The Attorney General and Messrs. P. J. Farrell, of Washington, D. C., Union C. De Ford, of Youngstown, Ohio, and T. H. Hogsett, of Cleveland, Ohio, for appellants United States and others.

Messrs. Douglass D. Storey, of Harrisburg, Pa., and Union C. De Ford, of Youngstown, Ohio (Messrs. Hause, Evans & Baker, of Harrisburg, Pa., and Harrington, De Ford, Huxley & Smith, of Youngstown, Ohio, of counsel), for appellant Pennsylvania-Ohio Power & Light Co.

Messrs. Thomas H. Hogsett, of Cleveland, Ohio, and Agnew Hice, of Beaver, Pa., for appellant Steubenville, E. L. & B. V. Traction Co.

Mr. P. J. Farrell, of Washington, D. C., for appellant Interstate Commerce Commission.

Messrs. Edmond H. Moore, John J. Boyle, and Moore, Barnum & Hammond, all of Youngstown, Ohio, for Village of Hubbard.

Messrs. Charles Boyd and George D. Ingram, City Sol., both of Wellsville, Ohio, for appellant City of Wellsville.

Harry Brokaw, City Sol., of East Liverpool, Ohio, amicus curiae.

Mr. Justice BRANDEIS delivered the opinion of the Court.