Section 683, R.S. 2364, related to minimum price for sale of public lands. Section 684, R.S. 2358, related to authorization of President to cause public lands to be offered for sale. Section 685, R.S. 2359, related to advertising of sale of public lands. Section 686, act Jan. 12, 1877, ch. 18, 2, 19 Stat. 221, related to publication of all executive proclamations relating to sale of public lands. Section 687, R.S. 2360, related to duration of sale of public lands.