Section 247
SEC. 247. The officer in charge of the lading must see that manifests are furnished for each vessel or conveyance, as herein required, and he must certify on the manifest to the lading of the goods, giving the name and description of the vessel, car, or other conveyance. One of the manifests should be delivered to the master of the vessel, or the conductor in charge of such car or other conveyance, and the other two should be returned to the custom-house without unnecessary delay. The collector must transmit one copy of the manifest by mail to the chief customs officer of the port of destination.