IX 



HEREDITY 



155 



sequently, it is not surprising that the, curve showing the 

 height of an Fg at the end of the season exhibits continuous 

 variation from one extreme to the other, especially since 

 we have seen that .the fluctuation in height is by no means 



50 100 150cm. 



Fig . 58. — Height of Stem in Pg of King (o) by Charara ( x ). 

 Stunted and damaged plants excluded. Ledger page, like Fig. 48. 



inconsiderable in a pure strain. There are modes in this 

 curve, nevertheless, and the following result shows that 

 they are not due. to accident. 



The F2, the heights of which in 1909 are shown in 

 Fig. 58, was used to provide an F3 from some thirty of its 



