Section, acts Apr. 9, 1930, ch. 125, § 13, 46 Stat. 152; May 26, 1930, ch. 320, § 1, 46 Stat. 379, which changed the name of the Advisory board for National Institute of Health to the National Advisory Health Council and provided for appointment of additional members and the terms of service, compensation, and allowances for such additional members and an additional function for the Council, was executed to section 21 of this title.