He was going through the business of drawing concentric circles in the sand, pointing at the third orbit away from the Sun and thumping his chest. The crowd around us kept growing as more Martians emerged from the dome buildings to see what was going on. Down the winding ramps of the buildings on our side of the wide, sandy street they came--and from the buildings on the other side of the street, plodding through the sand, blinking brown eyes at us, not making a sound. Allenby pointed at the third orbit and thumped his chest. The chief squeaked and thumped his own chest and pointed at the copperish band around his head. Then he pointed at Allenby. "I seem to have conveyed to him," Allenby said dryly, "the fact that I'm chief of our party. Well, let's try again." He started over on the orbits. He didn't seem to be getting anyplace, so the rest of us watched the Martians instead. A last handful was straggling across the wide street. "Curious," said Gonzales. "Note what happens when they reach the center of the street." Each Martian, upon reaching the center of the street, glanced at his feet--just for a moment--without even breaking stride. And then came on. "What can they be looking at?" Gonzales wondered. "The chief did it too," Burton mused. "Remember when he first came toward us?" We all stared intently at the middle of the street. We saw absolutely nothing but sand. The Martians milled around us and watched Allenby and his orbits. A Martian child appeared from between two buildings across the street. On six-inch legs, it started across, got halfway, glanced downward--and came on. "I don't get it," Burton said. "What in hell are they _looking_ at?" The child reached the crowd and squeaked a thin, high note. A number of things happened at once. * * * * * Several members of the group around us glanced down, and along the edge of the crowd nearest the center of the street there was a mild stir as individuals drifted off to either side. Quite casually--nothing at all urgent about it. They just moved concertedly to get farther away from the center of the street, not taking their interested gaze off us for one second in the process. Even the chief glanced up from Allenby's concentric circles at the child's squeak. And Randolph, who had been fidgeting uncomfortably and paying very little attention to our conversation, decided that he must answer Nature's call. He moved off into the dunes surrounding the village. Or rather, he started to move. The moment he set off across the wide street, the little Martian chief was in front of him, brown eyes wide, hands out before him as if to thrust Randolph back. Again six safeties clicked. The Martians didn't even blink at the sudden appearance of our guns. Probably the only weapon they recognized was a club, or maybe a rock. "What can the matter be?" Randolph said.