THOMPSON YATES LABORATORIES REPORT 
TABLE III 
Numbers of B. Coli Commune present in Sewage and other Highly Polluted Waters 
Description 
Date drawn 
Analyzed 
Dilution used 
B. coli 
commune 
West Derbv Crude Sewage ... 
I CJ- I O-QQ 
7 7 7 
2I-IO-99 
'01 
52,000 
2 6- 1 O-QQ 
77 
2 7- I O-QQ 
"OO c 
27 /L70 
Manchester Roscoe Beds, 
Effluent ... 
5-12-99 
6-I2-99 
•OI 
3>9°° 
„ Final Contact 
Bed Effluent ... 
Mean of 3 analyses 
in Dec, 99, and 
•OI 
590 
„ Crude Sewage ... 
- 
in Dec., 99 
'OI 
5,000 
,, Cameron Tank 
Liquor 
» 4 »? 
Dec. qq 
'01 
2, 1 00 
„ Open Septic Tank 
Liquor ... 
,, Dec, 99 
•01 
2, 1 30 
Leeds Crude Sewage 
Mean of 6 analyses 
in Dec, 99, and 
•01 
19,700 
Jan., 00 
Cameron Tank Liquor 
in Dec, 99, and 
•01 
6 500 
Jan., 00 
,, Septic Tank Liquor 
(No. I Tank) 
8 „ 
in Dec, 99, and 
•01 
060 
4, 0 
Jan., 00 
„ Septic Tank Liquor 
(No. 2 Tank) 
8 
in Dec, 99? iinci 
'01 
4>3°° 
Jan., 00 
West Derby Sand Bed 
Effluent 
Mean of 5 analyses 
■01 
9,300 
Dibdin Bed 
Effluent 
„ 19 » 
•01 
1 0,000 
Above Dibdin Effluent, after 
subsequent filtration through 
small experimental filters. 
No. I Sand Filter ... 
Undiluted 
240 
No. 2 Earth Filter ... 
:: Is :; 
Undiluted 
90 
Land Effluents from West 
From 7 different 
drains 
Undiluted 
5o 
Derby Sewage Farm 
22-1-00 
Mean from 3 
different beds 
These samples 
were plated the 
same day as they 
were drawn. 
Weather very cold, 
sewage, etc., smel- 
ling strongly of tar. 
Samples came 
by post and 
were plated a 
day after they 
were drawn. 
HIGHLY POLLUTED RIVERS, Etc. 
Manchester Ship Canal — 
Above sewer outfall 
5-12 
-99 
6-12-99 
•01 
6,100 
At sewer outfall 
•01 
3,650 
Below sewer outfall 
•01 
3,800 
River Alt 
22-1 
-00 
22-1-00 
•01 
277 
1 River was in 
(flood. Mean of 5 
River Severn at Shrewsbury... 
1 1 - 1 
-00 
1 2-1-00 
•1 
55 
fdets. at different 
J places in the town. 
\ Mean of 8 dets. 
14-3 
-00 
1 5-3-00 
■ 1 
190 
>at different places 
) in the town. 
180 
\ Mean of 6 dets. 
30-3 
-00 
31-3-00 
> at different places 
1 in the town. 
