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destination in virtue of the present Article, and of Article XIX following, shall not, on any pretext, be charged with any rate or duty whatever to be paid by the receivers.
It is, nevertheless, understood that this provision does not in any way invalidate the right of either Office to refuse to deliver printed papers, the importation of which may be prohibited by the laws or regulations of the country to which they are transmitted.
ARTICLE XIX.
The French Post Office shall pay to the British Post Office, on such of the newspapers and other printed papers mentioned in Article XVIII preceding as shall originate in France, in Algeria, or in the French Post Offices established in Turkey, Syria, and Egypt, namely:
1. On printed papers of every kind addressed to the United Kingdom of Great Britain and Ireland, the sum of one franc per kilogramme, net weight.
2. On printed papers of every kind sent from France and Algeria, addressed to Malta by means of British packets, the like sum of one franc per kilogramme, net weight.
The British Post Office, on its side, shall pay to the French Post Office, on such of the newspapers and other printed papers mentioned in Article XVIII preceding as shall originate in the United Kingdom of Great Britain and Ireland, or in Malta, namely:
1. On printed papers of every kind sent from the United Kingdom of Great Britain and Ireland, addressed to France and Algeria, the sum of fifty centimes per pound British, net weight.
2. On printed papers of every kind sent from Malta, addressed to France and Algeria by means of British packets, the like sum of fifty centimes per pound British, net weight.
3. On printed papers of every kind sent from Malta, addressed to France and Algeria by means of French packets, the sum of one franc per pound British, net weight.
4. On printed papers of every kind sent from the United Kingdom of Great Britain and Ireland, addressed to the French Offices established in Turkey, Syria, and Egypt, the sum of one franc per pound British, net weight.
5. And lastly, on printed papers of every kind sent from Malta, addressed to the French Offices established in Turkey, Syria, and Egypt, the sum of fifty centimes per pound British, net weight.
In order to enjoy the reduction of postage accorded by the present Article, the printed papers must be prepaid, in conformity with Article XVIII preceding, must be put in bands, and must not contain any writing, figure, or manual mark whatsoever.
Printed papers which are not in conformity with these conditions shall be treated as letters, and charged accordingly.
ARTICLE XX.
The French Government undertakes the conveyance across the French territory of the closed mails which the British Post Offices may exchange, by way of France, either with other British Post Offices or with Foreign Post Offices.
The French Government likewise undertakes the conveyance, by French packets and other French vessels, of the closed mails which the British Post Offices may exchange by means of these packets or vessels, either with other British Post Offices or with Foreign Post Offices.
The British Government, on its side, undertakes the conveyance across the British territory of the closed mails which the French Post Offices may exchange, by way of Great Britain, either with other French Post Offices or with Foreign Post Offices.
The British Government likewise undertakes the conveyance, by British packets and other British vessels, of the closed mails which the French Post Offices may exchange by these means, either with other French Post Offices or with Foreign Post Offices.
It is agreed that those of the above-mentioned closed mails which shall be sent by way of the Isthmus of Suez, or by way of the Isthmus of Darien, shall be conveyed across the Isthmus of Suez, or across the Isthmus of Darien, as the case may be, with the