The dynasties of Manetho were successive and not contemporaneous. This fact was one of the main results of the excavations and discoveries of Mariette Pasha. The old attempts to form artificial schemes of chronology—which, however, satisfied no one but their authors—upon the supposition that some of the dynasties reigned together are now discredited for ever. Every fresh discovery made in Egypt, which adds to our knowledge of ancient Egyptian history, makes the fact still more certain. There were epochs, indeed, when more than one line of kings claimed sway in the valley of the Nile, but when such was the case, Manetho selected what he or his authorities considered the sole legitimate dynasty, and disregarded every other. Of the two rival twenty-first dynasties which the monuments have brought to light, the lists of Manetho recognise but one, and the Assyrian rule in Egypt at a subsequent date is ignored in favour of the princes of Sais who were reigning at the same time. If, then, any reliance is to be placed on the length of time ascribed to the Hyksos dominion in the valley of the Nile, and if we are still to hold to the old belief of Christendom and see in the Hebrew wanderer into Egypt the Abram who contended against Chedor-laomer and the subject kings of Babylonia, it would have been about two centuries after the settlement of the Asiatic conquerors in the Delta that Abraham and Sarah arrived at their court. The court was doubtless held at Zoan, the modern Sân. Here was the Hyksos capital, and its proximity to the Asiatic frontier of Egypt made it easy of access to a traveller from Palestine. We are told in the Book of Numbers (xiii. 22) that Hebron was built seven years before Zoan in Egypt; and it may be that the building here referred to was that which caused Zoan to become the seat of the Hyksos power. Asiatic migration into Egypt was no new thing. On the walls of one of the tombs of Beni-Hassan there is pictured the arrival of thirty-seven Aamu or Asiatics “of Shu,” in the sixth year of Usertesen II. of the twelfth dynasty. Under the conduct of their chief, Ab-sha, they came from the mountains of the desert, bringing with them gazelles as well as kohl for the ladies of the court. Four women in long bright-coloured robes walk between groups of bearded men, and two children are carried in a pannier on a donkey’s back. The men are armed with bows, their feet are shod with sandals, and they wear the vari-coloured garments for which the people of Phœnicia were afterwards famed.