COUNCIL — APRIL 1912 - APPENDIX D — 70 — 



Dr. Johansen gave a communication about the contents of his third report 

 concerning the Pleuronectidse in the Baltic Region, especially drawing attention 

 to the recent investigations with regard to the growth and migrations of the plaice 

 m the Belt Sea. He mentioned moreover, that there seems to be a peculiar 

 similarity between the migrations of the plaice and the migrations of the cod in 

 the Danish waters. In seas where the salinity varies strongly within small distances 

 — as in the Belt Sea — the plaice and the cod which are indigenous there, under- 

 take only short migrations. In seas where there are much greater water-volumes 

 of a fairly uniform salinity than in the Belt Sea, e. g. in the North Sea, the 

 Skagerak, and northern Kattegat, and in the true Baltic, the plaice and the cod 

 undertake much more extensive migrations. As far as we are able to judge at 

 present, it looks as if also the [flounder in the true Baltic undertakes more 

 extensive migrations than in the Belt Sea and the southern Kattegat. Dr. Johansen 

 showed a chart illustrating the Danish marking experiments with cod in 1905 — 

 1907 and compared this with several charts showing marking experiments with 

 the plaice. 



In the discussion of Dr. Johansen's report Dr. Fulton and Prof. Heincke took part. 

 Dr. Hoek laid before the meeting his report on "Les Clupéides (le Hareng 

 excepté) et leurs migrations". 



(Agenda d). 



Dr. Hjort suggested that an attempt be made to organize an international 

 weekly exchange of telegrams regarding catches of fish intended for preparation by 

 curing at the place of capture. He was of opinion that such informations would 

 be greatly to the advantage of the fishermen. 



Dr. Trybom and Mr. Jones expressed their agreement with the proposition. 



Comm. Dreghsel also considered the idea a good one, but was of opinion 

 that it might possibly be a matter of considerable difficulty to carry it out. He 

 suggested that a comittee be formed to further consider the question. 



Mr. Archer hoped that it would be possible to overcome the difficulties 

 in carrying out the idea which undoubtedly would appear. There might for in- 

 stance arise a question as to which countries should take part in such weekly 

 exchange. 



Prof. Henking also proposed that the matter be submitted to the conside- 

 ration of a Committee. As far as Germany was concerned, it did not appear that 

 the plan would be easy of execution. 



