FOREIGN TRADE ZONES 15 to some other customs district or to some foreign place, may be taken possession of by the collector and stored at owner's expense. Ballast of no mercantile value may be unloaded under authority of a customs permit. Ballast cargo or coal can not be taken on board vessels while discharging except on a lading permit. A special per- mit authorizing the immediate landing and delivery of animals, automobiles, theatrical effects, periodicals, tropical fruits, perishable and other articles requiring immediate delivery may be issued prior to the arrival of the importing vessel upon application by the importer and the deposit with the collector of a sum equal to double the esti- mated duties, the collector giving early notice to the appraiser who will promptly detail an officer to examine and appraise the mer- chandise. Entry of cargo—Formal entry of imported merchandise is required to be made within 48 hours, exclusive of Sundays and holidays, after the entry of the importing vessel. Entry must be made of all impor- tations, whether free or dutiable and regardless of their value, and is made principally for the following purposes: (a) Consumption; (6) warehouse, for storage for three years, if desired, without payment of duty; (¢) warehouse and immediate exportation; (d) warehouse and transportation; and (e) transportation without appraisement. Unless such production is impracticable, no merchandise exceeding $100 in value, except personal effects accompanying passengers and goods entered for warehouse and immediate exportation, is admis- sible into the United States without the production, upon entry of the goods, of a consular invoice prepared before the shipment thereof, describing the goods and specifying the foreign sale price therecf and all charges assessed thereon to the point of exportation, and certified by the American consular officer at the place of manufacture or exportation or by designated substitutes. The consular invoice and the covering bill of lading or express receipt, or bonds providing for their production, must be presented upon application for entry, together with, when required, a statement by the manufacturer abroad showing the cost, of production and the purchase price of the goods. Delivery of cargo—Entry having been made of the merchandise, and any duties thereon having been estimated and paid, or secured to be paid, the collector shall grant a permit to deliver such merchandise, and then, and not before, it shall be lawful to deliver the same. Merchandise for which no delivery permit has been received within 48 hours after a vessel's entry shall be taken possession of by the dis- charging inspector and stored at owmer’s expense in general order stores unless an extension of time is granted by the collector. The collector will designate at the time of entry at least one package of every invoice, and not less than one in every 10 packages, exceptin