NationalLibraryOfScotland/medical-history-of-british-india huggingface dataset:
105
COONOOR.
WATER SAMPLES TAKEN—14TH AUGUST 1912.
Remarks.—The reservoir at Bandanir was full and overflowing. The supply is intermittent.
There has been about 9.28 inches of rain since last analysis.
Bacteriological Analysis.
SAMPLE I.—TAP IN FRONT OF RESERVOIR AT BANDANIR.
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 . 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.
Group and
Remarks.
Total colonies per cc. on agar at 37º C.—225.
Bile salt lactose, medium.
+
-
1 tube of 20 cc
1
...
1 + + - -
- -
+ - IV B. Coscoroba
Group I, nil.
2 tubes of 10 cc.
2
. . .
2 + +
- -
-
-
+
-
IV
Do.
"
II, nil.
3
" 5cc.
3
3
. . .
3
+
+
- -
-
-
+
-
IV
Do.
"
III, nil.
3
"
1 cc.
3
. . .
4 + + - - -
- + - IV
Do.
" IV, 10.
3
"
.1 cc.
. . .
3
5
+
+
- -
- - + - IV
Do.
3
" .01 cc.
. . .
3
6
+ + - -
-
-
+ - IV
Do
Fœcal bacilli in 1 cc. and upwards.
7
+
+
- -
- - + - IV
Do.
8 + + -
-
- - +
-
IV
Do.
Class I, nil.
No vibrios in 100 cc.
9
+ +
- -
-
-
+ -
IV
Do.
" II, 10.
10 + + -
-
- -
+ -
IV
Do.
" III, nil.
SAMPLE II—FIRST TAP AFTER SERVICE RESERVOIR
1 + - -
+
- - +
-
I B. Acidi lactici
G r o u p I , 8 .
2 + - -
+
- - + - I
Do.
"
II, nil.
Total colonies per cc. on agar at 37º C.—10.
3 + - -
+
- -
+
- I
Do.
"
III, nil.
4 + - -
+
- - +
-
I
Do.
" I V , 2 .
Bile salt lactose, medium.
+
-
5
+ -
- - - -
+
-
I B. Vesiculosus.
6
+ -
-
+
- - +
-
I B. Acidi lactici.
7 + + - - - - + - IV B. Coscoroba.
1 tube of 20 cc.
1
. . .
8 +
-
- + - - + - I B. Acidi lactici
Class I, nil.
9 + + -
-
- - + - IV B. Coscoroba
"
II, 9.
10
+
-
-
+ - - + - I B. Acidi lactici
" III, 1.
2 tubes of 10 cc.
2
...
3
"
5 cc.
3
...
3
"
1 cc.
. . .
3
3
"
.1 cc.
. . .
3
3
" .01 cc.
. . .
3
Fœcal bacilli in 5 cc. and upwards.
No vibrios in 100 cc.
SAMPLE III.—TAP IN FRONT OF POST AND TELEGRAPH OFFICE. 1 +
- - - - -
+
-
I B. Vesiculosus
Group I, 9.
2 + - - - - - + - I
Do.
"
II, nil.
Total colonies per cc. on agar at 37º C.—28.
3
+ - - - - - + - I
Do.
" III, nil.
Bile salt lactose, medium.
+
-
4 + - - - - - +
-
I
Do.
" IV, 1.
5 + - - - - - + - I
Do.
6 + -
-
- -
-
+
-
I
Do.
1 tube of 20 cc.
1
. . .
7
+
-
-
- - -
+ -
I
Do.
8 + - - -
-
- + - I
Do.
Class I, nil.
2 tubes of 10 cc.
2
. . .
9 + + - - - - +
-
IV B. Coscoroba
"
II, 1.
3
"
5 cc.
3
. . .
10 + - -
-
- - + - II B. Vesiculosus
"
III, 9.
3
"
1 cc.
. . .
3
3
"
.1 cc.
. . .
3
3
" .01 cc.
. . .
