The county of Cass is bounded as follows: Commencing at the southwest corner of township ten, north, range nine, east; thence east to the eastern boundary line of the State of Nebraska as established by the Iowa-Nebraska Boundary Compact of 1943; thence north along said eastern boundary line until it intersects the Platte River; thence up said Platte River until it intersects the line dividing townships twelve and thirteen, north, the last time; thence west to the northwest corner of township twelve, north, range ten, east; thence south two miles; thence west six miles; and thence south to the place of beginning.