The girl seemed to recognize that primitive sound and her face turned a deeper red. But she stepped a pace forward. "Mister--ah--Ketrik, you have saved my people and have earned our undying thanks! But what about the Perlacs--do you think they'll be coming back again?" The robot chuckled. "Not for a long time! Certainly not when they know I'm around. Those babies have given me a wide berth so far." He added: "I've been intending to pay a visit to your side of the world, but I could tell those dark-skinned brutes were up to something. I decided to hang around and await developments." "But Ketrik"--Janus hesitated--"what's this about your body?" "Don't worry, it's safe. This is only the mental part of me. Sure, there's a huge temple about ten miles back, with dozens more of these robots standing around idle." A sudden thought occurred. "Want to take a look? I could carry you across the heavy gravity." "No thanks!" Janus declined. "My scientific interest doesn't go that far. Maybe the Professor, here--" "Sure!" Brownell came forward, eager. "I'll go too," Mark said. "I'd like to see how those robots work." Ketrik extended a huge hand. Brownell and Mark clung tightly as it swung them up. With the two men perched on its shoulders, the robot went striding back through the forest. The temple, massive and pillared, rested in a wide clearing. They saw the robots, dozens of them lining the walls. The quartz discs of their eyes were now dull and lifeless. And near each robot, fifty feet high in the wall, were alcoves. "Gravity here is normal!" Mark noticed suddenly. "Yes," Ketrik replied. "That's probably what saved my life. I crashed right through the roof!" They saw Ketrik's spacer on the floor below them, its nose and forward tubes crumpled beyond recognition. "I'll show you my body." He strode to one of the alcoves, and the men stepped from his shoulders onto a stone ledge. Before them was a thick glass coffin. Resting in it was the material Ketrik! * * * * * It was a large body, as large as Janus, but clean shaven. The blue eyes were open and staring, and even in this suspended state there seemed to be a quality of recklessness, even amusement, about them. "How do you get the mental self into the robot?" Brownell asked. "Damned if I know how it works," there was almost a shrug in Ketrik's robot voice. "I just experimented with the thing." He just experimented! Mark marvelled at this man.