12. ~Restrictions in New York.~[6] The early ordinances of the Dutch, laying duties, generally of ten per cent, on slaves, probably proved burdensome to the trade, although this was not intentional.[7] The Biblical prohibition of slavery and the slave-trade, copied from New England codes into the Duke of York's Laws, had no practical application,[8] and the trade continued to be encouraged in the governors' instructions. In 1709 a duty of L3 was laid on Negroes from elsewhere than Africa.[9] This was aimed at West India slaves, and was prohibitive. By 1716 the duty on all slaves was L1 121/2_s._, which was probably a mere revenue figure.[10] In 1728 a duty of 40_s._ was laid, to be continued until 1737.[11] It proved restrictive, however, and on the "humble petition of the Merchants and Traders of the City of Bristol" was disallowed in 1735, as "greatly prejudicial to the Trade and Navigation of this Kingdom."[12] Governor Cosby was also reminded that no duties on slaves payable by the importer were to be laid. Later, in 1753, the 40_s._ duty was restored, but under the increased trade of those days was not felt.[13] No further restrictions seem to have been attempted until 1785, when the sale of slaves in the State was forbidden.[14] The chief element of restriction in this colony appears to have been the shrewd business sense of the traders, who never flooded the slave market, but kept a supply sufficient for the slowly growing demand. Between 1701 and 1726 only about 2,375 slaves were imported, and in 1774 the total slave population amounted to 21,149.[15] No restriction was ever put by New York on participation in the trade outside the colony, and in spite of national laws New York merchants continued to be engaged in this traffic even down to the Civil War.[16] Vermont, who withdrew from New York in 1777, in her first Constitution[17] declared slavery illegal, and in 1786 stopped by law the sale and transportation of slaves within her boundaries.[18]