The county of Barton is bounded as follows: Commencing where the east line of range eleven west intersects the third standard parallel; thence south on said line, to the southeast corner of township twenty-one south, of range eleven west; thence west on the south line of said township, to the southwest corner of township twenty-one south, of range fifteen west; thence north on the range line, to the third standard parallel; thence east on said parallel, to the place of beginning.