Last clause of first paragraph was originally limited to appropriations made for a period of six years beginning July 1, 1924.

The portion of the first paragraph providing “and a sum not to exceed $10,000,000 annually is hereby authorized to be appropriated for that purpose, for a period of six years beginning July 1, 1924” together with the fourth paragraph, relating to expenditures for improvements between Head of Passes and Rock Island, were from act Mar. 4, 1923, which superseded provisions on the same subjects contained in act Mar. 1, 1917, from which the rest of the section was derived, and were omitted as executed.

Sections 2 and 3 of act Mar. 1, 1917, are classified to sections 703 and 701, respectively, of this title, and section 4 of act Mar. 1, 1917, amended section 643 of this title.

Department of War designated Department of the Army and title of Secretary of War changed to Secretary of the Army by section 205(a) of act July 26, 1947, ch. 343, title II, 61 Stat. 501. Section 205(a) of act July 26, 1947, was repealed by section 53 of act Aug. 10, 1956, ch. 1041, 70A Stat. 641. Section 1 of act Aug. 10, 1956, enacted “Title 10, Armed Forces” which in sections 3010 to 3013 continued Department of the Army under administrative supervision of Secretary of the Army.