Section 10. Appropriation.--The sum of twenty-five thousand dollars ($25,000), or so much thereof as may be necessary, is hereby specifically appropriated from the General Fund for the purpose of providing such bonds, for the payment of the cost of advertising the same, and for all other costs and expenses in connection with the issue, sale and registration of said bonds. Payments from said appropriation shall be made by requisition of the Auditor General, after approval of vouchers by the Governor, Auditor General and State Treasurer, and repayment of the sum or sums hereby appropriated shall be made to the General Fund from the Toll Bridge Fund.