Section 3
SEC. 3. Commencing with the fiscal year of the issue of these bonds and each succeeding year thereafter until said bonds shall be fully paid, there is hereby made a continuing annual appropriation to be paid out of any funds in the Insular Treasury not otherwise appropriated of such sums as may be necessary to meet the annual interest payments upon the provincial and municipal bonds issued in accordance with this Act, and to make up the sinking fund for the payment of said bonds. The sinking fund hereby created shall be annually adjusted in such manner that the total thereof at each annual due date of the bond issue shall be equal to the total of an annuity of one hundred ninety-three pesos and seventy-one centavos for each ten thousand pesos of bonds outstanding with interest at the rate of three and one-half per centum per annum. Such sinking fund shall be under the custody of the Insular Treasurer, who shall invest the same in such manner as the Secretary of Finance may approve in accordance with the law governing the investment of sinking funds, and shall charge all incidental expenses of such investment against said sinking fund.