or decrees which regulate the conditions of their publication or circulation in that country have not been complied with, as correspondence of every kind which bears ostensibly inscriptions, designs, etc. forbidden by the legal enactments or regulations in force in the same country.
Article 17
1.—The Offices of the Union which have relations with countries situated outside the Union must lend their aid to all the other Offices of the Union for the transmission in open mail, through their intermediary, of articles of correspondence destined for or originating in such countries.
2.—As regards the transit charges on articles of every kind and responsibility in the matter of registered articles, the articles of correspondence in question are treated:
relative to their conveyance within the jurisdiction of the Union, in accordance with the stipulations of the present Convention;
relative to their conveyance outside the limits of the Union, in accordance with the conditions notified by the Office of the Union which serves as intermediary.
Nevertheless, the charges for the entire maritime conveyance, within and without the Union, may not exceed 20 francs per kilogram of letters and post cards and 1 franc per kilogram of other articles; if necessary, these charges are divided, pro rata for the distances, between the Offices participating in the maritime conveyance.
The transit charges, territorial or maritime, outside as well as within the limits of the Union on the articles of correspondence to which the present Article applies, are ascertained in the same manner as the transit charges relative to articles of correspondence exchanged between countries of the Union.
3.—The transit charges on articles of correspondence destined for countries outside the Union are payable by the Office of the country of origin, which fixes the postage rates of prepayment in its service on said articles; these rates, however, may not be lower than the normal Union rates.
4.—The transit charges on articles of correspondence originating in countries outside the Union are not payable by the Office of the country of destination. That Office delivers without charge the articles which it has received fully prepaid; on the unpaid articles it levies a charge equal to double the prepaid rate applicable in its own service to similar articles destined for the country where said articles originate; and on insufficiently prepaid articles it levies a charge equal to double the amount of the insufficiency; the charge, however, may not exceed that which is levied on unpaid articles of the same nature, weight and origin.
5.—Articles dispatched from one country of the Union to a country outside the Union and vice-versa, through the intermediary of an Office of the
