Functions of Secretary of Agriculture, administered through Bureau of Biological Survey, relating to conservation of wildlife, game, and migratory birds, transferred to Secretary of the Interior by Reorg. Plan No. II of 1939, § 4(f), eff. July 1, 1939, 4 F.R. 2731, 53 Stat. 1433, set out in the Appendix to Title 5, Government Organization and Employees.