Any vessel may proceed with any merchandise brought in her, and, in the manifest delivered to the collector of the customs, reported as destined for any foreign port, from the district within which such vessel shall first arrive to such foreign port without paying or securing the payment of any duties upon such merchandise as shall be actually re-exported in the vessel. But the manifest so declaring to re-export such merchandise shall be delivered to such collector within forty-eight hours after the arrival of the vessel. And the master of such vessel shall give bond as required by the next section. (R. S., 2776.) The master of any vessel so destined for a foreign port shall give bond, with one or more sureties, in a sum equal to the amount of the duties upon the merchandise, as the same shall be estimated by the collector and naval officer of the port where the report shall be made, to the satisfaction of the collector, with condition that the merchandise, or any part thereof, shall not be landed within the United States, unless due entry thereof shall have been first made and the duties thereupon paid, according to law. Such bond shall be taken for the same period, and canceled in like manner, as a bond given for obtaining drawback of duties. No such bond shall be required in respect to merchandise on board of any vessel which has put into the United States from a necessity, shown as prescribed in section twenty-seven hundred and seventy-three. (R. S., 2777.) The collector receiving any bond conditioned for the payment of duties upon merchandise reported as destined for a foreign port, in case the same shall be landed within the United States, or any other bonds taken upon the exportation of merchandise entitled to drawback, shall immediately after the time when by the conditions of the same they ought to be canceled, put the same in suit, provided the proof of the occurrence of such a necessity as excuses a landing of such goods within the United States has not been produced, or further time granted therefor by the Secretary of the Treasury. (R. S., 2778.) Inspection of merchandise laden for export.