1912.1 



PUBLIC DOCUMENT — No. 31. 



93 



Table VIII. — Coefficients of Heredity within Strains. 

 Vine Length. 



If these strains are homogeneous, and if the positive correla- 

 tion shown in the first three gronps in Table I. is due chiefly 

 to the mixture of distinct strains or lines having different means, 

 as appears to be the case, we shonld get when we compute for 

 each of the strains as a unit, coefficients similar to those given 

 in Table 11. They are given in Table VIII. It is seen that 

 they are similar on the average, having a little lower positive 

 correlation for vine length and an insignificant negative corre- 

 lation for pods per vine. 



CORRELATIOX. 



The data on vine length and pods per vine already presented 

 give some evidence of a positive correlation between these two 

 characters which is in accordance with common observation. 

 In Table IX. are given some figures that show the value of this 



Tap.le IX. — Correlation Coefficients, Vine Length and Pods per Vine. 



