This discovery is of first-rate importance as regards the early history of the Hebrews, and especially as to their relations with Egypt, their sojourn there, and the Exodus. If Abraham really came from Ur of Chaldæa, the seat of a very old civilization; and if his descendants really lived for 400 years or longer in Egypt, mixed up a good deal with the native population, and for a great part of the time treated with favour, and occupying, if the legend of Joseph be true, the highest posts in the land; and if they really left Egypt, as described in the Exodus, laden with the spoils of the Egyptians, and led by Moses, a priest of Heliopolis skilled in all the lore of that ancient temple, it is inconceivable that in a single generation they should have sunk to such a level as that of the half-savage Bedouins, as indicated by Petrie's researches. And yet who else could have been the barbarians whose inroad destroyed the walled city of the Amorites; and how well does this condition of rude savagery correspond with the bloodthirsty massacres, and the crude superstitions, which meet us at every turn in the traditions of the period between the departure from Egypt and the establishment of a monarchy, which have been used by the compilers of the Books of Exodus, Joshua, and Judges? If we are ever to know anything beyond legend and conjecture as to this obscure period, it is to the pick and the spade that we must look for certain information, and the exploration of mounds of ruined cities must either confirm or modify Petrie's inference as to the extreme rudeness of the nomad tribes who broke in upon the civilized inhabitants of older races. Another exploration by Mr. Flinders Petrie, that of the ruins of Pi-thom and Ramses, gives a certain amount of monumental confirmation to the statement in Exodus i. 2, that during the captivity of the Israelites in Egypt they were employed as slaves by Ramses II. in building two treasure cities, Ramses and Pi-thom. Some wall-paintings show slaves or forced labourers, of a Jewish cast of countenance, working at the brick walls under the sticks of taskmasters.