3
Fœcal bacilli in 5 cc. and upwards.
No vibrios in 100 cc.
SAMPLE IV.—TAP IN FRONT OF CHOULTRY NEAR RAILWAY
STATION.
1
+
-
- - - -
+
-
I B. Vesiculosus
Group I, 5.
2 +
- - - - -
+ - I
Do.
"
II, nil.
Total colonies per cc. on agar at 37º C.—45.
3 + - - - - - + - I
Do.
" III, nil.
Bile salt lactose, medium.
+
-
4 + + - - - - + - IV B. Coscoroba
" IV, 5.
5
+ - - - - -
+ - I B. Vesiculosus.
6 + + - - - - + - IV B. Coscoroba.
7
+ - - - - - + -
I B. Vesiculosus.
1 tube of 20 cc.
1
. . .
8 + + -
-
- - + - IV B. Coscoroba
Class I, nil.
9 + + - - -
-
+
-
IV
Do.
"
II, 5.
2 tubes of 10 cc.
2
. . .
10 + + - - - - + - IV
Do.
" III, 5.
3
"
5 cc.
3
. . .
3
"
1 cc.
1
2
3
"
.1 cc.
. . .
3
3
"
.01 cc.
. . .
3
Fœcal bacilli in 5 cc. and upward.
No vibrios in 100 cc.
106
REPORT.
The water is better than usual at this season and this is probably in relation to the rainfall
Either the seven inches of rain recorded since last analysis fell in too gradual a fashion to scour
down the gathering ground or most of the impurities have been already removed from the latter.
For the rainy season the water which shows a moderate total count and only one fœcal germ to
the cc. must be classed as quite satisfactory. The water in Service Reservoir is considerably
better which is a very different state of affairs than used to be the rule in the past. There is
rather a large variety of species among the fœcal germs, but with only one of the latter to five
cc. there is not much to take exception to. The total count is notably low and the same satis-
factory features are maintained in the water as distributed to the town. Chemically the water is
as usual very good indeed.
Chemical Analysis.
SAMPLE I.
SAMPLE IV.
Physical appearances.
Colour an
d Transparency.
Yellowish and hazy.
Yellowish and hazy.
Smell.
None.
None.
QUANTITATIVE.
Total solids ...
...
...
...
...
Parts per 100,000
. . .
2.400
2.600
Temporary hardness
...
...
...
Do.
. . .
Nil.
Nil.
Permanent hardness
...
...
...
Do.
. . .
0.500
0.500
Total hardness
...
...
...
...
Do.
. . .
0.500
0.500
Chlorine
...
...
...
...
Do.
. . .
0.213
0.213
Ammoniacal nitrogen
...
...
...
Do.
. . .
Trace.
Trace.
Albuminoid nitrogen
...
...
..
Do.
. . .
0.013
0.006
Oxygen absorbed (Tidy' s Process ) ....
...
Do.
0.087
0.070
Nitric nitrogen
... ... ... ...
Do.
. . .
Nil.
Nil.
QUALITATIVE.
Nitrites
...
...
...
...
...
...
...
...
...
Nil.
Nil.
Sulphates
...
...
...
...
...
...
...
...
Nil.
Nil.
Phosphates ...
..
...
...
...
...
....
...
Nil.
Nil.
Iron, poisonous metals
...
...
...
...
...
...
...
Nil, nil.
Nil, nil .
107
MADURA.
WATER SAMPLES TAKEN—24TH AUGUST 1912.
Remarks.— A thin sheet of water was running in the river. Spring channels are cut in the bed
of the river to increase the yield. The supply is intermittent. There has been
about 9.73 inches of rain since last analysis.
Bacteriological Analysis.
SAMPLE I.—FROM A CHANNEL CUT IN THE BED OF THE VAIGAI
RIVER.
Number.
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 .
Inulin.
V o g e s a n d P r o s k .
Indol.
M o t i l i t y .
Group.
Name of Bacilli.
Group and
Remarks.
