Mo. Rev. Stat. § 46.143: St. Francois.

Beginning at the southwest corner of section one, township thirty-four, north, range eight, east, on the boundary line of Ste. Genevieve County; thence with the western boundary of Ste. Genevieve County, as set out in section 46.144, to the northwest corner thereof, being at the northeast corner of township thirty-eight, range five, east; thence on a direct line to the southwest corner of section fifteen, township thirty-eight, range four, east; thence west with the section line to the middle of the main channel of Big River; thence down Big River to where it strikes the range line dividing ranges three and four, east; thence south with said range line to the southwest corner of section eighteen, township thirty-four, range four, east; thence east with the subdivisional line to the southwest corner of section fifteen, township thirty-four, range eight, east; thence in a direct line to the place of beginning.