484 
The Ohio Naturalist. 
[Vol. XV, No. 6, 
order to determine both the nature and degree of such variations. 
From plant 7 of the series 17-12-4 (F-3 generation) 58 fruits were 
examined. The curve formed by these weights is shown in 
Figure 1. The fruit-weights vary 2.35 grams. The mode is 
shown to be less than the arithmetical mean and therefore the 
skew is negative. 
From plant 14 of the series 15-11-2—II—II (F-2 generation) 
28 fruits were harvested and the curve formed by the weights of 
these fruits is shown in Figure 2. The fruit-weights vary 1.93 
grams. As shown on this plate the mode is a little more than the 
arithmetical mean and therefore the skew is slightly positive. 