Total colonies per cc. on agar at 37° C.—2,900
Bile salt lactose, medium.
+
-
1 tube of 20 cc.
1
...
1 + + + + - + - - III B. 67
Group I, 2.
2 tubes of 10 cc.
2
...
2 + + - + - - - - IV B. Gasoformans
" II, nil.
3
"
5 cc.
3
...
3 + - - - - - + - I B. Vesiculosus
" III, 3.
3
" 1 cc.
1
2
4 + + - - - + - + IV B. Cloacæ
" IV, 5.
3
"
.1 cc.
1
2
5 + + - - - + - + IV
Do.
3
" .01 cc.
...
3
6 + + + + - + - - III B. 67.
Fœcal bacilli in 5 cc. and upwards.
7
+ + - + - + - - IV B. Lactis ærogenes.
8 + + + + - + - - III B. 67
Class I, nil.
9 + + - - - - + - IV B. Coscoroba
" II, 6.
No vibrios in 100 cc.
10 + - - - - - + - I B. Vesiculosus
" III, 4.
SAMPLE II.—TAP IN FRONT OF PUMPING STATION.
1 + + + + - - - - III B. Pneumoniæ
Group I, nil.
2 + + + + - - - - III
Do.
" II, nil.
Total colonies per cc. on agar at 37° C.—50.
3 + + + + - - - - III
Do.
" III, 10.
4 + + + + - - - - III
Do.
"
IV, nil.
Bile salt lactose, medium.
+
-
5 + + + + - - - - III
Do.
6 + + + + - - - - III
Do.
7 + + + + - - - - III
Do.
1 tube of 20 cc.
1
...
8 + + + + - - - - III
Do.
Class I, nil.
9 + + + + - - - - III
Do.
" II, 10.
10 + + + + - - - - III
Do.
" III, nil.
2 tubes of 10 cc.
2 ...
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.
SAMPLE III.—TAP IN MUNGAMMAL CHATTRAM.
1 + + - + - - - - IV B. Gasoformans
Group I, nil.
Total colonies per cc. on agar at 37° C.—390.
2 + + - + - - - - IV
Do.
" II, nil.
3
+ + - + - - - - IV
Do.
" III, nil.
Bile salt lactose, medium.
+
-
4 + + - + - - - - IV
Do.
" IV, 10.
5 + + - + - - - - IV
Do.
6 + + - + - - - - IV
Do.
1 tube of 20 cc.
1
...
7 + + - + - - - - IV
Do.
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.
2
1
3
" .01 cc.
...
3
Fœcal bacilli in .1 cc. and upwards.
No vibrios in 100 cc.
SAMPLE IV.—PILLAR FOUNTAIN No. 1/1 NEAR BIG TEPPAKULAM.
1
+ - - - - - + - I B. Vesiculosus
Group I, 5.
Total colonies per cc. on agar at 37° C.—380.
2 + + - + - - - - IV B. Gasoformans
" II, nil.
3 + + - + - - - - IV
Do.
" III, nil.
Bile salt lactose, medium.
+
-
4 + - - - - - + - I B. Vesiculosus
" IV, 5.
5 + - - - - - + - I
Do.
6 + + - - - - + - IV B. Coscoroba.
1 tube of 20 cc.
1
...
7 + - - - - - + - I B. Vesiculosus.
8 + + - + - - - - IV B. Gasoformans
Class I, nil.
2 tubes of 10 cc.
2
...
9 + - - - - - + - I B. Vesiculosus
"
II, 5.
3
" 5 cc.
3
...
10 + + - - - - + - IV B. Coscoroba
" III, 5.
3
" 1 cc.
3
...
3
" .1 cc.
1
2
3
" .01 cc.
1
2
Fœcal bacilli in 1 cc. and upwards.
No vibrios in 100 cc.
31
108.
REPORT.
