§ "That, for the purposes of any Act of the present Session to amend the House of Commons Members' Fund Act, 1939, the salary or pension of a Member from which deductions are to be made under the said Act of 1939, as amended by the first-mentioned Act, shall not be treated for any of the purposes of the Income Tax Acts as reduced by reason of any increase attributable to the provisions of the said Act of the present Session in the amount of the said deductions, and a Member shall not be entitled to any allowance, deduction or relief under any provision of the Income Tax Acts by reason of such increase and his income shall not be regarded as thereby diminished."