section 883a of this titleSection 881, R.S. § 4681, related to authority of the President to order surveys of coasts of the United States. See .
section 883a of this titleSection 882, R.S. § 4682, related to additional authority to order surveys beyond twenty-league limit. See .
Section 883, R.S. §§ 4683, 4684, related to mode of conducting surveys generally. See sections 883a and 883b of this title.