As regards its content of excremental germs the river water is exceptionally good which would
seem to point to careful conservation of the bed and banks above the intake. The total count is
however very high. After passing through the gallery the water is much better in every way,
the total count is Botably reduced, there are only half the number of fœcal germs, and the
undesirable variety in species seen in the unfiltered water is no longer apparent. Altogether the
water of the headworks is in excellent order. It is a pity to see such good water spoiled in dis-
tribution. Except in the matter of total count .the water at different parts of the town is worse
than the raw river water. The pipes must be in a dirty condition to account for this and should
be scoured out more frequently. Chemically the water is much as usual rather hard and with
the figure for organic matter tending to the high side.
Chemical Analysis.
SAMPLE I.
SAMPLE IV.
Physical appearances.
Colour and
Transparency.
White and opaque.
Colourless and clear.
Smell.
None.
None.
QUANTITATIVE.
Total solids
...
...
..
...
... Parts per 100,000
...
44.000
43.000
Temporary hardness
...
...
...
...
Do.
17.500
17.000
Permanent hardness
...
...
Do.
...
2.500
2.000
Total hardness ..
...
...
...
...
Do.
...
20.000
19.000
Chlorine ...
...
...
...
.„
..
Do.
7.100
7.455
A mmoniacal nitrogen ...
...
...
...
Do.
...
0.006
Trace.
Albuminoid nitrogen ...
...
...
.,.
Do.
...
0.021
6.009
Oxygen absorbed (Tidy's Process)
..
...
Do.
...
0.100
0.064
Nitric nitrogen ...
...
...
...
...
Do.
...
0.062
0.050
QUALITATIVE.
N Nitrites
..
...
......
...
Nil.
Nil.
Sulphates
..
...
...
,..
......
..
...
...
Present.
Present.
Ph osphates ...
...
...
...
...
•••
...
. . .
Nil.
Nil.
Iron, poisonous metals
...
.....
...
...
•••
Nil, nil.
Nil, nil.
109
DINDIGTJL.
WATER SAMPLES TAKEN—25TH AUGUST 1912.
R e m a r k s
. — W a t e r i s d e r i v e d f r o m t w o s o u r c e s ( 1 ) a n i n f i l t r a t i o n g a l l e r y a n d ( 2 ) a d e e p w e l l .
Infiltration gallery was used as a source of supply when samples were taken.
The supply is intermittent. There has been about 4.09 inches of rain since last
analysis.
Bacteriological Analyis .
SAMPLE I.—TAP IN FRONT OF PUMPING STATION (DEEP WELL).
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 n.
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. Group and
Remarks.
Total colonies per cc. on agar at 37° C.—670.
Bile salt lactose, medium.
+
-
1 tube of 20 cc.
...
. . . . . . . . .
1
. . .
1
+ - - - -
- + -
I B. Vesiculosus
. Group I, 9.
2 tubes of 10 cc.
...
...
...
...
2
. . .
2 + —
-
- -
- +
I
Do.
„ II, nit.
3 „ 5 cc.
. . . . . . . . . . . .
3
. . .
3 + - - - -
- + -
I
Do.
... „ III, nil.
3 „ 1 cc. ... ... ... ...
3
. . .
4 +
-
- - - - +
+
I
Do.
„ IV, 1.
3 „ .1 cc.
. . .
. . .
. . . 1
2
5 +
-
- - -
- + -
I
Do.
3 „ .01 cc. ... ... ... ...
. . .
3
6 +
-
- - -
- + + I B. Grunthal.
Fœcal bacilli in 1 cc. and upwards.
7
+
+
- - -
- + - I V B. Coscoroba.
8 +
-
- - -
- + - I B. Vesiculosus ... Class I, nil.
9 +
-
- - - - ++ I B. Grunthal
... „ II, 1.
No vibrios in 100 cc.
10 + -
- - -
- + - I B. Vesiculosus ... „ III, 9.
SAMPLE II—FOUNTAIN No. 19 IN EASTERN END.
No lactose fermenters.
Total colonies per cc. on agar at 37° C.—820.
Bile salt lactose, medium.
+
-
1 tube of 20 cc.
...
. . . . . . . . .
