
    Trembelas et al. v. Philadelphia, Appellant.
    Argued September 21, 1971.
    
      John Mattioni, Deputy City Solicitor, with him Charles Kov-ler, Assistant City Solicitor, and Levy Anderson, City Solicitor, for appellant; Harry B. Nixon, with him A. Groh Schneider, and Schneider & Nixon, for appellees.
   Order affirmed.  