mechanisms responded to the signal that would send it on its mission of destruction. A relay clicked, but imperceptibly slow in setting the proper course. On the instrument, far below, which checked the globe's new course the mistake was not noted.
The screen of the ship spiraling toward Topaz registered a path which would bring it into violent contact with the globe. They were still some hundreds of miles apart when the alarm rang. The pilot's hand clawed out at the bank of controls; under the almost intolerable pressure of their descent, there was so little he could do. His crooked fingers fell back powerlessly from the buttons and levers; his mouth was a twisted grimace of bleak acceptance as the beat of the signal increased.
One of the passengers forced his head around on the padded rest, fought to form words, to speak to his companion. The other was staring ahead at the screen, his thick lips wide and flat against his teeth in a snarl of rage.
"They . . . are . . . here. . . ."
Ruthven paid no attention to the obvious as stated by his fellow scientist. His fury was a red, pulsing thing inside him, fed by his own helplessness. To be pinned here so near his goal, set up as a target for a mere machine, ate into him like a stream of deadly acid. His big gamble would puff out in a blast of fire to light up Topaz's sky, with nothing left—nothing. On the armrest of his sling-seat his nails scratched deep.
The four men in the control cabin could only sit and watch, waiting for the rendezvous which would blot them out. Ruthven's flaming anger was a futile blaze. His companion in the passenger seat had closed his eyes, his lips moving soundlessly. The pilot and his assistant divided their attention between the screen, with its appalling message, and the controls they could not effectively use, feverishly seeking a way out in these last moments.
Below them in the bowels of the ship were those who would not know the end consciously—save in one compartment. In a padded cage a prick-eared head stirred where it rested on forepaws, slitted eyes blinked, aware not only of familiar surroundings, but also of the tension and fear generated by human minds and emotions levels above. A pointed nose raised, and growling rose from a throat covered with thick buff-gray hair.
The growl aroused another similar captive. Knowing yellow eyes met yellow eyes. An intelligence, which was not natural to the animal body which contained it, fought down instinct raging to send both those bodies hurtling at the fastenings of the twin cages. Curiosity and the ability to adapt had been bred into these creatures from time immemorial. Then something else had been added to sly and cunning brains. A step up had been taken—to weld intelligence to cunning, connect thought to instinct.
More than a generation earlier mankind had chosen barren desert—the "white sands" of New Mexico—as a testing ground for atomic experiments. Humankind could be barred, warded out of the radiation limits. The natural desert dwellers, four-footed and winged, could not be so controlled.
Thousands of years earlier, the first southward roving Amerindian tribes had met with their kind, a hunter of the open country, a smaller cousin of the wolf, whose natural abilities had made an indelible impression on the human mind. He appeared in countless Indian legends as the Shaper or the Trickster, sometimes friend, sometimes enemy. Godling for some tribes, father of all evil for others. In the wealth of tales the coyote, above all other animals, held pride of place.
Driven by the press of civilization into the badlands and deserts, fought with poison, gun, and trap, the coyote had survived, adapting to new ways with all his legendary cunning. Those who had reviled him as vermin had unwillingly added to the folklore which surrounded him, telling their own tales of robbed traps, skillful escapes. He continued to be a trickster, laughing on moonlit nights from the tops of ridges at