The United States agree to have surveys made of the country ceded by the Ioways in article first in the same manner that the public lands are surveyed, and as soon as it can conveniently be done; and the President, after the surveys shall have been made and approved, shall proceed to offer said surveyed land for sale, at public auction, being governed therein by the laws of the United States respecting sales of public lands; and such of said lands as may not be sold at public sales, shall be subject to private entry in the manner that private entries are made of United States land; and all the land remaining unsold after being for three years subject to private entry at the minimum Government price, may by act of Congress, be graduated and reduced in price until the whole is disposed of, proper regard being had, in making such reduction, to the interests of the Ioways and the speedy settlement of the country. Until after the said land shall have been surveyed, and the surveys approved, no white persons or citizens shall be permitted to make thereon any location or settlement; and the provisions of the act of Congress, approved on the third day of March, one thousand eight hundred and seven, relating to lands ceded to the United States, shall, so far as they are applicable, be extended over the lands herein ceded. ARTICLE 4 It being understood that the present division-line between the Ioways and the Sacs and Foxes of Missouri, as run by Isaac McCoy, will, when the surveys are made, run diagonally through many of the sections, cutting them into fractions; it is agreed that the sections thus cut by said line, commencing at the junction of the Wolf with the Missouri River, shall be deemed and taken as part of the land herein before ceded and directed to be sold for the benefit of the Ioways, until the quantity thus taken, including the before-recited reservation, and all the full sections north of said line, shall amount to two hundred sections of land. And should the Sacs and Foxes of Missouri consent to a change of their residence and be so located by the United States as to occupy any portion of the land herein ceded and directed to be sold for the benefit of the Ioways, west of the tract herein reserved, the Ioways hereby agree to the same, and consent to such an arrangement, upon the condition that a quantity of land equal to that which may be thus occupied by the Sacs and Foxes, and of as good quality, shall be set apart for them out of the country now occupied by the last-named tribe, contiguous to said division-line, and sold for their benefit as hereinbefore provided. ARTICLE 5