NationalLibraryOfScotland/medical-history-of-british-india huggingface dataset:
117
GUDIYÁTTAM.
W ATER SAMPLES TAKEN—27TH JUNE 1910.
REMARKS.—The river bed of Koundanya is dry. There has been about 4•02 inches of rain since last analysis. The supply is constant.
Bacteriological Analyses .
SAMPLE I.—SUCTION WELL OF THE INFILTRATION GALLERY.
C o l o n y n u m b e r
L a c t o s e .
Sscchar 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 Bacilli.
Group and
Remarks.
Total colonies per cc. on agar at 37°C.—850.
Bile salt lactose, medium.
+
−
1 tube of 20 cc. of water taken
1
1 + + − + − + − − IV B. Lactis ærogenes
Group I, nil.
2 tubes of 10 cc.
2
2 + + − + − + − − IV
Do.
„ II, nil.
3 „ 5 cc.
3
3 + + − + − + − −
I V
Do.
„ III, 2.
3 „ 1 cc.
2
1
4 + + + − − − + − III B. Neapolitanus
„ IV, 8.
3 „ ·1 cc.
3
5 + + + − − − + −
I I I
Do.
3 „ ·01 cc.
3
6 + + − + − + − − IV B. Lactis ærogenes.
Fœcal bacilli in 1 cc. and upwards.
7 + + − − − − + − IV B. Coscoroba
Class I, nil.
8 + + − + − + − − IV B. Lactis ærogenes.
No vibrios in 100 cc.
9 + + − + − + − − IV
Do.
Class II, 10.
10 + + − + − +
− − IV
Do.
„ III, nil.
SAMPLE II—FROM THE RESERVOIR.
1
+ − + − − − + − II B. Schafferi
Group I, 5.
2
+ − − + − − + −
I B. Acidi Lactici
„ II, 5.
Total colonies per cc. on agar at 37°C.—Countless.
3 + − + − − − + −
II B. Schafferi
„ III, nil.
4 + − + − − − + −
II
Do.
„ IV, nil.
Bile salt lactose, medium.
5
+ − + − − − + −
I I
Do.
6 + − + − − − + −
Do.
+
−
7 + − − + − − + −
I B. Acidi Lactici.
8 + − − + − − + −
I
Do.
Class I, 5.
9 + − − + − − + −
I
Do.
„ II, 5.
1 tube of 20 cc. of water taken
1
10 + − − + − − + −
I
Do.
„ III, nil.
2 tubes of 10 cc.
2
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 III.—TAP AT THE END OF BRAHMIN STREET.
1
+ + − + − + − − IV B. Lactis æregenes.
Group I, nil.
2 + − + − − − + −
II B. Schafferi
„ II, 8.
Total colonies per cc. on agar at 37°C.—1,400.
3 + − + − − − + −
II
Do.
„ III, nil.
4
+ − + − − − + −
II
Do.
„ IV, 2.
Bile salt lactose, medium
+
−
5 + − + − − − + − II
Do.
6 + − + − − − + −
II
Do.
7 + + − − − − + − IV B. Coscoroba.
8
+ − + − − − + − II B. Schafferi
Class I, 8.
9 + − + − − − + − II
Do.
„ II, 2.
1 tube of 20 cc. of water taken
1
10 + − + − − − + −
II
Do.
„ III,
nil.
2 tubes of 10 cc.
2
3 „ 5 cc.
3
3 „ 1 cc.
1
2
3 „ •1 cc.
3
3 „ •01 cc.
3
Fœcal bacilli in 1 cc. and upwards.
Vibrios present in 100 cc. (S. Forms).
SAMPLE IV.—TAP IN FRONT OF TRAVELLERS' BUNGALOW.
1
+ − + − −
−
+ −
I I
B. Schafferi
Group I, 5.
2 + − − + − − + −
I B. Acidi Lactici
„ II, 4.
Total colonies per cc. on agar at 37°C.—3,080.
