Beginning at the southwest corner of township one hundred twenty-nine north, range seventy-three west of the fifth principal meridian, a point on the seventh standard parallel; thence east along the seventh standard parallel to the southeast corner of township one hundred twenty-nine north, range sixty-seven west; thence north along the line between ranges sixty-six and sixty-seven west to the northeast corner of township one hundred thirty-two north, range sixty-seven west, a point on the eighth standard parallel; thence west along the eighth standard parallel to the northwest corner of township one hundred thirty-two north, range seventy-three west; thence south along the line between ranges seventy-three and seventy-four west to the point of beginning.