to Bagdad, from Babylon to Seleucia, from Kish to Babylon--but which always springs up again, like Delhi, within a few parasangs of its last ruins, in an area that is an irresistible focus of population; Basra amid its palm-groves, so far down stream that it belongs to the Indian Ocean--the port from which Sinbad set sail for fairyland, and from which less mythical Arab seamen spread their religion and civilisation far over African coasts and Malayan Indies; these, and besides them almost all the holy cities of mankind: Kerbela, between the Euphrates and the desert, where, under Sunni rule, the Shias of Persia and India have still visited the tombs of their saints and buried their dead; Jerusalem, where Jew and Christian, Orthodox, Catholic and Protestant, Armenian and Abyssinian, have their common shrines and separate quarters; Mekka and Medina in the heart of the desert, beyond which their fame would never have passed but for a well and a mart and a precinct of idols and the Prophet who overthrew them; and there are the cities on the Pilgrim Road (linked now by railway with Medina, the nearer of the _Haramein_): Beirût the port, with its electric trams and newspapers, the Smyrna of the Arab lands; and Damascus the oasis, looking out over the desert instead of the sea, and harbour not of ships but of camel-caravans. The names of these cities call up, like an incantation, the memory of the civilisations which grew in them to greatness and sank in them to decay: Mesopotamia, a great heart of civilisation which is cold to-day, but which beat so strongly for five thousand years that its pulses were felt from Siberia to the Pillars of Hercules and influenced the taste and technique of the Scandinavian bronze age; the Assyrians, who extended the political marches of Mesopotamia towards the north, and turned them into a military monarchy that devastated the motherland and all other lands and peoples from the Tigris to the sea; the Hebrews, discovering a world-religion in their hill-country overlooking the coast; the Sabaeans, whose queen made the first pilgrimage to Jerusalem, coming from Yemen across the Hedjaz when Mekka and Medina were still of no account; the Philistines and Phoenicians of the Syrian sea-board, who were discovering the Atlantic and were too busy to listen to the Hebrew prophets in their hinterland; the Ionians, who opened up the Black Sea and created a poetry, philosophy, science, and architecture which are still the life-blood of ours, before they were overwhelmed, like the Phoenicians before them, by a continental military power; the Hittites, who first transmitted the fruitful influences of Mesopotamia to the Ionian coasts--a people as mysterious to their contemporaries as to ourselves, maturing unknown in the fastnesses of Anatolia, raising up a sudden empire that raided Mesopotamia and colonised the Syrian valleys, and then succumbing to waves of northern invasion. All these people rose