62 STAT.] MULTILATERALUNIVERSAL POSTAL UNION-JULY 5, 1947 11. When a receiving office upon which the verification of the dis- patch was incumbent has not sent to the office of origin, and to the last intermediate exchange office, if any, by the first mail available after verification, a bulletin reporting any irregularities, it is consid- ered, until the contrary is proved, as having received the dispatch and its contents. The same presumption exists in the case of irregu- larities which have not been mentioned, or which have been reported in an incomplete manner, in the bulletin of verification; and the same applies when the provisions of this Article concerning the formalities to be observed have not been fulfilled. 12. The bulletins of verification and the duplicates are transmitted under registered cover. ARTICLE 151. Return of empty sacks. 1. Barring contrary agreement between the corresponding Admin- istrations, sacks shall be returned empty, by the next mail, in a direct dispatch for the country to which such sacks belong. The number of sacks returned by each mail shall be entered under the Service Infor- mation heading of the letter bill. 2. The return is effected between the exchange offices designated for that purpose. 3. The empty sacks shall be rolled up in suitable bundles; the label blocks, as well as the labels of cloth, parchment or other strong mate- rial, if any, shall be placed inside the sacks. The bundles shall be provided with a label indicating the name of the exchange office from which the sacks were received, whenever they are returned through the intermediary of another exchange office. 4. If the empty sacks to be returned are not too numerous, they may be placed inside the sacks containing the correspondence; other- wise, they shall be placed in separate sealed sacks labeled with the names of the exchange offices. The labels shall bear the note Sacs vides (empty sacks). 5. In the event that the check made by an Administration on the return of sacks belonging to it shows that 10 percent of the total number of sacks used during a year for the preparation of dispatches have not been returned before the end of that year, the Administra- tion which cannot prove the return of the empty sacks is bound to reimburse the dispatching Administration for the value of the missing sacks. Reimbursement shall also be effected if the number of missing sacks does not reach 10 percent but exceeds 50 sacks. 6. Each Administration fixes, periodically, and uniformly for all kinds of sacks which are used by its exchange offices, an average value in francs, and communicates it to the Administrations concerned through the intermediary of the International Bureau. 3379 Presumption of cor- rectness. Transmittal of bul- letins. Reimbursement for Inreturned sacks. Average value. 6 8706-52 -T- . III---49
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