Court of Appeal to usurp the statutory functions of the Chief Judge of the Federal High Court. The powers donated or vested by Sections 1(2)(a) and 19(3) & (4) of the Federal High Court can only be exercised within the limits prescribed by statute (SANUSI v. AYOOLA (1992) 9 NWLR (pt. 265) 275 at 293) and only by the authority or person to whom they are donated or vested. An exercise of any statutory power either outside the limits prescribed or by the person or authority not designated to exercise the power will certainly be ultra vires, null and void. My Lords, I now come back to the reason the lower Court gave for the inapplicability of the principle laid down by this Court in OUR LINE LTD v. SCC (NIG) LTD (supra) in which the case of OGBUNYINYA v. OKUDO (supra) was cited with approval. The lower Court acknowledged that the 30