opinion: March 4, 1957.
  No. 265.
  United States v. American Freightways Co.
  Argued January 23, 1957.
  Decided March 4, 1957.
  Ralph S. Spritzer argued the cause for the United States. With him on the brief were Solicitor General Rankin, Assistant Attorney General Olney, Beatrice Rosenberg and Judson W. Bowles. Samuel Masia argued the cause for appellee. With him on the brief was Martin Werner.
  Per Curiam:
  The judgment is affirmed by an equally divided Court.