No. 21. Income Tax. 1967. in the return or statement made by him for the purposes of the assessment, he may, at any time not later that six years after the end of the year of assessment, apply in writing to the Comp- troller for relief: Provided that no relief shall be given under this section in respect of an error or mistake as to the basis on which the liability of the applicant ought to have been computed where the return or statement was in fact made on the basis or in accordance with the practice generally prevailing at the time when the return or statement was made: And further provided that no relief under this section shall be given for any year of assessment earlier than the year, 1963. PART X. OBJECTIONS AND APPEALS. 66. (1) If any person disputes the, assessment made by Objections and the Comptroller he may apply within twenty-one days of the appeals. date of the service of the notice of assessment to the Comp- troller by notice of appeal in writing to have the assessment de- termined by the Commissioners. Such application shall state precisely the grounds of his objection to the assessment. (2) On receipt of a notice of appeal the Comptroller or the Commissioners may require the person concerned to fur- nish such particulars as he or they may deem necessary with respect to the income of the person assessed and to produce all books or other documents in his custody or under his control relating to such income and may summon any person who they think is able to give evidence respecting the assessment, to attend before them, and may examine such person (except the clerk, agent, servant or other person confidentially employed in the affairs of the person to be charged) on oath or otherwise. (3) When the appellant agrees with the Comptroller or when in the absence of agreement the appeal is determined by the Commissioners the entry in the assessment list shall be amended as necessary and such assessment shall stand as the amount assessed and charged. 67. (1) Every person appealing shall attend before the Procedure Commissioners in person at the time fixed for the hearing of at appeals. the appeal unless he is non-resident in the Colony at the time or is prevented from so appearing by reason of illness or other cause shown to the satisfaction of the Commissioners. (2) Either party to an appeal may be represented by counsel, a solicitor or other agent.