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THE AMERICAN NATURALIST [Vol. XLV11 



creased. There is a greater "scatter" to the distribution. With 

 the stalk height of corn the "scatter" is not much increased, but 

 the whole polygon is moved bodily to a higher position. The fer- 

 tilizer had a direct effect on every stalk of corn, increasing its 

 stature, but it had little effect on the productiveness of a few of 

 the bean plants, though increasing that of most of them. 



J. K. Shaw 



