The general analogy among the population of Iran probably enabled the Persian conqueror with comparative ease to extend his empire to the east, after the conquest of Ekbatana, and to become the full heir of the Median kings. If we may believe Ctesias, even the distant province of Bactria had been before subject to those kings. At first it resisted Cyrus, but finding that he had become son-in-law of Astyages, as well as master of his person, it speedily acknowledged his authority. According to the representation of Herodotus, the war between Cyrus and Croesus of Lydia began shortly after the capture of Astyages, and before the conquest of Bactria. Croesus was the assailant, wishing to avenge his brother-in-law, to arrest the growth of the Persian conqueror, and to increase his own dominions. His more prudent counsellors in vain represented to him that he had little to gain, and much to lose, by war with a nation alike hardy and poor. He is represented as just at that time recovering from the affliction arising out of the death of his son. To ask advice of the oracle, before he took any final decision, was a step which no pious king would omit. But in the present perilous question, Croesus did more--he took a precaution so extreme, that if his piety had not been placed beyond all doubt by his extraordinary munificence to the temples, he might have drawn upon himself the suspicion of a guilty scepticism. Before he would send to ask advice respecting the project itself, he resolved to test the credit of some of the chief surrounding oracles--Delphi, Dodona, Branchidae near Miletus, Amphiaraus at Thebes, Trophonius at Labadeia, and Ammon in Libya. His envoys started from Sardis on the same day, and were all directed on the hundredth day afterward to ask at the respective oracles how Croesus was at that precise moment employed. This was a severe trial: of the manner in which it was met by four out of the six oracles consulted we have no information, and it rather appears that their answers were unsatisfactory. But Amphiaraus maintained his credit undiminished, while Apollo at Delphi, more omniscient than Apollo at Branchidae, solved the question with such unerring precision, as to afford a strong additional argument against persons who might be disposed to scoff at divination. No sooner had the envoys put the question to the Delphian priestess, on the day named, "What is Croesus now doing?" than she exclaimed in the accustomed hexameter verse, "I know the number of grains of sand, and the measures of the sea: I understand the dumb, and I hear the man who speaks not. The smell reaches me of a hard-skinned tortoise boiled in a copper with lamb's flesh--copper above and copper below." Croesus was awe-struck on receiving this reply. It described with the utmost detail that which he had been really doing, so that he accounted the Delphian oracle and that of Amphiaraus the only trustworthy oracles on