. . .
1
2 tubes of 10 cc.
...
... ...
. . .
2
3 „ 5 cc.
...
...
...
. . .
. . .
3
3 „
1 cc.
... ... ,..
. . .
3
3 „
1 cc
,
...
...
. . .
. . .
3
3 „ .01 cc.
...
. . . . . . . . .
. . .
3
Fœcal bacilli not present in 60 cc.
No vibrios in 100 cc.
SAMPLE III.—FOUNTAIN No. 10 IN DRAUPADI AMMEN STREET.
No lactose fermenters.
Total colonies per cc. on agar at 37° C.—7,040.
Bile salt lactose, medium.
+
-
1 tube of 20 cc.
...
. . . ... ...
. . .
1
2 tubes of 10 cc.
...
...
...
...
. . .
2
3 „ 5 cc.
...
.... ... ...
. . .
3
. . .
3
3 „ 1 cc. ... ... ... ...
3 „ .1 cc.
...
...
...
... . . .
3
3 „ .01 cc.
...
...
...
...
. . .
3
Fœcal bacilli not present in 60 cc.
No vibrios in 100 cc.
REPORT.
Water from the infiltration gallery was being distributed at the time samples were taken and as regards
the number of fœcal germs the water could hardly be better. Presumably the water at the headworks was of
very good quality but no sample was taken. If the omission was due to there being no tap one should be pro-
vided as soon as possible. Taking its freedom from excremental germs into account the huge total count in
the water drawn in Draupadi Ammen Street is remarkable and that in the water drawn in the eastern quarter
is not low. The pipes must be in a dirty state to account for this, and should be scoured out. As usual the
well water is worse than the river water but it is not very had this time either. Chemically the hardness of the
water is always against it and in this respect the deep well water is the better. Most of the hardness could be
got rid of by clarking.
112
Chemical Analysis.
SAMPLE I.
SAMPLE III.
Physical appearances.
Colour and
Transparency.
Colourless and
clear.
Colourless and
clear.
Smell.
None.
None.
QUANTITATIVE.
Total solids
Parts per 100,000
22.000
22.000
Temporary hardness
Do.
8.000
8.000
Permanent hardness
Do.
2.000
2.000
Total hardness
Do.
10.000
10.000
Chlorine
Do.
2.840
2.840
Ammoniacal nitrogen
Do.
Trace.
Trace.
Albuminoid nitrogen
Do.
0.003
0.004
Oxygen absorbed (Tidy's Process)
Do.
0.020
0.028
Nitric nitrogen
Do.
0.062
0.050
QUALITATIVE.
Nitrites
N i l .
Nil.
Sulphates
Present.
Present.
Phosphates
Nil.
Nil.
Iron, poisonous metals
Nil, nil.
Nil, nil.
110
Chemical Analysis.
SAMPLE I.
SAMPLE II.
Physical appearances.
Colour and
Transparency.
Colourless and
clear.
Colourless and.
clear.
Smell.
None.
None.
QUANTITATIVE.
Total solids
Parts per 100,000
35.400
44.000
Temporary hardness
Do.
14.000
21.000
Permanent hardness
Do.
3.000
6.000
Total hardness
Do.
17.000
27.000
Chlorine
Do.
2.840
2.307
Ammoniacal nitrogen
Do.
Trace.
Trace.
Albuminoid nitrogen
Do.
Trace.
Trace.
Oxygen absorbed (Tidy's Process)
Do.
0.010
0.010
Nitric nitrogen
Do.
0.150
0.175
QUALITATIVE.
Nitrites
Nil.
Nil.
Sulphates
Present.
Present.
Phosphates
Nil.
Nil.
Iron, poisonous metals
Nil, nil.
Nil, nil.
SAMPLE III.
Physical appearances.
Colour and
Transparency.
Colourless and clear.
Smell.
None.
QUANTITATIVE.
Total solids
Parts per 100,000
42.400
Temporary hardness
Do.
24.000
Permanent hardness
Do.
