NationalLibraryOfScotland/medical-history-of-british-india huggingface dataset:
82
SAMPLE V.—A TAP IN WESTERN CORNER IN KILCHUPET ROAD.
Total colonies per cc. on agar at 37°—250.
N u m b e r .
L a c t o s e .
S a c o h a r o s e .
D u l o i t e . a d o n i t e .
I n u l i n .
V o g e s a n d P r o s k .
I n d o l . G r o u p .
Name of bacilli.
Group
Remars.
Bile salt lactose, medium.
+
-
1 tube of 20 cc.
..
..
.. ..
1
. . 1 + - - - - +
I B. Vesiculosus
G r o u p I , 9 .
2 tubes of 10 cc.
2
. .
2 + - - - - + - I
D o . , , I I , n i l .
3 ,, 5 cc.
2
1
3 + - - - - + - I
Do.
,, III, nil.
3 „ 1 cc.
. .
3
4 + + - - - + - IV
B . C o s c o r o H a
, , I V , 1 .
3 „
1 cc.
• •
• •
..
3
5 + — — —
— + — I
..
B. Vesiculosus
3 „ 01 cc.
. . 3
6 + -
- -— - + -
I
Do.
. .
7 + - - - - + - - - -
I
Do.
.. Class I, nil
Fœcal bacilli in 5 co. and upwards.
8 + - - - - + + I B. Grunthal
..
,, II, 9..
, ,
9 + - - - - - - I B. Mutabilis
..
, , I I I , 9 .
No vibrios in 100 cc.
1 0 + - - - - + - I B. Vesiculosus ..
REPORT.
The Adoni water is definitely on the down grade and shows on this occasion much the worst results of
any got in the last twelve months. Is there anything to account for this ? If anything can he detected
and is remediable it ought to be seen to at once, as the water is in a thoroughly unsatisfactory condition.
It has always been bad chemically and now it shows signs of recent and extensive excremental pollution,
The water of the tank shows a reduction in the fœcal germs but a large addition to the others. This is not
the first time that this sort of thing has occurred. Filtration seems to have added more germs than it has
taken away but the objectionable germs. of Class II have disappeared which is perhaps a slight gain. The
water from the tap in front of the Municipal Hospital has undergone further improvement and is really of
fair quality bacteriologically. The water from the tap in the Kilchupet road is not so good as there are a
good many species of fœcal germs. These are however of the more resistant kinds, and the sample cannot
be considered bad.
Chemically the water is much as before and that was bad. It shows a high amount of organic matter
of animal origin, and a good deal of oxidised nitrogen. In respect of the latter the condition of the water
fluctuates a good deal, there are regrettably no occasions on which the unoxidised matter is absent.
Chemical Analyses.
SAMPLE II.
SAMPLE V.
Physical appearances.
Colour and
Transparency.
Yellowish and opaque. Yellowish and opaque
Smell.
None.
None.
Total solids
.
..
QUANTITATIVE.
..
..
..
Parts per 100,000 ..
30 000
25.000
Temporary hardness ..
..
..
..
Do.
2-500
2.500
Permanent hardness ..
..
..
..
Do.
2.500
2.500
Total hardness ..
..
..
..
..
Do.. •
5.000
5-000
Chlorine
..
..
..
..
Do... 1.065
1-065
Ammoniacal nitrogen ..
..
..
..
Do.
..
0.012
0.010
A lbumin oid nitrogen ..
..
..
..
Do.
..
0.184
0.157
Oxygen absorbed (Tidy's Process) ..
..
Do.
0.677
0.542
Nitric nitrogen..
Do.
0.050
0.125
QUALITATIVE.
Nitres ..
..
..
..
..
.
• •
. .
. .
Nil.
_Nil.
Sul phates
..
. .
Trace.
Trace.
Phosphates
..
..
..
..
..
• •
..
• .
• •
Nil.
Nil.
Iron, poisonous metals
Nil.
Nil
84
Chemical Analyses
SAMPLE I.
SAMPLE III.
Physical appearances.
C o l o u r a n d
T r a n s p a r e n c y .
White and hazy.
White and hazy.
