Essays on Mankind and Political ArithmeticPetty, William, Sir
History
Essays on Mankind and Political Arithmetic
Petty, William, Sir
London (England) -- Population; Population
He lays down that if the first peopling of England was by a colony or
colonies, consisting of a number between 100 and 1,000 people (which
seems probable), such colony or colonies might be brought over between
the year of the world 2400 and 2600, viz., about 800 or 900 years after
the Flood, and 1,400 or 1,500 years before the birth of Christ, at which
time the world might have about 1,000,000 families, and 4,000,000 or
5,000,000 people.
From which hypothesis it will follow by an orderly series of increase—
That when the Romans invaded England fifty-three years before Christ’s
time, the kingdom might have about 360,000 people, and at Christ’s birth
about 400,000.
That at the Norman Conquest, A.D. 1066, the kingdom might contain
somewhat above 2,000,000.
That A.D. 1260, or about 200 years after the Norman Conquest, it might
contain about 2,750,000 people, or half the present number: so that the
people of England may have doubled in about 435 years last past.
That in all probability the next doubling will be in about 600 years to
come, viz., by the year 2300, at which time it may have about 11,000,000
people, and the kingdom containing about 39,000,000 of acres, there will
be then about three acres and a half per head.
That the increase of the kingdom for every hundred years of the last
preceding term of doubling, and the subsequent term of doubling, may have
been and in all probability may be, according to the following scheme:—
Anno Domini. Number of people. Increase every hundred
years.
1300 2,800,000
1400 3,300,000 440,000.
1500 3,840,000 540,000.
1600 4,620,000 780,000.
1700 5,500,000 880,000.
1800 6,420,000 920,000.
1900 7,350,000 930,000.
2000 8,280,000 930,000.
2100 9,205,000 925,000.
2200 10,115,000 910,000.
2300 11,000,000 885,000.
Whereby it may appear that the increase of the kingdom being 880,000
people in the last hundred years, and 920,000 in the next succeeding
hundred years, the annual increase at this time may be about 9,000 souls
per annum.
Public-domain text, read in full here on John Shaqi.
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