A STUDY ON TROUT AND YOUNG SALMON. 335 



degree than hitherto, be directed towards procuring the greatest 

 possible production of fry and young fish principally by natural 

 reproduction, and secondly by hatching and rearing to the extent 

 which occasion really demands. 



As the special object of the above mentioned preliminary 

 investigations would be the collection of material in order to 

 decide whether fixed fishing engines, veirs etc. and seines may 

 be totally abolished or their employment be essentially reduced. 



These sorts of fisheries must indeed at the present time 

 be said to represent preeminently the river interests, as the 

 number of pounds caught is much more important to these 

 fisheries than to sportsmen, and it is just these fisheries which 

 possess the power of putting the greatest obstacles in the way of 

 ascending salmon. Quite another view would presumably apply 

 to the much less destructive sport fishing. 



The question, of the way in which the total measure might 

 most practically be effected, and of the means by which the 

 economic part of the matter might be arranged by the state, is 

 not within the scope of my present commission. 



It is, however, not impossible that the matter might be 

 arranged even with relatively small pecuniary efforts, and I 

 should strongly recommend our administration to undertake the 

 collection of the material necessary for an accurate estimate of the 

 scope and nature (besides also the economic part) of the measures 

 which eventually would have to be taken. 



g. Recapitulation. 

 According to what I have stated in this paper I would 

 draw special attention to the following measures: 



1) Protection of the young salmon and trout effected by a 

 prohibition against the sale of trout under 15 cm. in length 

 and a prohibition against wilfully killing salmon and trout 

 smaller than 15 cm. in length in rivers where both species 

 occur. 



