Section 438 of this title, referred to in text, was repealed by act Aug. 13, 1953, ch. 428, § 10, 67 Stat. 568.

Sections 463, 467, 473, and 474 of this title, referred to in text, were repealed by act May 25, 1926, ch. 383, § 47, 44 Stat. 650.

First paragraph of this section is comprised of part of first sentence of section 6 of act Aug. 13, 1914. Remainder of first sentence of such section 6 is classified to sections 479, 494, and 495 of this title; second and third sentences of such section 6 are classified to sections 496 and 497 of this title, respectively.

Second paragraph of this section is from act Dec. 5, 1924.

Language was inserted in the first paragraph of this section limiting it to projects existing prior to Dec. 5, 1924, to avoid conflict with second paragraph applicable to projects after Dec. 5, 1924.

The definitions in section 371 of this title apply to this section.