66
SAMPLE V.—FOUNTAIN IN FRONT OF OLD VETERINARY 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 .
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 .
Bacillus.
Group and
Remarks.
Total colonies per cc. on agar at 37º—2,520.
+
-
Bible salt lactose, medium.
1 tube of 20 cc. . .
. .
. .
. . 1
. . 1 + + - + - - - - IV B. Gasoformans
Group
I ,
n i l .
2 + + - + + - - - - IV
Do.
. . " II,n i l .
2 tubes of 10 cc. ..
. .
. .
. . 1
1
3 + + - + - - - - I V
Do.
..
" III, nil,
2
3
"
5 c c .
..
. .
..
. .
1
4 + + - + - - - - IV
Do.
. .
”
I V , 1 0 .
3
..
3
" 1cc. . .
. .
. .
. .
5 + + - + - - - - IV
Do.
3
" -1 cc. ..
. .
. .
. .
3
' •
6 + + - + - - - - IV
Do.
. .
Class
I ,
n i l .
3
"
- 0 1 c c .
. .
. .
..
. .
3 7 + + - + - - - - IV
Do.
.. " I I , 1 0 .
8 + + -+ - - + + IV B. 100 .. .. • ,, 1II, nil,
F œ c a l b a c i l l i i n 5 c c . a n d u p w a r d s .
9 + + - + - - - - IV B. Gasoformans.
No vibrios in 100 cc.
10 +++ - + - - - - IV
Do.
SAMPLE VI.—SAMPLE OF WATER AS IT STANDS ON THE TOP OF
FILTER BED.
1 + + + - - + - - IV B. 112 .. .. Group I, 1.
2 + + - + + - - - III
?
" II, nil.
3 + + + + - - -- III. B. Pnemoniæ
„ I I I , 6 .
Total colonies per cc. on agar at 37°—1,890.
+
- 4 + + + + - - - - III
Do.
" IV, 3.
Bile salt lactose, medium.
5 + + + + + - - - III
?
1
. . 6 + - - - - - + - I B. Vesiculosus.
1 tube of 20 cc. ..
..
..
. . 1
1 7 + + + + + - - - III
?
Class I, nil.
2 tubes of 10 cc. ..
. .
. .
. . 1
2 8 + + - - - + - - IV B. 112 .. .. " II, 2.
3
" 5
cc . .
. .
. .
. . . .
3 9 + + + + + - -- - III
?
" III, 1.
3
" 1 co. ..
..
..
. . ..
3 10 ++ + - - - + -- - IV B. 112 .. .. Undetermined, 7.
3
"
- 1
c c .
. .
. .
. .
. . . .
3
3
"
- 0 1 c c .
. .
. .
. .
. .
Fœcal bacilli in 20 cc. and upwards.
No vibrios in 100 cc.
REPORT.
The water of the Samalkota Canal being essentially a river water must be considered pretty good on
this occasion. It has been better but it has also been very much worse. The water from the storage tank is
improved mostly by the reduction in the total number of germs present. A farther improvement is seen in
the reduction of the number of varieties in the fœcal germs. The susceptibility of B. No. 112 to the action of
sunlight, etc., not having been determined it is not possible to place it, but it is hardly likely to belong to
class I. A still farther improvement is to be noted in the filtered water which may be said to be in quite a
satisfactory condition. From the filtered water to that from the Pillar Fountain near the Port Railway
Station is a very great fall. The total count has gone up eightfold and the fœcal germs present are the most
susceptible of the most susceptible class. Silt in the pipes might account for the former but hardly for the
latter. Any possible local cause such as leakage to account for the presence of this newcomer in the
Cocanada water should be investigated. The branch of the pipe going to the old Veterinary Hospital
probably has silt in it, as the total count is also largely increased. Except for this the water is much as was
the filtered water. Sample VI gives rather curious results considering its source. It has a much higher
total count than the storage tank water, but much fewer fœcal germs though many more varieties are present.
W h y t h i s w a t e r s h o u l d s h e w t h e s e m a r k e d v a r i a t i o n s f r o m t h e w a t e r o f t h e s t o r a g e t a n k f r o m w h i c h i t i s
presumably derived is not easy to see. Chemically the water is not bad and calls for little remarks.
Chemical Analyses.
SAMPLE II.
SAMPLE IV.
Physical appearances.
Colour and
Transparency.
_
Yellowish and
hazy.
Yellowish but
clear.
Smell.
None.
None.
QUANTITATIVE.
Total solids .. .. .. ..
Parts per 100,000 ..
18.200
18.200
Temporary hardness .. .. ..
Do.
..
5.500
5.500
Permanent hardness ..
..
..
Do.
. .
1.500
1.500
Total hardness ..
..
..
..
Do.
..
7.000
7.000
Chlorine
..
..
..
..
Do.
..
2.840
2.840
Ammoniacal nitrogen ..
..
..
Do.
..
0.004
Trace.
Albuminoid nitrogen ..
..
..
Do.
..
0.015
0.007
Oxygen absorbed (Tidy's Process) .. ..
Do.
..
0.117
0.061
Nitric nitrogen
..
..
.
.
..
Do.
. .
Trace.
0.037
QUALITATIVE.
Nitrites
..
..
..
..
..
..
..
Nil.
Nil.
Sulphates
..
..
..
..
..
..
..
Present.
Present.
Phosphates ..
..
..
..
.. .. ..
Nil.
Nil.
Iron, poisonous metals .. .. .. .. .. ..
Nil, nil.
N i l , n i l .