Provided that if it appears to the Comptroller that an error has occurred in the accounts or computation he may refer the report for further consideration: Provided also that nothing in this section shall affect the right of objection and appeal provided in this Ordinance. Omissions and 61. Where it appears to the Comptroller that a person under-charges liable to tax has not been assessed, or has been charged on a to be rectified. less amount than he ought, or has received deductions or allowances to which he is not entitled the Comptroller may, within the year of assessment or within six years after the expiration thereof, assess such person at such amount or additional amount as according to his judgment ought to have been charged, and the provisions of this Ordinance as to notice of assessment, appeal, and other proceedings shall apply to such assessment or additional assessment and to the tax charged thereunder: provided that no such assessment shall be made for any year of assessment earlier than 1963 ; Comptroller or 62. The Comptroller or the Commissioners may by notice Commissioners in writing require any person to attend and give evidence with may require a respect to his income, and to produce all books or other docu- person to attend. ments in his custody or under his control relating to such income. List of persons 63. (1) After completing his assessments the Comptroller assessed. shall prepare or cause to be prepared a register of persons liable to pay tax and certify the same. (2) Such register (herein called the assessment lists) shall contain the names and addresses of the persons assessed to tax, the amount of the chargeable income of each person, the amount of the tax payable by him, and such other particulars as may be prescribed. Notices to be 64. The Comptroller shall cause to be served personally served on on or sent by post to each person whose name appears on the persons assessment lists a notice addressed to him at his usual place of assessed, abode or business stating the amount of tax payable by him, and informing him of his rights under section 66. Relief in respect 65. If any person who has paid the tax charged upon of error or him for any year alleges that the assessment and charge to tax mistake. for that year was excessive by reason of some error or mistake Income Tax. 1967. No. 21.