Artikel 19

Any High Contracting Party may, at the time of signature, ratification or accession, declare that, in accepting the present Convention, he does not assume any obligations in respect of all or any of his colonies, protectorates or territories under suzerainty or mandate; and the present Convention shall not apply to any territories named in such declaration.
Any High Contracting Party may give notice to the Secretary-General of the League of Nations at any time subsequently that he desires that the Convention shall apply to all or any of his territories which have been made the subject of a declaration under the preceding paragraph and the Convention shall apply to all the territories named in such notice ninety days after its receipt by the Secretary-General of the League of Nations.
Any High Contracting Party may at any time declare that he desires that the present Convention shall cease to apply to all or any of his colonies, protectorates or territories under suzerainty or mandate and the Convention shall cease to apply to the territories named in such declaration one year after its receipt by the Secretary-General of the League of Nations.