The Torquasians were not looking in the direction of the forest. All eyes had been upon the figures of the girl and their jeddak, and loud was the hideous laughter that rang out in appreciation of the wit of the green emperor's reply to his prisoner's appeal for liberty.
Carthoris had covered about half the distance between the forest and the green warriors, when a new factor succeeded in still further directing the attention of the latter from him.
Upon a high tower within the beleaguered city a man appeared. From his upturned mouth there issued a series of frightful shrieks; uncanny shrieks that swept, shrill and terrifying, across the city's walls, over the heads of the besiegers, and out across the forest to the uttermost confines of the valley.
Once, twice, thrice the fearsome soun
