
    No. 726.
    Mitchell et al. v. Donovan, Secretary of State of Minnesota, et al.
    
      Lynn S. Castner and Melvin L. Wulf for appellants. Douglas M. Head, Attorney General of Minnesota, pro se, Arne L. Schoeller, Chief Deputy Attorney General, and John R. Kenefick and James M. Kelley, Special Assistant Attorneys General, for appellees.
   Appeal from D. C. Minn. Probable jurisdiction noted.

Mr. Justice Harlan is of the opinion that further consideration of question of jurisdiction should be postponed to hearing on the merits.  