53
SAMPLE V.—TOPE WELL.
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 n l 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 .
Indol. M o b i l i t y . G r o u p .
Bacillus.
Grcup and
Remarks.
(a ) Total colonies per cc. on agar at 37°—660.
( b) Bile salt lactose, medium.
+
-
1 + + _
-
-
-
+
- -
IV B. 112
..
.. Group I, 3.
1 tube 20 cc. of water taken
..
1
..
2 + - - - -
-
+ - I B. Vesiculosus
..
„ II, nil
2 tubes 10 cc.
" ..
2
..
3 + + - - -
-
+ - IV B. Coscoroba
..
„ III, 2.
3 ,, 5 cc. " ••
2
1
4 + - - +
-
- + -
I B. Acidi Lactici
" IV, 5.
3 „ 1 cc.
" ..
2
1
5 + + - -
-
+ - - IV B. 112
..
• •
3 „ •1 cc.
,,
..
1
2
6 + - - + -
-
+ - I. B. Acidi Lactici ..
3 „ •01 cc.
" ..
..
3
7 + + - +
-
+ - - IV B. Lactis ærogenes .. Class I, nil.
8 + + + +
-
+ + - III B. 76 ..
..
.. . II, 5.
"
9 + + - +
-
-
-
- IV B. Gasoformans , .
" I I I , 1 .
(c ) Fœcal bacilli in 1 cc. and upwards.
10 + + +
+
- +
-
- III B. 67 ..
..
Undetermined, 4.
S A M P L E V I . — T A N K .
(a ) Total colonies per cc. on agar at 37°—170.
1
+
+ -
- - -
+ - IV B. Coscoroba
Group 1, 3.
2 + +
- - - -
+
-
IV
Do.
..
. •
" I I ,
n i l .
, .
3 + - - - - - + -
I B. Vesiculosus
" I I I , 2 .
(b ) Bile salt lactose, medium.
+
-
4 +
-
- - - - + - I
Do:
• • " IV, 5.
5 + + - - - - + - IV B. Coscoroba
6 + + - + - + - - IV B. Lactis ærogenes ..
1 tube 20 cc. of water taken
•
1
. .
7 + +
-
+
-
+
- -
IV
Do.
. Class I, n i l .
2 tubes 10 cc.
"
2
. .
8 + + + +
-
- - - III B. Pneumoniæ
" II, 7.
3 ,", 5 cc.
"..
3
•.:
9 + + + + - - - - III
Do.
• . „" III, 3.
3
. .
1 0 +
- -
- - + - I B. Vesiculosus
..
3 " 1 cc. " ..
3 „ •1 cc.
,,
..
3
. .
3 " •01 cc. " ••
••
3
(c) Fœcal bacilli in •1 cc and upwards.
•
REPORT
Of the six sources of water-supply in this jail only one has any pretensions to be considered satisfactory.
The water of Well No. 1 with lactose fermenters in 5 cc. and a total count of 350 germs to the cc. can be
described as a fair water although there are too many varieties among the fœcal organisms. The latter,
however, are all of the more resistant kinds, and do not indicate recent pollution. The samples drawn from
Wells Nos. II and IV and from the tank show about equally bad results. They all contain lactose ferment-
ers in one-tenth of a cc. and a considerable admixture of varieties. Although none of these varieties are
known to be of the most objectionable class, the samples from the two wells show a large percentage of
germs whose resistance to natural purifying agencies has not been determined and it is quite possible that
some may belong to the sensitive class, and therefore indicate recent pollution. In this sense as also in the
total count the water from the tank is better than the other two. The waters from Well No. III and from.
the Tope Well are also quite similar and from the bacteriological. point of view could hardly be worse.
Although the lactose fermenters are fewer than in the last three samples considered, they present an
astonishing variety, and in the case of Well No. III the susceptible Class I is present. The Tope Well
shows no less than 8 .different species out of 10 examined, and as 4 of these are unknown, it is quite
likely that there may be some susceptible germs among them. There is therefore strong ground for
suspecting extensive and recent pollution.
Chemically the samples from the 4 numbered wells show very fairly comparable results, the only
point worthy of notice being the high figure for oxidised nitrogen. Otherwise these waters would pass
muster. The water of the tank is better and that from the Tope Well worse. This last with a high figure
for albuminoid ammonia and a high ratio between it and the absorbed oxygen pointing to contamination
with animal matter cannot be considered at all good. This water is not suitable for a drinking water-
supply.
14