There was powder in the homes. In one home they found a heap of the gray stuff in front of a cookstove which was still warm, and another heap on a chair and on the floor under the chair. It was as if a woman and the man for whom she'd been preparing a meal had gone _poof_, in an instant. The crew member who'd been on watch and reported the lights said later they could have been atmospherics. The skipper himself had seen the movement along the roads; he maintained a dignified silence. It had been a highly developed little world and the buildings were incredibly old. The weather had beaten at them, rounding their edges and softening their colors, but they were as sturdy as if they'd been built last week. All the cities on the little world were similar. And all were dead. The _Pringle_ flew over a dozen of them, then returned to the big one near the plain where the ship had come down originally. The tallest building in each city was ornate out of all proportion to the rest. The researchers reasoned that this was the palace, or seat of government. Each of these buildings had a network of metal tubing at its peak. Where there were great distances between cities, tall towers rose from the plains or sat on tops of mountains, each with a similar metal network at the apex. The communications chief guessed that they were radio-video towers but he was proved wrong. There were no radio or television sets anywhere, or anything resembling them. Still, it was obvious that they were a kind of communications device. Doc Braddon got part of the answer from some of the gray dust he'd performed an "autopsy" on. The dust had been found in a neat mound at the bottom of a large metal container on the second-story of a medium-sized dwelling. Doc theorized that one of the people had been taking some sort of waterless bath in the container when the dust death came. The remains were thus complete, not scattered or intermingled as most of the others were. Doc sorted the particles as best he could and found two types, one definitely inorganic. He conferred with Rosco on the inorganic residue. Rosco thought this might be the remains of a tiny pararadio transceiver. Possibly each of the people had carried one around with him, or built into him. "We're only guessing that they were people," Doc said cautiously, "though it would seem safe to assume it, since we've found dust everywhere people could be expected to be. What we need is a whole corpse." While patrols were out looking for bodies Rosco tested his theory by sending a radio signal from one of the towers and watching a feeble reaction in the dust. "If we can assume that they were people," Rosco said, "they apparently communicated over distances by personalized radio. Maybe through a mechanism built into the skull. Would that mean there wouldn't be any written language, Ernest?"