50 



VARIOUS FOOD-PLANTS 



Fig. 39 II. — Kidney Bean. A, flower, about twice natural size. B, the 

 same with w^ings pressed down as if by a bee sucking neetar; showing 

 the stigma and poUen-eoi'ered end of the style protruding hoin th(^ 

 coiled tubular keel. A bee's head or Imck covered with bean pollen 

 W'Ould be in position to deposit some of the grains upon the protruding 

 stigma and thus enable the plant to set good seeds, w'hile an instant 

 later it would be touched by the pollen on the st^de and so receive a 

 new^ load to take to another bean-flower. C, a flower cut in halves 

 vertically to show the arrangement of parts l)efore protrusion of the 

 stigma. Enlarged and somewhat diagrammatic. (Original.) 



