The Earthling let his gaze travel up and down the woman's smooth-muscled form and said in an awed whisper, "I think you'd better accept the lady's generous offer. But--uh--I seem to have the wrong cabin--" "Are you Ray Ballantyne of Earth?" asked the woman. He pleaded guilty. "Then you belon vith us. I have looked at the passenyer lists. You may have the cot." "Th-thanks," shivered Ballantyne, sitting down on it. The Martian seemed to give the fight up as a bad job and allowed himself to be placed on the upper bunk. "To tink of it," he squeaked. "Tat I, te great Urushkidan of Ummunashektaru, should be man-handled by a sabage who does not know a logaritm from an exponent!" Urushkidan. Ballantyne knew the name of the Martian mathematician, the latter-day Gauss or Einstein, and stared as if this were the first Martian he had seen in his life. Urushkidan looked like any other of his race, at least to the inexperienced eye. A great gray-skinned cupola of a body balanced four feet high on the walking-tentacles, with the two slim, three-fingered arm-tentacles writhing from either side of a wide lipless mouth set beneath that torse. Big unwinking eyes behind horn-rimmed spectacles, flat nose, elephantine ears--"Not _the_ Urushkidan?" he gasped. "Tere is only _one_ Urushkidan," said the Martian. * * * * * The amazon sat down on her own bunk and laughed, a Homeric shout of laughter ringing between the metal walls and shivering the furniture. "Velcome, little Earthman," she cried. "You are cute, I think I vill like you. I am Dyann Korlas of Kathantuma." She grabbed his hand in a bone-cracking grip. "One of the Centaurians," said Ballantyne feebly. "Yes, so you call us." She opened her trunk and began unpacking. Ballantyne watched her with appreciation and some curiosity. He'd only seen the Alpha Centaurian visitors on television before now. She looked human enough externally, aside from a somewhat different convolution of the ears. Internally there were plenty of peculiarities, among them a skeletal and tissue structure considerably harder and denser than that of Homo Solis. Alpha Centauri III--or Varann, as its more advanced nation had decided to call it after learning from the terrestrial explorers that it was a planet--was Earth-like enough in a cool and bracing way, but it had half again the surface gravity. Sexual differentiation also varied a bit from the Solar norm. The Centaurian men were somewhat smaller and weaker than the women. They stayed at home and did the housework while their wives conducted the business. In the warlike culture of Kathantuma and its neighbor states that meant going out, cutting the other army into hamburger, and stealing everything which wasn't bolted down.