s4 OBSERVATIONS on roe” «= 4 
out of 1000 perfons, in the city of Philadelphia, and the 
town of Salem in Maflachufetts, at eleven different peri- 
ods of life. The table for Philadelphia, (No. 1.) 1s con- 
ftructed from the bills of mortality for the congregations 
of Chrift-church and St, Peter’s in this city, fort twenty- 
two years; viz. from Chriftmas 1754, to Chrifimas 1790, 
exclufive of fourteen years during that term. And the 
table (No. 2.) is formed from the bills for the fame con- 
gregations, for the years 1782, 1788, 1789 and 1790: 
from which it will appear, that, although one-eighth of 
the whole number, in the bill for 1782, are {tated to have 
died of the {mall-pox, the mortality has been lefs, taking 
the medium of thefe four late years, that the medium of 
eighteen preceding years gives it—The table for Salem, 
in Maflachufletts, is formed from the bills of mortality, 
for that town, for the years 1782, 1783, 1788 and 1790: 
But I have before obferved, that the years 1782 and 1783 
were unufually fickly; and this circumftance has, no doubt, 
exhibited the probabilities of life too low, for that town; 
efpecially, as I find the bill for 1788 makes the probabilities 
confiderably higher, than the average of thofe four years. 
I have alfo given a general table of the probabilities of life, 
at the fame periods of its duration,—formed from the efti- 
mates of the Count de Buffon ;—one for thecity of Paris, 
alfo from the eftimates of that celebrated author ;---and, 
likewife, tables for fundry other cities and places; which 
I havetaken from thofe fubjoined to Dr. Price’s eflay on 
the expectations of lives, and adaptedtothe fame feale and 
the fame periods of life, as the others.—Belides thefe, I 
have ftated the proportions dying, annually, out of the 
whole number of the living, in a variety of places ;—and 
the 
+ 1 was favored with thefe bills by Michael Hillegas, Efq.---The earlieft is from Chriftmas 
1754 to Chriftmas 1755; andthe lateft is for the laft year, ending at Chriftmas. Mr. Hil- 
Jegas furnifhed me with two others, viz. for the years 1756 and 1759; making, in the whole, 
twenty-four years: but, as there appears to have been a very extraordinary degree of mortality, 
among children under three yearsof age, during thofe years,---I left them out of my calcula- 
tions. ‘The bills for twelve other years, between 1755 and 1790, could.not be obtained. 
