3406 INTERNATIONAL AGREEMENTS OTHER THAN TREATIES [62 STAT. ARTICLE 8. Redirection and return of air-mail correspondence. 1. Air-mail correspondence addressed to persons who have changed their residence is forwarded to the new destination by means ordinarily employed, unless the addressee has expressly requested redirection by air mail and has paid the forwarding office the aerial surcharge for the new route in advance. Undeliverable correspondence is returned to origin by means ordinarily employed. 2. If redirection or return of surcharged correspondence is effected by the ordinary means, the Paravion label and all notations relative to transmission by the air route shall be crossed out by means of two heavy transverse lines. CHAPTER II. Registered or Insured Articles. ARTICLE 9. Registered articles. Registered articles for which a special surcharge for air conveyance has been collected are subject to the postage rates and general con- ditions for acceptance provided for by the Convention. They are also liable to the same air surcharges as ordinary articles. ARTICLE 10. Return receipt. Each Administration is authorized to consider the weight of the return receipt form in computing the air surcharge. ARTICLE 11. Responsibility. Administrations assume, in regard to registered articles sent by the air route, the same responsibility as for other registered articles. ARTICLE 12. Insured articles. 1. Administrations which accept insured articles for transportation by air mail are authorized to collect, on account of such articles, a special insurance fee, the amount of which they are to fix. The sum of the ordinary insurance fee and the special fee shall not exceed double the limit fixed by Article 3, letter (c), of the Agreement concerning insured letters and boxes. 2. As for insured articles passing in transit in closed mails through the territory of countries not adhering to the aforesaid Agreement, or passing in transit through air services for which the countries concerned do not accept responsibility for insured articles, the re- sponsibility of those countries is limited to that provided for registered articles.
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