Then as they were suffering hardship for a long time and many were falling on both sides, and especially on that of the Persians, Amasis the commander of the land-army contrived as follows:⁠—perceiving that the Barcaians were not to be conquered by force but might be conquered by guile, he dug by night a broad trench and over it he laid timber of no great strength, and brought earth and laid it above on the top of the timber, making it level with the rest of the ground: then at daybreak he invited the men of Barca to a parley; and they gladly consented, and at last they agreed to make a treaty: and the treaty they made with one another was taken over the hidden trench, namely that so long as this earth should continue to be as it was, so long the oath should remain firm, and that the men of Barca should promise to pay tribute of due amount to the king, and the Persians should do no further violence to the men of Barca. 728