Smell.
None.
None.
Total
solids
10·400
1 0 · 6 0 0
Temporary hardness
3·500
3 · 5 0 0
Permanent hardness
2·000
2 · 0 0 0
Total hardness
5·500
5 · 5 0 0
Chlorine
0·887
0 · 8 8 7
Ammoniacal nitrogen
T r a c e .
Trace.
Albuminoid nitrogen
0·002
Trace.
Oxygen absorbed
0·010
0·008
Nitric nitrogen
Trace.
Trace.
QUALITATIVE.
Nitrities
Nil.
Nil.
Sulphates
Trace.
Trace.
Phosphates
N i l
Nil .
Iron, poisonous metals
Nil, nil.
Nil, nil.
88
REPORT.
The water of the Cauvery River at Trichinopoly is usually pretty impure and on the present occasion
does not vary from the usual. With a hundred fœcal organisms to the cc. and the susceptible organisms
of Class I, together with a strikingly large variety of species we have all the signs of recent extensive and
highly objectionable pollution.
Sample No. II taken from the first tap in headworks after the Infiltration Gallery is very much better,
and but for the high total count organisms other than excremental ones, would be considered a fairly
pas s abl e wat er . The f œcal ger ms have been decr eas ed a hundr ed f ol d, t he var i et i es i dent i f i ed t o t wo, and
neither of these belongs to the susceptible Class I.
Samples III and IV again are not so good. These were drawn from a tap in the Southern Corner of
Teppakulam near Clive's House and from a tap outside the Station Compound respectively. They show a
marked increase in the number of varieties present. Usually the samples collected in these situations have
given better results.
Chemically there is not very much to note. Passage through the Infiltration Gallery has increased the
hardness but has reduced the organic matter. This latter is not present in large amount, but what there is,
is of animal origin.
Chemical Analyses.
SAMPLE I.
SAMPLE IV.
Physical appearances.
Colour and
Transparency.
slightly yellowish but
clear.
Yellowish and hazy.
Smell.
None.
None.
QUANTITATIVE.
Total solids
..
..
..
..
..
Parts per 100,000 ..
19.000
22.400
Temporary hardness
..
..
..
Do. ..
9.000
10.500
Permanent hardness
..
..
..
Do.
..
1.000
2.500
Total hardness
..
..
..
..
Do.
10.000
13.000
Chlorine
..
..
..
• •
Do .
1 . 4 2 0
1.420
Ammoniacal nitrogen
..
..
..
Do.
0 . 0 0 8
0.005
Albuminoid nitrogen
..
..
..
Do...
0.014
0.006
Oxygen absorbed ( Tidy's Process) ..
..
Do.
0.053
0.027
Nitric nitrogen
..
..
..
••
Do.
Trace.
0.025
QUALITATIVE.
Nitritos
..
..
..
..
..
••
..
••
..
Nil.
Nil.
Sulphates
..
..
..
..
..
••
..
..
..
Present.
Present.
Phosphates
..
..
..
..
..
..
..
..
..
Nil.
Nil.
Iron, poisonous metals
• .
..
..
••
..
..
• •
Nil.
Nil.
90
pipes for long, so we are driven to the conclusion that this highly objectionable form of pollution is leaking
from the outside, a supposition that gains support from the fact that the supply is intermittent. The pip
e s should be carefully overhauled for possible leaks.
Chemically the water is on the hard side but is otherwise fair. The water from the distributary syste
m
is considerably better than the raw river water, but the organic matter it contains is more definitely of animal
origin. Taken along with the results obtained on bacteriological examination this again points to leakage
into the pipes.
Chemical Analyses.
SAMPLE I.
SAMPLE III.
Physical appearances.
Colour and
Transparency.
Brownish and
opaque.
Slightly yellowish
but clear.
Smell.
None.
None.
QUANTITATIVE.
Total solids
..
..
..
..
..
..
.. Parts per 100,000 ..
45. 000
32.000
Temporary hardness ..
..
..
.. ..
..
Do.
..
12.000
12.000
Permanent hardness ..
..
..
..
..
•
Do.
..
1.000
2.000
Total hardness ..
