The body of the _odlat_ lay where it had fallen the night before, headless and beginning to stiffen. The dominant race of Mars could use little of this altogether useless and dangerous beast, namely the ears and eyeballs, and if the animal were not too old, the tail. This fierce old reprobate was entirely worthless therefore, and Peetn dragged it out into the desert and threw it into a pit. It could not be left lying near his hollow to draw other _odlats_ to the spot. He returned from his errand and prepared for another day at his appointed duties. The routine of caring for a Martian water-station is neither complicated nor arduous, being hardly more than a daily inspection tour. No Martian alive understood the methods or mechanisms which drew and pumped water from the massive ice-cap into the pool of the colony; no one could alter the flow of liquid through the pipes, or shut it off, for the valves had long ago corroded into their seats. Even the inspection was a mere gesture. * * * * * Peetn always started his rounds in the underground pump room, partly because most of the machinery was there, but mostly because of a subconscious certainty that there something was wrong. Somehow the conglomeration of squeaks, hisses, and shudders suggested things that shouldn't be. Day after day he had gone over the maze of pipes and cylinders, looking for a dreaded break, but always he found everything the way he had left it the night before. He couldn't know of oilless bearings burning slowly out during the centuries. The Martian artificers had built for incredible durability in that long-gone age of Martian glory, but they had not anticipated the mining of the last drop of oil or the last flake of graphite, which had occurred millennium before Peetn's time. Once again he began to go over the machinery which he didn't vaguely understand. In the center of the floor squatted a huge, inscrutable mass of metal from which plumed the beginning of all the pipes. Peetn traced with his sight organs the spidery lengths of hard, grey tubing to where they disappeared into the housings of the chugging pumps. It was the pumps which emitted the disturbing noises most of all. Peetn stuck his head close and listened to the discords in their tune. It sounded like rasping, like two raw bones being rubbed together under the flesh. He shook his bald head sadly and let his tentacle-tips flicker lightly over the smooth metal. As long as they didn't stop-- He watched the four bulky pipes crawl along the floor and up the wall, where they pushed through the ceiling into the valve-house above. He glanced over the gauges, meaningless to him, but still faithfully recording the surge of water passing through the pipes. It had lessened by about four-fifths since this station had been in operation, but nobody noticed the difference. Those that had seen the greater flow were less than dust these ages past.