SINKING FUND.
Section 7
SEC. 7. SINKING FUND.—A sinking fund shall be established in such manner that the total annual contribution thereto accrued at such rate of interest as may be determined by the Board of Administrators, shall be sufficient to redeem at maturity the bonds issued under this Decree. Such fund shall be under the custody of the Treasury of the FSDC which shall invest the same in such manner as the Board of Administrators may direct; charge all expenses of investment to said sinking fund, and credit the same with the interest on investment and other income belonging to it.