162
Table showing the quantity of pollution in each sample.
Name of Town supply.
UNFILTERED OR NATURAL
WATERS.
FILTERED WATERS.
WATER TAKEN FROM PIPES.
T o t a
l c o l o n i e s
p e r c.c.
on agar
at 37° c.
Lactose fer
menters in
Gl uc os e f e r me nt e r s i n
T r u e c o l i c o m .
Total
colonies
per C.C.
on agar
at 37° c.
Lactose fer
menters in
Gl uc os e f e r me nt e r s i n
T r u e c o l i c o m .
T o t a
l col oni es
per c.c.
on agar
at 37° c .
Lactose fer
menters in
G l u c o s e f e r m e n - t e r s i n
T r u e c o l i c o m .
2 0 c c .
1 0 c c .
5 c c .
1 c c .
· 1 c c .
·01 cc.
2 0 c c . 1 0 c c .
5 c c .
1 c c .
· 1 c c . · 0 1 c c .
2 0 c c .
1 0 c c .
5 c c .
1 c c .
· 1 c c .
· 0 1 c c .
G r o u p A — R i v e r w a t e r s .
Cocanada
Canal
..Stored
. .
3,150
+ + + + + + .01 -
1,680
+ +
++
+ - - ·1 —
740 + + + + - - · 1 —
280
+ + + + - -
· 1 -
t +
+
+ – – – ·1 –
1,520 + + - - - - ·1 -
4,410 + + + - - - .1 -
9 , 7 1 0 + + + - - - 1
–
Conjeeveram ..
9 , 6 8 0
+ + - - - - 1 -
Gudiyáttam
. .
890
+ +
+
+ - - 1 -
1,260 + + + + - - 1
–
630
+ + + + + + .1 -
1,890 + + + + - - 1 -
1,890 + + + + + + .01 -
6,300
+ + + + - - .1 -
210 + + + - - - .01 -
Kurnool
..
..
6,930 + + + + - - . 0 1 -
3,780
+ + - - - - 1
–
150 + + + + - -
· 0 1 -
5 , 0 4 0 + + + - - - 1 -
960 + + + - - - 1 -
1,760
+
±
+ - - - 1 -
1,920 + + + + - - 01 -
Madura
..
.. +
2,240
+ + + - - - 1
–
Countless. + + + + + + . 0 1 -
6,930
+ + + + - - . 0 1 -
1,890
+ - - - - - 1
–
Nellore
..
. .
8 8 0 + + + + -
- · 1 –
1,260 + + + + + - .01 -
1,880
+ + + - - - 5 -
280 + + + - - - 1
–
Tanjore
..
..
310
+ + +
- - - ·01 -
1,890
+ + + + + + . 0 1 -
320 + + + - - - .1 -
120 + + + - - - .1 -
Trichinopoly . .
210 + + + + - - .01–
1,960
+ + + + + - · 0 1 ±
‡. + +
++ + - - .01 + 8,190 + + + + + - .01+ +
Tirupati
..
. .
6,300
+ + + - - - ·1 -
Countless. + + + + + - .01-
3,233
+ + + - - - 1
1 / 1 9
Average ..
3,345
+ + +
+
+ - ·01 1 / 1 3
2,346 + + + + - - ·1 1 / 1 0
G r o u p B — I m p o u n d e d s u r f a c e w a t e r s .
Adóni ..
..
6,930
+ + + - - - .01 -
6,300 + + + + - - ·1 -
6,300 + + + - - - .1 -
3,780 + + + - - - · 0 1 -
Coonoor
..
..
158 + + + + - - .1-
40 + + + - - - .1 -
‡ + + + - - -+ ·1 -
280 + + + + - - · 1 -
1
‡ + + + + + + ·01 +
1,280 + + + - - - .01 -
M a d r a s
. .
. .
‡
+ + + + - - ·01 +
‡ + + + - - - ·01 –
‡
+ + + + - - .1 -
‡ - - - - - --.. –
Ootacamund ..
..
378
+ + - -
- - 1 -
80
+
+ - - - - 1 -
220
+ - - - - - 5 -
310 + + - - - - · 1 -
104 +
+
+ - - -- .01 –
4,310 + + + + + - .01 +I
I
–
–
‡ + + + + - - 1
-
–
43
+ + + - - - - .1 -
Vellore . .
. .
Countless + +
+
+ - - 1
3,780
+ + + + + + .01 -
2,520
+ + + + - - 1
‡ + + + + + - . 1 -
5,670
+ + + + - -
. 0 1 -
3,780
+ + + - - - ·1 -
2,520 + + + - - - · 1 -
Vizagapatam
. .
‡ + + + - - - - · 1 --
1,890
+ + + - - - · 1 -
2,673
+
+ + -
- - 1 -
Average ..
2,300
+ + + + - - ·01 3 / 1 3
4,410 + + + - - - .1 –
G r o u p C . — W e l l s p r i n g w a t e r .
Adóni (spring) ..
9,190 + + + +
+ -
‡ -
3,150 + + + + + + 01 -
87
+ + + - - - 1 -
Cuddapah ..
..
320
+ + + + - - .1 -
290 + + + + - - .1 -
5,120 + + + + + + 01 -
8 9 + + + + + - ·01 -
Dindigul ..
..
120 +
+ + - - - 5 –
5,670 + + + - - - ·01 -
6,300 + + + - - -
. 1 +
7,560 + + + + - - .1 -
Guntúr
.. ..
3 , 7 8 0
+ + + + - - · 1 -
+
Average ..
5,050 + + + + - - .1 - 4,857 + + + + –
- .01 1 / 3
1,993
+
+ + - -
· 1 -
*T
h e s e w a t e r s a r e w e l l w a t e r s i n t h e b e d o f a r i v e r .
† F o r t h e p u r p o s e s o f a v e r a g e s " c o u n t l e s s " i s t a k e n t o b e 1 0 , 0 0 0 .
‡ S i g n i f i e s " n o t d e t e r m i n e d . "
The various quantities of the sample that showed the presence of fœcal bacilli are marked +; those
from which these organisms were absent, are marked—.