Any objection in respect of misnomer or misdescription of any person named in the indictment, or of any witness in the list of witnesses, must be stated before a jury has been sworn to try the case, and no such objection shall be admitted as ground for postponing any trial or for excluding any witness, unless the accused shall, at least four clear days before the second diet, give notice to the procurator fiscal of the district of the second diet where notice of trial is given for the sheriff court, or to the Crown Agent where notice of trial is given for the High Court, of his inability to discover who such person named in the indictment is, or to find such witness, and shall show that notwithstanding such intimation to the prosecutor he has not been furnished with such additional information as might enable him to ascertain who such person is, or to find such witness in sufficient time to recognise him before the trial, and where either of these things shall be shown the court shall give such remedy by postponement, adjournment, or otherwise, as shall seem just.