3
COIMBATORE CENTRAL JAIL.
WATER SAMPLES TAKEN—1sT MAY 1910.
REMARKS.—There has been 28 . 4 inches of rain since last analysis.
Bacteriological Analyses.
SAMPLE I.— NEW WELL WATER.
C o l o n y n u mb e r .
L a c t o s e .
Sa c opa r os e . Dul ci t e.
A d o n i t e .
I n n u l i n
V o g e s a n d P r o s k .
Indol
Mot i l i t y.
G r o u p .
Bacillus.
Group and
Remarks.
Total colonies per cc. on agar at 37°—110.
+
–
Bile salt lactose, medium.
Group
I, nil.
1 tube of 20 cc.
..
..
.. ..
1
..
1
+ + – + — + — — IV
B. Lactis ærogenes
. ..
2
t u b e s o f
10 cc. . . . . . .
1
1
2 +
+ – + – + — — IV
Do.
.. ,,
II, n i l .
3
5 cc. . . . . . .
2
1
3 + + – + – + – – IV
Do.
.. ,,
III, n i l .
3
, ,
1 cc . . . . . .
. .
3
4
+ + – + – + – – IV
Do
..
IV, 10.
71
3
, ,
.1 cc. . . . . . .
. .
3
5
+ + – + – + – – IV
Do.
3
, ,
.01 cc.
..
. .
3
6 + + – + – + – – IV
Do.
7
+ + – + – + – – IV
Do.
.. Class
I, nil.
8
+ + – + – + – – IV
Do. .. ,,
II, 10.
Fœcal bacilli in 5 cc and upwards.
,,
III, n i l .
9 + + – + – + – – IV
Do.
..
No vibrios—in 100 cc.
10 + + – + – + –
– IV
Do.
SAMPLE II.—OLD WELL WATER.
1 +
– – – – – + – I B. Vesiculosus
.. Group
I, 6.
,,
II, nil.
+ — — + —
– + —
I B. Acidi Lactici ..
+
—
2
3 ++ + – – – – + – IV B. Coscoroba
,, III, 1.
,,
IV, 3.
Total colonies per cc. on agar at 37°—460.
4 ++ + — — — + — III B. Neopolitanus
..
Class
I, nil.
Bile salt lactose, medium.
5 ++ — — — — + — IV B. Coscoroba
..
6 + — — + — — + —
I B. Acidi Lactici
..
„
II, 5.
7 +
+ — I B. Vesioulosus
..
„
III, 5 .
1 tube of 20 cc. .. .. .. ..
8 +
+ – – – + – + IV B. Cloacæ.
2 tubes of 10 co.
..
..
..
..
2
. .
9 + — — — — – —
I B. Vesioulosus.
3 If
5 cc.
..
..
..
..
3
. .
10
+ – – – – + — I B.
Do.
3
, ,
1 cc.
..
..
..
..
3
3
, ,
.1 cc.
..
2
„
.01 cc.
..
..
..
..
..
3
Fcecal bacilli in 1 cc. and upwards.
No vibrios—in 100 cc.
REPORT.
There is nothing new to report in the waters from the two jail wells Neither can by any stretch of the
imagination be held to be good waters but the objection to them is chemical not bacteriological. They contain
a huge amount of total solids, they are very hard and very salt. Most of the organic matter would appear to
have been oxidised. In all these points the water of the new well is worse than that of the old.
Bacteriologically there is not much to note, but the relative position of the water from the two wells is
reversed. The new well water is the better and from this point of view alone would be classed as a good water.
The old well water is worse. It contains more germs of animal origin and too many species are represented,
which points to extensive pollution.
Chemical Analyses.
SAMPLE II.
S A M P L E I .
Colourless and
clear.
Colourless and
c l e a r .
Physical appearanoes.
Colour an
d Transparency'.
Smell.
None.
None.
QUANTITATIVE.
Total solids
..
..
.. .. ..
Temporary hardness .. . . . . . .
Permanent hardness .. . . . . . .
Total hardness ..
.. . . . . . .
Chlorine .. .. .. .. ..
Ammoniacal nitrogen ..
. .
. .
. .
Albuminoid nitrogen .. . .
Oxygen absorbed (Tidy's Process) . . . . . . . . . .
..
Nitric nitrogen
..
Parts per 100,000 ..
200.600
225.000
Do. . .
42.500
50.000
Do.
. .
42.500
50.000
Do.
. .
85.000
100.000
Do.
. .
51.475
49.700
Do.
. .
Trace.
0.004
Do.
. .
Trace.
0.003
Do.
. .
0.013
0.013
Do.
. .
0.425
0 462
QUALITATIVE.
Nitrites..
..
..
. .
. .
. .
. .
. .
N
i l .
Nil.
Sulphates
..
..
. .
. .
. .
..
. .
Marked.
Marked.
Phosphates
..
..
. .
. .
. .
..
..
..
. .
Nil.
Nil .
Iron, poisonous metals
..
..
..
.. . .
. .
Nil, nil.
Nil, nil.