Madison County is bounded by beginning at a point on Big Black River, where the same crosses the center line in township twelve, range three, east; thence east to the old Choctaw boundary line; thence north on said boundary line to the center line of township twelve, range five, east; thence through the center of said township twelve, range five, east, to the range line between townships five and six, east; thence south on said range line to Pearl River; thence down said river, with its meanderings, to the line between townships six and seven, north; thence west on said township line to the basis meridian of the Choctaw survey; thence north on said meridian line to the line between townships seven and eight, north; thence west on said township line to the line between ranges two and three, west; thence north on said range line to Big Black River; thence up said river, with its meanderings, to the beginning.