71
NELLORE.
WATER SAMPLES TAKEN—4TH JUNE 1912.
Remarks.—The sample was not taken from the river–bed as there was a very small flow of
water on the other bank of the river. The supply is intermittent. There was
no rain since last analysis.
Bacteriological Analysis.
SAMPLE I.—TAP IN FRONT OF PUMPING STATION AT HEAD-
WORKS.
Number . L a c t o s e .
S a c c h a r o s e .
Du l c i t e . Adoni t e .
I n u l i n .
V o g e s a n d P r o s k .
Indol.
M o t i l i t y .
Group.
Total colonies per cc. on agar at 37° C.—4,020.
Name of Bacilli.
Group and
Remarks.
Bile salt lactose, medium.
+
-
1 tube of 20 cc. ...
...
...
...
1
..
1 + + - - -
- + - IV B. Coscoroba
... Group I, 4.
2 tubes of 10 cc. ...
...
...
2
- .
2 + - - - - - + + I B. Grunthal.
„
II, nil.
3
„ 5
cc. ...
...
...
...
3
. . . 3 + - - - - - + - I B. Vesiculosus
.:.
„ III, nil.
3
,,
1 cc. ...
...
1
2
4 + + - - - - + - IV B. Coscoroba
...
„ IV, 6.
3
„
.1 cc. ...
...
...
.,. ...
3
5 + + - - - - + - IV
Do.
3
„ .01 cc. ... ... ... ...
...
3
6 + - - - - + - I B. Vesiculosus.
7
+ + - - - - -
- IV B. 111.
Fœcal bacilli in 5 cc. and upwards.
8 + + - - - - + - IV B. Coscoroba
... Class I, nil.
9 + - - - - - + - I B. Vesiculosus ...
„ II, 5.
No vibrios in 100 cc.
10 + + - - - - + - IV B. Coscoroba
...
„
III, 4.
Undetermined, 1.
SAMPLE II.—TAP IN EASTERN CORNER—FOUNTAIN No. 3,
NAVVAPET.
1 + +
- - - - +
- IV B. Coscoroba
... Group I, nil.
Total colonies per cc. on agar at 37° C.—40.
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
7 + + - - - - + - IV
Do.
1 tube of 20 cc. ...
...
...
... ...
1
8 + + - - - - + - IV
Do.
... Class I, nil.
2 tubes of 10 cc. ...
...
...
...
I
1
9 + + - - - - + - IV
Do....
„
II, 10.
3
„ 5 c c
3 10 + + - - - - + - IV
Do.
...
„ III, nil..
3
„
1 cc, ...
...
... ...
3
.
..
3
„
'1 cc..
... ...
3
3
„
. 0 1 c c .
. . .
. . .
3
Fœcal bacilli present in 60 cc.
No vibrios in 100 cc.
SAMPLE III.—TAP IN FRONT OF DISTRICT COURT.
1 + +
- - - - +
- IV B. Coscoroba
... Group I, nil.
Total colonies per cc. on agar at 37° C.—4,730.
2 + + - - - - + - IV
Do.
„
II, nil.
3 + + - - - - + - IV
Do.
...
„
„
III,
nil.
Bile salt lactose, medium.
+
_
4 + + - - - - + - IV
D o . . . .
„
IV, 10.
5 + + - - - - + - IV
Do.
6 + + - - - - + - IV
Do.
7 + + - - - - + - IV
Do.
1 tube of 20 cc. ...
....
...
...
1
8 + + - - - - + - 1V
Do.
... Class I, nil,
2 tubes of 10 cc. ...
...
...
... ...
2
9 + + - - - - + - IV
Do.
...
„
II,
10.
3
„
5 cc. ...
...
...
1
2 10 + + -- - - - - - - + - IV
Do.
...
„
III, nil,
3
„
1 c c
3
3
„
.1 cc.
..
...
...
... ...
3
3
„
. 0 1 c c .
. . .
. . .
. . .
. . . ...
3
Fœcal bacilli in 20 cc. and upwards.
No vibrios in 100 cc.
REPORT.
As regards its content of fœcal germs the Nellore water is usually pretty good at this season, and there
is on this occasion no exception to the rule. That being so, the remarkably high total counts in the water at
the head works and at the District Court are hard to account for, as is also the extremely low total count in
the water at Navvapet. Is this one of the mysteries of pipe action ? Chemically the water is on the hard
side but is otherwise fair. It seems to pick up a good deal of organic matter from the pipes.