Section
473, act Dec. 5, 1924, ch. 4, § 4, subsec. F,
43 Stat. 702, related to payment of project construction charges in installments after Dec. 5, 1924.
Section
474, act Dec. 5, 1924, ch. 4, § 4, subsec. F,
43 Stat. 702, related to modification of contracts existing prior to Dec. 5, 1924, in respect to payment of construction charges.