Section 5
SEC. 5. A standing annual appropriation is hereby made out of the general funds in the Insular Treasury, not otherwise appropriated, of such sums as may be necessary to provide for the sinking fund created in the next preceding section hereof, for the interest on the bonds issued by virtue of this Act and for the expenses incidental to the investment of the sinking fund. A further appropriation is hereby made out of any funds in the Insular Treasury, not otherwise appropriated, of a sufficient sum to cover the expenses of the issue and .sale of the bonds issued by virtue of this Act: Provided, That the Metropolitan Water District shall reimburse the Government for such expenses within thirty days after the receipt of a statement of the same from the Insular Treasurer.