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 pushed outside this area, and themselves been drowned in the outer world. Egypt, Algiers, Morocco, Malta, Sicily, Spain, Cilicia and France absorbed and obliterated Semitic colonies. Only in Tripoli of Africa, and in the everlasting miracle of Jewry, had distant Semites kept some of their identity and force.

The origin of these peoples was an academic question; but for the understanding of their revolt their present social and political differences were important, and could only be grasped by looking at their geography. This continent of theirs fell into certain great regions, whose gross physical diversities imposed varying habits on the dwellers in them. On the west the parallelogram was framed, from Alexandretta to Aden, by a mountain belt, called (in the north) Syria,and thence progressively southward called Palestine, Midian, Hejaz, and lastly Yemen. It had an average height of perhaps three thousand feet, with peaks of ten to twelve thousand feet. It faced west, was well watered with rain and cloud from the sea, and in general was fully peopled.

Another range of inhabited hills, facing the Indian Ocean, was the south edge of the parallelogram. The eastern frontier was at first an alluvial plain called Mesopotamia, but south of Basra a level littoral, called Kuweit, and Hasa, to Gattar. Much of this plain was peopled. These inhabited hills and plains framed a gulf of thirsty desert, in whose heart was an archipelago of watered and populous oases called Kasim and Aridh. In this group of oases lay the true centre of Arabia, the preserve of its native spirit, and its most conscious individuality. The desert lapped it round and kept it pure of contact.

The desert which performed this great function around the oases, and so made the character of Arabia, varied in nature. South of the oases it appeared to be a pathless sea of sand, stretching nearly to the populous escarpment of the Indian Ocean shore, shutting it out from Arabian history, and from all influence on Arabian morals and politics. Hadhramaut, as they called this southern coast, formed part of the history of the Dutch Indies; and its thought swayed Java rather than Arabia. To the west of the oases, between them and the Hejaz hills, was the Nejd desert, an area of gravel and lava, with little sand in it. To the east of these oases, between them and Kuweit, spread a similar expanse of gravel, but with some 8