1222 34 Stat. 84. 33U.S . C. § 491-498. Amendment. August 5, 1939 [S. J. Res. 185] [Pub. Res., No. 41] Acting Secretary of the Navy. Assistant Secretary may continue to serve as, until appointment of Secretary. R. S . 5§ 180,1761. 5U. .C.§7,56. August 5, 1939 [H. J. Res. 208] [Pub. Res., No. 42] Portrait of former President Herbert Hoover. Procurement au- thorized. 36 Stat. 371. August 6, 1939 [H. R. 28831 [Public, No. 298] Federal Firearms Act, amendment. 52 Stat. 1250. 15 U. 8. C., Supp. IV, 901 (8). "Ammunition", definition modified. PUBLIC LAWS-CHS. 493-495, 500-AUG. 5 , 6 , 1939 [53 STAT. thereto being constructed across the Des Moines River at Levy, Iowa, and to maintain and operate said bridge as a lawful structure sub- ject to the provisions of the Act entitled "An Act to regulate the construction of bridges over navigable waters", approved March 23, 1906. SEC. 2 . The right to alter, amend, or repeal this Act is hereby expressly reserved. Approved, August 5, 1939. [CHAPTER 494] JOINT RESOLUTION To authorize the Assistant Secretary of the Navy to continue to serve as Acting Secretary of the Navy until the appointment of a Secretary, and for other purposes. Resolved by the Senate and House of Representatives of the United States of America in Congress assembled, That notwith- standing the provisions of section 180, Revised Statutes, the Assistant Secretary of the Navy may continue to serve as Acting Secretary of the Navy until such time as a Secretary of the Navy shall be appointed to succeed the late Secretary of the Navy, the Honorable Claude A. Swanson, deceased; and the provisions of section 1761, Revised Statutes, shall not be applicable to an appointment to fill the existing vacancy in said office. Approved, August 5, 1939. [CHAPTER 495] JOINT RESOLUTION Authorizing the Joint Committee on the Library to procure an oil portrait of former President Herbert Hoover. Resolved by the Senate and House of Representatives of the United States of America in Congress assembled, That the Joint Committee on the Library is hereby authorized to procure an oil portrait of former President Herbert Hoover, for the White House, to be painted by American artists, at a cost not to exceed $2,500. The committee shall have the advice of the Commission of Fine Arts in accordance with the Act of Congress approved May 17, 1910. Approved, August 5, 1939. [CHAPTER 500] AN ACT To amend the Federal Firearms Act (Public, Numbered 785, seventy-fifth Con- gress) so as to more adequately define the term "ammunition" as said term is defined in said Act. Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, That section 1, sub- section 8, of the Federal Firearms Act (Public, Numbered 785, Sev- enty-fifth Congress) be amended so as to read as follows, to wit: "(8) The term 'ammunition' shall include only pistol or revolver ammunition. It shall not include shotgun shells, metallic ammuni- tion suitable for use only in rifles, or any .22 caliber rimfire ammu- nition." Approved, August 6, 1939.
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