SEA-FISHERIES LABORATORY. 



367 



4. — Analysis 



of Mussels from 

 Inner Scar. 



Roosebecr 



On 28th November, 1906, Mr. A. Scott sent me a 

 sample of mnssels from Boosebeck Inner Scar, near Piel, 

 Barrow-in-Furness. At the time of collection the scar 

 was being fished by a few men to the extent of about 

 60 bags per month. It is of little importance as a source 

 of supply for the public markets, as it is a small 

 scar and is only occasionally fished. But its position is 

 such as would justify one in stating that the shellfish 

 contained on it are reasonably free from pollution. In 

 these circumstances we thought it might be interesting to 

 make a preliminary analysis. 



Ten mussels were examined in the usual way and 

 with all necessary precautions. The results are as 

 follows : - — 



Results of Primary Cultures on Neutral-Red 

 Agar Plates. 



Colon-like " Colonies. n , 



Colonies. 



20, several patches ... . 



45, several patches ... . 



9 ... . 



9 ... . 



2 ... . 

 24, several patches ... . 



28 ... . 



13 ... . 



3 ... . 

 9 ... . 



Ten of these " colon-like " colonies were then selected 

 and cultivated on ordinary nutrient agar, and then 

 tertiary sub-cultures were made. The results of these 

 latter sub-cultures are : 



Mussel. 



1 . 



2 . 



3 . 



4 . 



5 . 



6 . 



7 . 



8 . 



9 . 

 10 . 



Enteritidis 

 reaction. 



. + 

 + 



+ 

 + 

 + 

 + 

 + 

 No change. 



