274 KNUT DAHL. 



German herring-fishers inform me, that young quite small 

 salmon during antumn often are caught in their driftnets in the 

 North Sea. 



h. Summary of the results of the investigations. 



The investigations described in the present chapter have 

 shortly yielded the following results: 



1) That young salmon may be caught in the rivers and river 

 mouths up to a size of 13 — 16 cm.^ 



2) That young salmon of sizes between (13 — 16) cm. and 

 (45 — 50) cm. have been caught by me neither in the rivers 

 nor in the fiords, nor those parts of our seas where gear is 

 employed for the purpose of catching salmon. Neither 

 have they been found by me in the catches made by the 

 fishermen, nor in the fishmarkets of Norway, Great Britain 

 and Denmark. 



3) That young salmon between the emigration stage and the 

 grilse stage (some 40 cms. length) are not at all previously 

 known nor accurately described; that examination of the 

 collections of the majority of Scandinavian museums, only 

 yielded 4 — four — individuals between these sizes, all 

 undescribed. 



4) That young salmon of sizes between the emigration stage 

 and the grilse stage have been caught in small numbers 

 many miles at sea and above large oceanic depths. 

 Young salmon of the abovementioned sizes must evidently 



be considered as very rare specimens of natural history. I 

 therefore consider myself justified in drawing the conclusion that 

 the young salmon after emigrating from the rivers, disappears 

 from the fiords, the belt of islands and the immediate neighbour- 



' My investigations in certain southern rivers have later proved that the 

 smolts in these rivers may occasionally reach ca. 20 cm, in length. 



Auth. Rem. 1904. 



