(_c_) The proceeds of such direct or indirect taxes or any other funds as may be proposed by the German Government and accepted by the Committee of Guarantees in addition to or in substitution for the funds specified in (_a_) or (_b_) above. The assigned funds shall be paid to accounts to be opened in the name of the Committee and supervised by it, in gold or in foreign currency approved by the Committee. The equivalent of the 25 per cent levy referred to in Paragraph (_b_) shall be paid in German currency by the German Government to the exporter. The German Government shall notify to the Committee of Guarantees any proposed action which may tend to diminish the proceeds of any of the assigned funds, and shall, if the Committee demand it, substitute some other approved funds. The Committee of Guarantees shall be charged further with the duty of conducting on behalf of the Commission the examination provided for in Paragraph 12 (_b_) of Annex 2 to Part VIII. of the Treaty of Versailles, and of verifying on behalf of the said Commission, and if necessary of correcting, the amount declared by the German Government as the value of German exports for the purpose of the calculation of the sum payable in each year under Article 4 (2) and the amounts of the funds assigned under this Article to the service of the bonds. The Committee shall be entitled to take such measures as it may deem necessary for the proper discharge of its duties. The Committee of Guarantees is not authorised to interfere in German administration. 8. Germany shall on demand, subject to the prior approval of the Commission, provide such material and labour as any of the Allied Powers may require towards the restoration of the devastated areas of that Power, or to enable any Allied Power to proceed with the restoration or development of its industrial or economic life. The value of such material and labour shall be determined by a valuer appointed by Germany and a valuer appointed by the Power concerned, and, in default of agreement, by a referee nominated by the Commission. This provision as to valuation does not apply to deliveries under Annexes III., IV., V., and VI. to Part VIII. of the Treaty. 9. Germany shall take every necessary measure of legislative and administrative action to facilitate the operation of the German Reparation (Recovery) Act, 1921, in force in the United Kingdom, and of any similar legislation enacted by any Allied Power, so long as such legislation remains in force. Payments effected by the operation of such legislation shall be credited to Germany on account of the payment to be made by her under Article 4 (2). The equivalent in German currency shall be paid by the German Government to the exporter.