your Majesty to accept from

Your Majesty's
Most humble, loyal, and obedient subject,
WILLIAM PETTY.



AN ESSAY IN POLITICAL ARITHMETIC



Tending to prove that London hath more people and housing than the
cities of Paris and Rouen put together, and is also more
considerable in several other respects.

1. The medium of the burials at London in the three last years--
viz., 1683, 1684, and 1685, wherein there was no extraordinary
sickness, and wherein the christenings do correspond in their
ordinary proportions with the burials and christenings of each year
one with another, was 22,337, and the like medium of burials for the
three last Paris bills we could procure--viz., for the years 1682,
1683, and 1684 (whereof the last as appears by the christenings to
have been very sickly), is 19,887.

2. The city of Bristol in England appears to be by good estimate of
its trade and customs as great as Rouen in France, and the city of
Dublin in Ireland appears to have more chimneys than Bristol, and
consequently more people, and the burials in Dublin were, A.D. 1682
(being a sickly year) but 2,263.