When Cyrus reached the Gyndes river on his march to Babylon , which rises in the mountains of the Matieni and flows through the Dardanean country into another river, the Tigris , that again passes the city of Opis and empties into the Red Sea —when, I say, Cyrus tried to cross the Gyndes, which was navigable there, one of his sacred white horses dashed recklessly into the river trying to get through it, but the current overwhelmed him and swept him under and away. At this violence of the river Cyrus was very angry, and he threatened to make it so feeble that women could ever after cross it easily without wetting their knees. After uttering this threat, he paused in his march against Babylon , and, dividing his army into two parts, drew lines planning out a hundred and eighty canals running every way from either bank of the Gyndes; then he organized his army along the lines and made them dig. Since a great multitude was at work, it went quickly; but they spent the whole summer there before it was finished.