Chapter V : Final provisions - Art. 23.
Art. 23. The present Convention shall come into force, in the case of the Powers, which were a Party to the first deposit of ratifications, sixty days after the date of the ' procès-verbal ' of this deposit, and, in the case of the Powers which ratify subsequently or which adhere, sixty days after the notification of their ratification or of their adhesion has been received by the Netherlands Government.