f 473 1 . 
a greater proportion than Sir William Petty allowed. 
And which if it is thought too fmall, it is to be con- 
fidered, that within the bills of mortality the births 
are much under the burials as 4 to 5 ; and in fome 
of the great towns there are fewer births than burials, 
and in others they are nearly equal ; fo that thefe 
reduce the proportion that arifes from the villages and 
open country. 
But if we were to make a calculation from the births 
and burials, only in the villages and open country; 
which Dr. Derham has found to be at an average as 
1 17 to 100, or nearly as 7 to 6 ; and fuppofe this to 
obtain all over Britain and Ireland, in the towns as 
well as the country, which is furely more than the 
truth; we fhall then find, that the annual increment 
cannot be more than 9000 fencible men ; which cor- 
roborates my former eflimate. For, to compute it by 
the principles I have formerly endeavoured to eftablifh ; 
let the number of our people in Britain and Ireland be 
eight millions and an half, that is, f ve and an half in 
England and three millions in Scotland and Ireland ; 
becaufe fome Irifh Gentlemen have affured me, from 
fome facds, that there is half a million more in their 
country than I formerly allowed ; for I did not pre- 
tend to calculate them ; and then the annual number 
of the dead, in Britain and Ireland, being one in 40, 
will be about 212,500; which will be to the births 
as, 100 to 1 17: And therefore the births mud be 
248,625, and the increafe 36,125 ;. of which the 
fourth part is about 9000 for the fencible men, which 
I am perfuaded is more than the real number. 
Now let any one compute our Ioffes in the mode- 
rate way that I have done, and he will eafily fee, that 
Vol. 50. Ppp they; 
