86 THE TROUT 



or lake, the principal matters to be remembered in 

 connection with their welfare are, that the water 

 should be kept as pure and uncontaminated as 

 possible ; that ' hide ' and food for the fish are 

 absolutely essential, so that much care must be taken 

 to avoid over-thinning when weed-cutting ; and that 

 a good fishing keeper one who is constant in his 

 attention to the water, and to the needs and 

 necessities of his finny dependents is invaluable. 



If these matters are attended to, then, given 

 ordinary good fortune, there should be no great 

 difficulty in persuading trout to live and prosper in 

 most rivers or lakes in Great Britain. 



