A STUDY ON TROUT AND YOUNG SALMON. 275 



hood of the coast, and enters upon a pelagic life in the open 

 ocean. 



I must consider this as a peculiar lawbound passage of its 

 lifehistory. 



This fact I now consider so well founded by the investi- 

 gations described above, that I desist from all further comment. 



On the strength of this fact I will not claim, that young sal- 

 mon of the abovementioned sizes cannot be found in our waters, 

 but it is evident, that such finds would only be exceptional. 



For all practical purposes my result may thus be expressed 

 in the sentence, that salmon between ca. 16 and ca. 45 cms. 

 length or salmon between the smolt stage and the grilse stage 

 do not occur in those of our waters where salmonfishing is 

 carried on. 



In this connection I wish to propose a single reservation 

 which, however, does not impair the correctness of the above- 

 mentioned results. 



My investigations have not, in any considerable degree, been 

 extended to Finmarken, and I do not feel certain that my results 

 correctly express the conditions peculiar to the fiords of this vast 

 portion of our country. Some of these fiords have indeed more 

 the character of open bays of the ocean than of fiords, and 

 may possibly, on account of their more oceanic character, be 

 the habitat of young salmon. 



Also I do not feel certain that young salmon, somewhat 

 smaller than the smallest grilse generally caught by the fisher- 

 men may not be caught in a few places on our coast near the 

 open ocean. 



I mean however, that this latter phenomenon, if occurring, 

 must be regarded as a casual and sporadic visit paid by these 

 sizes of salmon, which undoubtedly belong to the open ocean 

 and lead a pelagic existence there. 



The abovementioned results are obviously in no small degree 

 important to the solution of practical problems relating to our 



