_Purchase of site for State capital._--The cession by the treaty of October 27, 1805, of the section of land at Southwest Point was secured upon the theory that the State of Tennessee would find Kingston a convenient and desirable place for the establishment of the State capital. A subsequent change of circumstances and public sentiment, however, caused it to be located seven years later at Nashville. _Boundaries surveyed._--On the 11th of July, 1806, the Secretary of War notified Return J. Meigs of his appointment as commissioner to superintend the running and marking of the line "from the junction of the fork at the head of which Fort Nash stood with the main south fork of Duck River to a point on the Tennessee River bank opposite the mouth of Hiwassee River." He was also to superintend the survey of the lines of the reserved tracts agreeably to the treaty of October 25, 1805. He was directed to appoint a surveyor, but before running the line from Duck to Tennessee Rivers above described, to have him survey and mark the lines of the 3-mile tract reserved opposite to and below the mouth of Hiwassee, and also, when completed, to designate the most suitable site for the military post, factory, and agency, each site to be 300 feet square and 40 rods distant from the others. Commissioner Meigs followed the letter of his instructions and caused the lines to be surveyed in accordance therewith. The line from Duck River to the mouth of Hiwassee was begun on the 9th and finished on the 26th of October, 1806. The point of departure at the west end of the boundary line was a red elm tree, trimmed and topped, standing on the extreme point of land formed by the confluence of that branch of Duck River at the head of which Fort Nash stood, with the main south fork of the river. The eastern terminus of the line was a mulberry tree on the north bank of Tennessee River opposite the mouth of Hiwassee River, 73 miles and 166 poles from the beginning.[155] CONTROVERSY CONCERNING "DOUBLEHEAD" TRACT. Colonel Martin, who was employed by Commissioner Meigs, also surveyed under the latter's direction during the same month the four small reserved tracts described in the treaty of October 25, 1805.[155] One of these afterwards produced much controversy. The language of the treaty called for three square miles on the north bank of Tennessee River, _opposite to and below_ the mouth of Hiwassee River. Colonel Meigs, who was one of the commissioners who negotiated the treaty and was therefore entirely familiar with its intent, caused this tract to be surveyed adjoining the main line of cession, extending from Duck River to the mouth of Hiwassee and north of that line, which placed the tract opposite to and _above_ the mouth of Hiwassee, instead of "opposite to and below" the mouth of that river.[156]