Essays on Mankind and Political ArithmeticPetty, William, Sir
History
Essays on Mankind and Political Arithmetic
Petty, William, Sir
London (England) -- Population; Population
Memorandum.—That if the people double in 360 years, that the present
320,000,000 computed by some learned men (from the measures of all the
nations of the world, their degrees of being peopled, and good accounts
of the people in several of them) to be now upon the face of the earth,
will within the next 2,000 years so increase as to give one head for
every two acres of land in the habitable part of the earth. And then,
according to the prediction of the Scriptures, there must be wars, and
great slaughter, &c.
Wherefore, as an expedient against the above-mentioned difference between
10 and 1,200 years, we do for the present, and in this country, admit of
360 years to be the time wherein the people of England do double,
according to the present laws and practice of marriages.
Now, if the city double its people in 40 years, and the present number be
670,000, and if the whole territory be 7,400,000, and double in 360
years, as aforesaid, then by the underwritten table it appears that A.D.
1840 the people of the city will be 10,718,880, and those of the whole
country but 10,917,389, which is but inconsiderably more. Wherefore it
is certain and necessary that the growth of the city must stop before the
said year 1840, and will be at its utmost height in the next preceding
period, A.D. 1800, when the number of the city will be eight times its
present number, 5,359,000. And when (besides the said number) there will
be 4,466,000 to perform the tillage, pasturage, and other rural works
necessary to be done without the said city, as by the following table,
viz.:—
A.D. Burials. People in People in
London. England.
1565 2,568 77,040 5,526,929
As in the 1605 5,135
former table.
1642 11,883
1682 22,331 669,930 7,369,230
1722 44,662
1762 89,324
1802 178,648 5,359,440 9,825,650
1842 357,296 10,718,889 10,917,389
Now, when the people of London shall come to be so near the people of all
England, then it follows that the growth of London must stop before the
said year 1842, as aforesaid, and must be at its greatest height A.D.
1800, when it will be eight times more than now, with above 4,000,000 for
the service of the country and ports, as aforesaid.
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