Subchapter II. Experiment Stations for Propagation of Trees, Shrubs, Vines, and Vegetables 7 U.S. Code §387. Station for semi-arid or dry-land regions; establishment 7 U.S. Code §387a. Authorization of appropriations 7 U.S. Code §388. Station for southern Great Plains area; establishment 7 U.S. Code §388a. Authorization of appropriations 7 U.S. Code §389. Transfer of certain dry land and irrigation field stations to States 7 U.S. Code §389a. Conditions of transfer of dry land and irrigation field stations; reservation of mineral rights