Actuarial Aspects of Human Lifespans 9 



arguable and it is proposed to adopt the latter hypothesis 

 here. 



The data used 



The analysis already described was applied to three national 

 life-tables (for both males and females, though Figs. 1-3 

 relate to males only): 



Fig. 3. Curve of deaths. English Life-Table No. 11. 1950-1952. Males. 



— — total deaths 



senescent deaths 



— — . — — . — anticipated deaths 



English Life-Table No. 1. The first to be compiled by Dr. 

 William Farr and based on the deaths of 1841. It differs from 

 the other two tables which in the case of both males and 

 females start with a radix of 100,000 births, in that Farr to 

 facilitate the product of a "persons" table chose radices of 

 51,274 male births and 48,726 female births (the proportions 



