The county of Wichita is bounded as follows: Commencing at the intersection of the east line of range thirty-five west with the third standard parallel; thence south along range line, to its intersection with the fourth standard parallel; thence west along said fourth standard parallel, to where it is intersected by the east line of range thirty-nine west; thence north along range line, to its intersection with the third standard parallel; thence east, to place of beginning.