m 



perhaps, deliberately waiting at the edge of the rapids, 

 and in the still ; or the turning water forming those large, 

 placid eddies to be found in such places. 



In such cases the angler may rove to advantage, having 

 one, two, or perhaps three, stout shots on his line to 

 sink his bait a little ; which would else be perpetually 

 kept near the surface, by the velocity of the current. He 

 should lose no time in getting such fishes as he may hook 

 into a stiller water, as the strong parts are peculiarly 

 unfavourable to his efforts ; besides that the turbid invo- 

 lutions render his precautions less certain and less effec- 

 tual. 



To be convinced of this, let him put a dead fish on his 

 hook, and suspend it from the mill-back in the water, 

 where its action is sharpest ; he will there find his rod far 

 more oppressed, and his own management of it far more 

 difficult, than in the calmer and quieter parts 5 where 

 he can lead the fish about according to his own fancy, 

 while it feels quite light to his hand. 



Wherever any manufactory appears, or any business 

 is carried on, such as impregnates the air with unwhole- 

 some, or offensive smells, there will also be a taint of a 

 similar description communicated to the waters. Thus 

 copper works, sulphur works, hatters works, dyers iu 

 general, and all such trades, affect the waters greatly. 



In the vicinity of and especially below, founderies, &c. 

 the fishes are scarce -, and such as do exist there, are 

 flabby : they indicate the insalubrity of the stream, both 

 to themselves and to all animals. Hence an excellent 

 criterion may be adduced, in regard to the fitness of wa- 

 ter lor culinary purposes, and as a component in various 

 beverage. I am inclined to believe, that no fishes survive 



such 



