THE LENGTH OF LIFE
There is an old rule for finding the length of life if the present age lies between twelve and eighty-six years. Subtract the present age from 80, and divide the remainder by 2; the result will give the number of years you have yet to live. This old rule was discovered by the mathematician De Moivre, who emigrated to England from Franco in 1865, and became a member of the Koyal Society. Another statistician affirmed from his calculation that of 1000 individuals of sixty year's 500 will live to he seventy, 120 to be eighty years, and 17 to he ninety, while of 1000 nonagenarians four will reach their hundredth year.
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Nelson Evening Mail, Volume LXIV, 2 April 1930, Page 7
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115THE LENGTH OF LIFE Nelson Evening Mail, Volume LXIV, 2 April 1930, Page 7
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