THE INHERITANCE OF DURATION 171 



at death of brethren who die as minors. As a matter of fact this correla- 

 tion for minor and minor is 40 to 50 per cent, less than in the case 

 of adult and adult. It would thus seem that identity of environment is 

 not the principal factor in the correlation between ages of death, for this 

 correlation is far less in youth than in old age. 



TABLE 19 



Inheritance of duration of life. Data from Quaker records. 



(Beeton and Pearson) 



The cases above the horizontal line are all direct lineal inheritance; 

 those below the line collateral inheritance. 



The results regarding minors to which Pearson refers 

 are shown in Table 19. This table gives the results of 

 the second study made by Beeton and Pearson on inher- 

 itance of duration of life, based upon the records of the 



