68
VELLORE.
WATER SAMPLES TAKEN—28TH SEPTEMBER 1911.
REMARKS.—The tank now contains about 18.90 feet of water. The supply is intermittent. There has been about
6.71 inches of rain since last analysis.
Bacteriological Analyses.
SAMPLE I.—UNFILTERED WATER FROM A TAP
BEFORE IT PASSES
TO FILTER BEDS.
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 .
Group.
Name of Bacilli.
Group and
Remarks.
Total colonies per cc. on agar at 37° C.—8,700.
Bile salt lactose, medium.
+
-
1 tube of 20 cc. ... ... ... ... 1 ... 1 + - - - - - + - I B. Vesiculosus ... Group I, 4.
2 tubes of 10 cc. ... ... ... ... 2 ... 2 + + - - - - + - IV B. Coscoroba
...
„ II, nil.
3 ,, 5 cc. ... ... ... ... 3 ... 3 + + - - - - + - IV
Do.
...
„ III, nil.
3 „
1 cc. ... ... ... ... 3 ... 4 + + - - - - + - IV
Do.
...
„ IV, 6.
3
.1 cc. ... ... ... ... ...
3 5 + + - - - -+ - IV
Do.
3 ,, .01 CC. ... ... ... ... ... 3
6 + + - - - - + - IV
Do
,
7 +- - - - - + - I B. Vesiculosus.
Fœcal bacilli in 1 cc. and upwards.
8 + + - - - - + - IV B. Coscoroba
... Class I, nil.
9 +- - - - - + - I B. Vesiculosus ...
„ II, 6.
No vibrios in 100 cc.
10 + - - - - - + - I
Do.
... I„ III, 4.
SAMPLE II.—FIRST TAP AFTER FILTER BEDS.
1 +
- - - - + - I
B. Vesiculosus ... Group I, 10.
' Silt
2 +- - - - - + - I
Do.
... „ II, nil.
Total colonies per cc. on agar at 37° C.—790.
3+ - - - - - + - I
Do.
... „ III, nil.
4+ - - - - - + - I
Do.
..
,, IV, nil.
Bile salt lactose, medium.
+
- 5 + - - - - - + - I
Do.
6+ - - - - - + - I
Do.
7+ - - - - - + - I
Do.
8 +- - - - - + - I
Do.
... Class I, nil.
1 tube of 20 cc. ... ... ... ... 1 ... 9+ - - - - - + - I
Do.
...
„ II, nil..
2 tubes of 10 cc. ... ... ... ... 2 ... 10+ - - - - - + - I
Do.
...
„ III, 10.
3
,,
5 cc....... ... 3 ...
3 „
1 cc.
... ... ... 3 ...
3 „
.1 cc. ... ... ... ... ... 3
3 „ .01 cc. .., ... ... ... ...
3
Fœcal bacilli in 1 cc. and upwards.
No vibrios in 100 cc.
SAMPLE III.—TAP IN SAIDAPET.
1 +
- -
- - - + - I B. Vesiculosus ... Group
I, 10
2 + - - - - - + - I
Do.
...
,, II, nil.
Total colonies per cc. on agar at 37° C.—Countless.
3 + - - - - - + - I
Do.
...
,, III, nil,
4 + - - - - - + - I
Do. ...
, , I V , n i l .
Bile salt lactose, medium.
+
-
5 + - - - - - - - I B. Mutabilis.
...
6 + - - - - - + - I B. Vesiculosus. ...
7 + - - - - - - - I B. Mutabilis.
8 + - - - - - - - I
Do.
... Class
I, nil.
1 tube of 20 cc.
...
......
1 ...9 + - - - - - - - I
Do. ...
, , I I , n i l
...
2 tubes of 10 cc.
... ... ...
2 ...10+ - - - - - + - I B. Vesiculosus. ...
,,
III, 10.
3 „
5, cc.
...
... ...
3 ...
3 ,, 1 cc. ...
...
...... 3
...
3 „
.1 cc...
...
... ... ...
3
3 „ .01 cc. ...
...
... ... ...
3
Fœcal bacilli in 1 cc. and upwards.
No vibrios in 100 cc.
SAMPLE IV.—TAP NEAR CANTONMENT RAILWAY STATION
COMPOUND.
1 +
- -
- - - +
- I B. Vesiculosus .... Group I, 10
Group
I, 10
,,
II, nil.
,,
III, nil,
,,
IV, nil.
Class
I, nil.
,,
II, nil
,,
III, 10.
Total colonies per cc. on agar at 37° C.—680.
2 +- - - - - + - I
Do.
... ,,
II, nil.
3 +- - - - - + - I
Do.
... ,,
III, nil,
Bile salt lactose, medium.
+
is
- 4 + - - - - - + - I
Do.
...
,, IV, nil.
5 +- - - - - +- I
Do. ...
6 +- - - - - +- I
Do. ...
1 tube of 20 cc. ... ... ... ...
1... 7 + -- - - - + - I
Do. ...
2 tubes of 10 cc.
... ... ...
2 ... 8 +- - - - - + - I
Do.
... Class
I, nil.
3
. ...
,, 5cc. ...
... ... ... 3
... 9 + - - - - - + - I
Do. ...
, , II, ni l
3 „
1 cc. ... ... ... ...
3 ... 10 + - - - - - + - I
Do. ...
,,
III, 10.
3 „
.1 CC. ..
...
... ... ...
3
,, .01 cc. ...
...
... ... ...
3
Fœcal bacilli in 1 cc, and upwards.
No vibrios in 100 cc.