Mehmet Ali, Pasha of Egypt, was deputed by the Porte to reconquer the Holy Places, which he governed from 1813 to 1840. Since that time the Ottoman Government has always appointed a Governor of the Hejaz and maintained a garrison there, and the Porte took care a member of the Sherif’s family should reside in Constantinople in order to be able to replace the one who bore the title of Sherif, should the latter ever refuse to recognise the Caliph. Long negotiations were carried on during the war between the British Government and Hussein, Sherif of Mecca, the Emir Feisal’s father, concerning the territorial conditions on which peace might be restored in the East. These views were set forth in eight letters exchanged between July, 1915, and January, 1916. In July, 1915, the Sherif offered his military co-operation to the British Government, in return for which he asked it to recognise the independence of the Arabs within a territory including Mersina and Adana on the northern side and then bounded by the thirty-seventh degree of latitude; on the east its boundary was to be the Persian frontier down to the Gulf of Basra; on the south the Indian Ocean, with the exception of Aden; on the west the Red Sea and the Mediterranean as far as Mersina. On August 30, 1915, Sir Henry MacMahon, British resident in Cairo, observed in his answer that discussion about the future frontiers was rather premature. In a letter dated September 9, forwarded to the Foreign Office on October 18 by Sir Henry MacMahon, the Sherif insisted upon an immediate discussion. As he forwarded this letter, Sir Henry MacMahon mentioned the following statement made to him by the Sherif’s representative in Egypt: “The occupation by France of the thoroughly Arabian districts of Aleppo, Hama, Homs, and Damascus would be opposed by force of arms by the Arabs: but with the exception of these districts, the Arabs are willing to accept a few modifications of the north-western frontiers proposed by the Sherif of Mecca.” On October 24, 1915, by his Government’s order, Sir Henry MacMahon addressed the Sherif the following letter: “The districts of Mersina and Alexandretta and the parts of Syria lying to the west of the districts of Damascus, Homs, Hama, and Aleppo cannot be looked upon as merely Arabian, and should be excluded from the limits and frontiers that are being discussed. With these modifications, and without in any way impairing our present treaties with the Arabian chiefs, we accept your limits and frontiers. As to the territories within these limits, in which Great Britain has a free hand as far as she does not injure the interests of her ally, France, I am desired by the British Government to make the following promise in answer to your letter.