16
SAMPLE IX.—OLD OOTY CISTERN.
N u m b e r .
Lactose.
S a c c h a r o s e .
dal ci t e.
A d o n i t e .
I nal i n.
V o g e a n d p r o s k .
I n d o l .
Moti l i ty
Group.
Name of Bacilli.
G r o u p a n d R e m a s k s .
Total colonies per cc. on agar at 37° C.--20.
' Bile salt lactose, medium.
+ -
1 t u b e o f 2 0 c c .
... ...
... ...
1 ...
1 + - - - - -
+ - I
B . V e s i c u l o s u s . . .
G r o u p I , 1 0 .
2 t u b e o f 1 0 c c
.... ...
... ...
1 1
2 + - - - - -
+ - I
D o . . . . " I I , n i l .
3 " 5 c c .
... ...
... ...
. . .
3
3
+ - - - - -
+ - I
D o . . . .
" I I I , n i l l
3 " 1 c c .
... ...
... ...
1 2
4 + - - - - -
+ - I
D o . . . .
" I V , n i l l
3 " 1 c c .
... ...
... ...
. . .
3
5 + - - - - -
- - - -
+ - I
D o . . . .
C l a s s I , n i l
3 " . 0 1 c c .
... ...
... ...
. . .
3
6 + - - - - -
+ - I
D o . . . .
" I I , n i l
F œ c a l b a c i l l i i n 1 0 c c . a n d u p w a r d s .
7 + - - - - -
+ - I
D o . . . .
" I I I , 1 0
8 + - - - - -
+ - I
D o .
. . .
No vibrios in 100 cc.
10 + -- - - - + - I
Do.
9 + - - - - - - - -
-- -- -- --+ + - I
D o .
1 0
+ - - - - - - -
-- -- -- -- + - I
D o .
REPORT.
The results obtained this quarter from samples drawn from the various sources of the Ootacamund supply
are almost all astonishingly good. None can be called bad though those from the Kodappamund water are
very poor by comparison. Throughout we see total counts that can only be styled extraordinarily low
most of the samples show only one or no fœcal germs in 60 cc. The Marlimund pipe line and the old Ooty
cistern are not so good, but would pass muster as very good, but for comparison with the others.
Curiously enough the water from the Kodappamund Reservoir gives the best results on chemical exami.
n a t i o n . A l l t h e o t h e r s t e n d t o g i v e r a t h e r h i g h f i g u r e s f o r o r g a n i c m a t t e r w h i c h a p p e a r s t o b e m a i n l y o f
animal origin. As usual the water of the Marlimund Lake is the worst in this respect.
Chemical Analyses.
SAMPLE I.
SAMPLE II.
Physical appearances.
C o l o u r a n d T r a n s p a r e n c y .
Y e l l o w i s h b u t c l e a r
Slightly yellowish but clear.
Smell
S m e l l
N o n e
None
QUANTITATIVE.
•• •
...
...
• • •
• . •
•
QUALITATIVE.
Nitrites
...
...
...
...
...
...
...
...
Nil.
Nil.
Sulphates ...
...
...
...
...
...
...
Nil.
Nil.
Phosphates ...
..
...
...
...
...
...
...
Nil.
Nil.
Iron, poisonous metals ...
...
...
..,
...
...
...
Nil, nil.
Nil, nil.
,...—— -.A.-
— -A--
SAMPLE IV.
SAMPLE VI.
—, r------
----1
Physical appearances.
Colour and
Transparency.
•
Yellowish but clear.
Yellowish and hazy.
Smell.
None.
None.
QUANTITATIVE.
Total solids ...
...
...
...
...
Parts per 100,000 ...
3'000
3.000
Temporary hardness
..
...
...
Do.
...
Nil.
Nil.
Permanent hardness
...
...
...
Do.
0'500
0'500
Total hardness . ..,
...
...
...
, Do....
0'500
Chlorine
...
...
..,
...
...
Do.
...
0'284
0'284
Ammoniacal nitrogen
...
...
...
Do.
...
0'003
0'002
Albuminoid nitrogen
•••
•.•
•••
Do.
...
0'008
0'014
Oxygen absorbed (Till's Process) ...
...
Do.
...
0'086
0.129
Nitric nitrogen '
...
...
...
Do.
...
Trace.
Trace.
QUALITATIVE.
Nitrites
.•.
•••
•••
..•
•••
...
•••
•••
...
Nil.
Nil.
Sulphates ...
...
...
...
...
...
...
...
...
Nil.
Nit.
Phosphates ...
...
...
...
...
...
...
...
...
• : - ,
Nil.
Nil.
Iron, poisonous metals ..
Nil, nil.
Nil, nil.