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Rh many Acres of unimproved improvable Land to every Head, as there are in England, As for Thieves, they are for the most part begotten from the same Cause; For it is against Nature, that any Man should venture his Life, Limb, or Liberty, for a wretched Livelyhood, whereas moderate Labour will produce a better. But of this see Sir Thomas Moor, in the first part of his Utopia.

10. As to the Propagation and Improvement of Useful Learning, |41|

The same may be said concerning it as was above-said concerning Manufactures, and the Arts of Delight and Ornaments; for in the great vast City, there can be no so odd a Conceit or Design, whereunto some Assistance may not be found, which in the thin, scattered way of Habitation may not be.

11. As for the Increase of People by Generation,

I see no great difference from either of the two states, for the same may be hindred or promoted in either, from the same Causes.

12. As to the Plague,

It is to be remembred that one time with another, a Plague happeneth in London once in 20 Years, or thereabouts; for in the last hundred Years, between the Years 1582 and 1682, there have been five great ''Plagues, viz. Anno'' 1592, 1603, 1625, 1636, and 1665. And it is also to |42| be remembred that the Plagues of London do commonly kill one fifth part of the Inhabitants. Now, if the whole People of England do double but in 360 Years, then the Annual Increase of the same is but 20000, and in 20 Years 400000. But if in the City of London there should be two Millions of People, (as there will be about 60 Years hence) then the Plague (killing one fifth of them, namely, 400000 once in 20 Years) will destroy as many in one Year, as the whole Nation can re-furnish in 20: And consequently the People of the Nation shall never Increase. But if the People of London shall be above 4 Millions (as in the first of our two Extravagant Suppositions is premised) then the People of