Decree affirmed. (1) Texas & New Orleans R. Co. v. Sabine Tram Co., 227 U.S. 111; Baltimore & Ohio S. W. R. Co. v. Settle, 260 U.S. 166, 170, 173, 174; United States v. Erie R. Co., 280 U.S. 98, 101, 102; (2) Buck v. Kuykendall, 267 U.S. 307, 315, 316; Bush Co. v. Maloy, 267 U.S. 317, 324, 325; Sprout v. South Bend, 277 U.S. 163, 169-171; Bradley v. Public Utilities Comm’n, ante, 92, 95. Mr. Elbert Hooper, Assistant Attorney General of Texas, with whom