3 + + + − − − + −
I I I B. Neapolitanus
„ III, 1.
4 + − + − − + −
I B. Acidi Lactici
„ IV, nil.
Bile salt lactose, medium.
5 + − − + − − + −
I
Do.
6 + − + − − − + −
I I B. Schafferi.
+
−
7 + − + − − − + −
I I
Do.
8 + − − + − − + −
I B. Acidi Lactici
Class I, 4.
9
+− + − − − + −
I I B. Schafferi
„ II, 6.
1 tube of 20 cc. of water taken
1
10 + − − + − − + −
I B. Acidi Lactici
„ III, nil.
2 tubes of 10 cc.
2
3 „ 5 cc.
3
3 „ 1 cc.
1
2
3 „ ·1 cc.
2
3 „ ·01 cc.
3
Fœcal bacilli in 5 cc. and upwards.
Vibrios present in 100 cc. (S. Forms).
30
118
REPORT.
The water-supply of Gudiyáttam continues to give disquieting and puzzling results. A very
fairly
satisfactory water is derived from the suction well of the Infiltration Gallery. It is pump ed into an over
-
head Service Reservoir and is found to contain pollution of a recent and most objectionable kind. H ow
is it done ? The present instance is not the only one. There would appear to have been a good deal of
sedimentation in the service pipes, but the presence of vibrios in water drawn from them is an exceedingly
disquieting circumstance, and one liable to be associated with very grave results. Chemically there is
nothing new to record about the water. It is definitely hard and contains some sulphates, but is otherwise
satisfactory enough.
Chemical Analyses.
SAMPLE I.
SAMPLE I V.
r-
..._
--)
Physical appearances.
Colour and
Tramparency.
Colourless and clear.
Colourless and clear.
Smell.
None.
None.
QUANTITATIVE.
Total solids
..
..
..
..
..
Parts per 100,000 ..
44∙000
43∙200
Temporary hardness ..
..
..
..
..
Do...
18∙500
18∙500
Per manent hardness .. .. .. ..
Do... 0∙500
0∙500
Total hardness
..
..
..
Do.. 19∙000
19∙000
Chlorine
..
..
..
..
..
Do..
1∙260
1∙260
Ammoniacal nitrogen
..
..
..
Do.
..
0∙004
0∙005
Albuminoid nitrogen ..
..
..
..
Do.
..
Trace.
0.002
Oxygen absorbed (Tick's Process)
..
..
Do.
0∙028
0∙028
Nitric nitrogen..
..
. .
Do.
..
0∙100
0∙112
QUALITATIVE.
Nitrites
••
..
..
.•
••
••
••
••
..
Nil.
Nil.
Sul phates
..
.
..
..
..
..
..
..
..
Present.
Present.
..
..
..
.
Phosphates
..
..
...
..
Nil,
nil.
Iron, poisonous metals, •
••
..
..
••
..
..
nil.
Nil, nil
119
VELORE.
WATER SAMPLES TAKEN
—27TH & 28TH JUNE 1910.
REMARKS.—The tank now contains 13·75 feet of water. The supply is intermittent. There has been about 7·79 inches of rain since
last analysis.
Bacteriological Analyses.
SAMPLE I. —FROM CANK. OR RESERVOIR (UNFILTERED WATER).
Col ony number.Lactose.Nacchar os e. Dul ci t e.Adoni t e. I n u l i n . Vo g e s a n d P r o s k .Indol.Mot i l i t y. Group.
Bacillus.
Group and
Remparks.
Total colonies per cc. on agar at 37°—
120.
Bile salt lactose, medium.
+
−
1 tube of 20 cc. of water taken
1
1
+ − − + − - + −
I
B. Acidi Lactici
Group I, 8.
2 tubes of 10 cc.
„
2
2 + − − + − − + −
I
Do.
„
II,
nil.
3 „ 5
cc. „
3
3 + − − + − − + −
I
Do.
3 „ 1 cc. „
2
1
4 + − − + − − + −
I
Do.
