
    427 A.2d 249
    Commonwealth v. Johnson, Appellant.
    Submitted December 6, 1979.
    Lawrence A. Ruth, for appellant;
    John J. Burfete, Assistant District Attorney, for Commonwealth, appellee.
    Before BROSKY, WICKERSHAM and ROBERTS, JJ.
    
    
      
       Justice Samuel J. Roberts of the Supreme Court of Pennsylvania, is sitting by designation.
    
   The order of the lower court is affirmed.  