74. (1) In any suit or other legal proceedings in which the relief sought includes alteration or rectification of the register, the Registrar shall have the right to appear and be heard, and shall appear if so directed by the tribunal. (2) Unless the tribunal otherwise directs, the Registrar may, in lieu of appearing, submit a statement in writing signed by him, giving such particulars as he thinks proper of the proceedings before him relating to the matter in issue, or of the grounds of any decision given by him affecting it, or of the practice of the Trade Marks Registry in like cases, or of other matters relevant to the issues and within his knowledge as Registrar, and such statement shall be evidence in the suit or other proceeding.