23. In rule 191 (objections to registration), for paragraph (3) substitute—
“(3) Before making any decision in the matter, the Registrar may require any person concerned to produce an affidavit or statutory declaration containing full particulars of any facts upon which that person seeks to rely; and the Registrar may, if he considers it to be necessary, require all persons concerned to appear before him for consideration of the matter; and upon such consideration, he shall make such order in the matter as he considers just.”