Sections, acts Aug. 12, 1937, ch. 598, 13, 50 Stat. 627; July 1, 1944, ch. 377, 9, 58 Stat. 721; Mar. 8, 1946, ch. 81, 8, 60 Stat. 39, related to punishment for offenses after first offense. See section 801 et seq. of this title.