This state and its people consent to the provisions of the act of congress, approved June 15, 1926, providing for such exchanges and the governor and other state officers mentioned in said act are hereby authorized to execute the necessary instrument or instruments to effect the exchange of lands therein provided for with the government of the United States; provided that in the determination of values of the lands now owned by the state of New Mexico, the value of the lands, the timber thereon and mineral rights pertaining thereto shall control the determination of value. The legislature may enact laws for the carrying out of the provisions hereof in accordance herewith. (As added November 8, 1932.)