48. (1) The Commissioner of State Purchase shall be appointed by the Government. (2) The Commissioner of State Purchase shall, in respect of the whole of Bangladesh, exercise the powers conferred and perform the duties imposed on him by this Act and by such rules as may be made under this Act. He shall also exercise general powers of superintendents and control over the Director of Land Records and Surveys and through him over all other officers subordinate to him. (3) The Director of Land Records and Surveys shall exercise such powers and perform such duties of a Revenue-officer under this Act or any rules made thereunder as may be conferred or imposed on him. (4) The Government may appoint one or more persons who has or have exercised the powers of a District Judge or a Subordinate Judge to be a Special Judge or Special Judges for the purposes of hearing appeals which may be preferred to him or them under the provisions of this Act and of inquiring into disputes as to the title to receive any compensation under a Compensation Assessment-roll finally published under section 42 or as to the apportionment of any compensation referred to him under section 60.