
    Krol, et al., Appellants, v. Insurance Company of North America.
    
      Argued June 10, 1975.
    
      Stephen A. Cozen, with him Francis E. Marshall, and Orlofsky, Cozen & Begier, and Marshall, Dennehey & Warner, for appellants; Theodore W. Flowers, with him Francis P . Devine, III, and White and Williams, for appellee.
   Judgment affirmed.  