„ III, 2.
3 „ ·1 cc. „
3
5 + − − + − − + −
I
Do.
„ IV, nil.
3 „ ·01 cc. „
3
6 + + +
+
− + − − III B. 67.
7 + − − + − − + −
I B. Acidi Laotioi
Class I. nil.
Fœcal bacilli in 1 cc. and upwards.
8 + − − + − − + − II
Do.
9 + + + + − + − − III B. 67
„
II,
10.
No vibrios in 100 cc.
10
+ − − + − − + −
I B. Acidi Lactici
,, III, nil.
SAMPLE II.—FIRST TAP AFTER FILTRATION.
1
+
−
+ −
− −
+ − II
B. Scháfferi.
Group I, 1.
2 + − + − − − + − II
Do.
„ II, 9.
Total colonies per cc. on agar at 37° could not be counted
3 + − + − − − + − II.
Do.
„ III, nil.
4 + − + − − − + − II
Do.
„ IV, nil.
5 + −
+
− − − +
− II
Do.
Bile salt lactose, medium.
+ −
6 + − + − − − + −
I I
Do.
7 + − + − − − + −
I I
Do.
8 + − + − − − + − II
Do.
Class I, 9.
1 tube of 20 cc.
1
9 + − + − − − + −
I I
„
II,
nil.
2 tubes of 10 cc.
2
10 + − − − − − − − II B. Mutabilis
„ III, 1.
3 „ 5 cc.
2
1
3 „ 1 cc.
2
1
3 „ ·1 cc.
3
3 „ ·01 cc.
3
Fœcal bacilli in 1 cc. and upwards.
No vibrios in 100 cc.
SAMPLE III. —A TAP AT SAIDAPET—THE EASTERNMOST CORNER.
1
+ + − + − + − − IV B. Lactis ærogenes.
Group I, nil.
Total colonies per cc. on agar at 37°—Countless.
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.
7 + + − + − + − − IV
Do.
1 tube of 20 cc.
1
8 + + − + − + − − IV
Do.
Class I, nil.
2 tubes of 10 cc.
2
9 + + − + − + − − IV
Do.
„
II,
10.
3 „ 5 cc.
3
10
+ + − + − + − − IV
Do.
„ III, nil.
3 „ 1 cc.
3
3 „ ·1 cc.
3
3 „ ·01 cc.
3
Fœcal bacilli in ·01 cc. and upwards
No vibrios in 100 cc.
SAMPLE IV.—A TAP NEAR POLICE STATION.
1
+
−
+ − − − + −
II
B. Scháfferi.
Group, I, nil.
2 + − + − − − + −
I I
Do.
„
II,
8.
Total colonies per cc. on agar at 37°—could not be counted.
3 + − + − − − + −
II
Do.
„ III, 2.
4 + − + − − − + −
II
Do.
„
IV,
nil.
5 + + + − − − + − III B. Neapolitanus.
Bill salt lactose, medium.
+
−
6 + − + − − − + −
II B. Scháfferi.
7 + − + − − − + −
II
Do.
8 +
+ + − − − + −
I I I
B. Neapolitanus.
Class I, 8.
1 tube of 20 cc. of water taken
1
9 + − + − − − + −
II
B. Scháfferi.
„
II,
2.
2 tubes of 10 cc.
2
10 + − + − − − + −
II
Do.
„ III, nil.
3 „ 5
cc. „
1
2
3 „ 1
cc. „
3
3 „ ·1
cc. „
3
3 „ ·01
cc. „
3
Fœcal bacilli in 10 cc. and upwards.
No vibrios in 100 cc.
120
REPORT.
