61 STAT.] SOTH CONG. , 1ST SESS.-CH. 343-JULY 26, 1947 continue in force for two years following the date of enactment of this Act except to the extent modified by the provisions of this Act or under the authority of law. TRANSFER OF FUNDS SEC. 306. All unexpended balances of appropriations, allocations, nonappropriated funds, or other funds available or hereafter made available for use by or on behalf of the Army Air Forces or officers thereof, shall be transferred to the Department of the Air Force for use in connection with the exercise of its functions. Such other unexpended balances of appropriations, allocations, nonappropriated funds, or other funds available or hereafter made available for use by the Department of War or the Department of the Army in exercise of functions transferred to the Department of the Air Force under this Act, as the Secretary of Defense shall determine, shall be trans- ferred to the Department of the Air Force for use in connection with the exercise of its functions. Unexpended balances transferred under this section may be used for the purposes for which the appropriations, allocations, or other funds were originally made available, or for new expenditures occasioned by the enactment of this Act. The transfers herein authorized may be made with or without warrant action as may be appropriate from time to time from any appropriation covered by this section to any other such appropriation or to such new accounts established on the books of the Treasury as may be determined to be necessary to carry into effect provisions of this Act. AUTHORIZATION FOR APPROPRIATIONS SEC. 307. There are hereby authorized to be appropriated such sums as may be necessary and appropriate to carry out the provisions and purposes of this Act. DEFINITIONS SEC. 308. (a) As used in this Act, the term "function" includes functions, powers, and duties. (b) As used in this Act, the term "budget program" refers to recom- mendations as to th" apportionment, to the allocation and to the review of allotments of appropriated funds. SEPARABILITY SEC. 309. If any provision of this Act or the application thereof to any person or circumstances is held invalid, the validity of the remainder of the Act and of the application of such provision to other persons and circumstances shall not be affected thereby. EFFECTIVE DATE SEC. 310. (a) The first sentence of section 202 (a) and sections 1, 2, 307, 308, 309, and 310 shall take effect immediately upon the enact- ment of this Act. (b) Except as provided in subsection (a), the provisions of this Act shall take effect on whichever of the following days is the earlier: The day after the day upon which the Secretary of Defense first appointed takes office, or the sixtieth day after the date of the enact- ment of this Act. SUCCESSION TO THE PRESIDENCY SEC. 311. Paragraph (1) of subsection (d) of section 1 of the Act entitled "An Act to provide for the performance of the duties of the office of President in case of the removal, resignation, death, or in- ability both of the President and Vice President", approved July 18, 509 "Function." " Budget program." Ante, pp. 500, 495. 496.