DURATION or HUMAN LIFE. 55 
the proportions of thofe who die, after compleating the 
Soth year of their age, out of 1000 annual deaths,---for 
various cities, towns and countries.---A comparifon of the 
refults of thefe feveral tables, furnifhes very interefting 
conclufions, in regard to the fubje& of the foregoing ob- 
fervations. 
Although, in treating this fubject, I have protracted 
my obfervations to a greater length than I had defigned,— 
I cannot conclude without remarking, that the refult of 
this inveftigation has afforded me great pleafure.—- Mutt 
not the mind of every American citizen be imprefled with 
gratitude, and glow with emotions of a virtuous pride, 
when he refle&s on the bleflings his country enjoys? Let 
him contemplate the prefent condition of the United 
States,—enjoying every advantage which nature can be- 
ftow—inhabited by more than three millions of the free- 
eft people on earth—and poflefiing an extent of territory 
amply fufficient to maintain, for ages to come, many ad- 
ditional millions of freemen, which the progreffion of its 
population is fupplying, with wonderful celerity;—let 
him, alfo, contraft this fituation of his country, with the 
condition in which it was found by our anceftors, fearcely 
two centuries ag0;—and it will be impoffible for him not 
to experience, in an exalted degree, thofe fenfations, which: 
patriotifm and. benevolence ever infpire!——— 
I am, Dear Sir, 
With great Refpea, 
Your affetionate Nephew,,. 
W. BA.R-T.O N.. 
Philadelphia, March: 
17th, 1791. 
TABLES, 
