178 FISH CULTURE. 



and elsewliere, also called the Schelly of Uls- 

 ■water. 



Of all these fish, probably the Powan is the most 

 valuable, since it grows to a fine size, from twelve to 

 sixteen inches in length. It is called the fresh-water 

 herring, and is by some authorities stated to be 

 excellent food, though I have heard others deny 

 that it is so. It is abundant in Loch Lomond, and 

 is taken in nets there in large numbers. Although 

 it dies very soon after its removal from the water, 

 arid would thus present a difficulty towards trans- 

 porting it to other lakes, artificial breeding, no doubt, 

 would easily succeed with it. 



The Pollan has sometimes been confounded with 

 the Powan, but they are distinct fish, although their 

 habits are very similar. It is found chiefly in Lough 

 Ifeagh, where it is in great abundance. It requires, 

 however, to be eaten soon after its removal from 

 the water, or it soon deteriorates. It is not quite 

 of so large size as the Powan. 



The Vendace, though found chiefly in Loch-Maben, 

 is said not to be confined to it, as it has been stated 

 that it is found also in other small lochs in the neighr 

 bourhood, though in smaller numbers. It seldom 

 exceeds seven or eight inches in length, YarreU, 

 speaking of this fish, is satisfied that its introduction 



