52 SALMONIA. 



the brown and white, which, in June and 

 July, are seized with avidity by the fish; and 

 being large flies, take large fish. 



Orn. — Surely the May fly season is not 

 the only season for day fishing in this river? 



Hal. — Certainly not. There are as many 

 fish to be taken perhaps in the Spring fish- 

 ing; but in this deep river they are seldom 

 in good season till the May fly has been on, 

 and a fortnight hence they will be still better 

 than even now. In September there may 

 be good fish taken here; but the autumnal 

 flies are less plentiful in this river than the 

 spring flies. 



Phys. — Pray tell me what are the species 

 of fly which take in these two seasons. 



Hal. — You know that trout spawn or 

 deposit their ova and seminal fluid in the 

 end of the autumn or beginning of winter, 

 from the middle of November till the begin- 

 ning of January, their maturity depending 

 upon the temperature of the season, their 

 quantity of food, &c. For some time (a 

 month or six weeks) before they are pre- 

 pared for the sexual function, or that of re- 



