116 THE WONDERFUL TROUT 



When we did use it we felt inclined to 

 break our rod as not likely ever again to be 

 successful in honest and gentlemanly sport. 

 I think now, that rod must be where all bad 

 rods go, and that it has been there now for 

 at least thirty years. But this by the way. 



Process of population, and dispersal of 

 insect life in a stream. Take the ' March 

 brown,' hatching out in March and April, and 

 in higher reaches even all summer and into 

 August (' August dun '). The fly floats down 

 stream, cock-winged in flotillas. The females 

 lay their eggs on the surface, and die. Eggs 

 reach the bottom in time, and in correct 

 season and in normal seasons hatch-off and 

 become larvse. Later, they pass upward again 

 to the surface, reaching the surface with the 

 current, and become male and female ' March 

 browns,' or various shades of that well-known 

 insect. Again the females float down stream, 

 lay eggs, and die. 



Given that the above is correct so far, 

 there is evident tendency to populate reaches 

 lower down than those where the winged 

 insect deposited its ova. 



But if a wind blows up the river, or up 

 any reaches of it, the females and males are 



