28
SAMPLE IX.—KODAPPAMUND RESERVOIR.
Total colonies per cc. on agar at 37° C.—410.
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 nul i ne.
V o g e s a n d P r o s k .
Indol .
Mo t i l i t y .
Gr oup.
Name of Bacilli.
Group and
Remarks.
Bile salt lactose, medium.
+
-
1 tube of 20 cc.
. . .
. . .
. . .
. . .
1
. . . 1
+ - - - - - + - I B. Vesiculosus . . . Group I, 6.
2 tubes of 10 cc.
...
...
...
. . .
2
. . .
2 + + - - - - - + IV B. 109 ...
...
,, II,n i l .
3 , , 5 c c .
. . .
. . .
. . .
. . . 3
. . .
3 + + - - - - + + IV B 106
...
. . . ,, III,n i l .
3
,,
1 cc.
...
...
... ...
2
1 4 + - - - - - + + I B. Grunthal
... ,, IV, 4.
3
,,
. 1 c c .
. . .
. . .
. . .
. . . 1
2 5 + - - - - - + + I
Do.
3
,,
. 0 1 c c .
...
...
. . .
. . . 1
2
6 + + - - - - + + IV B. 106.
•••
7 + - - - - - + + I B. Grunthal.
Fœcal bacilli in 1 cc. and upwards.
8 + + - - - - + + IV B. 106 ...
... Class I, n i l .
9 + - - - - - + + I B. Grunthal
. . .
,,
II, 3.
No vibrios in 100 cc.
10 + - - - - - + + I
Do.
..
,,
III, 7.
REPORT.
Bacteriologically all the samples show higher total counts than on the last occasion as also a much
larger number of fœcal organisms per c.c. The bacterial deterioration is borne out by the results of the
chemical analysis—the figures for albuminoid nitrogen and oxygen absorption being on the whole higher
than on the last occasion the water was examined ; the sample from the Old Ooty Cistern shows almost the
same figures as on the previous examination. The heavy fall of rain since the last analysis will account for
these bad results.
Chemical Analyses.
SAMPLE No. I.
SAMPLE No. II.
Physical appearances.
Colour and
Transparency.
Yellowish and hazy.
Slightly yellowish
but clear.
Smell.
None.
None.
QUANTITATIVE.
Total solids ... . . .
. . . . . . ... Parts per 100,000 ...
2.800
2.000
Temporary hardness
. . .
. . .
. . .
Do. _
. . .
Nil.
Nil.
Permanent hardness
. . .
. . .
. . .
Do.
...
0.500
0.500
Total hardness
...
. . .
... ...
Do.
...
0.500
0.500
Chlorine
...
. . .
...
. . .
. . .
Do.
...
0.284
0.284
Ammoniacal nitrogen
...
. . .
. . .
Do.
. . .
0.004
Trace.
Albuminoid nitrogen
. . .
. . .
. . .
Do.
...
0.018
0.010
Oxygen absorbed (Tidy's Process)
. . .
Do.
. . .
0.127
0.055
Nitric Nitrogen ... . . .
. . .
. . .
Do.
...
Trace.
Trace.
QUALITATIVE.
Nitrites
...
. . .
. . .
. . .
. . .
. . .
. . .
. . .
. . .
Nil.
Nil.
Sulphates
...
. . . ...
. . .
. . .
. . .
. . .
. . .
Nil.
Nil.
Phosphates ... ... ...
... ...
...
. . .
. . .
. . .
Nil.
Nil.
Iron, poisonous metals . . . ...
... ... ...
... ... ...
Nil, Nil.
Nil, Nil.
SAMPLE No. IV.
SAMPLE No. VI.
Physical appearances.
Colour and
Transparency.
Yellowish and hazy.
Yellowish and hazy.
Smell.
None.
None.
QUANTITATIVE.
Total solids ... ... ...
. . . . . .
Parts per 100,000 ...
3.200
3.000
Temporary hardness
. . .
. . .
. . .
Do.
...
Nil.
Nil.
Permanent hardness
... ... . . .
Do.
. . .
0.500
0.750
Total hardness
... ... ... . . .
Do.
...
0.500
0.750
Chlorine
...
. . .
. . .
. . .
. . .
Do.
...
0.355
0.355
Ammoniacal nitrogen
. . .
. . .
. . .
Do
...
Trace.
Trace.
Albuminoid nitrogen
. . . ... ...
Do.
. . .
0.021
0.023
Oxygen absorbed (Tidy's Process)
. . .
Do.
. . .
0.136
0.155
Nitric nitrogen
... ... . . .
. . .
D o .
...
T r a c e .
Trace.
QUALITATIVE.
Nitrites ...
...
. . .
. . .
. . .
. . .
. . .
. . .
. . .
Nil. Nil.
Sulphates ... ... ... ... ...
. . .
. . .
...
. . .
Nil.
Nil.
Phosphates ... ...
. . .
...
. . . ...
. . .
. . .
. . .
Nil.
Nil.
Iron, poisonous metals ...
...
. . . ... ... ... . . .
. . .
Nil, Nil.
Nil, Nil.