In previous reports attention has been called to the effect filtration has exercised on Vellore water. In
most cases the effect has been little or no improvement. On this occasion the water has been rendered
very much worse. The water of the tank with only one fœtal germ to the cc. and a total count of only
120 is in a very fair condition. Compare this with the water as it comes out of the filters. A huge total
count and fœtal germs of the most susceptible kinds present. A fairly constant feature of this water is
the presence of considerable quantities of organic matter which appears to be largely of animal origin
and can be removed by filtration. Such a water is likely to afford good pabulum for micro-organisms and
this may help to explain the bad condition of the sample drawn at Saidapet. A countless number of
germs in one-tenth of a cc. is quite out of the question in a drinking water supply, especially when one
hundred to the cc. are of foetal origin. The germs in the sample drawn near the police station are not
so numerous but they are more objectionable in kind, and appear to have been derived from the filters.
Sometimes the Vellore water has given astonishingly good results and with efficient filtration it might prove
one of the best supplies in Southern India.
Chemical A nalyses.
SAMPLE I.
SAMPLE III.
Physical appearances.
Colour and
Transparency.
Yellowish and opaque.
Yellowish and opaque.
Smell.
None.
None.
QUANTITATIVE.
Total solids
..
..
..
..
.. Parts per 100,000 ..
28.000
22 000
Temporary hardness ..
..
..
..
Do...
9 ∙ 0 0 0
9∙000
Permanent hardness ...
..
..
Do.
..
1∙ 0 0 0
1∙000
Total hardness
,
..
..
..
D o
..
10∙000
10∙000
Chlorine
..
..
..
..
Do.
1∙065
1∙065
Ammoniacal nitrogen ..
..
..
..
Do...
0 ∙ 0 0 3
Trace.
Albuminoid nitrogen ..
..
..
..
Do...
0 ∙ 0 2 8
0∙014
Oxygen absorbed (Tidy's Process) ..
..
Do ...
0 ∙ 2 2 7
0∙118
Nitric nitrogen
..
..
..
..
Do..
0∙025
0∙050
QUALITATIVE.
Nitrites
.
..
..
..
..
..
..
..
Nil.
Nil.
Sulphates
..
..
..
..
..
..
..
..
..
Present.
Present.
Phosphates ..
..
..
. ....
..
..
..
Nil.
Nil.
I ron, poisonous metals
..
..
..
• .
..
..
.. ,
.Nil, nil.
Nil, nil.
Report on the Town Water Supplies of the Madras Presidency
for the Quarter ending 30th September 1910 being Part
III of Appendix II to the Annual Report of the King
Institute of Preventive Medicine, Madras, for the year
1910.
127
germs many times and usually increasing the tοtal count. The results frόm the
distributary system are variable. It would be desirable to give a continuous supply
at this season when there is plenty of water, to test whether the pipes are at fault
or whether it is simply a tendency for silt to collect. Chemically there is too much
organic matter which appears to be mainly of animal origin, but otherwise the water
is fairly good and soft.
Vizagapatam.—Strictly speaking a comparisοn can only he made for the last
two years, as in 1908 the samples were taken early in July when the tank was νery
low. A useful comparison can however be made with the results got in the subse-
quent quarter with the samples collected early in October. Considered this way
there will be noticed a tendency for the water to improve in quality. The organic
matter is now mainly of vegetable origin, whereas it was very definitely of animal
origin, and there is less of it. Bacteriologically the water is much alike all three
years. Filtration does not improve the water and sometimes spoils it. Passage
through the pipes tends to reduce the amount of bacterial pollution but affect the
quality. In 1908 the type organism of dangerous recent pollution was found in the
filtered water and also in the water as delivered in the town.
128
TRICHINOPOLY.
WATER SAMPLES TAKEN-9TH JULY 1910.
REMARKS.–There has been about 6·59 inches of rain since last analysis. The supply is intermittent. The river Cauvery way in high
flood when samples were taken.
Bacteriological Analyses.
SAMPLE I.–FROM THE RIVER BED.
C o l o n y n u m b e r .
Lact ose.Sacharose.
Dul c i t e.
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.
Bacillus.
Groupand
Remarks
Total colonies per cc. on agar at 37°C.–440.
Bile salt lactose, medium.
+
−
1 tube of 20 cc.
