EXPLANATION OF PLAN. 



This plan ri'X'i'es euts the exact form and position of tlie fixtures employed in 1H77, 

 and they were substantially the same in 1876. 



The left-hand edge of the dra-wiug represents a line 50 or 60 feet below the dam 

 which commands the flowage of Grand Lake. lunnediately below the dam lies a 

 broad, deep i)Ool, part of which is shown on the plan. The dam itself is of the sort 

 constructed by log-driving companies to store and control the water of lakes for the 

 purpose of floating logs down the river, and is provided with deep sluice-gates, through 

 ■svhich, when open, flows the water, which is never allowed to pour over the tops of 

 the dams. In nearly all cases the gates are so low that fish can easily pass up or 

 down, and this is especially the case with the dam in question. It is not looked upon 

 as any hinderance to the descent or ascent of the salmon, except when the water is 

 veryloiv, as sometimes occurs in early autumn ; but even then the situation is not 

 such as to prevent the majority of them passing down into the stream. Great num- 

 bers of them collect in the deep jiool just before the commencement of the spawning 

 season, and there safely bide their time. From the pool the main current is through 

 the artificial channel denouiiuated the "Main Lead." Here the water is shoal and 

 swift, and the bottom gravelly, and many fish are tempted to stop here and make their 

 ridds. The majority, however, piish on and are led by the nets into the inclosure A, 

 from which they rarely find their way back into the main lead, but after a while are 

 led into inclosure B. Here they are caught in dip-nets, coimted and placed in C, 

 which is deep and capacious enough for them to lie at ease; or, if the spawning time 

 has actually arrived, they are placed for the night in E or D, and next morning exam- 

 ined and spawned so far as they are ready . The nets are all w'eighted by chains 

 at the bottom, and by simply lifting them th". fish can be driven underneath from one 

 inclosure to another. When taking spaAvu the fish to be operated on are gathered 

 without handling in front of the spawning-shed, at H. From the deep pound, C, 

 they are drawn up by a seine or sweep-net. The fish from which eggs are taken are 

 placed in F ; those unripe in E or D, to be afterward driven into C. The males are 

 divided and part of them placed with each party of females.. After being pressed a 

 second time, the fish are di'opped out of apertures in the back of the spawning-shed 

 into I, whence they run up to L, where is a deep pool for them to lie in imtil the 

 spawning operations are at an end, when they are removed in cars to a safe distance 

 m the lake. 



