[ i8o ] 
ipf6i, and burials 24867 is 5306, there muft be 
a conftant fupply, yearly, of at leaft 5000 Grangers, 
to keep up the people within the bills, to their pre- 
lent number : And the births are to the dead yearly, 
about 4 to y. 
If we had, in the fame manner, computed the 
births from Mr. Smart’s corredled table, they would 
have been found to be that is, J y6p fewer 
than we have made them. And if from thence we 
had calculated the number of people living to 20 
years of age, and afterwards, by proportion, to 90, 
the whole number of people within the bills would 
have been about yzioooj which is above 150000 
fewer than any other reafonable calculation can 
make them 5 which I think clearly diews, that the 
hypothefis upon which that table is founded muff be 
wrong, and that what I have laid down above is nearer 
to the truth. 
Now, from the births found 195-61, ^and the 
numbers of the dead in the different periods 
known by our bills, it will be eafy to form a table of 
the decrements of life ; becaufe the dead in the in- 
termediate years may be found by what has been 
faid above. And accordingly I have computed the 
following, which is ccnftrudted from the London and 
Breflau bills together ; which I think is a furer me- 
thod of computing for us at London, than from 
either of them alone. The firft part to the 2ifl 
year, is done from our bills, and the other part from 
the Breflau i but it is formed in fuch a manner, that 
it goes on as if from the bills of one place only. For, 
after the age of 20, it is continued by proportion, by 
making the dead at London in the decennial periods, 
to have the fame ratio to one another as the dead at 
Breflau, 
