62 STAT.] MULTILATERALUNIVERSAL POSTAL UNION-JULY 5, 1947 performed the transit previously and the Administrations which per- form it subsequent to the modification which has occurred, even when the reduction of the accounts does not attain the prescribed minimum for certain Administrations. The request for a revision of the ac- counts, and, if need be, for special statistics, may be made when the modification in the routing of the correspondence in question has lasted at least nine months. However, the results of those statistics are not taken into consideration unless the period of twelve months is actually completed. 7. If, when special statistics are taken, it is found that the total weights of the mails exchanged between two Administrations and transported by a third Administration have increased by 100 per cent or diminished by 50 per cent as compared with the results of the last statistical period, and that the account of the third Admin- istration would undergo, for that reason, a modification of more than 5,000 francs a year, the new weights established shall serve as the basis for the transit charges due to that Administration. 8. Likewise, when an intermediate Administration establishes, during the six months following the statistics, that a difference of 20 per cent at least in the total weights conveyed exists between the dispatches sent by another Administration during the statistical period and the normal traffic, the Administration concerned may demand the taking of new statistics, if the accounts between two Administra- tions are affected by a modification of more than 5,000 francs a year. ARTICLE 153. Preparationand designation oJ closed mails during the statisticalperiod. 1. During each statistical period, the exchange of correspondence in closed mails across the territory or by means of the services of one or more intermediate Administrations gives rise to the employment of separate sacks for letters and post cards and for other articles. 2. The number of sacks utilized for the preparation of a dispatch must be reduced to the strict minimum. 3. The obligation of preparing separate sacks for letters and post cards and for other articles does not apply to dispatches whose total gross weight does not exceed 3 kg., i. e., the average weight considered in the accounts for light sacks by virtue of Article 161 hereafter. Each Administration therefore has the option, in such cases, of in- cluding all the articles in a single sack, which is then counted as an L. C. sack. It is understood, however, that such a dispatch may not contain any other sack giving rise to the payment of transit charges. 4. When the volume of the mails permits, the separate sacks of articles of all kinds (L. C. and A. 0.) for one and the same destination shall be inclosed in a single collective sack. 5. By exception to the provisions of Articles 146 and 147, every Administration has the option, during the statistical period, of in- cluding registered and special-delivery articles other than letters and post cards in one of the sacks intended for other articles, mentioning 3381 Basis for charges in special cases. Demand for new statistics; condition. Ante, p. 3374 . Optional inclusions.
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