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462 to say, that the People doubled but in about 1200 Years. As for Example: Suppose there be 600 people, of which let a fiftieth part dye per Annum, then there shall dye 12 per Annum; and if the Births be as 24 to 23, then the Increase of the People shall be somewhat above half a Man per Annum, and consequently the supposed Number of 600, cannot be doubled but in 1126 Years, which to reckon in round Numbers, and for that the afore-mentioned Fractions were not exact, we had rather call 1200.

There are also other good Observations, That even in the Countrey, one in about 30, or 32 per Annum |13| hath dyed, and that there have been five Births for four Burials. Now, according to this Doctrine, 20 will dye per Annum out of the above 600, and 25 will be Born, so as the Increase will be 5, which is a hundred and twentieth part of the said 600. So as we have two fair Computations, differing from each other as one to ten; and there are also several other good Observations for other Measures.

I might here Insert, That although the Births in this last Computation be 25 of 600, or a Twenty fourth part of the People; yet that in Natural possibility, they may be near thrice as many, and near 75. For that by some late Observations, the Teeming Females between 15 and 44, are about 180 of the said 600, and the Males of between 18 and 59, are about 180 also, and that every Teeming Woman can bear a Child |14| once in two Years; from all which it is plain, that the Births may be 90. (and abating 15 for Sickness, Young Abortions, and Natural Barrenness) there may remain 75 Births, which is an Eighth of the People; which by some Observations we have found to be but a two and thirtieth part, or but a quarter of what is thus shewn to be Naturally possible. Now, according to this Reckoning, if the Births may be 75 of 600, and the Burials but 15, then the Annual Increase of the People will be 60; and so the said 600 People may double in 10 Years, which differs yet more from 1200 above-mentioned. Now, to get out of this Difficulty, and to temper those vast disagreements, I took the Medium of 50