CHAPTER 75

Cyrus had captured this Astyages, who was his mother's father, and kept him prisoner, for a reason which I shall bring forward in another of my history. This capture formed the ground of quarrel between Cyrus and Croesus, in consequence of which Croesus sent his servants to ask the oracle if he should attack the Persians; and when an evasive answer came, fancying it to be in his favour, carried his arms into the Persian territory. When he reached the river Halys, he transported his army across it, as I maintain, by the bridges which exist there at the present day; but, according to the general belief of the Greeks, by the aid of Thales the Milesian. The tale is that Croesus was in doubt how he should get his army across, as the bridges were not made at that time, and that Thales, who happened to be in the camp, divided the stream and caused it to flow on both sides of the army instead of on the left only. This he effected thus: Beginning some distance above the camp, he dug a deep channel, which he brought round in a semicircle, so that it might pass to rearward of the camp; and that thus the river, diverted from its natural course into the new channel at the point where this left the stream, might flow by the station of the army, and afterwards fall again into the ancient bed. In this way the river was split into two streams, which were both easily fordable. It is said by some that the water was entirely drained off from the natural bed of the river. But I am of a different opinion; for I do not see how, in that case, they could have crossed it on their return.