98 



FISH FARMING I 



CHAPTER IX. 

 FISH-PASSES. 



So far, my remarks have been limited to the formation and 

 improvement of fisheries in which it is proposed to cultivate 



THE LAKE, FISH-PASS, AND DAM AT BATTLEBY. 



non-migratory Salmonidse or, rather, what are generally 

 known as non-migratory Salmonidse. In the present chapter 

 I propose to have something to* say about opening out waters 

 for the migratory fish, i.e., Salmo Salar, the salmon proper, a^d 

 Salmo Truttai, the sea-trout. Of the value of these fish, both 

 from ai sporting and a marketable point of view, there can be- 



