50 



VARIOUS FOOD-PLANTS 



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

 same with wings pressed down as if by a bee sucking nectar; showing 

 the stigma and policn-covcrcd end of the style protruding from the 

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

 would be in position to deposit some of the grains upon the protruding 

 stigma and thus enable the plant to set good seeds, while an instant 

 later it would be touched by the pollen on the style and so receive a 

 new load to take to another l)can-flower. C, a flower cut in halves 

 vertically to show the arrangement of parts before protrusion of the 

 stigma. Enlarged and somewhat diagrammatic. (Original.) 



