
    Commonwealth ex rel. Mathus, Appellant, v. Superintendent of State Correctional Institution at Graterford, Pennsylvania.
    Submitted March 24, 1975.
    
      Calvin S. Drayer, Jr., Assistant Public Defender, for appellant; Stewart J. Greenleaf, Assistant District Attorney, William T. Nicholas, First Assistant District Attorney, and Milton O. Moss, District Attorney, for appellee.
   Order affirmed.  