"Well, it's your neck." I turned to the native. "Don't be too hard on him," I said. "He's quite an important man." The Niobian nodded and grinned. "Don't worry, sir. He won't feel a thing. But I really wish to apologize for our rudeness. If conditions were different--" He paused and turned toward Bergdorf who was climbing into the 'copter with the oysters still in his hand. * * * * * I wasn't surprised that he didn't make it. In fact, I'd have been more surprised if he had. Heinz crumpled to the ground beside the ship. One of the natives came forward, took the oysters from his limp hand and threw them back into the lagoon. "All right," I said to the spokesman. "You fellows clobbered him, so now you can get him into the ship." "That is only fair," the native said. "We do not want to cause you any extra inconvenience." He gestured to his companions. Between them they got Bergdorf's limp body into the ship and strapped into one of the seats. They got out, I got in, and in a minute the two of us got out of there, going straight up through to overcast to get a celestial bearing for home. I kept looking at Bergdorf's limp body and grinning. It was nearly an hour later before Bergdorf woke up. "What hit me?" he asked fuzzily. "Subsonics," I said. "They should have scared you to death." "I fainted?" "Sure you did. You couldn't help it. They hit like a ton of brick." "They certainly do," he said ruefully. "They can kill," I said. "I've seen them do it. The Niobians generate them naturally, and they can focus them fairly well. Probably this quality was one of their forms of defense against predators in their early days. It's a survival trait; and when there are enough natives present to augment the impulses they can be downright nasty." Bergdorf nodded. "I know," he said. He stopped talking and looked out over the sun-drenched top of the overcast. "It looks like Tovan Harl wants to keep this oyster farm a private matter. In a way he's doing us a favor, but I'd still feel happier if I had one or two of those oysters." "Why do you need them?" "Well, I figured on getting a couple of the Navy's organic detectors and setting them for oyster protoplasm. You know how sensitive those gadgets are. There might be a small but significant change in oyster protoplasm since it has arrived here." "Well, you don't need to worry," I said. "I put one of your pets in my pocket before the natives showed up, so you've got what you need." I pulled the oyster out and handed it to him. It didn't look any the worse for its recent rough treatment. Bergdorf grinned. "I knew I could trust you, Chief. You're sneaky!" I laughed at him. * * * * *