Mo. Rev. Stat. § 46.114: Mercer.

Beginning at the southeast corner of section nine, township sixty-three, range twenty-two, west; thence north with the subdivisional lines to the north boundary of the state; thence west with said boundary to the line dividing ranges twenty-five and twenty-six; thence south with said range line to the southwest corner of section seven of township sixty-three, range twenty-five, west; thence east with the subdivisional lines to the place of beginning.