In the open he halted them. "The girl will get upon the back of the one in front," announced the Englishman. "I will mount the other. She carries a sharp blade, and I carry this weapon that you know kills easily at a distance. If you disobey in the slightest, the instructions that I am about to give you, you shall both die. That we must die with you, will not deter us. If you obey, I promise to set you free without harming you. "You will carry us due west, depositing us upon the shore of the mainland--that is all. It is the price of your lives. Do you agree?" Sullenly the Wieroos acquiesced. Bradley examined the knots that held the rope to their ankles, and feeling them secure directed the girl to mount the back of the leading Wieroo, himself upon the other. Then he gave the signal for the two to rise together. With loud flapping of the powerful wings the creatures took to the air, circling once before they topped the trees upon the hill and then taking a course due west out over the waters of the sea. Nowhere about them could Bradley see signs of other Wieroos, nor of those other menaces which he had feared might bring disaster to his plans for escape--the huge, winged reptilia that are so numerous above the southern areas of Caspak and which are often seen, though in lesser numbers, farther north. Nearer and nearer loomed the mainland--a broad, parklike expanse stretching inland to the foot of a low plateau spread out before them. The little dots in the foreground became grazing herds of deer and antelope and bos; a huge woolly rhinoceros wallowed in a mudhole to the right, and beyond, a mighty mammoth culled the tender shoots from a tall tree. The roars and screams and growls of giant carnivora came faintly to their ears. Ah, this was Caspak. With all of its dangers and its primal savagery it brought a fullness to the throat of the Englishman as to one who sees and hears the familiar sights and sounds of home after a long absence. Then the Wieroos dropped swiftly downward to the flower-starred turf that grew almost to the water's edge, the fugitives slipped from their backs, and Bradley told the red-robed creatures they were free to go. When he had cut the ropes from their ankles they rose with that uncanny wailing upon their lips that always brought a shudder to the Englishman, and upon dismal wings they flapped away toward frightful Oo-oh. When the creatures had gone, the girl turned toward Bradley. "Why did you have them bring us here?" she asked. "Now we are far from my country. We may never live to reach it, as we are among enemies who, while not so horrible will kill us just as surely as would the Wieroos should they capture us, and we have before us many marches through lands filled with savage beasts."