warehouse and immediate exportation. In this case the collector may designate the vessel in which the merchandise is laden as constru ctively a warehouse, in order to facilitate the direct transfer of the goods to the exporting vessel. The same procedure may apply to goods entered for warehouse and immediate transportation. Merchandise received at any port from another port of the Islands on an entry for immediate transportation without appraisement may be entered at the port of delivery either for consumption or warehouse. [355-162; 1235-6.] ARTICLE  IX Examination and Appraisal of Merchandise and Liquidation of Duties SECTION  1427 . Designation of Packages to be Examined.  — Unless the collector, from the character and description of the merchandise, is of the opinion that the examination of a less or greater proportion of packages will amply protect the revenues, there s hall be designated and sent to appraisers' stores, for examination and appraisal, at least one package of every invoice, and one package at least of every ten packages of merchandise imported. [355-170.] SECTION  1428 . Bond Upon Delivery of Unexamined Packages . — To effect immediate delivery of packages not ordered for examination, the collector may accept a bond in such sum and with such conditions as shall be sufficient to safeguard the revenue. If such security is not supplied, all the packages shall be held until the return is made and duties paid. [1520-2; U.S. Tariff Act (1909), sec. 15.] SECTION  1429 . Return of Examining Officer . — The examining officer shall compare the cases designated for examination and their contents with the invoice and shall make return of the description of the goods covered thereby, whether the quantities are corr ect, and, in case of merchandise dutiable ad valorem, whether the prices named show the correct value of the merchandise. [355-185.] SECTION  1430 . Appraiser's Samples . — Appraisers shall see that good and sufficient samples of all lines of merchandise which may be readily sampled 418 Copyright 2012 CD Technologies Asia, Inc. and Accesslaw, Inc. Philippine Law Encyclopedia 2011