1912. 



PUBLIC DOCUMENT — No. 31. 



93 



Table VIII. — Coefjicients of Heredity within Slrains. 

 Vine Length. 



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

 tion shown in the first three gronps in Tahle I. is dne chiefly 

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

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

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

 in Tahle II. They are given in Tahle 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. 



CORRELATIOiSr. 



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 



Table IX. — Correlation Coefficients, Vine Lengili and Pods per Vine. 



