jury of the county of Alexandria, at the March term, 1802, presented the
domestic slaves trade as a grievance, and said, "We consider these
grievances demanding _legislative_ redress." Jan. 19, 1829, Mr.
Alexander, of Virginia, presented a representation of the grand jury in
the city of Washington, remonstrating against "any measure for the
abolition of slavery within said District, unless accompanied by
measures for the removal of the emancipated from the same;" thus, not
only conceding the power to emancipate slaves, but affirming an
additional power, that of _excluding them when free_. Journal H. R.
1828-9, p. 174.

4. THIS POWER HAS BEEN CONCEDED BY STATE LEGISLATURES. In 1828 the
Legislature of Pennsylvania instructed their Senators in Congress "to
procure, if practicable, the passage of a law to abolish slavery in the
District of Columbia." Jan. 28, 1829, the House of Assembly of New York
passed a resolution, that their "Senators in Congress be instructed to
make every possible exertion to effect the passage of a law for the
abolition of Slavery in the District of Columbia." In February, 1837,
the Senate of Massachusetts "Resolved, That Congress having exclusive
legislation in the District of Columbia, possess the right to abolish
slavery and the slave trade therein." The House of Representatives
passed the following resolution at the same session: "Resolved, That
Congress having exclusive legislation in the District of Columbia,
possess the right to abolish slavery in said District." November 1,
1837, the Legislature of Vermont, "Resolved that Congress have the full
power by the constitution to abolish slavery and the slave trade in the
District of Columbia, and in the territories."

In May, 1838, the Legislature of Connecticut passed a resolution
asserting the power of Congress to abolish slavery in the District