..
..
..
..
..
..
Do.
..
13.500
14.000
Chlorine
..
..
..
..
..
..
..
Do.
..
2.840
2.840
Ammoniaca] nitrogen ..
..
..
..
..
..
Do.
• •
0.011
0.004
Albuminoid nitrogen ..
..
..
..
..
..
Do.
..
0.033
0.008
Oxygen absorbed ( Tidy's Process) ..
..
..
..
Do.
..
0.226
0.040
Nitric nitrogen
..
..
..
..
..
..
Do.
..
Trace.
0.037
QUALITATIVE.
Nitrites
..
..
..
..
..
..
..
..
..
..
...
Nil.
Nil.
Sulphates
..
..
..
..
..
..
..
..
..
..
. .
Present.
Present.
Phosphates
..
..
..
..
..
..
..
..
..
..
..
Nil.
Nil.
Iron, poisonous metals
..
..
..
..
..
..
..
..
..
Nil.
Nil.
91
GUNTUR.
WATER SAMPLES TAKEN—24TH APRIL 1910.
REMARKS.—There was no rain since last analysis. The supply is intermittent and insufficient to meet the demand.
Bacteriological Analyses.
SAMPLE I.—FROM THE SPRING.
C o l o n y n u m b e r Lactose.Sa c c ha r os e .Dulcite.Adoni t e.Inulin.
V o g e s a n d P r o s k . Indol.Mot i l i t y.Group.
Name of Bacilli
Group and
Remarks.
Total colonies per cc. on agar at 37°—3,780.
Bile salt lactose, medium.
+ -
1 tube of 20 cc.
1
1 + + - + - + - -
I V B. Lactis ærogenes
Group I, nil.
2 tubes of 10 cc.
2
2 + + - + - + - -
I V
Do.
" II, nil.
3 " 5 cc.
3
3
+ + - + - + - -
I V
Do.
" III, nil.
3 " 1 cc.
3
4 + + - + - + - -
I V
Do.
" IV, 10.
3 " .1 cc.
3
5 + + - + - - - -
I V B. Gasoformans
Class I, 1.
3 " ·01 cc.
3
6 + + - + - - - -
I V
Do.
" II,9.
Fœcal bacilli in 10 cc. and upwards.
7 + + - + - + - -
I V B Lactis ærogenes
" III, nil.
8 + + - + - - - -
I V B. Gasoformans.
9 + + - + - + - -
I V B. Lactis ærogenes.
No vibrios in 100 cc.
10 + + - + + - -
-
I V B 99.
SAMPLE II.—FILTERED WATER BEFORE IT PASSES THROUGH
THE MASONRY CONDUIT.
1 + - - - - - + -
I B. Vesienlosus
Group I, 8.
2 + - - - - - + -
I
Do.
" II, nil.
Total colonies per cc. on agar at 37°—820.
3 + - - - - - + -
I
Do.
" III, nil.
4 + - - - - - + -
Do.
" 1V, 2.
Bile salt lactose, medium.
+
-
5 + + - - - - + -
I V B. Coscoroba.
6 + - - - - - + -
I B. Vesiculosus.
7
+ + - - - - + -
I V B. Coscoroba. Class I, nil .
1 tube of 20 cc.
1
8 + - - - - - + -
I B. Vesiculosus
" II,2.
2 tubes of 10 cc.
2
9 + - - - - - + -
I
Do.
" III, 8.
3 " 5 cc.
3
10 + - - - - - + -
I
Do.
3 " 1 cc.
3
3 " ·1 cc.
3
3 " ·01 cc.
3
Fœcal bacilli in 1 cc. and upwards.
No vibrios in 100 cc.
SAMPLE III.—FROM THE SERVICE RESERVOIR.
1 + + + - - - + -
I I I B. Neapolitanus
Group I, 6.
2 + - - - - - + -
I B. Vesiculosus
" II, nil..
Total colonies per cc. on agar at 37°—Cannot be counted.
3 + - - - - - + -
I
Do.
" III, 2.
4 + - - + - - + -
I B. Acidi Lactici
" IV, 2.
5 + - - - - - + -
I B. Vesiculosus.
