The little man's face took on a rapt look, in which wonder and fear seemed to be blended. With a sweep of his hand he included the whole series of photographs in a comprehensive glance, and then, settling his gaze upon a particularly bizarre object in the center, he began to speak aloud, although there was nobody to listen to him. "My God!" he said. "That's it! That Lick photograph of the Lord Rosse Nebula is its very image, except that there's no electric fire in it. The same great whirl of outer spirals, and then comes the awful central mass--and we're going to plunge straight into it. Then quintillions of tons of water will condense on the earth and cover it like a universal cloudburst. And then good-by to the human race--unless--unless--I, Cosmo Versál, inspired by science, can save a remnant to repeople the planet after the catastrophe." Again, for a moment, he closed his eyes, and puckered his hemispherical brow, while, with drawn-up knees, he seemed perilously balanced on the high stool. Several times he slowly shook his head, like a dreaming owl, and when his eyes reopened their fire was gone, and a reflective film covered them. He began to speak, more deliberately than before, and in a musing tone: "What can I do? I don't believe there is a mountain on the face of the globe lofty enough to lift its head above that flood. Hum, hum! It's no use thinking about mountains! The flood will be six miles deep--six miles from the present sea-level; my last calculation proves it beyond all question. And that's only a minimum--it may be miles deeper, for no mortal man can tell exactly what'll happen when the earth plunges into a nebula. "We'll have to float; that's the thing. I'll have to build an ark. I'll be a second Noah. But I'll advise the whole world to build arks. "Millions might save themselves that way, for the flood is not going to last forever. We'll get through the nebula in a few months, and then the waters will gradually recede, and the high lands will emerge again. It'll be an awful long time, though; I doubt if the earth will ever be just as it was before. There won't be much room, except for fish--but there won't be many inhabitants for what dry land there is." Once more he fell into silent meditation, and while he mused there came a knock at the door. The little man started up on his seat, alert as a squirrel, and turned his eyes over his shoulder, listening intently. The knock was repeated--three quick sharp raps. Evidently he at once recognized them. "All right," he called out, and, letting himself down, ran swiftly to the door and opened it. A tall, thin man, with bushy black hair, heavy eyebrows, a high, narrow forehead, and a wide, clean shaven mouth, wearing a solemn kind of smile, entered and grasped the little man by both hands. "Cosmo," he said, without wasting any time on preliminaries, "have you worked it out?" "I have just finished." "And you find the worst?"