Mo. Rev. Stat. § 46.068: Cass.

Beginning in the middle of the main channel of Grand River, where the range line between ranges twenty-eight and twenty-nine intersects the same; thence north to the northeast corner of section thirty-six of township forty-four, range twenty-nine, west; thence west with the subdivisional lines to the southwest corner of section twenty-seven of township forty-four, range twenty-nine, west; thence north with the subdivisional lines to the northwest corner of section three of township forty-six, range twenty-nine, west; thence west with the township line between townships forty-six and forty-seven to the western boundary line of the state; thence south with said boundary line of the state to where the line between townships forty-two and forty-three intersects the same; thence east with said township line to the middle of the main channel of Grand River; thence down said river in the middle of the main channel thereof to the place of beginning.