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about 7y 4 inches against G 1 /^ in 1393. This may to some degree be owing to the 

 different way in which the investigations have been carried on, perhaps also 

 to a slower growth of the fish hi 1893 on account of the particularly severe ice- 

 winter — or perhaps to quite other circumstances. — My more imme- 

 diate aim, however, is here only to prove that such groups of fish of the 

 same size are actually found in the sea; not till systematical investigations 

 are untertaken at the same places through a longer series of years will it 

 be possible more closely to discuss that sort of questions. — 



In table V will be seen a number of fish from the Limfjord, caught 

 by fishermen in the days of 12th — 19th July 93, at about the same time, 

 consequently, as those in table IV; they are caught with eel-handseines, a 

 fishing-gear which catches the little plaice almost as well as my plaice-seine 

 with small meshes, and the large ones too. — Column 6 in table V shows 

 the result of 8 such draughts with a distinct 1 -group and a distinct 2-group, 

 and the point where they meet is c. 3 / 4 inch higher than in table IV, pro- 

 bably because the »race« of the plaice is larger in the Limfjord than in 

 the Cattegat. In spring 1893 I marked 1000 specimens of this 2-group in 

 the Limfjord, 7 — 10 inches long, and so proved their quick growth; they 

 were 13 — 14 inches long in October — November this autumn : see the double 

 column 9 table V (also column 3 & 4*). Consequently there are also in 

 the Limfjord a 1-group and a 2-group which are almost identical with these 

 groups in the Cattegat. 



The English investigators M'Intosh, Fulton, and Cunningham have 

 often pointed out that the fish do not grow equally quick, and that we 

 cannot, therefore, say in all cases how old this or that specimen is. I here 

 quite agree with them ; it is proved by the near connection between the 

 groups. But it is another question whether this will be of any great mo- 

 ment with respect to the average growth of the fish. Even if every fish 

 was marked with its age, we would not content ourselves with this, but 

 as they do not grow equally quickly, we would try to find out how great 

 the average growth is, and it seems to me that I have just done so in point- 

 ing out the various groups — 1 — 2 etc.; for each of these is pretty nearly 



*) Note: Perhaps there is no 0-group in the Limf jord. I have not been fishing there 

 myself, but the fishermen assert, that the little fish immigrate in great numbers 

 from the German Sea, and I am inclined to think that they are right. Ripe fish 

 seem also to be missing in the fjord, or are found but very exceptionally. Nor 

 are there any eggs to be found, to judge from one single investigation which was 

 undertaken by Mr. Teilmann-Friis at a time when the Lesser Belt was teeming 

 with eggs of plaice. 



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