4.000
Total hardness
Do.
28.000
Chlorine
Do.
2.485
Ammoniacal nitrogen
Do.
Trace.
Albuminoid nitrogen
Do.
Trace.
Oxygen absorbed (Tidy's Process)
Do.
0.010
Nitric nitrogen
Do.
0.200
QUALITATIVE.
Nitrites
Nil.
Sulphates
Present.
Phosphates
Nil.
Iron, poisonous metals
Nil, nil.
111
CONJEEVERAM.
WATER SAMPLES TAKEN—1ST SEPTEMBER 1912.
Remarks. —The river-bed of the Vagavati was dry when samples were taken. The supply is
intermittent. There has been about 9.52 inches of rain since last analysis.
Bacteriological Analysis.
SAMPLE I.—TAP IN FRONT OF PUMPING STATION.
Number. Lact ose. Saccharos e.
D u l c i t e .
Adoni t e . Inulin. Vo g e s a n d P r o s k . Indol.
Mo t i l i t y . Group.
Name of Bacilli.
Group and
Remarks
Total colonies per cc. on agar at 37° C.—2,840.
Bile salt lactose, medium.
+ -
1 tube of 20 cc.
...
...
..
1
. . .
2 tubes of 10 cc.
...
...
1
1
1 + +
- + -
- -
- IV B. Gasoformans
... Group I, nil.
3
,,
5 cc.
3
. . .
2 + +
- + -
- -
- IV
Do.
„
II, nil.
3
,,
1 cc.
...
...
...
...
...
3
3 + +
- + -
- -
- IV
Do.
...
,,
III, nil.
3 ,,
.1 cc.
...
...
...
...
. . .
3
4 + +
- + -
- -
- IV
Do.
,,
IV, 10.
3
,,
.01 cc....
...
. . .
3
5 + +
- + - + -
- IV B. Lactis ærogenes .
6 + +
- + -
- -
- IV B. Gasoformans.
7 + +
- + -
- -
- IV
Do.
Fœcal bacilli in 5 cc. and upwards.
8 + +
- + -
- -
- IV
Do,
... Class
I, nil.
9
+ + - + - - -
- IV
Do.
...
„
II, 10.
No vibrios in 100 cc.
10 + + - + -
- -
- IV
Do.
„ III, nil.
SAMPLE II.—TAP ADJOINING THE SERVICE RESERVOIR.
1 + +
- - - - +
- IV B. Coscoroba
... Group I, nil.
Total colonies per cc. on agar at 37° C.—60.
2 + +
- - - - +
- IV
Do.
„ II, nil.
Bile salt lactose, medium.
+
-
3
+ + -
- - -
+ - IV
Do.
...
„ III, nil.
4 + +
- - - - +
- IV
Do.
...
„ IV, 10.
5 + +
- - - - +
- 'IV
Do.
6
+ +
- - - -
+ - IV
Do.
1. tube of 20 cc.
...
...
...
...
1
. . .
7 +
+ - - - - +
- IV
Do.
2 tubes of 10 cc.
...
...
...
...
2
. . .
8 + +
- - - - +
- IV
Do.
... Class I, nil.
3
„
5 cc.
...
...
3
. . .
9 + +
- - - - +
- IV
Do.
„ II, 10.
3
„
1 cc.
...
...
...
...
. . .
3
10 + +
-
-
-
- +
- IV
Do.
„ III, nil.
3
„
.1 cc.
...
...
...
...
. . .
3
3 „ .01 cc....
...
. . .
3
Fœcal bacilli in 5 cc. and upwards.
No vibrios in 100 cc.
SAMPLE III.—TAP NEAR SEEVARAM TOLL-GATE.
1 + +
- +
- - - - IV B. Gasoformans ... Group I, nil.
Total colonies per cc. on agar at 37° C.—70.
2 + +
- +
- +
- - IV B. Lactis ærogenes.
„
II, nil.
3 + +
- +
- - - - IV B. Gasoformans ...
