DOCUMENTS DIPLOMATIQUES
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 the arrangement with regard to opium now in force under the regulations attached to the treaty of Tien-Tsin shall revive.
 8° The High contracting Parties may, by common consent, adopt any modifications of the provisions of the present additional article which experience may show to be desirable.
 9° It is understood that the commission provided for in clause 7 of section III of the Chefoo agreement to inquire into the question of the prevention of smuggling into China from Hong-Kong shall be appointed as soon as possible.
 10° The Chefoo agreement, together with, and as modified by, the present additional article, shall be ratified, and the ratifications shall be exchanged at London as soon as possible.
 In witness whereoff the undersigned, duly authorized thereto by their respective governments, have signed the present additional article, and have affixed thereto their seals.
 Done at London, in quadruplicate (two in English and two in Chinese) this 18th day of July, 1885, being the seventh dayof the sixth moon in the eleventh year of the reign of Kwang-Sli.
                                            (L. S.) Salisbury.
                                             (L. S.) Tseng.
 XXXI.	— Convention entre la Franceetl’Annam,signée à Hué le 30 juillet 1885 (convention de Courcy).
 (L’Indo-Cliine française, par J.-L. de Lanessan, p. 175).
 XXXI bis. — Dépèche ministérielle du 13 août 1885.
 (Journal officiel de la République française, 13 août 1885).
 XXXII.	— Décret d'organisation des résidences au Tonkin.
 (Journal officiel de la République française, 27 janvier 1886).
 XXXIII.	— Traité entre la France et la Chine, signé à Peking le 25 avril 1886.
  (De Clercq, tome XVII, p. 164-174).