The canal to which this king boasts of having given his name, the _Nahar-Hammourabi_, was called in later days the royal canal, _Nahar-Malcha_. Herodotus saw and admired it, its good condition was an object of care to the king himself, and we know that it was considerably repaired by Nebuchadnezzar. It may be compared to a main artery; smaller vessels flowed from it right and left, throwing off in their turn still smaller branches, and ending in those capillaries which carried refreshment to the roots of each thirsty palm. Even in our day the traveller in the province of Bagdad may follow one of these ancient beds for an hour or two without turning to the right or the left, and their banks, though greatly broken in many places, still rise above the surrounding soil and afford a welcome causeway for the voyager across the marshy plains.[66] All these apparent accidents of the ground are vestiges left by the great hydraulic works of that Chaldee Empire which began to loom through the shadows of the past some twenty years ago, and has gradually been taking form ever since. When civilization makes up its mind to re-enter upon that country, nothing more will be needed for the re-awakening in it of life and reproductive energy, than the restoration of the great works undertaken by the contemporaries of Abraham and Jacob. * * * * * According to all appearance it was the Egyptian conquest about sixteen centuries B.C., that led to the partition of Mesopotamia. Vassals of Thothmes and Rameses, called by Berosus the "Arab kings," sat upon the throne of Babylon. The tribes of Upper Mesopotamia were farther from Egypt, and their chiefs found it easier to preserve their independence. At first each city had its own prince, but in time one of these petty kingdoms absorbed the rest, and Nineveh became the capital of an united Assyria. As the years passed away the frontiers of the nation thus constituted were pushed gradually southwards until all Mesopotamia was brought under one sceptre. This consummation appears to have been complete by the end of the fourteenth century, at which period Egypt, enfeebled and rolled back upon herself, ceased to make her influence felt upon the Euphrates. Even then Babylon kept her own kings, but they had sunk to be little more than hereditary satraps receiving investiture from Nineveh. Over and over again Babylon attempted to shake off the yoke of her neighbour; but down to the seventh century her revolts were always suppressed, and the Assyrian supremacy re-established after more or less desperate conflicts.