Beginning at the point where the boundary line between the states of North Dakota and Montana intersects the line between townships one hundred fifty-nine and one hundred sixty north; thence east along the line between townships one hundred fifty-nine and one hundred sixty north to the southeast corner of township one hundred sixty north, range ninety-five west of the fifth principal meridian; thence north along the line between ranges ninety-four and ninety-five west to the northeast corner of township one hundred sixty north, range ninety-five west, a point on the fifteenth standard parallel; thence west along the fifteenth standard parallel to the southeast corner of township one hundred sixty-one north, range ninety-five west; thence     continuing north along the line between ranges ninety-four and ninety-five west to the international boundary line between the United States and Canada; thence west along the international boundary line to the boundary line between the states of North Dakota and Montana; thence south along the boundary line between the states of North Dakota and Montana to the point of beginning.