
    National Gypsum Company, Respondent, v. Eljam Mason Supply, Inc., Appellant.
    Argued October 28, 1969;
    decided November 26, 1969.
    
      
      Eli Saul Cohn for appellant.
    
      Jacob F. Gottesman for respondent.
   Concur: Chief Judge Fuld and Judges Burke, Scileppi, Bergan, Breitel, Jasen and Gibson.  