102 



FISH FARMING 



Mallc'ch, of Perth, who has devised and superintended the 

 erection of th,e whole of the fish-passes with which I illustrate 

 this chapter, excepting that on the river Eden at Armar 

 thwaite. The fact is that the erection of a, fish-pass presents 



THE FISH-PASS AT BATTLEBY, AS SEEN FROM ABOVE. 



a< different problem in nearly every situation, the solving of 

 which can only be accomplished by someone who has not only 

 a thorough knowledge of the habits of salmon and sea-trout, 

 but also an opportunity of thoroughly inspecting the condi- 



