During the time of construction of the Railway the interest on the Bonds and on any advances made by the Contractors shall be paid from the proceeds of the Loan. The accruing interest from any proceeds of the Loan not used during the period of construction, and the earnings derived by the Corporation from the working of any sections of the Railway as they are built, are to be used to make up the amount required for the payment of the said interest, and if any deficiency remains it is to be met from the proceeds of the Loan. When the construction of the Railway is wholly completed, the interest on the Bonds is to be paid from the income or earnings of the Railway received by the Corporation, in such manner and on such dates as may be provided for in the Detailed Agreement provided for in Article 17 of this Agreement. If, at any time, the earnings of the Railway, together with the funds available from the proceeds of the Loan, are not sufficient to meet the interest on the Bonds and the repayment of the capital in accordance with the Amortization Schedule to be attached to the Detailed Agreement, the Government of the Republic of China, in approving of this Agreement, unconditionally undertakes and promises to pay the principal of the Loan and the interest of the Loan on the due dates to be fixed therefor in the Detailed Agreement provided for in Article 17 of this Agreement. ARTICLE V The bonds shall be Bonds of the Government of the Republic of China. ARTICLE VI The Loan shall be issued to the public in two or more series of Bonds, the first issue to be made to the amount of from one to two million pounds sterling as soon as possible after the signature of the Detailed Agreement referred to in Article 17 of this Agreement. The issue price of the Bonds shall be fixed by the Corporation and the Contractors sometime before the issue, taking the last price of similar Bonds as a basis for fixing the market price. The price payable to the Corporation shall be the actual rate of issue to the public less a sufficient amount to cover the cost of stamps on the Bonds in the various countries of issue, provided always that at least fifty per cent of the Bonds shall be issued in England, plus floatation charges of four per cent retainable by the Contractors (that is to say, a charge of four pounds for every one hundred pound Bond issued). After the Detailed Agreement referred to in Article 17 is settled, and pending the issue of the Loan, the Contractors shall deposit the sum of fifty thousand pounds with the issuing Bank to the Canton Chungking Railway account, and this amount can be drawn on by the Corporation for survey and other necessary expenses authorized by the Managing Director against certificates signed by the Chief Accountant and Chief Engineer. This sum of fifty thousand pounds shall bear interest at the rate of five per cent per annum and shall be refunded out of the proceeds of the Loan. ARTICLE VII