22 FOREIGN TRADE ZONES intent whether the merchandise is to be sampled, gauged, or measured, and give general instructions to inspectors respecting drawback goods which require sampling, weighing, gauging or measuring, in order that in the event such sampling, etc., is not obtained under the copy of the notice of intent filed at the customhouse, the inspector may obtain the same under the copy filed with him at the time the goods are deposited at the place of lading. Whenever practicable, merchandise subject to sampling, weighing, gauging or measuring shall be sampled, weighed, gauged or measured at the place of deposit for lading after the goods have been placed in the custody of the exporting carrier. A drawback entry and certificate of manufacture must be filed in duplicate within two years from the date of clearance of the exporting vessel or conveyance. Claims for drawback not completed within the two years will be treated as abandoned. The above are just a few of a large number of provisions contained in the customs regulations respecting the entry of goods for consump- tion, warehouse, or other distribution, and respecting the formalities to be observed in withdrawing such goods for export. Many minor requirements have been omitted in some of these references, as well as many special rules not applicable to all imports. THE DRAWBACK The customs provisions relating to drawback are referred to under the heading of “Procedure with respect to imports and reexports.” Under these provisions a manufacturer may secure a refund of 99 per cent of the duties paid on goods of foreign origin, contained in manufactures which he exports; or of duties paid on foreign goods reexported in their original condition, provided. that they have been continuously under customs control. The drawback paid by the United States during the five years 1922- 1926 was as follows: 1922__ 1923. _. 1924._. 1925. 026 $35, 200, 048. 95 11, 934, 831. 32 14, 095, 456. 88 20, 658, 167. 20 13. 136. 989. 46 Details of the items making up the above totals are given in the accompanying table. It will be noted that sugar was the principal commodity in each of the five years. Other important commodities, on which drawback was paid, were oilseeds, cotton, silk, jute, paper, iron and steel, aluminum, lead, ferro-alloying metals, and photographic Alms