Discharge of summons in case of doubt as to capacity to act effectively as a juror
52. Where it appears to the appropriate officer, in the case of a person attending in pursuance of a summons under section 3 of the Act of 1887, that on account of physical disability or insufficient understanding of English there is doubt as to his capacity to act effectively as a juror, the person may be brought before the coroner, who shall determine whether or not he should act as a juror and, if not, shall discharge the summons.