started to eat my shack right out from underneath my feet." Meek looked crestfallen. "Can't get near them, then," he said. "Sure you can," said Gus. "Why not?" "Well, a spacesuit's metal and...." "Got that all fixed up," said Gus. "You come back with me and I'll let you have a pair of stilts." "Stilts?" "Yeah. Wooden stilts. Them danged fool bugs don't know what wood is. Seem to be scared of it, sort of. You can walk right among them if you want to, long as you're walking on the stilts." Meek gulped. He could imagine what stilt walking would be like in a place where gravity was no more than the faintest whisper. III The bugs had dug a new set of holes, much after the manner of a Chinese checker board, and now were settling down into their respective places preparatory to the start of another game. For a mile or more across the flat surface of the rock that was Gus Hamilton's moss garden, ran a string of such game-boards, each one different, each one having served as the scene of a now-completed game. Oliver Meek cautiously wedged his stilts into two pitted pockets of rock, eased himself slowly and warily against the face of a knob of stone that jutted from the surface. Even in his youth, Meek remembered, he never had been any great shakes on stilts. Here, on this bucking, weaving rock, with slick surfaces and practically no gravity, a man had to be an expert to handle them. Meek knew now he was no expert. A half-dozen dents in his space armor was ample proof of that. Comfortably braced against the upjutting of stone, Meek dug into the pouch of his space gear, brought out a notebook and stylus. Flipping the pages, he stared, frowning, at the diagrams that covered them. None of the diagrams made sense. They showed the patterns of three other boards and the moves