extras. Anything other than irmium would melt at once, of course." "We have less than eight hours of pure air in the tanks," DeCastros said. "Have you thought of that, you rattle-head?" "Yes, sir," Mr. Wordsley said. "And if I might be allowed to speculate, Captain, I would say that we are finished unless we can make a planetfall. Only then would I be able to remove the lower port tube, weld the cavity, seal the ship and fumigate." "We're four weeks from the nearest star, Fomalhaut; you know that as well as I do." "I was thinking," said Mr. Wordsley, with a sudden, suffused glow in his cheeks, "of Avis Solis." Mr. Wordsley shut his eyes as they were going down, because he wanted to open them and surprise himself, at the moment of landing. But the cold, white glare was more intense than he had expected, and he had to shut them again and turn on the polarizer. He buckled on his tools and the carbo-torch, and went down the ladder. He dropped at once to his knees, not because of the gravity, which was not bad, but because of a compulsion to get his face as near to the surface of Avis Solis as possible. It was even lovelier than when seen from space. He trod upon a sea of diamonds. A million tiny winkings and scintillations emanated from each crystal. A million crystals lay beneath the sole of his boot. He would rather not have stepped on them, but it could not be helped. They were everywhere. Mr. Wordsley gloated. DeCastros dropped like a huge slug from the ladder behind him. "What are you doing?" he said. "Picnicking?" "I was tying my shoe," Mr. Wordsley said, and got to work with an alacrity that was wholly false. The dark sun-satellites rose by twos and threes over the horizon, felt rather than clearly seen. There was a dry wind that blew from the glittering wasteland and whistled around the base of the rockets as Mr. Wordsley labored on and on. Captain DeCastros had withdrawn to a level outcropping of igneous rock and sat staring at the nothing where the greenish-black sky met the pale gray horizon. The tube was loosened on its shackles and presently fell, with a tinkling sound, upon the surface of Avis Solis. The opening was sealed and welded. Mr. Wordsley was practically finished, but he did not hurry. Instead, he went around to the opposite