304 KNUT DAHL. 



be considered important enough to demand special regulations, 

 a minimum size of 13 — 16 cm. however would include all the 

 sizes demanding protection. 



As we now have seen, it transpires, that^all the regula- 

 tions, by means of which the authorities have intended to 

 protect the young of the salmon, such as protection or closing of 

 river mouths enforced liberation of salmon and trout caught 

 under certain circumstances, prohibition aganst the sale of under- 

 sized salmon, prohibition against the capturing of the young 

 etc. may without the slightest injury to the interests of the sal- 

 mon fisheries he reduced to a prohibition against the killing 

 of salmon fry, parr and smolts. This prohibition covers all 

 the sizes of salmon which in our waters, may justly demand 

 the protection of law. As the size of these young salmon, only 

 in exceedingly rare cases exceeds a length of 13 cm. any coUi- 

 sion with the interests of the trout fisheries is excluded. 



Even if we proceed to relax in a considerable degree the 

 present exacting regulation for trout-fishing, these relaxations 

 cannot in the interests of trout fishing be extended beyond 

 endeavouring to afford some protection to trout fry. As all 

 stages of trout occur in our waters the term „fry" or „young" 

 will however, as regards this species, be insufficient. 



Evidently in respect to this species there must be fixed a 

 size limit at which the protection of the young must commence. 

 Later on, I will return in detail to this question ; but even at 

 the present moment it is clear, that this limit in the interest 

 of trout fishing must in reason be fixed at a figure protecting 

 the maximum length of salmon fry or emigrating young salmon. 

 Then clearly a prohibition against the killing of salmon fry 

 (parr and smolts) does not offer any chance of evasion and 

 thus sufficiently protects the interests of salmon. 



Thus as no chances of collision are present between the 

 interests of salmon and trout fisheries in this respect, separate 



