Section 173, R.S. § 336; acts Feb. 14, 1903, ch. 552, § 10, 32 Stat. 829; Aug. 23, 1912, ch. 350, § 1, 37, Stat. 407; Mar. 4, 1913, ch. 141, § 1, 37 Stat. 736; Jan. 25, 1919, ch. 10, 40 Stat. 1055; Mar. 1, 1919, ch. 86, 40 Stat. 1256, required annual reports on statistics of commerce and navigation. See section 301 et seq. of Title 13, Census.

Section 174, R.S. § 337; acts Feb. 14, 1903, ch. 552, § 10, 32 Stat. 829; Aug. 23, 1912, ch. 350, § 1, 37 Stat. 407; Mar. 4, 1913, ch. 141, § 1, 37 Stat. 736; Mar. 1, 1919, ch. 86, 40 Stat. 1256; Aug. 31, 1961, Pub. L. 87–191, § 2, 75 Stat. 419, prescribed regulations required to be observed by collectors of customs. See section 301 et seq. of Title 13, Census.