Bile salt lactose, medium.
+
-
6 + - - - - - + -
I
Do.
Class I, nil .
7 + + - - - - + -
I V B. Coscoroba
II, 5.
8 + + - - - - + -
I V
Do.
III, 5.
1 tube of 20 cc.
1
9 + - -
- - - + -
I B. Vesiculosus.
2 tubes of 10 cc.
2
10 + + + - - - + -
I I I B. Neapolitanus.
3 " 5 cc.
1
2
3 " 1 cc.
3
3 " ·1 cc.
3
3 " ·01 cc.
3
Fœcal bacilli in ·1 cc. and upwards.
No vibrios in 100 cc.
SAMPLE IV.—WESTERN END TAP. FOUNTAIN No.19 OPPOSITE
TO MUSTAN SAHEB'S TOMB,
1
+ - - + - - + -
I B. Acidi Lactici
Group I, 4.
2 + - - + - - + -
I
Do.
" II, 4.
Total colonies per cc. on agar at 37°—630.
3
+ + + - - - + -
I I I B Neapolitanus
" III, 2.
4 + - + - - - + -
I I B. Schæfferi
" IV, nil.
5 + + + + - - + -
I I I B. 66.
Bile salt lactose, medium.
+
-
6 + - - - - - + -
I B. Vesiculosus.
7 + - + - - - + -
I I B. Schæfferi
Class I, 4.
1 tube of 20 cc.
1
8 + - - - - - + -
I B. Vesiculosus
" II, 4.
2 tubes of 10 cc.
2
9 + - + - - - + -
I I B. Schæfferi
" III, 2.
3 " 5 cc.
3
10 + - + - - - + -
I I
Do.
3 " 1 cc.
2
1
3 " ·1 cc.
2
1
3 " ·01 cc.
1
2
Fœcal bacilli in ·1 cc. and upwards.
No vibrios in 100 cc.
92
SAMPLE V.—FOUNTAIN No. 12. SOUTHERNMOST CORNER IN OLD
MADRAS ROAD.
C o l o n y n u m b e r .
Lact ose.
Saccharose.
Dul c i t e.
Adoni t e . I nul i n.
V o g e s a n d P r o s k .
I ndol .
Mot i l i t y.
Gr oup.
Name of bacilli.
Group
and
remarks.
Total colonies per cc. on agar at 37°—1,260.
Bile salt lactose, medium.
+
—
1 tube of 20 cc.
..
..
..
..
1
..
1 + — — + — — + — I B. Acidi Lactici
.. Group I, 5.
2 tubes of 10 cc. ..
..
..
. .
2
..
2 + ——+ — — + — I
Do.
.. ,,
II, nil.
3
,,
5 cc.
. .
. .
. .
. .
3
. .
3 + + — — — — + — IV B. Coscoroba ..
..
„ III, nil.
3
„
1 cc. ..
..
..
..
3
..
4 + — — — — — — —
I B. Mutabilis ..
. . ,, IV, 5.
3
.1 cc.
1
2
5 + + ————+ — IV B. Coscoroba ....
3
„
. 0 1 c c .
..
3
6 + + —— ——+ — IV
Do.
7 + — — — ——+ — I B. Vesiculosus
.. Class I, nil.
Fœcal bacilli in 1 cc. and upwards..
8 + ——— —— + — I
Do...
..
,, II, 7,
9 + + —+ ——+ — IV B. 101 .. ..
„ III, 3,
No vibrios in 100 cc.
10 +
+ — —
— + — IV B. Coscoroba ..
..
REPORT.
The spring water contains a very high total count but very few of the germs present are of animal
origin. It is somewhat unusual to find Class I represented when the experimental germs are so few as one
in ten cc.'s. Possibly a quite temporary cause was accountable for this. Passing through the filters has
only spoiled the water; it contains ten times the number of fœcal germs although the total count is
considerably reduced.
'The water of the service reservoir is very much worse again, in fact progressive deterioration occurs as
the water passes from one part of the system to the next The climax is reached with the water from Tap.
