SEA-FISHERTIES 
LABORATORY. 
221 
Conway PURIFICATION EXPERIMENT: MUSSELS BEFORE RELAYING 
oN Morra Beach: NuMBERS or “ CoLON-LIKE”’ BACTERIA 
PRESENT PER O'l c.c. OF STOMACH JUICES. 
Mussel. 
2 
3 
SampLreE. | 4 
ao 
From near | 6 
Conway | a 
Bridges 8 
| 9 
Lo 1O) 
11 
12 
ils 
i ald! 
SAMPLE II 15 
+ 16 
From near | 17 
Deganwy 18 
Sewer 19 
Outiall | 20 
SAMPLE III / 21 
Krom 22 
between ~ 23 
Deganwy | 24 
and Perch 25 
No. of Red Colonies. 
No. of White Colonies. 
Numerous and fused 
About 300 
About 400 
About 200 
128 
Numerous and fused 
Numerous and fused 
35 
150 
About 300 
pil 
300 
About 400 
200 
108 
Numerous and fused 
250 
240 
+300 
Numerous and fused 
41.950 
124 
150 
300 
36 
| No white colonies 
on any plate 
No white colonies 
on any plate 
Judging from my experience of previuus auatyses of 
mussels from the Conway Hstuary, I should say these 
shell-fish were polluted to a remarkable degree. 
The samples referred to above were relaid on Morfa 
