672 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



" The authorities in the different parts of the country may permit 

 exceptions as to the use of spears and guns or pistols. 



" Fishing with hooks and lines is allowed. 



" It is forbidden to drain any water-courses dry for the purpose of fish- 

 ing. 



"The governments which adopt this treaty will see to it that the 

 so-called automatic traps connected with mills and other water-works 

 are as much as possible removed. 



" The placing of new traps of this kind is forbidden. 



" Article 5. The following kinds of fish must neither be offered for 

 sale nor sold, if, from the eye to the commencement of the anal fin, 

 they have not at least the following length : Salmon, (Trutta salar Lin.,) 

 35 centimeters; lake-trout, (Trutta lacustris Agass.,) 20 centimeters; 

 brook-trout, (Trutta fario Lin.,) grayling (Thymallus vulgaris Nilss.,) 

 Eotheli, (Salmo salvelinus), 15 centimeters. The authorities of the two 

 countries may, for these measures, substitute the corresponding weights. 



" If fish are caught which have not this weight or measure, they must 

 immediately be thrown back into the water. 



"Article 6. In order to increase the number of salmon, fishing 

 is every year entirely suspended in the Ehine and its tributaries, from 

 Basle upward, from the 15th October till the 1st January. 



" In the time from the 1st September till the 1st January, it is for- 

 bidden to offer for sale, to sell, or to transport Khine salmon which are 

 capable of spawning. 



" During the seasons of protection, the respective authorities may 

 allow the taking of salmon to be used in piscicultural establishments 

 for impregnating eggs. These fish, after they have been used for this 

 purpose, may, under the proper supervision of the authorities, be offered 

 for sale, sold, or transported. 



" Article 7. From the 20th October till the 20th January, it is for- 

 bidden to fish, offer for sale, or to sell lake-trout, salmon-trout, and brook- 

 trout. If, during this period fish of these kinds are caught accidentally, 

 they are to be thrown back into the water immediately. 



" The respective authorities may permit the taking of these kinds of 

 fish, during the seasons of protection, for piscicultural purposes, and also 

 the offering for sale and the sale of lake-trout after these have been 

 used for impregnation, under proper supervision. 



"Article 8. From the 15th April till the end of May, the catching of 

 any kind of fish — except salmon and lake-trout — with nets and bow-nets 

 of any kind, is prohibited. 



"Article 9. The taking of fish for artificial culture, and the catching 

 of small fry to serve as food for the fish in the piscicultural establish- 

 ments, may, by the respective authorities, be permitted even during 

 the season of protection mentioned in article 8. 



"Article 10. It is prohibited to throw refuse from factories or other 



