Section 767, acts Mar. 3, 1915, ch. 81, 7, 38 Stat. 928; June 20, 1918, ch. 103, 7, 40 Stat. 608, related to administration of oaths to employees of Lighthouse Service. Section 768, acts Aug. 24, 1912, ch. 355, 8, 37 Stat. 487; Mar. 3, 1915, ch. 81, 7, 38 Stat. 928; June 20, 1918, ch. 103, 7, 40 Stat. 608; June 6, 1939, ch. 185, 53 Stat. 810, related to oaths to expense accounts. Section 769, act Feb. 25, 1929, ch. 313, 3, 45 Stat. 1262, related to aids to navigation in Panama. See section 81 of Title 14, Coast Guard.