108 



FISH FARMING I 



populated by salmon and seantrooit in season, and, of course, 

 the value of the fisheries so benefited has been considerably 

 enhanced. A similar obstruction, existed and has bsen over- 

 come in the same manner at the point where the Luncarty 

 pass has been erected. It will be noticed that in each case 

 Mr. Malloch has adopted similar designs for the passes, and he 

 was good enough to fully explain the working of his methods 

 to me upon the occasion of my visits for the purpose of obtain- 



A FISH-PASS, SHOWING ARRANGEMENT OF BOULDERS- 



ing the photographs. And here again we find that the method 

 owes its perfection to the simplicity and practical character of 

 the design. 



A properly designed fish-pass permits the fish to gain access 

 to the waters above through a sufficient volume of water in the 

 pass without being compelled to leave the water in the pass at 

 any point or part for the purpose of leaping up and over any 

 obstruction. Once understand this clearly, and the secret of 

 success is yours. It does not follow that because a fish is seen 

 leaping at a fall that it is sure to overcome the obstacle. It 



