By the route sketched above, it is at least seven hundred miles from Jerusalem to Babylon--a distance which, when we take into account that many of the captives walked in fetters, cannot have occupied them less than three months. We may form some conception of the aspect of the caravans from the transportations of captives which are figured on the Assyrian monuments, as in the Assyrian basement in the British Museum. From these it appears as if families were not separated, but marched together. Mules, asses, camels, ox-waggons, and the captives themselves carried goods. Children and women suckling infants were allowed to ride on the waggons. At intervals fully-armed soldiers walked in pairs.[23]
Mesopotamia, the land "in the middle of the rivers," Euphrates and Tigris, consists of two divisions, an upper and a lower. The dividing line crosses from near Hit or His on the Euphrates to below Samarah on the Tigris. Above this line the country is a gently undulating plain of secondary formation at some elevation above the sea. But Lower Mesopotamia is absolutely flat land, an unbroken stretch of alluvial soil, scarcely higher than the Persian Gulf, upon which it steadily encroaches. Chaldea was confined to this Lower Mesopotamia, and was not larger, Rawlinson estimates, than the kingdom of Denmark.[24] It is the monotonous level which first impresses the traveller; but if the season be favourable, he sees this only as the theatre of vast and varied displays of colour, which all visitors vie with one another in describing: "It is like a rich carpet;" "emerald green, enamelled with flowers of every hue;" "tall wild grasses and broad extents of waving reeds;" "acres of water-lilies;" "acres of pansies." There was no such country in ancient times for wheat, barley, millet, and sesame;[25] tamarisks, poplars, and palms; here and there heavy jungle; with flashing streams and canals thickly athwart the whole, and all shining the more brilliantly for the interrupting patches of scurvy, nitrous soil, and the grey sandy setting of the desert with its dry scrub. The possible fertility of Chaldea is incalculable. But there are drawbacks. Bounded to the north by so high a tableland, to the south and south-west by a superheated gulf and broad desert, Mesopotamia is the scene of violent changes of atmosphere. The languor of the flat country, the stagnancy and sultriness of the air, of which not only foreigners but the natives themselves complain, is suddenly invaded by southerly winds, of tremendous force and laden with clouds of fine sand, which render the air so dense as to be suffocating, and "produce a lurid red haze intolerable to the eyes." Thunderstorms are frequent, and there are very heavy rains. But the winds are the most tremendous. In such an atmosphere we may perhaps discover the original shapes and sounds of Ezekiel's turbulent visions--_the fiery wheels; the great cloud with a fire infolding itself; the colour of amber_, with _sapphire_, or lapis lazuli, breaking through; _the sound of a great rushing_. Also the Mesopotamian floods are colossal. The increase of both Tigris and Euphrates is naturally more violent and irregular than that of the Nile.[26] Frequent risings of these rivers spread desolation with inconceivable rapidity, and they ebb only to leave pestilence behind them. If civilisation is to continue, there is need of vast and incessant operations on the part of man.
Thus, both by its fertility and by its violence, this climate--before the curse of God fell on those parts of the world--tended to develop a numerous and industrious race of men, whose numbers were swollen from time to time both by forced and by voluntary immigration. The population must have been very dense. The triumphal lists of Assyrian conquerors of the land, as well as the rubbish mounds which to-day cover its surface, testify to innumerable villages and towns; while the connecting canals and fortifications, by the making of them and the watching of them, must have filled even the rural districts with the hum and activity of men. Chaldea, however, did not draw all her greatness from herself. There was immense traffic with East and West, between which Babylon lay, for the greater part of antiquity, the world's central market and exchange. The city was practically a port on the Persian Gulf, by canals from which vessels reached her wharves direct from Arabia, India and Africa. Down the Tigris and Euphrates rafts brought the produce of Armenia and the Caucasus; but of greater importance than even these rivers were the roads, which ran from Sardis to Shushan, traversed Media, penetrated Bactria and India, and may be said to have connected the Jaxartes and the Ganges with the Nile and the harbours of the Ægean Sea. These roads all crossed Chaldea and met at Babylon. Together with the rivers and ocean highways, they poured upon her markets the traffic of the whole ancient world.