2
1
9 + + — — — — + — IV
Do.
...
„ II, 10.
3
„
1 cc.„
...
... ...
3 10 + +
— — — —
+ — 1V
Do.
...
„ III, nil.
3
„
.1 cc. ,, ...
. . .
3
3
„ .01 cc. ... ...
...
3
Faecal bacilli in 5 cc. and upwards.
Vibrios present in 100 cc.
SAMPLE III.—TAP IN FRONT OF TRAVELLER'S BUNGALOW.
1 + + — — — — + — IV B. Coscoroba
... Group 1, n i l .
Total colonies per cc. on agar at 37° C.—
32.
2 + +
— — — —
+ — IV
Do.
, , I I ,n
i l .
3 + + — — — — + — IV
Do.
...
„ III, ni l .
Bile salt lactose, medium.
+
—
4 + + — — — — + — I V
Do.
. . .
, , I V 1 0
.
5 +
+
— — — —
+ — IV
Do.
6 + + — — — — + — IV
Do.
1 tube of 20 cc. of water taken ...
...
1
...
7 + + — — — — + — IV
Do.
8 + + — — — — + — IV
Do.
... Class I, ni l .
9 + + — — — — + — IV
Do.
. . . ,,
II, 10.
2 tubes of 10 cc.
, , . . . . . .
2
. . .
10 +
+ — — — — + — IV
Do.
. . .
, , I I I ,
n i l .
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.
REPORT.
Again there are undesirable features in the results got with samples down from the Gudiyāttan
water-supply. On this occasion there are vibrios in all the samples, including that taken from the tap nextto
the Service Reservoir In June last these undesirable organisms were only found in the distributary system
The fœcal germs are also increased in this sample, but they are unobjectionable in kind. But for the presence
of vibrios the samples drawn from the pipes could be called bacterially satisfactory, the total counts being low
and the fœcal germs few in number and of one fairly resistant kind.
Chemically the improvement noted previously has not been maintained. The water contains more tot's
solids which appear to be chiefly alkaline sulphate, and the oxidised nitrogen has increased. There is also
rather more organic matter of animal origin than there was in the corresponding quarter of last year.