0,000.

9. After twenty-eight years from the first adoption, this plan of
gradual emancipation will first begin to manifest its effects, by the
complete emancipation of one twenty-eighth part of the post-nati free
born during that period each succeeding year, for twenty-eight years
more; their numbers will be, 277500/28, or 9,910.

These will be all females.

10. It being admitted that the negroes double every thirty years, the
supposition that in forty-five years, their numbers will be half as many
more as in thirty, will not be very erroneous, if so, the whole race of
them at that period will be 900,000.

11. Their numbers will stand thus:

Ante-nati, 60,000

Post-nati, 840,000

---- 900,000.

12. After twenty-eight years are past, the number of slaves born must
continually diminish. Suppose their number born in the last 17 years, to
be one-fourth as many as those born in the preceding twelve years, they
will be 52500/4, or 13,125.

13. The slaves in Virginia in forty-five years will then be,
ante-nati, 60,000

Post-nati males born in the first
sixteen years, 120,000

Ditto, born in the next
twelve years 52,500

Ditto, born in the last
seventeen years, 13,125

---- 245,625.

At this period the emancipation of males will begin.

14. But after twenty eight years it has been shewn that 9,910 negroes
will annually arrive at the age of emancipation, their whole number in
forty-five years will be 168,470.

15. The state of the negroes at the end of 45 years, will then be,
slaves, 245,625

Post-nati fully emancipated
(females), 168,470

Post-nati not
emancipated, 485,905

---- 900,000.

16. In sixty years the whole number of negroes will be

1,200,000.

17. At that period the whole of the present race will be extinct; and we
may also infer that one half of those born in the first thirty years
will be also extinct; the number of slaves born in that period has been
shewn, (prop. 7.) to be 172,500, the number of these then living will be
172,500/2, or 86,250.

18. One half of the post-nati free born, during that period, being now
fully emancipated, may be likewise presumed to be extinct; their numbers
(prop. 8.) will be, 277,500/2, or 138,750.

19. The state of the negroes at the end of sixty years, will therefor