Criminal Code (Cap. 9), article 614

614. The absence in any person of the necessary qualifications to serve as a juror, must be raised by the Attorney General or by the accused. It may also be submitted by the person himself or, if it is notorious, declared by the court. If, however, the absence of s uch qualifications is not so raised, submitted or declared, and the person is approved as fit to be sworn, no opposition can afterw ards be made on account of his want of qualifications. Benefit of exemption may not be claimed if not alleged before approval of juror.