One palm impacted against Ermine's solar plexus, and the other against the muscle at the side of his neck, but not hard enough to kill. Ermine collapsed, starved for oxygen, while Sollenar silently cursed having been cured of murder. Then Sollenar turned and ran. Behind him Ermine's body struggled to draw breath by reflex alone. Moving as fast as he dared, Sollenar walked back and reached the taxi lock, pulling a respirator from a wall rack as he went. He flagged a car and gave his destination, looking behind him. He had seen nothing of Cortwright Burr since setting foot on Mars. But he knew that soon or late, Burr would find him. A few moments later Ermine got to his feet. Sollenar's car was well away. Ermine shrugged and went to the local broadcasting station. He commandeered a private desk, a firearm and immediate time on the IAB interoffice circuit to Earth. When his call acknowledgement had come back to him from his office there, he reported: "Sollenar is enroute to the Martian city. He wants a duplicate of Burr's device, of course, since he smashed the original when he killed Burr. I'll follow and make final disposition. The disorientation I reported previously is progressing rapidly. Almost all his responses now are inappropriate. On the flight out, he seemed to be staring at something in an empty seat. Quite often when spoken to he obviously hears something else entirely. I expect to catch one of the next few flights back." There was no point in waiting for comment to wend its way back from Earth. Ermine left. He went to a cab rank and paid the exorbitant fee for transportation outside Aresian city limits. * * * * * Close at hand, the Martian city was like a welter of broken pots. Shards of wall and roof joined at savage angles and pointed to nothing. Underfoot, drifts of vitreous material, shaped to fit no sane configuration, and broken to fit such a mosaic as no church would contain, rocked and slid under Sollenar's hurrying feet. What from Aresia had been a solid front of dun color was here a facade of red, green and blue splashed about centuries ago and since then weathered only enough to show how bitter the colors had once been. The plum-colored sky stretched over all this like a frigid membrane, and the wind blew and blew. Here and there, as he progressed, Sollenar saw Martian arms and heads protruding from the rubble. Sculptures. He was moving toward the heart of the city, where some few unbroken structures persisted. At the top of a heap of shards he turned to look behind him. There was the dust-plume of his cab, returning to the city. He expected to walk back--perhaps to meet someone on the road, all alone on the Martian plain if only Ermine would forebear from interfering. Searching the flat, thin-aired landscape, he tried to pick out the plodding dot of Cortwright Burr. But not yet. He turned and ran down the untrustworthy slope.