intimidating, but her build was magnificent in a statuesque, tiger-lithe way. She looked young, her skin smooth, and faintly golden, a heavy mass of shining bronze hair coiled about the haughtily lifted head. Her face was close to the ideal of an ancient Hellenic sculptor, clean straight lines, firm jaw, brilliant gray eyes under heavy brows. She wore a light cuirass over her tunic, sandals, a bat-winged helmet on her head. "It—ah—it's strange they'd put you in the same cabin with me," said Ballantyne hesitantly. "Oh, you are safe enough," she grinned. He flushed, reflecting that the ladies from Centauri were in little danger from any Solar man. Very likely it was the other way around. Then he recalled that their native titles translated into things like warrior, district-ruler, chief, and so on. With their arrogant indifference to mere exploration and ethnology, the Jovians had probably assumed that Dyann Korlas was male. Well, he wasn't going to enlighten them. He looked up to Urushkidan, who was morosely stuffing a big-bowled pipe. "Ah, I know of your work, of course," he said hesitantly. "I am—was—a nuclear engineer, so maybe I even have some appreciation of what it's about." The Martian preened. "Doubtless you have grasped it bery well," he said generously. "As well as any Eartman could, which is, of course, saying bery little." "But, if I may ask, sir, what are you doing here?" "Oh, I have an inbitation from te Jobian Academy of Science to lecture. Tey are commendably interested and seem to realise my fundamental importance. I will be glad to get off Eart. Te air pressure, te gravity, pfui!" "But a man, uh, Martian of your distinction—traveling third class—" "Oh, they sent me a first-class ticket, of course. But I turned it in, bought a tird class, and banked te difference." He scowled darkly at Dyann Korlas. "Tough if I must be treated so—Well." He shrugged. A Martian shrugging is quite a sight. "It is of no matter. We of Uttu—Mars as you insist on calling it—are so incomparably far advanced in te philosophic virtues of serenity, generosity, and modesty tat I can accept wit equanimity." "Oh," said Ballantyne. To the Centaurian, "And may I ask why you are going to Jupiter—ah—Miss Korlas?" "You may call me Dyann," she said sweetly, "and I vill call you Ray, so? I