The provisions of the present Act of Navigation shall remain in force during times of war. Consequently, the navigation of all nations, neutral or belligerant, shall at all times be free for the purpose of trade on the Niger, its branches, affluents, mouths and issues, as well as on the territorial waters fronting the mouths and issues of the river. The traffic shall likewise remain free, notwithstanding the state of war, on its roads, its railways and canals mentioned in Article XXIX. The only exception to this principle shall be in cases in connection with the transport of articles intended for a belligerent, and held, in accordance with the laws of nations, to be contraband of war. * * * * * CHAPTER VI. DECLARATION RELATIVE TO THE ESSENTIAL CONDITIONS FOR NEW ANNEXATIONS ON THE AFRICAN CONTINENT TO BE CONSIDERED EFFECTIVE. ARTICLE XXXIV. The Power, which in future takes possession of a territory on the coast of the African Continent, situated outside of its actual possessions, or which, having none there, has first acquired them, and the power which assumes a protectorate, shall accompany either act by a notification addressed to the other Powers signatory to the present Act, so as to enable them to protest against the same, if there exist any grounds for their doing so. ARTICLE XXXV. The Powers signatory to the present Act, recognize the obligation to insure in the territories occupied by them on the coasts of the African Continent, the existence of an adequate authority to enforce respect for acquired rights, and for freedom of trade and transit wherever stipulated. CHAPTER VII. GENERAL PROVISIONS. ARTICLE XXXVI. The Powers signatory to the present general Act reserve to themselves the right of eventually, by mutual agreement, introducing therein modifications or improvements, the utility of which has been shown by experience. ARTICLE XXXVII. The Powers who may not have signed the present Act shall accept its provisions by a separate Act. The adhesion of each Power shall be notified in the usual diplomatic manner to the Government of the German Empire, and by it to those of all the signatory and adherent States. The adhesion shall imply the full right of acceptance of all the obligations, and admission to all the advantages stipulated for in the present general Act. ARTICLE XXXVIII. The present general Act shall be ratified with as short a delay as possible, and in no case shall that delay exceed a year. It shall come into force for each Power on the date of its ratification by that Power. Meanwhile the Powers signatory to the present Act bind themselves to adopt no measure that shall be contrary to the provisions of the said Act.