INTERNATIONAL AGREEMENTS OTHER THAN TREATIES [62 STAT. PROVISIONS CONCERNING THE TRANSPORTATION OF REGULAR MAILS BY AIR CHAPTER I. General Provisions. ARTICLE 1. Articles of correspondence admitted to air transportation. 1. There are admitted to air transportation, over all or part of the Ante, p.3319. route, all the articles designated in Article 35 of the Convention, as well as money orders, collection orders, and subscriptions by mail. Such articles which, in that case, are known as air-mailcorrespondence, are divided into articles for which a special air-transportation sur- charge is collected (surcharged articles), and those for which such a charge is not due (unsurcharged articles). Registration, etc. 2. The articles mentioned in Article 35 of the Convention may be submitted to the formality of registration and be sent C. O. D . Insured letters and 3. Insured letters and boxes may also be transported by air in boxes. relations between countries which agree to exchange articles of that kind by that route. Marking. 4. Surcharged air-mail articles shall be marked very clearly on the front with the words "ParAvion" or a similar indication in the lan- guage of the country of origin. ARTICLE 2. Ante. p . 331 . Administrations without air service. Freedom of transit. The freedom of transit provided for in Article 28 of the Convention is guaranteed to air-mail correspondence throughout the territory of the Union, whether or not the intermediate Administrations take part in the forwarding of the correspondence. ARTICLE 3. Forwardingof air-mailcorrespondence. 1. Administrations which make use of communications by air for the transportation of their own surcharged air-mail correspondence are bound to forward by those same routes the surcharged air-mail correspondence received by them from other Administrations. The same applies to unsurcharged air-mail correspondence, provided the available capacity of the planes permits it. 2. Administrations having no air service forward air-mail corre- spondence by the most rapid means utilized by the mails. The same applies if, for any reason, forwarding by such other means offers advantages over an existing air route. 3402
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