No. 19 opposite Musthan Saheb's Tomb where the water is frankly bad and contains a large number of germs
of the susceptible Class I. Probably the intermitttency of the supply together with imperfectly jointed
pipes has resulted in surface pollution being sucke 1 into the pipes. Sample V (Fountain No. 12) is rather
better but is nothing like so good as the original spring water. It shows a large admixture of varieties
which points to pollution of an extensive if not very recent kind.
Chemically the water shows high total solids much of which is soluble sulphate. The figure for
oxidised nitrogen is also high pointing to old standing pollution.
Chemical Analyses.
SAMPLE II .
SAMPLE V.
Physical appearances.
Colour and
Transparency.
Colourless and clear.
Colourless and clear.
Smell.
None.
None.
QUANTITATIVE.
Total solids ..
..
..
..
..
Parts per 100,000 ..
58.000
59.400
Temporary hardness ..
..
..
..
Do...
14.500
14.500
Permanent hardness..,
..
..
..
Do.
..
0.500
0.500
Total hardness
..
..
..
..
Do.
15.000
15.000
Chlorine
..
..
..
. .
Dc.
..
2.130
2 . 1 3 0
Ammoniacal nitrogen
..
..
..
Do.
..
0.006
0.005
Albuminoid nitrogen
. . ..
Do...
0.004
0.003
Oxygen absorbed ( Tidy's Process) ..
..
D o .
. .
0.020
0.026
Nitric nitrogen
..
..
..
..
Do.
0.112
0 . 1 5 0
QUALITATIVE.
Nitrites
..
..
..
..
..
..
..
..
Nil.
Nil.
Sulphates
..
..
..
..
..
. . . . . . ..
Present.
Present.
Phosphates ..
..
..
..
..
..
..
..
Nil.
Nil.
Iron, poisonous metals .. .. .. .. .. .. ..
Nil.
Nil.
93
COONOOR.
WATER SAMPLES TAKEN—1ST MAY 1910.
REMARK,—The storage reservoir was full and overflowing. The supply is intermittent. There has been about. 4•81 inches of rain since
last analysis
Bacteriological Analyses.
SAMPLE I.—STORAGE RESERVOIR.
N u m b e r .
Lact ose.
S a c c h a r o s e .
Dul ci t e. A d 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.Motility.
G r o u p .
Name of bacilli.
Group and
remarks.
Total colonies per cc. on agar at 37°—170.
Bile salt lactose, medium.
+
-
1 tube of 20 cc.
1
1
+ - - - - - + + I
B. Grunthal
Group I, 7.
2 tubes of 10 cc.
2
3 " 5 cc.
3
2 + - - + - - + +
I B. 1
" II, nil.
3 " 1 cc.
2
1
3 + - - - - - + +
I B. Grunthal
" III, nil.
3 " ·1 cc.
1
2
4 + + - - - - + +
I V B. 106
" IV, 3.
3 " ·01 cc.
3
5 + - - - - - + +
I B. Grunthal.
Fœcal bacilli in 1 co. and upwards.
6 + + - - - - + +
I V B. 106
Class I, nil .
7 + - - - - - + +
I B. Grunthal
" II, 4.
8 + + - - - - + +
I V B. 106
" III, 6.
No vibrios in 100 cc.
9 + - - - - - + +
I B. Grunthal.
10 +
- -
- - - + +
I
Do.
SAMPLE II.—FROM THE SERVICE RESERVOIR.
1
+ - - - - - + -
I
B. Vesiculosus
Group I, 4.
Total colonies per cc. on agar at 37°—230.
2 + - - - - - + -
I
Do.
" II, nil.
3 + - - + - - + -
I B. Acidi Lactici
" III, 1.
Bile salt lactose, medium.
+
-
4 + + - - - - + +
I V B. 106
" IV, 5.
5 + + + - - - - -
I I I
?
6 + + - - - - + -
I V B. Coscoroba
Class I, nil.
7
+ - - -
- - + +
I B. Grunthal
" II, 6.
1 tube of 20 cc.
1
8 + + - - - - + -
I V B. Coscoroba
" III,3.
2 tubes of 10 cc.
2
9 + + - - - - + -
I V
Do.
