COUNCIL - SEPT. 1910 - APPEND. D — 54 — 



that we can already guarantee a very full report on the plaice questions. Although 

 material is still wanting, yet sometime or another we must make an end and 

 in his opinion what does not come to hand before the 1st of Jan. 1911 should 

 not be taken into account. In this way we can make sure of having the report 

 finished next year. The material still wanting is in three directions: 



1) marking experiments: a great deal of material not yet published 

 for the latest years, from England, Scotland, Denmark, Holland. This 

 material is necessary for one important thing, to determine the fishing- 

 coefficient with regard to the North Sea plaice. 



2) age determinations from otolith observations. England has 

 much unpublished material on the plaice, which it is of importance 

 to have. 



3) Plaice-measurements from cm. to cm. These wanting for Scotland. 



The material desired but not yet to hand is essential for the discussion 

 of the question of a possible size-limit. 



Dr. HoEK then gave a brief account of the work on which he had to report, 

 namely, the eggs, larvae and young stages of the gadoids. In his opinion 

 he could not draw up a report for a 3rd year, as there was no material. 

 In a communication to the Bureau he had made suggestions for a new 

 scheme of work, namely, the investigation of the races of the principal 

 food-fishes of the North Sea, e. g. the cod, haddock and plaice. A second 

 suggestion he had to bring forward might be discussed later, meantime he 

 would be glad to hear the opinion of the members on this first point. 



After discussion by Hjort, Heingke and Redeke of the possibility of 

 drawing up a report on the subject, how the material could be obtained 

 and of the limitations of the subject, it was agreed that a general summary 

 of the available literature would form a suitable basis for more definite 

 recommendations next year on the collection of further material! 



