JUDGMENT : The Judgment of the Court was delivered by Shah, J. 1. Two questions were referred by the Tribunal to the High Court of Allahabad under Section 66(1) of the Indian Income Tax Act, 1922. We are concerned with the first question alone, because the second has been answered in favour of the assessee and no appeal has been fixed by the revenue against the decision on that question. The question which was decided against the assessee reads as follows: 'Whether the interest of securities issued by the erstwhile Indian States of Travancore and Cochin is assessable under Section 8 of the Act or under Section 12 of the Act'. 2. There is no dispute that the securities held by the appellant Bank were issued by the Indian State of Travancore and Cochin sometime before August 15, 1947. The securities were 'tax free'. Under Section 8 of the Income Tax Act, 1922 the tax shall be payable by an assessee under the head 'Interest on securities' in respect of the interest receivable by him on any security of the Central Government or of the state Government or on debentures or other securities for money issued by or on behalf of a local authority or a Company. The third proviso to that section provides: 'Provided further that the income tax payable on the interest receivable on any security of a State Government issued income tax free shall be payable by the State Government'. 3. The appellant Bank contended that the securities of the Indian State of Travancore and Cochin were State Government securities and relied upon the definition of State Government in Section 3(60) of the General Clauses Act. The High Court rejected the contention holding that the securities were 'Government securities' within the meaning of Section 3(24) of the General Clauses Act and on the express terms of that clause, Government securities did not include securities of the Government of any Part B State where reference was made in any Act or Regulation before the commencement of the Constitution to such securities. But Section 8 does not use the expression 'Government securities'. It uses the expression securities of the State Government and there is no reason to substitute in a taxing statute an expression which the Legislature has used by another expression which it has not used. But Section 8 does not use the expression 'Government securities'. It uses the expression securities of the State Government and there is no reason to substitute in a taxing statute an expression which the Legislature has used by another expression which it has not used. The question is covered by a judgment of this Court in Commissioner Income Tax v. H.E.H. Mir Osman Ali Bahadur, 59 ITR 666 at 679, where this Court held, in dealing with the claim of an assessee to exemption from liability to pay tax in respect of the Hyderabad State securities issued before the Constitution was enacted, that the assessee was entitled under Section 8, 3rd proviso, to exemption from tax on interest of those securities. 4. The appeal is, therefore, be allowed and the answer recorded by the High Court on the first question discharged. The answer to the first question will be that the securities issued by the Indian State of Travancore and Cochin were assessable under Section 8 of the Income Tax Act, 1922. The Commissioner will pay the costs of the appellant Bank in this Court and in the High Court.