1 1 + − + − − − +
−
II
B. Scháfferi
Group I, 2.
2 tubes of 10 cc.
2
2
+ − + − − −
+ − II
Do.
,, II,8,
3 „ of 5 cc.
3
3 +
− + − − −
+
− II
Do.
„ III,
nil,
3 „ of 1 cc
3
4 +
−
+ − − −
+
−
II
Do.
„ IV, nil,
3 „ of ·1 cc.
3
5 + − + − − −
+
−
II
Do.
3 „ of ·01 cc.
3
6 + − − + − −
+
−
I
B. Acidi Lactici.
Fœcal bacilli in ·1 cc. and upwards.
7 + −
+
− − −
+
− II B. Seháfferi.
8
+ − − − − −
+
−
I B. Vesiculosus
Class I, 8.
No vibrios in 100 cc.
9
+
− +
− − −
+
−
II
B. Scháfferi
„ II, 1.
10
+
−
+
− − −
+
− II
Do.
„ III, 1.
SAMPLE II. —FROM THE FIRST TAP IN HEAD WORES AFTER
INFILTRATION GALLERY.
Total colonies per cc. on agar at 37°C.-160.
1 + − − − − −
+
−
I B. Vesiculosus
Group 1, 8.
2
+
− − − − −
+
−
I
Do.
„ II, nil,
Bile salt lactose, medium.
+
−
3 + + − − − − + − IV B. Coscoroba
„ III, nil,
4
+
− − − − −
+
−
I B. Vesiculosus
„ IV, 2.
5
+
− − − − −
+
−
I
Do.
6 + − − − − −
+
−
I
Do.
1 tube of 20 cc.
1
7 + + − + − + − − IV B. Lactis ærogenes.
8 + − − − − −
+
−
I B. Vesiculosus
Class I, nil,
9
+
− − − − −
+
−
Do.
„ II, 2.
2 tubes of 10 cc.
2
10
+
− − − − −
+
−
I B. Nutabalis
„ III, 8.
3 „ 5 cc.
2
1
3 „ ·1 cc.
1
2
3„·1 ce.
3
3 „ ·01 cc.
3
Fœcal bacilli in 5 cc. and upwards.
No vibrios in 100
cc.
SAMPLE III.—FROM THE TOP TO THE SOUTHERN CONRER O
F TEPPAKULAM NEAR CLIVE'S HOUSE.
Total colonies per cc. on agar at 37°C.-70.
+
−
1
+
−
−
+
− −
+
−
I B. Acid Lactici
Group 1,5.
2
+ +
−
+
−
+ +
− IV B. 116
„ II, nil,
3
+
−
−
+
−
−
+
−
I B. Acidi Lactici
„ III,I.
Bile salt lactose, medium
4
+
−
−
+
− −
+
−
I
Do.
„ IV,4.
5
+ + +
− −
+ +
−
III
?
1 tube of 20 cc.
1
6
+
− −
+
− −
+
−
I B. Acidi Lactici
2 tubes of 10 cc.
2
7
+ +
−
+
−
+
− − IV B. Lactis ærogenes. Class I, nil,
3 „ 5 cc.
3
8
+ +
−
+
− − − −
IV B GasoformAns
II, 7.
3 „ 1 cc.
1
2
9
+
−
−
+
− −
+
−
I B. Acidi Lactici
„ III, 1.
3 „ ·1 cc.
3
10
+ +
− − −
+
−
+
IV B. Cloacæ
Undetermined,
2
3 „ ·01 cc.
3
Fœcal bacilli in 5 cc. and upwards.
No vibrios in 100 cc.
SAMPLE IV,-A TAP NEAR RAILWAY STATION.
1
+ +
− − −
−
+
−
IV B. Coscoroba
Group I, 2.
2
+ +
− − − −
+
−
IV
Do.
,, II, nil,
Total colonies per cc. on agar at 37°C.-20.
3
+ +
− − − −
+
−
IV
Do.
,, III, nil
4
+ +
− − − −
+
−
IV
Do.
