Lysander

Whenever, then, they wish to send some secret and important message, they make a scroll of parchment long and narrow, like a leathern strap, and wind it round their scytale, leaving no vacant space thereon, but covering its surface all round with the parchment. After doing this, they write what they wish on the parchment, just as it lies wrapped about the scytale; and when they have written their message, they take the parchment off and send it, without the piece of wood, to the commander.

He, when he has received it, cannot otherwise get any meaning out of it,—since the letters have no connection, but are disarranged,—unless he takes his own scytale and winds the strip of parchment about it, so that, when its spiral course is restored perfectly, and that which follows is joined to that which precedes, he reads around the staff, and so discovers the continuity of the message. And the parchment, like the staff, is called scytale, as the thing measured bears the name of the measure.

But Lysander, when the dispatch-scroll reached him at the Hellespont, was much disturbed, and since he feared the denunciations of Pharnabazus above all others, he hastened to hold a conference with him, hoping to compose their quarrel. At this conference he begged Pharnabazus to write another letter about him to the magistrates, stating that he had not been wronged at all, and had no complaints to make.

But in thus playing the Cretan against a Cretan, as the saying is, he misjudged his opponent. For Pharnabazus, after promising to do all that he desired, openly wrote such a letter as Lysander demanded, but secretly kept another by him ready written. And when it came to putting on the seals, he exchanged the documents, which looked exactly alike, and gave him the letter which had been secretly written.