"Sit down. Hold fast!" Even as Robur spoke, Croft sensed his full meaning and planned. Under his touch the engine roared. He let in his clutch with a jerk which shot the car into motion with a leap. Death lay ahead of the careening carriage behind the beasts he had frightened out of their driver's control. Whether Chythron alone, or Lakkon or the prince and his daughter rode in that rocking conveyance it was his place to do what he could. Leaving the road with a lurch which nearly unseated Robur and himself, he swung the car about and increased its speed. He had told Jadgor he would build an engine to outrun the Tamarizian gnuppa, and here at once was the test. True Croft thought not of that in any such fashion as he drove. His only fear was lest he fail to overhaul the flying beasts in time. His greatest fear was that Naia herself might be in that frantic rush toward death, hurtling to an end invoked at his hands. His soul sank in a sick wave of horror. Yet he set his lips and clenched his jaws and drove. Faster and faster leaped the roaring car behind the leaping things of flesh and blood he sought to overtake. And he was overtaking them now. He crossed the second road with a nerve-wracking swing and jolt. Unable to procure rubber for his wheels he had faced them with heavy leather some two inches thick, which lacked the resiliency of air. His arms ached from the wrench with which he crossed the road. But that past he gathered speed with every revolution of the wheels. "Faster! Zitu! Faster!" Robur urged at his side. "Faster, Jasor--the gorge is just ahead!" Croft made no reply. He was almost abreast of the carriage now. But he himself had seen the break in the surface of the flat across which he drove. He set his teeth till the muscles in his strong jaws bunched and drove toward it at top speed. His one hope was that the thing which had set the gnuppas into flight might be able to turn them back. And he was past them now! Past them, with the gorge directly ahead. He began to edge in upon them. He would stop them or turn them at any cost to himself. And the margin was scant. Nearer and nearer to the lip of the sheer descent he was forced to turn in order to hold his lead. "Jump! Save yourself!" His voice rose in a cry of warning to his companion in the car. The gorge was very close. He turned to parallel its course and found it angling off at a slant. And the gnuppas were turning, too--edging away from the thing they feared--edging, edging away. Croft edged with them, turning them more and more. Chythron was sawing on his reins. Suddenly the beasts stopped in a series of ragged lunges and stood quivering and panting. Croft stopped the car. "By Zitu! Jasor, you are a man!" He became conscious that Robur was still with him on the seat, and that he himself was aquiver in every limb.