Section 226a, act July 8, 1940, ch. 548, 54 Stat. 742, related to lease of lands not within known productive field. See section 226 of this title.

Section 226b, acts July 29, 1942, ch. 534, § 1, 56 Stat. 726; Dec. 22, 1943, ch. 376, 57 Stat. 608; Sept. 27, 1944, ch. 429, 58 Stat. 755; Nov. 30, 1945, ch. 495, 59 Stat. 587, related to preference right to new oil and gas lease upon expiration of five-year non-competitive oil and gas lease. See section 226 of this title.