47
SAMPLE V.—A PILLAR FOUNTAIN IN NORTHERN CORNER, A FEW
YARDS FROM THE MUNICIPAL HOSPITAL.
Total colonies per cc. on agar at 37° C.—710.
Nu mb e r . L a c t o s e .
S a c o h a r o s e .
D u l c i t e . Ad o n i t e . I n u l i n e .
V o g e s a n d p r o s k . l .
I ndol .
Mo t i l i t y .
Gr o u p .
Name of Bacilli .
Group and
Remarks,
Bile salt lactose, medium.
1 tube of 20 cc.
. . . ...
. . . ...
1
...
1
+ + - + - + - - IV B. Lactic ærogenes... G r o u p I , 1 .
2 tubes of 10 cc. ...
. . .
. . . ...
2 ...
2 + + - - - - + - IV B. Coscoroba
... ,, II nil.
3 ,, 5 cc.
. . . ...
... ... 3
...
3
+ + - + - + - - IV B. Lactis ærogenes...
n i l
.
3 , , 1 c c .
... ...
... ... 3
. . .
4 + + - + - + - - IV
Do.
n i l
.
3 ,, .1cc.
... ...
... ...
1
2
5 + + - - - - + - IV B. Coscoroba.
3 ,, .01 cc.
. . .
...
. . . . . .
1
2
6
+ + - - - - + - IV
Do.
Fœcal bacilli in 1 cc. and upwards.
7 + + - - - - + - IV
D o .
8 + + - - - - +- IV
Do. ...
Class I,nil.
9 + + - - - - + - IV
Do. ...
, , I I , n i l .
No vibrios in 100 cc.
10 +
- - - - -
+ - I B. Vesiculosus ...
,,III, nil.
REPORT.
The well to the west of headworks affords as usual an excellent source of water supply. But the water of
the east well has been decidedly inferior in quality during the past and the present quarter. The sample from
the collecting chamber shows a very high total count. The distributary system shows signs of gross pollution
probably due to old pipes. The result has been borne out chemically also.
Chemical Analyses .
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 ...
24. 200
49.000
Temporary hardness
...
...
. . .
. . .
. . .
Do.
...
11.000
27.000
Permanent hardness ...
. . .
... ... ...
. . .
Do.
...
2.000
1.000
Total hardness
...
... ... ... ... ...
D o .
. . .
1 3 . 0 0 0
28.000
Chlorine
...
... ... ... ... ... ...
Do.
...
1 . 0 6 5
1.420
Ammoniacal nitrogen
. . .
...
. . .
. . . ...
Do.
...
0.002
Trace.
Albuminoid nitrogen
. . . ...
. . .
. . . ...
Do.
...
0 . 0 0 4
0.002
Oxygen absorbed (Tidy's Process) ...
...
. . . ...
Do.
...
0.019
0.019
Nitric nitrogen
...
...
. . .
. . .
. . .
Do.
0.050
0.075
QUALITATIVE.
Nitrites
...
. . .
... ... ... ... ... ...
...
...
...
Nil.
Nil.
Sulphates ...
. . .
... ...
. . .
. . . ... ...
. . . . . .
. . .
Trace.
Trace.
Phosphates ...
...
. . . ...
. . . ... . . .
...
... ...
. . .
N i l .
Nil.
Iron, poisonous metal
. . . ...
. . .
. . .
. . . ...
...
. . .
... Nil,nil.
Nil,nil.
SAMPLE V.
Physical appearances.
Colour and
Transparency.
Colourless and clear.
Smell.
None.
QUANTITATIVE.
Total solids ...
...
. . . ...
. . .
. . . . . . Parts per 100,000 ...
42.000
Temporary hardness
. . . ...
...
. . . . . .
Do.
. . .
24.000
Permanent hardnes
. . . ... ... ...
... Do.
...
1.000
Total hardness
...
. . . ... ... ...
...
Do.
...
25.000
Chlorine ...
. . . ...
. . .
. . . ...
Do.
...
1.420
Ammoniacal nitrogen
. . . ...
. . .
. . .
. . .
Do.
...
Trace.
Albuminoid nitrogen
. . . ... ...
...
Do.
...
0.003
Oxygen absorbed (Tidy's Process)
...
. . . ...
Do.
...
0.019
Nitric nitrogen
...
. . . ...
... ...
. . .
Do.
...
0.075
QUALITATIVE.
Nitrites
... ...
... ...
. . .
. . . . . .
... . . . . . .
...
N i l .
.
Sulphates ...
... ...
...
. . .
. . . . . . ...
...
. . .
...
Trace.
Phosphates ... ...
... ...
. . .
. . .
. . .
. . . . . . . . .
Nil.
Iron, poisonous metals ... ... ...
. . . ...
... ... ...
...
Nil, nil .