IX 



HEREDITY 



producing a group of plants with leaves of identical 

 length (i. e. , identical within the P.E. of fluctuation). Thus 

 it seems highly probable that the length of the leaf 

 is inherited as a separate character, although it is distorted 



P.s. 



F x . 



F a .R. 



King 



Sultani 



100 



150 



Charara 



Afifi 



I 



200 



P.S 



F.I. 



F. 2 . 



Two F 3 families 



50 



100 



150 ' 



mm. 200 



FIG. 59. LENGTH OF THE LEAF. 



from the parental length by autogenous fluctuation. The 

 same probability is suggested by correlation diagrams for 

 leaf-length with height, with petal length, &c. ; such 

 diagrams show a distinct indication of isolated groups, 

 such as we shall inspect shortly in the flower measurements. 



