FISHES. . 523 



i 



2. Hagg Lax, which come up in May, when the "hagg/ J 

 or bird cherry, blossoms, and these are the largest of all, 

 sometimes weighing 50 lb., rarely 55 Ib. 



3. Borting, or saxorling, do not begin to ascend the 

 streams to Lilla Edet, Falkenberg (in the south), etc., till 

 after the 20th May, when the migration of the large salmon 

 is over ; and the migration of these "borting" continues more 

 or less until October. The ' ' borting " are smaller than the 

 common salmon, and have thinner scales, which easily 

 peel off. 



After the spawning season is over, the salmon return 

 to the sea, where they remain all the winter spread about, 

 and apparently making long migrations. In one of the 

 rivers of Norrland, a salmon was taken in the spring in 

 which was found a certain kind of hook, which at that time 

 was only used on the coasts of Pomerania. 



Some naturalists have supposed that the crook in the 

 under jaw of the male salmon during the spawning season 

 has been provided by nature to moderate the effects of 

 the severe battles which take place at this time between the 

 male fish, certainly not to assist them in the operation 

 of spawning. The largest salmon noticed by Nilsson was 

 a male taken in the sea off the coast of Calmar, in Novem- 

 ber, it was 4 ft. 2^- in. long, and 114- in. high. 



The general spawning season of the sea salmon here 

 appears to be throughout the month of November. 



90. SALMO EEIOX, L. Gra Lax. The Bull Trout. D. 



Does not appear to be so common on any of the Scan- 

 dinavian coasts as the salmon. According to Malmgren 

 (who has lately published a list of the fish found in Finland, 

 and which contains some interesting remarks on the great 

 lake trouts of Scandinavia to which I shall hereafter refer) 

 this bull, trout is nothing more than a form of the S. trutta } 

 L., or salmon trout, which latter fish, however, he allows to 

 be a good and distinct species. In his description of 8. 

 trutta, L., he gives as synonymes : S. trutta, L. ; S. eriox, 

 S. oda, and 8. trutta, Nilss. ; the salmon trout, Yarr. ; 



