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. 
2 reverse is called an Imperfect Flower. 
\ Neutral Flower is one that has neither stamens nor 
pistils. 