Undetermined, 1.
3 " 5 cc.
3
10 + + - - - - + +
I V B.106.
3 " 1 cc.
2
1
3 " ·1 cc.
2
1
3 " ·01 cc.
1
2
Fœcal bacilli-in ·1 cc. and upwards.
No vibrios in 100 cc.
SAMPLE III.—FOUNTAIN IN FRONT OF POST AND TELEGRAPHIC
OFFICE.
1
+ + + - - - + +
I I I
B. 71
Group I, 6.
Total colonies per cc. on agar at 37°—60.
2
+ - + - - - + -
I I
B. Schæfferi
" II, 1.
3
+ - - - - - + -
I
B. Vesiculosus
" III, 2.
4+ - - - - - + -
I
Do.
" IV, 1
Bile salt lactose, medium.
+
-
5
+ + + - - - + -
I I I
B. Neapolitanus
Class I, 1
6
+ - - + - - + -
I
B. Acidi Lactici
" II, 4.
7
+ - - - - - + -
I
B. Vesiculosus
" III, 5.
8
+ - - - - - + +
I
B. Grunthal.
1 tube of 20 cc.
1
9
+ + - - - - + -
I V
B. Coscoroba.
2 tubes of 10 cc.
2
10 + - - - - - + -
I
B. Vesiculosus.
3 " 5 cc.
3
3 " 1 cc.
3
3 " ·1 cc.
1
2
3 " ·01 cc.
3
Fœcal bacilli in 1 cc. and upwards.
No vibrios in 100 cc.
SAMPLE IV.—FROM A FOUNTAIN IN FRONT OF CHOULTRY NEAR
RAILWAY STATION.
1
+ - - - - - + -
I
B. Vesiculosus
Group I, 8.
Total colonies per cc. on agar at 37°—130.
2
+ - - - - - + -
I
Do.
" II, nil.
3
+ - - - - - + -
I
Do.
" III
nil.
Bile salt lactose, medium.
+
-
4
+ - - - - - + -
I
Do.
" IV,2.
5
+ - - - - - + -
I
Do.
6
+ + - - - - + +
I V
B. 106.
1 tube of 20 cc.
1
7
+ + - - - - + +
I V
Do.
Class I, nil.
2 tubes of 10 cc.
2
8
+ - - - - - + -
I
B. Vesiculosus
" II, 2.
3 " 5 cc.
3
9
+ - - - - - + +
I
B. Grunthal
" III,8.
3 " 1 cc.
2 1
10
+ - - - - - + +
I
Do.
3 " ·1 cc.
1 2
3 " ·01 cc.
3
Fœcal bacilli in 1 cc. and upwards.
No vibrios in 100 cc.
24
94
REPORT.
The water of the storage reservoir on this occasion is not very bad; it has been better but it has
also been a good deal worse. Generally the results obtained are those typical of dry weather, though in
the quarter of last year corresponding to this one the results obtained were better and more marked. The
water of the service reservoir is as usual definitely worse. There are ten times as many fœcal germs and a
greater variety of species. Generally speaking the sample taken from the fountain in front of the Post
and Telegraph Office gives better results than the but we have the suggestive appearance of a
member of the susceptible Class I. This suggests suction into the pipes which in a hilly place like Coonoor
would probably be excessive if an intermittent service were adopted. The number of varieties in this
asmple is also far too high. Sample IV taken from a fountain in front of the choultry near the Railway
station is the best from the distributary system on this occasion and is as good as the water of the storage
reservoir.
Chemically the waters are excellent.
Chemical Analyses.
Physical appearances.
SAMPLE I.
SAMPLE IV.
Colour and
Transparency.
Yellowish but clear.
Yellowish and hazy.
Smell.
None.
None.
QUANTITATIVE.
Total solids .. .. .. .. ..
Parts per 100,000 ..
2.800
3.000
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
0 . 0 0 3
Albuminoid nitrogen
..
..
..
Do.
. .
0.012
0.008
Oxygen absorbed (Tidy's _Process) .. ..
Do. ..
0.093
0.106
Nitric nitrogen ..
..
..
..
..
Do.
