8 A CHAPTER TO STUDY. 



carried to the stigma of another by some extraneous agency, 

 such as the wind or animal life. 



Self-Fertilization is when the stigma receives the pollen 

 from the stamens in the same flower-cup as itself. To prevent 

 this catastrophe the plants are ever upon the alert, experience 

 teaching them that the result is not good. Often either no 

 seeds at all mature or their progeny is a weakling. 



FIG. 30. 



FIG. 31. 



FIG. 32. 



FIG. 29. 



A Perfect Flower is one that has both stamens and pistil. 

 The reverse is called an Imperfect Flower. 



A Neutral Flower is one that has neither stamens nor 

 pistils. 



