CH. IV.] FASTENING FOR BOB-FLIES. 59 



casting-line should be cut at the place where 

 you wish the bob-fly to be attached, and the two 

 ends placed overlapping one another. With each 

 end (previously well soaked) you make a simple 

 knot round the adjacent part of the casting-line, 

 and draw them moderately tight. Then, having 

 previously cut the gut attached to the bob-fly to 

 the proper length, and tied a knot in it to pre- 

 vent it from slipping, you insert the knotted end 

 between the two pieces of the casting-line which 

 lie between the knots, and give it a single turn 

 round one of them. Then just draw these knots 

 together. Pull down the gut of the bob-fly to 

 the knot in it. Wet the knots once more in 

 your mouth to make assurance doubly sure; pull 

 each of those on the casting-line quite tight, and 

 then the two firmly together. It is now complete. 

 When clipping off the ends of the gut however 

 remember to leave about a sixteenth of an inch 

 projecting beyond each of the two knots in the 

 casting-line. Should you wish to change your fly, 

 you can then, taking hold of one end with your 

 teeth and the other with a small pair of pliers, 

 which no fly-book should be without, pull them 

 apart, take out your fly, put in another, and 

 draw them together again. This fastening, before 



