the lack of inheritance for these different characters. 

 In each case the dotted line represents the parent plants 

 and the solid line the offspring. These point out some 

 very interesting facts. While we find that in general 

 the coefficients of heredity are practically negligible 

 quantities, yet there are certain parents which reproduce 

 some of their characters. This we are to expect from 

 our knowledge gained by the study of populations. That 

 is, in the study of a mixed population we expect to find 

 certain lines which will reproduce to a marked degree. 



The charts show that the line representing the off- 

 spring for any certain character seems to rise or fall 

 independently of the value of the parental plant. These 

 diagrams show how in some cases the line for the off- 

 spring tends to go down rather than up, but no conclu- 

 sion must be drawn from this other than that it does not 

 follow the parent line and rise as the parent line does. 



Often there arises a question in the minds of those 

 believing in cumulative selection, which may be stated 

 as follows: If we take any population and group it ac- 