„ III,,1.
Bile salt lactose, medium.
+
-
4 + + - + - - - - IV
Do.
. . .
„ V, 9.
5 + + — + — — — — IV
Do.
6
+ +
- + - -
- - IV
Do.
1 tube of 20 cc.
...
...
...
1
...
7 + +
- +
- +
- - IV B. Lactis ærogenes.
2 tubes of 10 cc.
....
...
...
...
1
1
8 + +
- +
- +
- - IV
Do.
Class
I, nil.
3
,,
5 cc.
...
...
. . .
3
. . .
9
+ + - + - + - - IV
Do.
„
II,10.
3 „
1 c c .
. . .
. . .
. . .
3
10 + + + +
- +
- -
I V B. 67
...
. . .
„ III, nil.
3
„
.1 cc.
...
...
...
...
. . .
3
3
„
.0 cc.
...
...
3
Fœcal bacilli in 5 cc. and upwards.
No vibrios in 100 cc.
REPORT.
Although not at all bad the water is not of the same high quality as it was at this season last year. The
condition is more like what it was in 1910. A very large total count in combination with surprisingly few
fœ cal germs has been noticed before in this supply. In the water as distributed the total count has been very
largely reduced so the water is of very fair quality. Chemically also the water is a definitely good one.
32
115
SAMPLE No. III.
SAMPLE No. V.
Physical appearances.
Colour and
Transparency.
Colourless and clear. Colourless and clear.
Smell.
None.
None.
QUANTITATIVE.
Total solids
Parts per 100,000
48.000
37.000
Temporary hardness
Do
2 2 . 0 0 0
16.000
Permanent hardness
Do.
1.000
2.000
Total hardness
Do.
23.000
18.000
Chlorine
Do.
1.775
1.420
Ammoniacal nitrogen
Do.
0.002
Trace.
Albuminoid nitrogen
Do.
0.003
Trace.
Oxygen absorbed ( Tidy's Process)
Do.
0.039
0.010
Nitric nitrogen
Do.
0.075
0.100
QUALITATIVE.
Nitrites
Nil .
Nil.
Sulphates
Trace.
Trace.
Phosphates
Nil .
Nil.
Iron, poisonous metals
Nil, nil.
Nil, nil .
117
REPORT.
A very marked deterioration is noticeable in the Nellore Water on this occasion, which there
does not seem to be any thing to account for. This falling off is noticeable in all the samples
and it is characterised by an enormous increase in the excremental germs. These germs are
perhaps not of a very objectionable kind, but their presence indicates a liability to pollution
which in wetter weather might be of a dangerous nature. Curiously enough the sample taken
from a stagnant pool in the river-bed shows the smallest total count of any, though chemically
it is distinctly inferior. Any circumstances, that can be recognized as contributory to a state of
affairs so much inferior to what was the case in June and at this season last year, should be
guarded against.
Chemically the water as distributed is much as usual.
Chemical Analyses.
SAMPLE I.
SAMPLE III.
Physical appearances.
Colour and
Transparency.
White and opaque.
Colourless and clear.
Smell.
None.
N o n e .
QUANTITATIVE.
Total solids ...
..
...
...
...
Parts per 100,000 ...
55.000
42.000
Temporary hardness...
...
...
Do.
...
13.500
14.500
Permanent hardness
...
...
. . .
Do.
...
1.500
2.500
Total hardness
...
...
...
Do.
...
15.000
17.000
Chlorine
...
...
...
...
...
Do.
...
8.165
6.390
Ammoniacal nitrogen ... ... ...
Do.
...
0.002
0.002
Albuminoid nitrogen.
...
Do.
...
0.015
0.003
Oxygen absorbed (Tidy' s Process) ...
...
Do.
...
0.088
0.029
Nitric nitrogen
...
...
..
...
Do.
...
Nil.
0.037
QUALITATIVE.
Nitrites
...
...
...
...
...
...
...
...
Nil.
Nil .
Sulphates
...
...
...
...
...
...
