A few minutes after the outer airlock was opened, the airlock of the alien ship folded back also. Rubberized devices rolled out and contacted the Earth lifeboat, sealing off both entrances from the vacuum of space. Air hissed into the interlocking passageway between the two craft. In the alien craft's lock, an inner door opened. Again Lesbee held his breath. There was a movement in the passageway. A creature ambled into view. The being came forward with complete assurance, and pounded with something he held at the end of one of his four leathery arms on the hull. The creature had four legs and four arms, and a long thin body held straight up. It had almost no neck, yet the many skin folds between the head and the body indicated great flexibility was possible. Even as Lesbee noted the details of its appearance, the being turned his head slightly, and its two large expressionless eyes gazed straight at the hidden wall receptor that was photographing the scene, and therefore straight into Lesbee's eyes. Lesbee blinked at the creature, then tore his gaze away, swallowed hard, and nodded at Tellier. "Open up!" he commanded. The moment the inner door of the Earth lifeboat opened, six more of the four-legged beings appeared one after another in the passageway, and walked forward in the same confident way as had the first. All seven creatures entered the open door of the lifeboat. As they entered their thoughts came instantly into Lesbee's mind.... * * * * * As Dzing and his boarding party trotted from the small Karn ship through the connecting airlock, his chief officer thought a message to him. "Air pressure and oxygen content are within a tiny percentage of what exists at ground level on Karn. They can certainly live on our planet." Dzing moved forward into the Earth ship, and realized that he was in the craft's control chamber. There, for the first time, he saw the men. He and his crew ceased their forward motion; and the two groups of beings--the humans and the Karn--gazed at each other. The appearance of the two-legged beings did not surprise Dzing. Pulse viewers had, earlier, penetrated the metal walls of the lifeboat and had accurately photographed the shape and dimension of those aboard. His first instruction to his crew was designed to test if the strangers were, in fact, surrendering. He commanded: "Convey to the prisoners that we require them as a precaution to remove their clothing." ... Until that direction was given, Lesbee was still uncertain as to whether or not these beings could receive human thoughts as he was receiving theirs. From the first moment, the aliens had conducted their mental conversations _as if_ they were unaware of the thoughts of the human beings. Now he watched the Karn come forward. One tugged suggestively at his clothing. And there was no doubt. The mental telepathy was a one-way flow only--from the Karn to the humans.