THE COVERING STRIPS 167 



feathers, and " marry " the corresponding strips 

 of the two former together, "left" strips for 

 the right wing, and vice versa, the Pintail 

 being placed so as to lie below the Summer 

 Duck (Fig. 83). 



FIG. 82. 



The Mallard strips are put on last in the 

 formation of the wing, and in order to help 

 the curved shape of the wings the " left " strips 

 in this case are tied in on the left side and 

 vice versa (Fig. 84). 



