you this far. "You are fit and capable to behold the Great One of Sirenia!" As Phyfe turned over the first metal sheet, the men looked at each other. It was Nichols, the semanticist, who said, "There are only two possibilities in a mind that would write a statement of that kind. Either it belonged to a truly superior being, or to a maniac. So far, in man's history, there has not been encountered such a superior being. If he existed, it would have been wonderful to have known him." Phyfe paused and peered with difficulty through the helmet of the spacesuit. He continued, "I live. I am eternal. I am in your midst, Unknown Friends, and to your hands falls the task of bringing speech to my voice, and sight to my eyes, and feeling to my hands. Then, when you have fulfilled your mighty task, you shall behold me and the greatness of the Great One of Sirenia." Enright, the photographer said, "What the devil does that mean? The guy must have been nuts. He sounds like he expected to come back to life." The feeling within Underwood was more than bearable. It was composed of surging anticipation and quiet fearfulness, and they mingled in a raging torrent. The men made no sound as Phyfe read on, "I shall live again. The Great One shall return, and you who are my Unknown Friends shall assist me to return to life. Then and only then shall you know the great secrets of the world of Sirenia which are a thousand times greater than your own. Only then shall you become mighty, with the secrets of Sirenia locked in my brain. By the powers I shall reveal, you shall become mighty until there are none greater in all the Universe." Phyfe turned the page. Abruptly he stopped. He turned to Underwood. "The rest of it is yours," he said. "What—?" Underwood glanced at the page of inscription. With difficulty he took up the reading silently. The substance of the writings had changed and here was a sudden wilderness of an alien science. Slowly he plodded through the first concepts, then skimmed as it became evident that here was material for days of study. But out of his hasty scanning there came a vision of a great dream, a dream of conquest of the eons, the preservation of life while worlds waned and died and flared anew. It told of an unknown radiation turned upon living cells,