DURATION or HUMAN LIFE. 49 
46 of the inhabitants of Conneticut, who were living in 
1774, were upwards of feventy years old: and that it is 
found, from actual calculations, that about one in eight 
live to the age of feventy years; one in thirteen, to the 
age of eighty; and one in about thirty, to the age of nine- 
ty years.— From the 1ft January 1771, tothe 1ft January 
1777>---239 perfons died at Milford, (Connedticut;) of 
which thirty-three, or about one feventh part, were up= 
wards of feventy years old---and eighty four.. From Jan. 
ift 1771, to June 3d.1782, died at Milford, 417 perfons; 
of which, thirty-one (or about one thirteenth part of the 
whole number) were eighty years old, and.upwards. O- 
ther calculations of a fimilar kind, continues Mr. Morfe, 
made in different parts of the fame ftate, from the bills of 
mortality, confirm the juftnefs of the above proportion.”-- 
The number dying in Philadelphia, aged upwards of eighty 
years, during the year 1789, isin the proportion of a- 
bout twenty-four and an half out of 1000 perfons. Thole 
dying after that age, and upwards tothe age of roy in- 
élufive, muft have been born between: 1688 and the end 
of 1709. During this term of twenty-one years (commenc- 
ing about fix years after the firft fettlement of iuropeans,. 
on this {pot,) it is not probable that more than 1000 chil- 
dren were darmhere; and, even admitting thata// of thefe 
died here, the proportion of /uch could not, agreeably to 
Dr. Halley’s eftimate, exceed thirty-four, during the 
year 1739. Butit-is probable, that many of thofe who. 
were born here, during the above mentioned term of 
twenty-one years, had removed from the city, prior to 
the year 1789; and it is alfo probable, that fame of thofe 
who died at Philadelphia in that year, aged upwards of 
eighty, were not natives of this city—It may, therefore, 
be prefumed, that the chances of an.addition to. the num- 
ber of thofe dying after eighty, which have been loft by 
the removal of natives before that age, may be balanced by 
the: 
