42
SAMPLE IV —A TAP IN EASTERN CORNER OPPOSITE TO MUNICIPAL
HOSPITAL
C o l o n y n u m b e r .
La c t os e .
S a c c h a r o s e .
D u l 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 .
Mo t i l i t y .
Gr oup.
Bacillus.
Group and
Remarks.
Total colonies per cc. on agar at 37°—1,680.
Bile salt lactose, medium
+
1 tube of 20 cc.
..
..
..
1
..
1
+ + - + - + - - IV B. Lactis ærogenes.
-..
2 tubes of 10 cc.
..
..
..
2
..
2 + + - +
-
+ - - IV
Do.
3 "
5 cc.
..
..
2
1
3 + + - - - - + - I B. Vesiculosus
.. Group 1,2,
3 "
1 cc.
..
..
1
2
4 + + - +
-
- - - I V B. Gasoformans ..
,, II,nil.
3 ,,
.1 cc.
..
..
..
..
3
5 + + - + -
-
- - IV
Do.
" III
„
nil.
3 „
.01 cc.
..
..
..
3
6 + + - + - +
-
- IV B. Lactis ærogenes.
" I V , 8 .
.
7 .+ +
-
+
- -
-
-
IV B. Gasoformans
,
Class I,n i l
Fœcal bacilli in 5 cc. and upwards.
8 + + +
- - - - - -
I B. Mutabilis
..
" I I , 8 ,
9 + + - + - + - -
I V
B. Lactis ærogenes.
" III, 2.
No vibrios in 100 cc.
'
10 +
++
-
+ -
-
- - IV IB. Gasoforrnans
„
S A M P L E . V — A T A P , W E S T E R N C O R N E R I N K I L C H U P E T R O A D .
1 +
- - - - -
+
+
I B. Grunthal
.. Group I,4.
Total colonies per cc. on agar at 37º— 3,600.
Bile salt lactose, medium
+
-
2 +
- - - - - -
+ I B. 7
..
, ,
" I I ,
n i l
.
_
3 + + - - - - +
+ IV B. 106 ..
..
,,III, nil
„
4 + +
-
- - - -
-
IV B. 111..
" I V , 6 .
_
1 tube of 20 cc.
. .
"
1
. . 5 +
- -
_
- - -
+ +
I
B . G r u n t h a l . . Class I,
n i l
2 tubes of 10 cc.
..
. .
. .
2
. .
6 + + - + - + - - IV B. Lactis ærogenes.
„ II,
3 "
5 cc.
. .
. .
. .
3
. . 7 + + - - - - + - IV B Coscoroba
.
" III, 4,
3 "
1cc.
..
..
3
..
8 +
- - - - -
+ - I B. Vesiculosus
.. Un d e t e r mi n e d .
3 ".1 cc.
. . , ,
2
1
9 + + - + - + - - IV B. Lactis ærogenes.
1.
3 „
.01 cc.
. .
. .
. .
. .
3
10
+ +
-
+
-
+ -
-
IV
Do.
Fœcal bacilli in .1 cc. and upwards.
No vibrios in 100 cc.
REPORT.
The spring water at Ádóni is liable to very curions fluctuations and any possible local cause for this should
be looked into. Last quarter the water was bacterially of quite exceptional purity, this quarter it is very
indifferent in quality to say the least. The water from the tank shows some slight improvement but in
comparison to what has been, is still very bad. A further improvement is seen in the water of the filter
reservoir so that in this occasion the filtration may be said to be useful to a slight degree. In this respect
past experience has been not a little conflicting. The water from the tap opposite the Municipal hospital shows
the same number of fœcal organisms as does the filtered water, but there is evidence of an undesirable variety
in species creeping in. In all respects the water from the tap in the Kilchupet road is much worse than the
last ; it is indeed the worst of the samples examined on this occasion. Compared with the filtered water the
fœcal germs are increased fifty-fold, and the large number of species present points to very extensive pollution.
Either this section of the pipe line is very dirty or there are leaks into it.
Chemically this water-supply has always been bad, sometimes not quite so bad as at others but always far
from being what it should be. The consistent bad feature is the high amount of organic matter of animal
origin in the water. It is indeed a matter for great surprise that this extraordinary amount of organic
material of animal origin can get access to the water without a corresponding number of fœcal germs accom-
panying it. This aspect of the question is not so marked as on the last occasion but is still quite noteworthy.
I wish to point out here and correct a very regrettable error in the report on this water for the quarter
ending 30th September 1909. It is there stated that the organic matter is of vegetable origin. This is not the
case. Not only is the organic matter present in record amount for this water-supply, but the proportion it
bears to absorbed oxygen points definitely to its being of animal origin. This highly suspicious ratio has
been observed on every occasion that this water has been analysed.
Chemical Analyses,
SAMPLE II.
SAMPLE V.
Physical appearances.
Colour and
Transparency.
Greenish and
opaque.
Greenish and
opaque.
Smell.
None.
None .
QUANTITATIVE.
Total solids
..
..
Parts per 100,000 ..
20.400
19.200
Temporary hardness
. . . .
Do.
3.000
2.500
Permanent hardnes
..
. .
Do..
2.500
3.000
Total hardness ..
..
. . . .
Do....
5 . 5 0 0
5.500
Chlorine
..
..
. . . .
Do.. .
5 . 5 0 0
5 . 5 0 0
Ammoniacal nitrogen
..
'
. . .
Do.
0.004
0 . 0 0 4
Albuminoid. nitrogen
..
..
Do.
..
0.078
0.
056
Oxygen absorbed ( Ti dy' s process)
... .
Do.
..
0.333
0.266
Nitric nitrogen ..
. . . .
Do.
..
0.050
0.250
QUALITATIVE .
Nitrites
..
..
..
.
.
.
. . . . .
Nil .
Nil.
Sulphates
.
. . . . .
.
. . .
. .
Trace.
Trace.
Phosphates
.
..
. .
'
. . .
Nil .
Nil.
Iron, poisonous metals ...
. . . .
.
. . . . .
_Nil, nil.
Nil, nil.