
    No. 151.
    No. 152.
    No. 153.
    National Carbide Corp. v. Commissioner of Internal Revenue; Air Reduction Sales Co. v. Commissioner of Internal Revenue; and Pure Carbonic, Inc. v. Commissioner of Internal Revenue.
    
      Erwin N. Griswold, Boykin C. Wright, Edgar J. Goodrich and John A. Wilson for petitioners.
    
      Solicitor General Perlman, Assistant Attorney General Caudle and Hilbert P. Zarky for respondent.
   C. A. 2d Cir. Certiorari granted.

Reported below: 167 F. 2d 304.  