155
SAMPLE V.—FROM NORTHERN CORNER, FROM A
PILLAR
FOUNTAIN, A FEW YARDS OFF THE MUNICIPAL HOSPITAL.
C o l o n y 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 e .
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 co. on agar at 37°—860.
Bile salt lactose, medium.
+
-
Group
I, nil.
1 tube of 20 cc. of water taken ..
..
1
..
1
+
+
- - - - + - IV E. Coscoroba
..
2 tubes of 10 cc
7 /
..••
2
• •
2 + +
- - - - + - IV
Do.
..
„
II, nil.
3
„
5 cc
..
. .
• •
3 + + - - - - + - IV
Do.
..
„
III, nil.
3
• •
4 + + - - - -
+ - IV
Do.
..
,,
IV, 10.
3
„
1 cc
..
..
3
,,
.1 cc.
,,
..
..
1
2
5
+ + - - - -
+
- IV
Do.
..
6 + + - - - - + - IV
Do.
..
3
„
.01 CC.
...
. .
3
Do.
..
7 + + - - - - + - IV
Fœcal bacilli in 1 cc. and upwards.
8 + + - - - - + - IV
Do.
.. Class I, nil.
9
+ + - - - - + - IV
Do.
• •
,1
II, 10.
No vibrios in 100 cc.
Do.
• •
f ,
III, nil.
10 +
+ - - -
- +
- IV
REPORT.
Under certain conditions which do not seem to be in any clear relation to the rainfall the wells and
river water from which the Tirupati water supply is drawn can be exceedingly good. On this occasion
though the wells show very high total counts the number of excremental germs is so small as to be almost
negligeable, especially when we take their character into account. The water from the collecting chamber
is even better as it shows a very low total count in addition to the small number of fœcal germs. As usual
the water from the distributary system is nothing like so good, but on this occasion it cannot be said to be
very bad. It has been strikingly worse. Chemically there is little to note. The water of the east well is
softer, and generally slightly better than that of the west well.
Chemical Analyses.
S A M P L E I .
SAMPLE II.
Physical appearances.
Colour and
Transparency.
Colourless and clear.
Colourless and clear.
Smell.
None.
None.
QUANTITATIVE.
24·000
48·600
Total solids
..
..
..
..
..
Parts per 100,000 ..
Temporary hardness ..
..
..
..
Do.
15·000
24·500
1·000
0·500
Permanent hardness
..
Do.
25·000
Total hardness ..
..
..
..
..
Do
..
16·000
1·420
Chlorine
..
..
..
..
..
Do.
..
0·710
0·003
Ammoniacal nitrogen ..
..
..
..
Do.
..
Trace.
0·002
Albuminoid nitrogen ..
..
..
..
D o .
0·002
Oxygen absorbed (Tidy's Process)
..
..
Do.
..
0·019
0·019
0·062
0 · 0 7 5
Nitric nitrogen ..
..
..
..
Do.
QUALITATIVE.
Nil.
Nil.
Nitrites
••
.•
..
..
..
••
••
••
.•
Sulphates
..
...
..
..
..
..
..
..
..
Present.
Present.
Phospates
..
..
..
..
..
..
..
..
..
Nil.
Nil.
Nil, nil.
Iron poisonous metals
••
••
••
-
..
••
.•
Nil, nil.
SAMPLE V.
Physical appearances.
Colour and
Transparency.
Colourless and clear.
Smell
None.
QUANTITATIVE.
38·000
Total solids
..
..
..
..
..
..
..
..
Parts per 100,000 ..
Temporary hardness
..
..
..
..
..
..
..
Do.
19·000
Permanent hardness
-
..
..
..
• •
• •
• •
Do.
• •
1·000
Total hardness
••
..
..
..
..
..
..
Do.
..
20·000
Chlorine
• .
..
..
• •
..
..
..
..
Do.
1·242
Trace.
Ammoniacal nitrogen
••
.•
••
••
..
..
Do.
..
Albuminoid nitrogen ..
..
..
..
..
..
..
Do.
..
Trace.
Oxygen absorbed ( Tidy's Process)
..
..
..
• -
..
Do.
..
0 · 0 1 3
Nitric nitrogen
..
..
..
..
..
..
..
Do.
..
0·075
QUALITATIVE. .
Nitrites
••
..
••
••
..
..
. ,
• •
••
..
..
Nil.
S ulphates
..
..
..
..
..
..
..
..
..
..
..
Present.
Phosphates
..
..
• •
• •
..
..
..
•
• •
• •
..
Nil.
Iron, poisonous metals
..
..
..
..
..
..
..
..
..
..
Nil, nil.