Per Curiam:
Decree affirmed by an equally divided Court.
Mr. Chief Jus*592tice Hughes took no part in the consideration or decision of this case.
Solicitor General Biggs and Mr. Erwin N. Griswold, with whom Messrs. Sewall Key and Francis H. Horan were on the brief, for petitioner. Mr. John W. Davis, with whom Messrs. Wm. R. Perkins, Forrest Hyde, H. H. Shelton,., and Marion N. Fisher were on the brief, for respondents.