
    Interstate Optical Company, appellant, v. Illinois State Society of Optometrists and the Chicago Optometric Society, defendants. Illinois State Society of Optometrists and R. F. T. Lee, appellees.
    Gen. No. 32,799.
    Heard in the third division of this court for the first district at the June term, 1928.
    Opinion filed January 30, 1929.
    Bernard J. Brown and Jesse H. Brown, for appellant; Jesse H. Brown, of counsel. Nicholson, Crandall & Snyder, for appellees; John T. Chadwell and Francis G. Rearick, of counsel.
   Mr. Presiding Justice Holdom

delivered the opinion of the court.  