SELECTIVE FERTILIZATION. 



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same two types of plants were used in all five pollen mixtures. 

 The mature inflorescences resulting from the application of mixed 



lit 



FIG- i. The pistillate inflorescence of maize at the time of pollination 

 vvith leaf sheaths removed. (About one half natural size.) 



pollen were divided into two approximately equal halves and the 



