Hereafter when any appropriation is made to any department, bureau, commission, board of trustees, overseers, managers, and other persons in charge of institutions owned and controlled by the State, in whole or in part, and which are known as State and semi-State institutions, or other branch of the government of this Commonwealth, which is intended for expenses of such a nature as to make it impracticable for said department, bureau, commission, board of trustees, overseers, managers, and other persons in charge of institutions owned and controlled by the State, in whole or in part, and which are known as State and semi-State institutions, or other branch of the government of the Commonwealth, to file with the Auditor General itemized receipts or vouchers prior to the advance by the accounting officers of funds sufficient to meet such expenses, it shall be lawful for such department, bureau, commission, board of trustees, overseers, managers, and other persons in charge of institutions owned and controlled by the State, in whole or in part, and which are known as State and semi-State institutions, or other branch of the State Government, to make requisition upon the Auditor General, from time to time, for such sum or sums of the appropriation as may be necessary to meet such expenses; and the Auditor General, after the approval of said requisition by himself and the State Treasurer, shall draw his warrant upon the latter officer for such sum or sums, to be paid out of the appropriation, as in the discretion of the Auditor General may be necessary. Said department, bureau, commission, board of trustees, overseers, managers, and other persons in charge of institutions owned and controlled by the State, in whole or in part, and which are known as State and semi-State institutions, or other branch of the State Government, shall, whenever required by the Auditor General, file specifically itemized vouchers, in such form as may be prescribed by him, accounting for all money expended out of said advance. All balances in the hands of said department, bureau, commission, board of trustees, overseers, managers, and other persons in charge of institutions owned and controlled by the State, in whole or in part, and which are known as State and semi-State institutions, or other branch of the State Government, at the end of the appropriation period for which expenses have not been incurred, shall be returned to the State Treasurer before any advance is made out of any succeeding appropriation for the same purpose: Provided, however, That the funds so advanced shall be deposited, in the name of the Commonwealth of Pennsylvania, by the officer or institution to whom or which said advancement is made, in a depository approved by the Board of Revenue Commissioners, and the name of such bank or depository certified to the State Treasurer: And provided further, That the advancement shall never, in any case, exceed the amount of the bond of the officer or individual having control of the disbursements from the funds so advanced.