136 



SALMON FLIES 



wards, until its upper edge exactly coincides 

 with an imaginary line bisecting the hook 

 longitudinally in two equal halves i.e., the 

 middle line (see pp. 16, 17, 18, and Fig. 2 on p. 17) 

 so as to leave an equivalent portion of the silk 

 foundation to be occupied by the left wing. 



FIG. 53. 



Having secured the proper set of the wing, 

 as just indicated, take two more turns of silk 

 to the right, being careful to see that the waste 

 end of the strip is not allowed to encroach 

 upon that portion of the foundation on the 

 far side of the imaginary line referred to by 



