To his surprise, Harry found himself acting as the leader of the expedition, and he continued in this capacity after they were established. The irony of the situation did not escape him; to all intents and purposes he was now ruling the very domain in which he had once languished as a prisoner. But with Wade and Chang and the others, he set up a provisional system which worked out very well. And proved very helpful, once the news reached them that open revolt had begun in the world outside. A battered 'copter landed one evening at dusk, and the wounded pilot poured out his message, then his life's blood. Angelisco was gone. Washington was gone. The Naturalists had struck, using the old, outlawed weapons. And it was the same abroad, according to the few garbled reports thereafter obtainable only _via_ ancient shortwave devices. From then on, nobody left the canyon except on weekly 'copter-lifts to the ranch grazing lands for fresh supplies. Fortunately, that area was undisturbed, and so were its laconic occupants. They neither knew nor cared what went on in the world outside; what cities were reported destroyed, what forces triumphed or went down into defeat, what activity or radioactivity prevailed. Life in the canyon flowed on, more peacefully than the river cleaving its center. There was much to do and much to learn. It was, actually, a monastic existence, compounded of frugality, abstinence, continence and devotion to scholarly pursuits. Within a year, gardens flourished; within two years herds grazed the grassy slopes; within three years cloth was being woven on looms in the ancient way and most of the homespun arts of an agrarian society had been revived. Men fell sick and men died, but the survivors lived in amity. Harry Collins celebrated his sixtieth birthday as the equivalent of a second-year student of medicine; his instructor being his own son. Everyone was studying some subject, acquiring some new skill. One-time rebellious natures and one-time biological oddities alike were united by the common bond of intellectual curiosity. It was, however, no Utopia. Some of the younger men wanted women, and there were no women. Some were irked by confinement and wandered off; three of the fleet of eleven 'copters were stolen by groups of malcontents. From time to time there would be a serious quarrel. Six men were murdered. The population dwindled to four hundred and twenty. But there was progress, in the main. Eventually Banning joined the group, from the ranch, and under his guidance the study-system was formalized. Attempts were made to project the future situation, to prepare for the day when it would be possible to venture safely into the outside world once again and utilize newly-won abilities.