ART. IV.—It is, however, expressly understood, that the co-operation mentioned in the preceding Article, and destined to place the Straits of the Dardanelles and of the Bosphorus, and the Ottoman Capital, under the temporary safeguard of the High Contracting Parties against all aggression of Mehemet Ali, shall be considered only as a measure of exception adopted at the express demand of the Sultan, and solely for his defence in the single case above-mentioned; but it is agreed, that such measure shall not derogate in any degree from the ancient rule of the Ottoman Empire, in virtue of which it has at all times been prohibited for ships of war of Foreign Powers to enter the Straits of the Dardanelles and of the Bosphorus. And the Sultan, on the one hand, hereby declares that, excepting the contingency above-mentioned, it is his firm resolution to maintain in future this principle invariably established as the ancient rule of his empire; and as long as the Porte is at peace, to admit no foreign ship of war into the Straits of the Bosphorus and of the Dardanelles; on the other hand, their Majesties the Queen of the United Kingdom of Great Britain and Ireland, the Emperor of Austria, King of Hungary and Bohemia, the King of Prussia, and the Emperor of All the Russias, engage to respect this determination of the Sultan, and to conform to the above-mentioned principle. ART. V.—The present Convention shall be ratified, and the ratifications thereof shall be exchanged at London at the expiration of two months, or sooner if possible. In witness whereof the respective Plenipotentiaries have signed the same, and have affixed thereto the seals of their arms. Done at London, the fifteenth day of July, in the year of Lord One thousand Eight hundred and forty. (L.S.) PALMERSTON. (L.S.) CHEKIB. (L.S.) NEUMANN. (L.S.) BULOW. (L.S.) BRUNNOW. ------- SEPARATE ACT annexed to the CONVENTION concluded at London on the 15th of July, 1840. His Highness the Sultan intends to grant, and to cause to be notified to Mehemet Ali, the conditions of the arrangement hereinafter detailed:— § 1. His Highness promises to grant to Mehemet Ali, for himself and for his descendants in the direct line, the administration of the Pachalic of Egypt; and his Highness promises, moreover, to grant to Mehemet Ali, for his life, with the title of Pacha of Acre, and with the command of the fortress of St. John of Acre, the administration of the southern part of Syria, the limits of which shall be determined by the following line of demarkation: