They had started up-slope when Nymani cried out. A white bulk, hard to distinguish in that light against the gray of the earth, headed after them. Dane had a fleeting glimpse of curled tusks, of an open mouth, raw-red and wide enough to engulf his whole head, of shaggy legs driving at an unbelievable pace. Asaki snapped a beam from the needler. The white monster roared and came on. They dived for the scant cover offered as the graz bull died, not two yards away from the Chief Ranger, its heavy body skidding along the earth with the force of its speed as it went down. "That did it!" Jellico sighted coolly with his blaster as a second bull, fighting mad, tore from the jungle and pounded at them. Behind it a third tusked head thrust out of the brush, large eyes searched for an enemy. Dane studied the dead bull, but the animal did not come to life this time. These were not hallucinations. And the malignancy of the rock apes, the cunning of the native Khatkan lion, were pallid things compared to a graz herd on the rampage. The second bull yelped with an almost canine complaint as Jellico's blaster caught it head-on. Blinded, the beast blundered ahead, climbing the mountain side. The third met a ray from Nymani's needler. But the Chief Ranger leaped from behind his sheltering rock to the one where the captain had taken refuge and pulled him into the open. "They must not corner us here!" Jellico agreed to that. "Come on!" he barked to Tau and Dane. They fled along a rough way, trying to gain altitude, but finding a rising cliff wall which could not be easily climbed. Two more graz went down, one badly wounded, one safely dead. Behind them more white heads came from the brush. What original cause had started the stampede the fugitives could not guess, but now the fear and anger of the animals were centering upon them. And, in spite of their efforts, the party was being herded into a pocket between the jungle below, where the main body of graz crashed along, and a steep wall. Given time to find the necessary finger and toe holds, a man might climb that wall, but they could not attempt it now. The portion of ledge on which they ran, stopped to fire, and then ran on again, angled to the southeast. And so they came to its end quickly, a drop ending in a plain of yellow-gray mud studded with clumps of bleached vegetation which led, like steppingstones, toward a tangle of matted, sickly looking plants and reeds. "All right," Tau faced around, "what do we do now? Space lift? And using what for wings or jets?" As if the graz could sense that they now had their victims safely cornered, what must have been a goodly segment of the herd hooked their way from the jungle and started up. Puffing, digging in those sturdy legs which had to take the massive weight of their barrel-shaped bodies, they made their way determinedly up-grade. One might almost believe that they had intelligently planned this end for their drive.