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Rh accredited representatives at this capital or otherwise, of their adhesion or non-adhesion, as the case may be, to the terms proposed.

15. The Secretary of State of the United States is requested to organize and establish the Commercial Bureau as soon as practicable, after a majority of the countries here represented have officially signified their consent to join the International Union.

16. Amendments and modifications of the plan of this union may be made, at any time during its continuance, by the vote, officially communicated to the Secretary of State of the United States, of a majority of the members of the Union.

17. This Union shall continue in force during a term of ten years from the date of its organization, and no country becoming a member of the Union shall cease to be a member until the end of said period of ten years. Unless twelve months before the expiration of said period a majority of the members of the Union shall have given to the Secretary of State of the United States official notice of their wish to terminate the union at the end of its first period, the Union shall continue to be maintained for another period of ten years and thereafter, under the same conditions, for successive periods of ten years each.