. .
Nil.
Nil.
QUALITATIVE.
Nitrites .
_
..
..
..
..
..
..
..
..
Nil.
Nil.
Sulphates
..
..
..
..
..
..
..
..
..
Nil.
Nil.
Phosphates
..
..
..
..
..
..
. . . .
Nil.
Nil.
Iron, poisonous metals
..
..
..
..
..
..
..
Nil.
Nil.
95
NELLORE MUNICIPALITY.
WATER SAMPLES TAKEN—7TH MAY 1.910.
REMARKS.—Water was not flowing in the Northern Penner, but the samples were taken from stagnant water found in the bed of the
river. The supply is intermittent. There has been about 0·30 inch of rain since last analysis.
Bacteriological Analyses.
SAMPLE I.—FROM THE RIVER BED OF NORTHERN
PENNAR—UNFILTERED WATER.
Co l o n y n u mb e r .
Lact ose.Sacchar ose.Dul ci t e.Adoni t e.Inul i n. V o g e s a n d P r o s k . Indol .Mot i l i t y.Group.
Name of baoilli.
Group and
remarks.
Total colonies per cc. on agar at 37°—840.
Bile salt lactose, medium.
+
−
1 tube of 20 cc.
1
1
+ − − − − − + −
I B. Vesioulosue
Group I, 6.
2 tubes of 10 cc.
2
2 + − − − − − + −
I
Do.
„ II, nil.
3 „5 cc.
3
3 + − − − − − − −
I B. Mutabilis
„ III, 2.
3 „ 1 cc.
3
4 + − − − − + + −
I B. 6.
„ IV, 2.
3 „ ·1 cc.
3
5 + + + + − + − − III B. 67
3 „ · 0 1
c c .
3
6 + − − − − − + −
I B. Vesiculosus.
Fœcal bacilli in ·1 cc.
7 + − − − − − + −
I
Do.
Class I, nil.
8 + + − + − − + − IV B. 101
„ II, 5.
9 + + − + − + − −
I V
B. Lactis ærogenes.
„ III, 5.
No vibrios—in 100 cc.
10 + + + + − + − −
I I I
B. 67.
SAMPLE II.—FROM THE COLLECTING WELL—FILTERED WATER.
N o l a c t o s e f e r m e n t e r s c o u l d b e i s o l a t e d .
Total colonies per cc. on agar at 37°—4,410.
Bile salt lactose, medium.
+
−
1 tube of 20 cc.
1
2 tubes of cc.
1
1
3 ,, 5 cc.
3
3 ,, 1 cc.
3
3 ,, ·1 cc.
3
3 „ ·01 cc.
3
Fœcal bacilli in 60 cc. and upwards.
No vibrios—in 100 cc.
SAMPLE III.—FROM A TAP IN EASTERN CORNER—FOUNTAIN
No. 3, NAVVAPET.
1 + + − + − + −
−
IV B.Lactis ærogenes. Group I, nil.
Total colonies per cc. on agar at 37°—3,150.
2 + + − + − + − − IV
Do.
„ II, nil.
3 + + − + − + − −
IV
Do.
„ III, nil.
4 + + − + − + − − IV
Do.
„ IV, 10.
Bile salt lactose medium.
+
−
5 + + − + − + − − IV
Do.
6
+ + − + − + − −
IV
Do.
1 tube of 20 cc.
Nil.
1
7 + + − + − + − −
IV
Do.
Class I, nil.
2 tubes of 10 co.
1
1
8 + + − + − + − −
I V
Do.
„ II, 10.
3 „ 5 cc.
1
2
9
+ + − + − + − −
I V
Do.
„ III, nil.
3 „ 1 cc.
3
10 + + − + − + − −
I V
Do.
3 „ ·1cc.
3
3 „ ·01 cc.
3
Fœcal bacilli in 30 cc. and upwards.
No vibrios—in 100 cc.
SAMPLE IV.—FROM A TAP IN SOUTHERN CORNER
IN FRONT OF DISTRICT COURT, FOUNTAIN No. 52.
1
+ + − + +
+ + −
IV B. 97.
Group I, nil.
