A N N 



TABLE T. 



Mean Standard Table of Hie Decrements of Life in Great Britain, 1821. 

 ~(Dr Young's Phil Trans. 1826.,) 



Dr Young's formula expressing the decrement of human life is 

 y = 368 + 10 x 11 (156 + 2 o x #*)* -\ 



5. 



?/ being the 



number of deaths among 100000 persons, in the year that completes the 

 age x, ; y 368 + 10 x may be employed as sufficiently correct for the 

 middle portion of life, being certainly much nearer to the truth than De- 



moivre's hypothesis, who makes y = ' 1163 throughout life. 



