f. 62 3 
of, may be of life for fuch a pifrpofe, as directors; 
and, by inverting the proportionals, be applied to 
find the deaths of lives given, from year to year (21): 
for as thefe may be previoufly digefted, with greater 
regularity, and the number of deaths found, by mul- 
tiplying the given lives by the former, or dividing 
them by the latter, a way is opened for conducting 
the work in larger numbers, and with great exa&> 
nefs : and I conceive, that ten of the belt accounts 
of different places, each formed by proportion for 
10,000 births, and all thrown together in the ufual 
feCtions, if properly aided in the latter part of life by 
the London bills, might be fufficient, at lead, would 
be much better than any thing we have ; for tables 
of 1000, 12^8, or 1400, are quite dilfanced here, 
having no lives at all of 100 years. And yet, who 
can believe that Dr. Halley’s 34,0c©, if they were 
fo many, much lefs Mr. Kerfeboom’s 980,000, had 
none of 100 years and upwards; when the London 
bills afford about 8 in a year; and, upon the whole 
of 750,222 burials in the faid 30 years, have 242 
of that age ? Or, who can give a reafon, if they 
had fuch, why they conftruCted their tables on fo 
finall a balls, as wholly to exclude them ? 
It may be faid, the 242 perfons, dying above 100 
years of age, did not arife from 750,222 births in 
town, but from a great many more brought in from 
(21) Thefe might be tried, or regulated, by proportions formed 
from other accounts, taking the deaths between 10 and 20 (or 
the moft certain period) in each, for the two leading proportionals, 
and trying above and below for lives and deaths. Lefler accounts 
of fingle parifhes will not do alone ; for as aged lives are rare, one 
is forgotten before another happens, and in fmall numbers they 
are not to be expe&ed. 
the 