,, IV, 8.
Bile salt lactose, medium.
+
−
5
+ +
− − − −
+
−
IV
Do.
6
+ +
− − − −
+
− IV
Do.
1 tube of 20 cc.
1
7
+
− − − − −
+
−
I B. Vesiculosus
Class I, nil.
8
+
− − − − −
+
−
I
Do.
,, II 8.
2 tubes of 10 cc.
2
9
+ +
− − − −
+
− IV B. Coscoroba
,, III, 2.
3 „ 5 cc.
2
1
10
+ +
− − − −
+
−
IV
Do.
3 „ 1 cc.
3
3 „ ·1 cc.
3
3 „ ·01 cc.
3
Fœcal bacilli in 5 cc. and upwards.
No vibrios in 100 cc.
129
REPORT.
The river Cauvery was in high flood at the time samples wore collected, so that it is not surprising to
find that pollution of a recent and objectionable character is present in it, a large proportion of the fœcal
germs belonging to the susceptible Class I.
It is all the more gratifying to find that the water of the distributary system is very much better. The
faecal germs are greatly reduced in number, the susceptible Class I has quite disappeared. Samples II
and III show too great a diversity of species, indicating that pollution has at one time been considerable.
Chemically the distribution water is so very different from the river water that there must be some
other source of supply. This has been noticed before, but on this occasion the water of the distributary
system is nearly three times as hard as the river water. It contains slightly more chlorine and. the small
amount of animal matter present is different in character, being definitely of animal origin. The organic
matter in the river water is purely vegetable and probably largely suspended.
Chemical Analyses.
SAMPLE I.
SAMPLE IV.
Physical appearances.
Colour and
Transparency.
Yellowish and opaque.
Slightly yellowish
and hazy.
Smell.
None.
None.
- .
QUANTITATIVE.
Total solids ..
..
..
..
Parts per 100,000
..
50∙800
18∙400
Temporary hardness
..
..
..
D0.
..
2∙000
9∙000
Permanent hardness
..
..
.
Do.
2∙ 0 0 0
2∙000
Total hardness
..
..
..
..
Do.
..
4.000
11∙000
Chlorine
..
..
..
Do.
..
0∙710
1∙066
Ammoniacal nitrogen
..
..
..
Do.
..
0∙003
0.003
Alburoinoid nitrogen
..
..
..
Do.
..
0∙011
Trace.
Oxygen absorbed (Tidy': Process) .
..
Do.
..
0.267
.0.013
Nitric) nitrogen
..
..
..
..
Do.
..
T race.
.
Trace.
QUALITATIVE.
Nitrites
..
..
..
..
..
..
..
..
Nil.
Nil.
Sulphates
..
..
..
..
..
..
..
..
Trace.
Trace.
Phosphates
..
..
..
..
..
..
..
..
..
Nil.
Nil.
Iron, poisonous metals
..
..
..
..
..
..
..
Nil, nil.
Nil, nil.
131
REPORT.
As usual at this time of the year the river Coleroon was in full flood when the samples were taken. The
:Treat variety of foecal germs present indicates that extensive pollution is taking place, but the absence of
'Class I would appear to point to the first and most objectionable part of the pollution having been got rid,' of.
Sample II taken from a tap at the head works shows a much more satisfactory state of affairs, faecal
being
reduced and the number of varieties cut down to one of a moderately resistant the kind.
germs
g
Samples . III and IV are again not so good. With five times a3 many faecal germs and a very consider-
able mixture of species, it would be interesting to Know whence these are derived. The pipes might be
flushed out to remove any silt that may have collected in them.
Chemically the water is much as usual and. that is good. The high total solids and organic matter in
the river water is probably mainly suspended matter.
L.
Chemical Analyses.
qii,
SAMPLE I.
SAMPLE IV.
3,
Colour and.
Transparency.
Yellowish and opaque.
White and opaque.
Ta
Physical appearances.
ed, L
Smell.
None.
