DISTRIBUTION OF R. COLI COMMUNE 17 
a period of about six months. It will be seen that out of a total of 440 foods 
analyzed B. coli commune was present only in 19 cases; 17 of these referred to 
milk, where its presence could easily be explained by contamination occurring in the 
cowsheds. The remaining two cases were those of mussels, very possibly procured 
from an estuary, where pollution by sewage is a common occurrence. 
TABLE IV 
Samples of Soil from Moorland 
Sample 
Number 
Date 
Source 
B. coli 
I 
2 
Jan. 27th 
Biyn Gwyn Hill 
Absent 
in 
.02 
gram. 
3 
4 
5 
6 
\ Fawnog, at back of Tyn-y-Garry, j 
j N.E. Side of Lake | 
» 
§ 
Feb. 6th 
S. side of Hirddu River 
W*. side of Eunant River 
Absent 
in 
.1 
gram. 
9 
„ „ 
S. side of Iddew River ... 
10 
N.E. side of Nadroedd River 
1 1 
N.E. side of Garneddwen Stream... 
Absent 
in 
gram. 
1 2 
March 1 7th 
W. side of Cedig River... 
From that portion of the Rivington 
watershed which drains into 
the Yarrow, or 2nd Rivington 
Reservoir 
13 
1. A small watercourse running 
through flat boggy ground ... 
Absent 
in 
. 1 
gram. 
'4 
2. From steep bank of stream 
which falls rapidly over a 
rocky course near the boundary 
of the watershed ... 
Absent 
in 
.1 
gram. 
15 
3. From the top slope of Riving- 
ton Pike, a steep bank of 
exposed soil which drains into 
River Douglas 
Absent 
in 
.1 
gram. 
c 