Total colonies per cc. on agar at 37°—3,780.
2 + + − + + + + −
IV
Do.
„ II, nil.
3 + + − + + + + −
IV
Do.
„ III, nil.
4 + + − + + + + −
IV
Do.
„ IV, 10.
Bile salt lactose, medium.
+
−
5
+ + − + + + + −
IV
Do.
6 + + − + + + + −
IV
Do.
Class I, 10.
7 + + − + + + + −
I V
Do.
„ II, nil.
1 tube of 22 cc.
1
8 + + − + + + + − IV
Do.
„ III, nil.
2 tubes of 10 cc.
1
1
9 + + − + + + + −
IV
Do.
3 „ 5
3
10 + + − + + + + −
IV
Do.
3 „ 1
1
2
3 „ · 1
3
3 „ ·01
3
Fœcal bacilli in 60 cc. and upwards.
No vibrios—in 100 cc.
99
SAMPLE V
Physical appearances.
Colour and
Transparency.
Colourless and clear.
Smell.
None.
QUANTITATIVE.
Total solids Parts per 100,000
42·000
Temporary hardness Do.
19·500
Permanent hardness Do.
0·500
Total hardness Do.
20·000
Chlorine Do.
1·420
Ammoniacal nitrogen Do.
0·004
Albuminoid nitrogen Do.
0·007
Oxygen absorbed (Tidy's Process) Do.
0·013
Nitric nitrogen Do. 0 · 0 8 7
Q U A N T I T A T I V E .
Nitrities
Nil.
Sulphates
Present.
Phosphates
Nil .
I r o n , p o i s o n o u s m e t a l s
Nil, nil.
96
REPORT.
Considering the circumstances under which the sample of Pennar river water was taken it is not at all
surprising to find that it is grossly contaminated. There are ten fœcal germs to the cc. and a very large
number of species represented. On this occasion the filtered water is remarkably pure and free from fœca
l germs. There is however a large total count which would appear to have been derived from the post
filtration passages.
The water from Fountain No. 3, Navvapet, is almost as good as the last but like it has too high
a
total count.
It is difficult to assign a reason for the state of affairs found in sample IV from Fountain No. 52
i n
front of the District Court. The quantity of fœcal germs present is all that can be desired but the quality
could hardly be worse. All the germs belong to a single species of the most susceptible class. Where have
they come from ? There are too few to make the likelihood of leaks a probable explanation, but, on the
other hand, they should have been disposed of by natural agencies had they been long in the pipes. The
total count is not appreciably lower than that of the water in the collecting well.
Chemically filtration seems to have increased the hardness of the water, but it has effected the oxidatio
n
of the organic matter which was of animal origin.
Chemical Analyses.
SAMPLE I.
SAMPLE IV.
Physical appearances.
Colour and
Transparency.
Yellowish and
hazy.
Yellowish
but clear.
Smell.
None.
None.
QUANTITATIVE.
Total solids
..
..
..
..
..
Parts per 100,000 ..
33.400
48.200
Temporary hardness
..
..
..
..
Do...., .
7 . 5 0 0
18.500
Permanent hardness
..
..
..
..
Do. ..
0 . 5 0 0
0.500
Total hardness ..
..
..
..
..
Do.
..
8 . 0 0 0
19.000
Chlorine
..
..
..
..
..
Do.
. .
5.325
7.100
Ammoniacal nitrogen ..
..
..
..
Do. ..
0 . 0 0 6
0.003
Albuminoid nitrogen ..
..
..
..
Do.
..
0.030
0.001
Oxygen absorbed ( Tidy' s Process)
..
..
Do. . .
0.080
0.027
Nitric nitrogen ..
..
..
..
..
Do.
..
Trace.
0.025
Q U A L I T A T I V E .
Nitrites
..
..
..
..
..
..
• •
..
..
Nil.
Nil.
Sulphates
..
..
..
..
..
..
..
.. ..
Present.
Present.
Phosphates
..
..
..
..
..
..
..
.. ..
Nil.
Nil.
Iron, poisonous metals
..
..
..
..
..
..
..
Nil, Nil.
Nil, Nil.