24 
THOMPSON YATES LABORATORIES REPORT 
TABLE VI 
Sand Filters at Oswestry 
Number of 
Sample 
Bottle 
Date 
Source 
B. coli commune 
Approx. per grm. 
33 
Jan. 26, 
1900 
Surface of Test Filters (No. 6) ... 
43 
6" Pipe Filters (C) 
Absent. 
44 1 
Taken from three different places 
No. i Large Filter... 
38 
» 
57 
143 ' 
73 
43 
Feb. 10, 
1900 
No. 2 Filter 
Absent in .1 
grm. 
33 
No. 2 Filter (a different place) 
3 
127 
No. 4 Filter 
Absent in .1 
grm. 
1 20 
No. 4 Filter (a different place) 
Absent in . 1 
grm. 
"4 
No. 5 Filter 
2055 
40 
No. 5 Filter (a different place) 
.20 
H3 
No. 7 Filter 
Absent in .1 
grm. 
122 
No. 7 Filter (a different place) 
Absent in . 1 
grm. 
118 
No. 8 Filter 
Absent in . 1 
grm. 
18 
No. 8 Filter (a different place) 
Absent 
