All debts and indebtedness, authorized to be incurred by the Constitutional Convention of the proposed State of Oklahoma, and all expenses of holding the election for the ratification or rejection of this Constitution and for the election of officers of a full state government, which shall remain unpaid after the appropriation made by the Congress of the United States has been exhausted, are hereby assumed by the State; and it is hereby made the duty of the Legislature, at its first session, to provide for the payment of same: Provided, That the debts and indebtedness, the payment of which is hereby assumed by the State, shall not include any debt or expense as a salary or compensation of the delegates of the Constitutional Convention.