Section 37
SEC. 37. Leases shall run for a period of not more than twenty-five years, but may be renewed for another period of not to exceed twenty-five years. In case the lessee shall have important improvements which, in the discretion of Secretary of Agriculture and Natural Resources, justify a renewal of the lease, a further renewal for an additional period not to exceed twenty-five years may be granted. It shall be an inherent and essential condition of the lease that the lessee shall not assign, encumber, or sublet his rights without the consent of the Secretary of Agriculture and Natural Resources, and that the violation of this condition shall avoid the contract: Provided, That nothing contained in this section shall be understood or construed to permit the assignment, encumbrance, or subletting of lands leased under this Act or under the former Public Land Act, to persons, corporations, or associations which, under this Act, are not authorized to lease public lands, unless otherwise provided by general or special legislation by the Legislature.