Whenever said Commission has agreed with the owner of any such land or property as to the purchase price thereof, or the damage for the construction of the inland waterway has finally been determined in any condemnation proceeding necessary to secure such land or property, the said Commission is hereby authorized and directed to pay all of said sums and other expenses incident thereto by proper warrant upon the sum which may be appropriated for said purpose, and all such sums shall constitute and remain a fixed and valid claim against the State of North Carolina until paid and satisfied in full. (1931, c. 2, s. 4.)