The Nabataeans then sent to Antigonus to complain of this crafty attack being made upon Petra after they had received from him a promise of friendship. He endeavoured to put them off their guard by disowning the acts of his general; he sent them home with promises of peace, but at the same time sent forward his son Demetrius, with four thousand horse and four thousand foot, to take revenge upon them, and again seize their city. But the Arabs were this time upon their guard; the nature of the place was as unfavourable to the Greek arms and warfare as it was favourable to the Arabs; and these eight thousand men, the flower of the army, under brave Demetrius, were unable to force their way through the narrow pass into this remarkable city. Had Antigonus been master of the sea, he might perhaps have marched through the desert along the coast of the Mediterranean to Pelusium, with his fleet to wait upon his army, as Perdiccas had done. But without this, the only way that he could enter Egypt was through the neighbourhood of Petra, and then along the same path which the Jews are supposed to have followed; and the stop thus put upon the invasion of Egypt by this little city shows us the strength of Ptolemy's eastern frontier. Antigonus then led his army northward, leaving the kingdom of Egypt unattacked. This retreat was followed by a treaty of peace between these generals, by which it was agreed that each should keep the country that he then held; that Cassan-der should govern Macedonia until Alexander AEgus, the son of Alexander the Great, should be of age; that Lysimachus should keep Thrace, Ptolemy Egypt, and Antigonus Asia Minor and Palestine; and each wishing to be looked upon as the friend of the soldiers by whom his power was upheld, and the whole of these wide conquests kept in awe, added the very unnecessary article, that the Greeks living in each of these countries should be governed according to their own laws. All the provinces held by these generals became more or less Greek kingdoms, yet in no one did so many Greeks settle as in Lower Egypt. Though the rest of Egypt was governed by Egyptian laws and judges, the city of Alexandria was under Macedonian law. It did not form part of the nome of Hermopolites in which it was built. It scarcely formed a part of Egypt, but was a Greek state in its neighbourhood, holding the Egyptians in a state of slavery. In that city no Egyptian could live without feeling himself of a conquered race. He was not admitted to the privileges of Macedonian citizenship, while they were at once granted to every Greek, and soon to every Jew, who would settle there.