Section 4
SEC. 4. Use of savings from appropriations for salaries and wages for covering deficits in other items. Any provisions of existing law to the contrary notwithstanding, any unexpended balance of the appropriations made for salaries and wages of a bureau or office authorized in this Act, may, in the discretion of the department head concerned, be used to cover unavoidable deficits in the items of appropriations for sundry expenses and purchase and manufacture of furniture and equipment, as well as in items of special appropriations other than for salaries and wages, under the corresponding Department: Provided, That, without the previous approval of the President, no deficit shall be incurred in one single item of appropriation exceeding fifty per centum of the original amount of said item.