Per Curiam:
The judgment is affirmed. (1) South Carolina Highway Dept. v. Barnwell Bros., 303 U. S. 177; Maurer v. Hamilton, 309 U. S. 598; Philadelphia-Detroit Lines, Inc. v. Simpson, 312 U. S. 655; Darnall Trucking Co. v. Simpson, 313 U. S. 549; (2) Sproles v. Binford, 286 U. S. 374, 395-96.