92 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Fisheries, since 1914, that highly-polluted mussels can be 

 cleansed. Provision for such cleansing process ought, then, 

 to go along with any order made under the Kegulations. By 

 itself an order is merely a restriction leading to a legal offence — 

 if it is enforced. If it is to be enforced then it is fair to the 

 fishermen to insist that the evidence on which the order is to 

 be made should have the same weight as that which would be 

 submitted to a magistrate against a delinquent who is to be 

 prosecuted under the order. 



Other Investigations in Progress. 



Hydrographic Research. 



The Liverpool Laboratory has now arranged for the 

 monthly collection of sea-water samples and the observation 

 of sea-temperatures in the Irish Sea. This is part of the scheme 

 of " directed research " submitted by the Ministry of Agricul- 

 ture and Fisheries. Three cross- channel steamship routes will 

 be sampled : Fishguard to Rosslare ; Holyhead to Dublin, 

 and Liverpool to Isle of Man. It is expected that the work 

 will begin in May. 



The Life-history of the Cod. 



This is also part of the scheme of directed research. 

 Investigations have been going on since October. There are 

 two main cod fisheries which go on during the winter and 

 spring — off the Cumberland coast and round Isle of Man ; the 

 fish, of course, occurs nearly everywhere, but these are the main 

 fisheries. The Whitehaven fishery this year was poor, but the 

 Manx one was very good though the difficulties of transport 

 were so formidable that the season has been an unprofitable 

 one. The fishery, during the spring, both at Whitehaven and 

 at Isle of Man is one for cod that come inshore in order to 

 spawn, and by Easter the Manx fish had nearly all spawned. 

 A very good series of measurements has been obtained by 



