
    No. 894.
    Wisconsin et al. v. Minnesota Mining & Manufacturing Co.
    May 20, 1940.
    
      Mr. Harold H. Persons for petitioners.
    
      Messrs. Frederick J. Miller, John L. Connolly, and G. Burgess Ela for respondent.
   Petition for writ of certiorari to the Supreme Court of Wisconsin granted.  