Section 581b, act May 22, 1928, ch. 678, § 3, 45 Stat. 701, authorized appropriations for investigations of diseases of forest trees and products.

Section 581c, act May 22, 1928, ch. 678, § 4, 45 Stat. 701, authorized appropriations for investigations of forest insects.

Section 581d, act May 22, 1928, ch. 678, § 5, 45 Stat. 701, authorized appropriations for experiments and investigations of life histories and habits of forest animals, birds, and wildlife.

Section 581e, act May 22, 1928, ch. 678, § 6, 45 Stat. 701, authorized appropriations for investigations of the relationship of weather conditions to forest fires.

Section 581f, act May 22, 1928, ch. 678, § 7, 45 Stat. 701, authorized appropriations for experiments and investigations for development of improved methods of management of forest ranges.

Section 581g, act May 22, 1928, ch. 678, § 8, 45 Stat. 701, authorized appropriations for experiments, investigations, and tests of the physical and chemical properties of forest products.

Section 581h, acts May 22, 1928, ch. 678, § 9, 45 Stat. 702; May 31, 1944, ch. 217, 58 Stat. 265; June 25, 1949, ch. 245, 63 Stat. 271; Aug. 8, 1953, ch. 378, 67 Stat. 489; Sept. 25, 1962, Pub. L. 87–685, 76 Stat. 579; Dec. 14, 1967, Pub. L. 90–193, 81 Stat. 579; Aug. 17, 1974, Pub. L. 93–378, § 3(b), formerly § 2(b), 88 Stat. 476, renumbered Oct. 22, 1976, Pub. L. 94–588, § 2, 90 Stat. 2949, set forth provisions relating to comprehensive survey and analysis of the present and prospective conditions of and requirements for renewable resources.

Section 581i, act May 22, 1928, ch. 678, § 10, 45 Stat. 702, authorized appropriations for economic investigations of forest lands and forest products.

Repeal effective Oct. 1, 1978, see section 9 of Pub. L. 95–307, set out as an Effective Date note under section 1641 of this title.