124
SAMPLE IX.-TAP IN FRONT OF OLD OOTY CISTERN.
N u m b e r .
L a c t o s e .
S a c c h a r o s e .
D u l c i t e . A d o n i t e . I n u l i n e . V o g e s a n d P r o s k . I n d o l . M o t i l i t y .
G r o u p
Name of Bacilli.
G r o u p
a n d R e m a r k s .
Total colonies per cc. on agar at 37° C.—6,800.
Bile salt lactose, medium.
+
-
1 tube of 20 cc.
...
...
...
...
1
. . .
1
+ +
-
- - - +
- IV B. Coscoroba
... Group I, 2.
2 tubes of 10 cc.
...
2
. . .
3 „ 5 cc.
...
...
...
3
2
+ +
- - - - +
- I B. Vesiculosus
...
„ II, nil.
3 „ 1 cc.
3
. . .
3
+ +
- - - - + - IV B. Coscoroba
...
„ III, nil.
3 „ .1 cc.
...
...
...
...
3
4
+ -
- - - - +
-
I B. Vesiculosus.
3 „ .01 cc. ... ... .. ...
. . .
3
5
+ +
- - - - + - IV B. Coscoroba
...
„
IV, 8.
6
+ +
- - - - + + IV B.106.
Fœcal bacilli in .1 cc, and upwards.
7
+ +
- - - - +
- 1V B. Coscoroba
... Class I, nil.
8
+ +
- - - - + + IV B. 106...
...
„ II, 8.
9
+ +
- - - - + + IV
Do.
No vibrios in 100 cc.
10
+ +
- - - - + + IV
Do.
III, 2.
REPORT.
There is perhaps not very much to complain of in the condition of Ooty water on this occasion, but it is
not so good as it was at this season last year. The water of the Old Ooty Cistern is much the worst showing
a very high total count and ten fœcal germs to the cc. None of the latter is however of a very objectionable
kind. Curiously enough this water is chemically the best. High total counts are also shown by the Tiger
Hill and Upper Dodabetta waters and the latter has one fœcal germ to the cc. but only one very resistant
species was isolated. Moderate counts are seen in the Marlimund water, and quite a low one in the water
from the Kodappamund system which takes the lead in bacteriological purity.
Chemically the Marlimund water shows more organic matter than any of the others, but it is lower than
at this season last year. There is a tendency for the water of Tiger Hill reservoir to show more organic
matter with a high nitrogen-carbon ratio.
Chemical Analyses.
SAMPLE No. I.
SAMPLE No. II.
Physical appearances
.
Colour and
Transparency.
Yellowish and hazy .
Slightly yellowish
but clear.
Smell.
N o n e .
N o n e .
Q U A N T I T A T I V E .
Total solids
...
...
...
...
... Parts per 100,000
. . .
2.600
3 200
Temporary hardness ...
...
...
D o .
Nil.
N i l .
Permanent hardness ...
...
Do....
0.750
0.750
Total hardness
...
...
. .. ...
Do.
. . .
0.750
0.750
Chlorine
...
...
...
...
...
D o .
0 . 2 8 4
0.355
Ammoniacal nitrogen
...
...
...
Do....
T r a c e .
T r a c e .
Albuminoid nitrogen
...
...
...
D o .
0.009
0 . 0 0 4
Oxygen absorbed ( Tidy's Process ) ...
Do.
. . .
0.133
0.038
Nitric nitrogen
...
...
...
...
Do.
. . .
Nil.
N i l .
Q U A L I T A T I V E .
I
Nitrites...
Nil.
Nil.
Sulphates
...
...
...
...
...
...
...
. . .
Nil.
Nil.
Phosphates ...
...
...
...
...
...
...
. . .
Nil.
Nil.
Iron, poisonous metals
...
...
...
...
...
. . .
Nil, nil.
Nil, nil.
SAMPLE NO. VI. SAMPLE NO. IV.
Physical appearances.
Colour and
Transparency.
Yellowish and
hazy.
Yellowish and
hazy.
Smell.
No n e .
None.
Q U A N T I T A T I V E .
Total solids
...
. . .
Parts per 100,000
. . .
3.800
3.400
Temporary hardness
...
...
...
...
Do. . . .
Nil.
Nil.
ermanent hardness
...
...
...
. . .
Do.
. . .
1.000
0.750
Total hardness
...
...
...
Do. . . .
1.000
0.750
C hlorine
...
...
...
...
...
...
Do. . . .
0.426
0.426
Ammoniacal nitrogen
...
...
...
D o .
Trace.
Trace.
Albuminoid nitrogen
Do. . . .
0.019
0.012
Oxygen absorbed (Tidy's Process) ...
...
. .. ...
Do. . . .
0.152
0.114
Nitric nitrogen
...
...
...
...
Do.
. . .
Nil.
Nil.
Q U A L I T A T I V E .
Nitrites
...
...
...
...
....
...
...
...
. . .
Nil.
Nil.
Sulphates
...
...
...
...
...
. . .
Nil.
Nil.
Phosphates
.....
...
...
.....
...
...
. . .
Nil.
Nil.
Iron, poisonous metals
...
...
...
...
...
Nil, nil.
Nil, nil.