302 



Miss M. Beeton and Prof. Karl Pearson. 



Fig. 3.— Diagram giving tbe Mean Age of Man at Death for a Brother dying at 

 given Age. 1000 cases. 



























1 











\y 

















1 





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b 





a,b,c, 



1,7? 





•UdLt, i 



Lborii. 



?epre 



LcLV* 



ssior 



; 



PoLy 



§0/7. 













Q=Mt 



M 



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o 



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gress 

 e AU 



ion L 

 drotk 



ine. 

 ers a 



£ Dec 











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d 





















X 











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V 









































45 50 55 60 65 70 75 80 85 30 



Mean Age of First Brother. 



35 100 105 



that is allowed rather indefinite weight at present in the actuarial and 

 medical professions. Based on a wider mass of data and a larger series 

 of relationships we cannot but believe they would be of much help to 



variability of grandfathers, which must be less than that of fathers, or their mean 

 age at death, which musk be greater than that of fathers, in order to determine the 

 probable age at death of a man from that, say, of his grandfather and father, which 

 would be of much interest. We only wish to draw attention to what we believe to 

 be a new and important field of enqxiiry, and to indicate tbe nature of its problems. 



