Section 111 - Financial participation(a) The State Treasurer shall establish in the State Treasury a State Public Welfare Fund which shall include all funds made available for the purposes of this chapter or of Chapter 5 of this title by the State, the several counties, the federal government or any other source. Within this State Public Welfare Fund there shall be established such separate accounts as the State Treasurer and the State Auditor of Accounts may deem necessary or desirable.(b) The State Treasurer shall pay from the State Public Welfare Fund the amounts requested by the Department for the purposes of this chapter or of Chapter 5 of this title; provided, that such amount requested is not in excess of the balance remaining in the State Public Welfare Fund plus authorized advances.(c) All expenditures of the Department shall be paid by check drawn by the State Treasurer except as hereinafter provided. Such expenditures shall be made on the basis of prescribed invoice and payroll forms preapproved by designated officials of the Department; copies of such approved invoice and payroll forms to be transmitted to the Department of Finance for preaudit. (d) Certain expenditures, due to the responsibilities of the Department, are of an emergency nature. Such expenditures shall be made by the Department over the signature of an authorized official from a revolving fund in an amount to be agreed on by the Department and the State Treasurer and which shall be drawn from the State Public Welfare Fund and be deposited in a fund of the State to the credit of the Department of Public Welfare. 31 Del. C. 1953, § 121; 50 Del. Laws, c. 220, § 1; 63 Del. Laws, c. 142, §54; 64 Del. Laws, c. 108, §9.;