Beginning at the southwest corner of township one hundred forty-five north, range seventy-three west of the fifth principal meridian, a point on the eleventh standard parallel; thence east along the eleventh standard parallel to the southeast corner of township one hundred forty-five north, range sixty-eight west; thence north along the line between ranges sixty-seven and sixty-eight west to the northeast corner of township one hundred forty-eight north, range sixty-eight west, a point on the twelfth standard parallel; thence west along the twelfth standard parallel to the southeast corner of township one hundred forty-nine north, range sixty-eight west; thence continuing north along the line between ranges sixty-seven and sixty-eight west to the northeast corner of township one hundred fifty north, range sixty-eight west; thence west along the line between townships one hundred fifty and one hundred fifty-one north to the northwest corner of township one hundred fifty north, range seventy-three west; thence south along the line between ranges seventy-three and seventy-four west to the southwest corner of township one hundred forty-nine north, range seventy-three west, a point on the twelfth standard parallel; thence east along the twelfth standard parallel to the northwest corner of township one hundred forty-eight north, range seventy-three west; thence continuing south along the line between ranges seventy-three and seventy-four west to the point of beginning.