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THE AMERICAN NATURALIST 



[Vol. XL VI 



coefficient of fecundity, and have but little effect upon 

 seed weight. 



The influence of the modification of the ascendants 

 upon the characteristics of the descendants is extremely 

 slight. There seems, nevertheless, to be a definite reduc- 

 tion in the number of pods per plant and number of 

 ovules per pod. There is also a possible lowering of the 

 absolute and relative number of seeds per pod. Ap- 

 parently, there is no modification of seed weight. 



