Section, acts Mar. 2, 1917, ch. 145, §46, 39 Stat. 966; Feb. 26, 1919, ch. 49, §§2, 4, 40 Stat. 1182; Aug. 7, 1939, ch. 501, §6, 53 Stat. 1226, related to salaries of district court officials. See section 604 of Title 28, Judiciary and Judicial Procedure.