
    McKay Engineering and Construction Company, Appellant, v. Sanitary District of Chicago, Appellee.
    Gen. No. 44,110.
    
      opinion filed June 21, 1948;
    released for publication September 9, 1948.
    John J. Dowdle and Eugene P. Kealy, for appellant; Martin Ward, of counsel; Ernst Buehler, Lawrence J. Fenlon and Bichard B. Young, for appellee.
   Opinion by Not to be published in full.

Justice Scanlan.  