The county of Logan is bounded as follows: Commencing at the southeast corner of township seventeen, north, of range twenty-six, west, of the sixth principal meridian; running thence west along the north line of Lincoln County to the southwest corner of township seventeen, north, range twenty-nine, west; thence north to the northwest corner of township twenty, north, range twenty-nine, west; thence east to the northeast corner of township twenty, north, range twenty-six, west; thence south along the west line of Custer County to the point of beginning.