Present.
Present.
Phosphates ...
...
...
...
...
...
...
...
...
Nil.
Nil.
Iron, poisonous metals
...
...
...
...
...
...
...
Nil, nil.
Nil, nil.
34
119
SAMPLE V.—TAP IN FRONT OF POLICE STATION —TAP No. 17.
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 .
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.
Group and
Remarks.
Total colonies per cc. on agar at 37° C.—780
Bile salt lactose, medium.
+
-
1 tube of 20 cc.
...
...
... ...
1
2 tubes of 10 cc.
...
...
...
2
No lactose fermenters.
3 „ 5 cc.
...
...
3
3
„
1 cc.
...
...
...
. . .
. . .
3
3
„
. 1
c c .
. . .
. . .
. . .
. . .
. . .
3
3
„
. 0 1
c c .
. . .
. . .
. . .
. . . ...
3
Fœcal bacilli not present in 60 cc.
No vibrios in 100 cc.
REPORT.
The results got with the sample from the Sam alkota Canal are much what we would expect in its flooded
condition. They also serve to demonstrate the great value of simple sedimentation in the purification of water.
The results got with the water of the settling tank and with the water as distributed are very good and leave
little to be desired. The high figure for free ammonia and organic matter in the tank water is a little difficult
to explain and may be due to some circumstance of an accidental kind.
Chemical Analyses.
SAMPLE I.
SAMPLE II.
Physical appearances.
Colour and
Transparency.
White and opaque.
White and hazy.
Smell.
None.
None.
QUANTITATIVE.
Total solids ...
...
...
...
... Parts per 100,000
...
23.000
16.000
Temporary hardness
...
...
...
Do.
...
5.500
6.000
Permanent hardness
... ...
...
...
Do.
...
2.500
2.000
Total hardness
...
. . .
...
Do.
...
8.000
8.000
Chlorine
...
...
...
...
...
Do.
...
0 . 3 5 5
1.065
Ammoniacal nitrogen
...
...
...
Do.
...
T r a c e .
0.006
Albuminoid nitrogen...
...
...
Do.
...
0.012
0.026
Oxygen absorbed ( Tidy's Process )
...
Do.
...
0.114
0.114
Nitric nitrogen...
...
...
...
Do.
...
Nil.
Nil.
QUALITATIVE.
Nitrites
...
...
...
...
...
...
...
...
Nil.
N i l
Sulphates ...
...
...
...
...
...
...
...
...
Trace.
Trace.
Phosphates ...
...
...
...
. . .
....
...
. . .
Nil.
Nil.
Iron, poisonous metals ...
...
.
. . .
...
. . .
. . .
. . .
Nil, nil.
Nil, nil.
SAMPLE IV.
Physical appearances.
Colour and
Transparency.
Slightly yellowish
b u t c l e a r .
Smell.
None.
QUANTITATIVE.
Total solids
...
...
...
...
...
...
...
... Parts per 100,000 ...
14.400
Temporary hardness
... ... ... ... ...
Do.
...
7.000
Permanent hardness
...
...
...
...
...
...
...
Do.
...
2.000
Total hardness
...
...
...
...
...
...
Do.
...
9.000
Chlorine
...
...
...
...
...
.....
...
Do.
...
1.065
Ammoniacal nitrogen
...
...
...
...
...
...
...
Do.
...
Trace.
Albuminoid nitrogen
...
...
...
...
...
...
...
Do.
...
0.006
Oxygen absorbed (Tidy's Process)
. ..
...
...
...
Do.
...
0.057
Nitric nitrogen
...
...
...
...
...
...
Do.
...
Trace.
QUALITATIVE.
Nitrites
...
...
...
...
...
...
...
...
...
...
...
Nil.
Sulphates
...
...
...
...
...
...
...
...
...
...
...
...
Trace.
Phosphates
...
...
...
...
...
..
...
...
. . .
Nil.
Iron, poisonous metals ...
...
...
...
...
...
...
...
... Nil, nil.