486 The Ohio Naturalist. [Vol. XV, No. 6, 



heavier than li.'IS grams while three fruits are lighter. There is 

 thus a remarkable agreement between the geometrical mean and 

 the actual generation fruit average. 



There were four distinct series of F-2 plants grown. Each 

 series was derived from a separate parent F-1 plant or fruit. The 

 following table shows the average fruit-weights of the plants of 

 the F-2 series 15-11-2— II-I: 



The average weight of fruit for the above series is 2.54 grams. 

 The series 15-11-2 — II-II, was composed of F-2 plants which 

 gave the following average weights of fruits : 



The average weight of fruit of this series is 2.29 grams. 

 The following table shows the average fruit-weights of plants 

 of the F-2 series 15-11-2—5-1: 



The average weight of fruits of this series is 2.54 grams. 



