262 SALMON AND SEA TROUT FISHING. 



fish are the Spey, Don, Tay, and Tweed. The peal, 

 or salmon peal, as it is termed, is the grilse stage 

 of these fish, as it is also of the 



SEWIN (S. Cambricus), which species, though 

 chiefly found in Wales, is also abundant in several 

 southern rivers of England. This fish is closely 

 allied to the sea, white, or salmon trout. It has the 

 delicate colouring of the salmon parr, the prevailing 

 hue being a pale slate blue, which graduates from the 

 dull black upon the back to the pure chaste white of 

 the breast, the broad expanse of the side being 

 profusely spotted with black, and occasionally red ; 

 the latter about the lateral line. Sewin, in common 

 with the whole species, are subject to great variety 

 of tint, the action of fresh water causing them, 

 after a protracted stay, to assume somewhat the 

 colour of the ordinary brown trout. Commercially 

 the sewin is not nearly so important a fish as the 

 salmon trout. Its flesh is generally preferred as an 

 article of diet, but it is not so plentiful as its nor- 

 thern relative. The whole migratory body of the 

 salmonidae family flourish infinitely better in the 

 more northern than in temperate regions. The 

 salmon of Norway, and even so far north as Iceland, 

 attain much greater dimensions than the natives of 

 more southern latitudes. The sewin is far less 

 vigorous than other members of the same family, 

 and when its instincts prompt it to ascend the rivers 

 to attain the requisite medium temperature of water 

 and atmosphere to insure the vitality of its eggs, is 

 more easily obstructed in its passage. 



