FLIES FOR APRIL. 



No. 13. GRAVEL BED. 



This fly is not upon all waters : upon those 

 where it is found it is extremely numerous on 

 fine days ; but in cold weather it seeks shelter 

 amongst the larger stones of the gravel. It may 

 be used all the day. It comes in about the middle 

 of April and lasts about three weeks. 



IMITATION. 



BODY. Dark dun, or lead-coloured silk thread 



dressed very fine. 

 WINGS. From the underside of a feather of the 



woodcock's wing. 

 LEGS. A black cock's hackle rather long, 



wound twice, only, round the body. 



To make it buzz, a dark dun cock's hackle tinged 

 brown may be used. 



