TREATISE ON FLY-FISHING. JQ 



river by the numerous enemies they encounter 

 there such as porpoises, and seals, which devour 

 them in great quantities ; however this may be, 

 they remain in the fresh water till the spawning 

 months begin. In the cold months, they lie in 

 deep and easy water, and as the season advances, 

 they draw into the principal rough streams, 

 always lying in places, where they can be least 

 easily discovered. They prefer lying upon even 

 rock, or behind large blocks of stone, particularly 

 such as are of a colour similar to themselves. 

 At every rise of the river from floods, the fish 

 move upwards, nearer the spawing places, so 

 that no one can reckon on preserving his particu- 

 lar part of the river, which is the chief reason of 

 the universal destruction of those valuable animals. 

 Previous to a flood, the fish frequently leap out 

 of the water, either for the purpose of filling 

 their air bladder, to make them more buoyant 

 for travelling ; or from excitement ; or perhaps to 

 exercise their powers of ascending heights and 



