*Burials at London.*

535

To conclude, the Houses of *London* being 105315, and the addition of double Families 10531 more, in all 115846; I multiplied the same by 6, which produced 695076 for the number of the People.

*The Second way.*

I found that the years 1684 and 1685, being next each other, and |27| both healthfull, did wonderfully agree in their Burials, *viz.* 1684 they were 23202, and *Anno* 1685 23222, the Medium whereof is 23212; Moreover that the Christnings 1684 were 14,702, and those *Anno* 1685 were 14730, wherefore I multiplied the Medium of Burials 23212 by 30, supposing that one dies out of 30 at *London*, which made the number of People 696,360 Souls^{[1]}.

Now to prove that one dies out of 30 at *London*, or thereabouts, I say,

1. That *Grant* in the ^{[2]} page of his fifth Edition, affirmeth from observation, that 3 died of 88 *per* |28| *an.* which is near the same proportion.

2. I found that out of healthfull places, and out of adult persons, there dies much fewer, as but 1 out of 50 among our Parliament men, and that the Kings of *England* having reigned 24 years one with another, probably lived above 30 years each.

3. *Grant,* page hath shewn^{[3]} that but about 1 of 20 die per an. out of young Children under 10 years old, and Monsr. *Auzout* thinks that but 1 of 40 die at *Rome*, out of the greater proportion of adult persons there, wherefore we still stick at a Medium to the number 30. |29|

4. In 9 Countrey Parishes lying in several parts of *England*, I find that but one of 37 hath died *per an.* or 311 out of 11507, wherefore till I see another round number,

- ↑ Cf. p. 506, where, by averaging more years, Petty gets a smaller population.
- ↑ Page 82 of the fifth ed., p. 385 of this reprint. Graunt says that 3 died out of 11 families and guesses that the families have, one with another, 8 members.
- ↑ Graunt makes no such assertion. Petty's proposition appears to be a guess which may find some slight support on pp. 386–387 of Graunt.