Prince. — A Perfect Fish Pass 53 



pool just below the fall, not one of which could get up any 

 further. I visited for the fourth time recently a famous 

 salmon river in northern New Brunswick, up which the 

 fish ascend for twenty miles, and then are blocked by 

 lofty falls. The pools are few and the spawning grounds 

 very limited, much of the twenty miles consisting of nar- 

 row rocky channels and gorges ; but above the falls there 

 extend for sixty miles the most perfect salmon waters, 

 clear, transparent, rippling water, superb pools and rif- 

 fles ideal in every way for spawning, and for the finest 

 fly-fishing. Thus a river affording less than twenty miles 

 would be converted into one of eighty miles and a far 

 superior river by the erection of the Perfect Fish Pass 

 at the upper falls. 



THREE NEW FEATURES: A LEADER OR WING, A LARGE 

 ENTRANCE AND PORTABILITY. 



I do not wish to repeat myself, but as my Perfect 

 Fish Pass may be found to be capable of meeting difficul- 

 ties which I have overlooked, I trust that such difll- 

 culties will be mentioned here today. My object is 

 to elicit a discussion and to hear of the experience of 

 others, and I will close therefore by referring to a few 

 of the features which will be found in this Perfect Fish 

 Pass: 



(1) To be of any use a fish pass must be found by the 

 fish. The fish must find the entrance to the Perfect Fish 

 Pass because a wall of wire netting, a "leader," is part 

 of the design and stretches across the channel and guides 

 the fish to the opening, just as salmon and other fish 

 are led or guided into a fish trap.* 



(2) The entrance is not small, dark or forbidding, but 

 large and open and admitting all the light possible, 

 hence no fish will be deterred from entering. The small 

 entrance and narrow aperture in the successive com- 

 partments in most fishways are necessary to reduce the 

 down-rush of water, to economize the water, and lessen 



*Most every existing fish pass is correctly named because the fish 

 do pass it and fail to find it. 



