AMERICAN BREEDERS ASSOCIATION 59 



following year in the same way. Here again in pure Strain H all 

 exceptionally vigorous or aberrant individuals should be discarded as 

 being probably due to the entrance of foreign pollen. 



I am not prepared at present to say what will be the probable cost 

 of seed-corn when produced by this method, but have reason to suppose 

 that it would be more expensive than by the present method ; nor can 

 I surmise what relation this increased cost will bear to the increased 

 yield that will be produced. These are practical questions which lie 

 wholly outside my own field of experimentation, but I am hoping that 

 the Agricultural Experiment Stations in the corn-belt will undertake 

 some experiments calculated to test the practical value of the pure-line 

 method here outlined. 