None.
QUANTITATIVE.
nil,
nil,
Total solids
..
Temporary hardness
Parts per 100,000
Do.
41 . 200
11-400
1 . 500
2.500
Permanent hardness
. .
Do.
2 . 500
2.500
Total hardness
Do.
4 . 000
.5.000
Chlorine
. .
Do.
0 . 710
0'710
ii,
0.
Arnmoniacal nitrogen
Albuminoid nitrogen
Do.
Do.
0 . 002
Trace.
0 . 022
Trace.
Oxygen absorbed (Tidy's Process)
Do.
0 . 268
0.03'1
Nitric nitrogen
Do.
Trace.
Trace.
QUALITATIVE.
Nitrites
Sulphates
. .
Nil.,
Trace.
Nil.
Trace.
Phosphates
. .
. .
Nil.
Nil.
Iron, poisonous metals
.
Nil, nil.
Nil, nil.
8.
1,
ied, L
I, nil.
1,4.
I
s
s,
132.
MADRAS.
WATER SAMPLES TAKEN—17TH & 18TH JULY 1910.
REMARKS.—Maclean's and Sholavaram channels were dry when samples were collected. There has been about 2·24 inches of rain
since last analysis.
Bacteriological Analyses.
SAMPLE 1.— FROM THE BOTTOM OF THE RED HILLS LAKE.
Number.Lactose.Sacchar ose.Dul ci t e.Adoni t e.I nul i a.Vo g e s a n d Pr 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° C.
—20.
Bile salt lactose, medium.
+
−
1 tube of 20 cc. of water taken
1
2 tubes of 10 cc.
2
1
+
+ +
+
−
+
− − III B. 67.
3 „ 5 cc.
2
1
2
+
+
+ +
−
+
− − III
Do.
Group I, nil.
3 „ 1 cc.
3 3
+ + + +
−
+
− −
III
Do.
„ II, nil.
3 „ ·1 cc.
3
4
+ + + +
− − − − IV B. Gaso formans
„ III, 8.
3 „ ·01 cc.
3
5
+ +
−
+
− − − −
I V Do.
„ IV, 2.
Fœcal bacilli in 5 cc. and upwards.
6
+
+ + +
− − − − III B. Pneumoniæ
7
+
+
+
+
− − − − III
Do.
8
+ + + +
−
+
− −
III
B. 67.
Class I, nil.
No vibrios in 100 cc.
9
+ + +
+
−
+
− − III
Do.
,, II,10.
10
+ + + +
−
+
− −
III
Do.
„ III,
nil.
SAMPLE II.— FROM THE SURFACE OF THE RED HILLS LAKE.
Total colonies per cc. on agar at 37° C.
—220.
1 + + + + − + - −
III
B. 67.
2 + + + + − + - − III
Do.
Group I, nil.
3 + + + + − + - −
III
Do.
„ II, nil.
4 + + + + − + - −
III
Do.
,, III,10.
Bile salt lactose, medium.
+
−
5 + + + + − + - +
III
B. 76
„ IV, nil.
6
+ + + + − + - − III B. 67.
7
+ + + + − + - − III
Do.
1 tube of 20 cc. of water taken
1
8 + + + + − + - −
III
Do.
Class I, nil.
2 tubes of 10 cc.
2
9 + + + + − + - − III
Do.
„ II,
9
.
3 ,, 5 cc. ,,
3
10 + + + + − + - −
III
Do.
„ III, nil.
3 ,, 1cc. „
3
Undetermined,
3 „ ·1 cc. „
3
1.
3 „ ·01 cc. „
3
Fœcal bacilli in 10 cc. and upwards.
No vibrios in 100 cc.
SAMPLE III.—TAP WATER IN MALAYAPERUMAL STREET, G.T.
Total colonies per co. on agar at 37° C.
—20.
1 + − − − − − + − I
B. Vesiculosus.
2 + − − − − − + − I
Do.
Group I, 10.
3 + − − − − − + − I
Do.
