[11] _Doc. rel. Col. Hist. New York_, VI. 37, 38.

[12] _Doc. rel. Col. Hist. New York_, VI. 32-4.

[13] _Ibid._, VII. 907. This act was annually renewed. The
slave duty remained a chief source of revenue down to 1774.
Cf. _Report of Governor Tryon_, in _Doc. rel. Col. Hist. New
York_, VIII. 452.

[14] _Laws of New York, 1785-88_ (ed. 1886), ch. 68, p. 121.
Substantially the same act reappears in the revision of the
laws of 1788: _Ibid._, ch. 40, p. 676.

[15] The slave population of New York has been estimated as
follows:--

In 1698, 2,170. _Doc. rel. Col. Hist. New York_, IV. 420.
" 1703, 2,258. _N.Y. Col. MSS._, XLVIII.; cited in Hough,
_N.Y. Census, 1855_, Introd.
" 1712, 2,425. _Ibid._, LVII., LIX. (a partial census).
" 1723, 6,171. _Doc. rel. Col. Hist. New York_, V. 702.
" 1731, 7,743. _Ibid._, V. 929.
" 1737, 8,941. _Ibid._, VI. 133.
" 1746, 9,107. _Ibid._, VI. 392.
" 1749, 10,692. _Ibid._, VI. 550.
" 1756, 13,548. _London Doc._, XLIV. 123; cited in Hough,
as above.
" 1771, 19,863. _Ibid._, XLIV. 144; cited in Hough, as above.
" 1774, 21,149. _Ibid._, " " " " "
" 1786, 18,889. _Deeds in office Sec. of State_, XXII. 35.