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The undersigned, duly authorised by their respective Governments, in virtue of the power provided under No. 3 of the Final Protocol of the Third International Opium Conference, declare that their Governments, having ratified the International Opium Convention of January 23, 1912, intend to put it into operation.

As regards the Powers which shall sign this Protocol before December 31, 1914, the Convention will come into force on that date; as regards the Powers which shall sign it after December 31, 1914, the Convention will come into force on the date of signature.

[A large number of countries became signatories to the present protocol by virtue of ratification of the Treaty of Versailles of June 28, 1919 (see article 295 of the treaty, post, vol. 2).]