„ II, nil.
Bile salt lactose, medium.
+
−
4 + − − − − − + − I
Do.
„ III,
nil.
5 + − − − − − − +
I B. 7
„ IV, nil.
6 +
− − − − − + −
I
B. Vesiculosus.
1 tube of 20 cc. of water taken
1
7 + − − − − − + −
I
Do.
2 tubes of 13 cc.
2
8 + − − − − − + −
I
Do.
Class I, nil.
3
„
5 cc. ,,
3
9 + − − − − − + −
I
Do.
„ II, nil.
3 „ 1 cc. ,,
1
2 10 + − − − − − + −
I
Do.
„ III, 10.
3 „ ·1 cc. ,,
3
3 „ ·01 cc. ,,
3
Fœcal bacilli in 5 cc. and upwards.
No vibrios in 100 cc.
SAMPLE IV.—TAP NEAR SAIDAPET TOLL GATE.
1 + − − −
− − + −
I
B. Vesiculosus.
Total colonies per co. on agar at 37° C.
—110.
2 + − − − − − + −
I
Do.
Group I, 6.
3 + + − − − − + −
I V
B. Coscoroba
„ II,
nil.
4 +
− − − − − + −
I
B. Vesiculosus
„ III, nil.
Bile salt lactose, medium.
+
−
5 + − − − − − + −
I
Do.
„ IV, 4.
6 + − − − − − + −
I
Do.
7 + + − − − − + −
I V
B. Coscoroba.
1 tube of 20 cc. of Water taken
1
8 + − − − − − + −
I
B. Vesiculosus.
Class I, nil.
2 tubes of 10 cc.
2
9 + + − − − − + −
I V
B. Coscoroba
„ II, 4.
3 ,, 5 cc. ,,
3
10 + + − − −
+ −
I V
Do.
„ III, 6.
3 ,, 1 cc. ,,
1
2
3 „ ·1 cc.
,,
3
3 „ ·01 cc.
,,
3
Fœcal bacilli in 5 cc. and upwards.
No vibrios in 100 cc.
133
REPORT.
The results obtained on this occasion are decidedly good. It is not often that the general average show
so high a standard. The surface water of the Red Hills Lake shows a higher total count, but somewha
u n e x p e c t e d l y , f e we r f œc a l g e r ms t h a n d o e s t h e b o t t o m wa t e r . S a mp l e s I I I
a n d I V f r o m t h e d i s t r i b u t a r y
system are much like the bottom water of the like and are quite satisfactory.
Chemically the main undesirable feature is a rather high figure for organic matter, which matter is of
animal origin. The results are very much as usual.
Chemical Analyses.
SAMPLE II.
SAMPLE IV.
Physical appearances.
Colour and
Transparency.
Yellowish but hazy. Yellowish but
clear.
Smell.
None.
None.
QUANTITATIVE.
Total solids ..
.. .. .. Parts per 100,000 ..
31.000
30.400
Temporary hardness .. .. .. ..
Do... 7.000
7.000
Permanent hardness .. .. .. ..
Do...
1. 000
1.000
Total hardness
.. .. .. ..
Do.
..
8.000
8.000
Chlorine
.. .. .. .. ..
Do.
5. 680
5. 680
Ammoniacal nitrogen .. ..
..
Do... 0.006
0. 011
Albuminoid nitrogen.. .. .. ..
Do.
..
0.022
0.036
Oxygen absorbed (Tidy's Process) .. ..
Do.... 0.192
0. 141
Nitrie nitrogen. ..
Do.
• •
Nil.
Nil.
QUALITATIVE.
.
Nitrites .. .. .. .. .. .. .. .. .. ..
Nil.
Nil.
Sulphates .. .. .. .. .. .. .. .. ..
Present.
Present.
Phosphates .• .. .. .. .. .. .. .. ..
Nil.
Nil.
Iron, poisonous metals • . .. .. .. .. • . .. ..
Nil, nil.
Nil, nil.
34