Stanton cursed softly: "Damn Moriarity and his rocket ship. Damn Sweeney for getting killed and damn and double-damn the World Congress for declaring war on Mars!" He felt like a murderer, though he knew he was no more than a slightly pacifistic young exploring archaeologist. Annamarie nodded sympathetically but pointed at the screen. Stanton looked again and his imprecations were forgotten as he brought his mind to the problem of translating another of the strangely referential passages:
"At this time the Under-Eaters launched a bombing campaign on several of the underground cities. A number of subterranean-caves were linked with the surface through explosion craters and many of the sinister creations fumbled their way to the surface. A corps of technologists prepared to re-seal the tunnels of the Revived, which was done with complete success, save only in (an untranslatable place-name) where several Under-Eaters managed to wreak great havoc before being slain or driven back to their tunnels. The ravages of the Twice-Born, however, were trivial compared to the deaths resulting from the mind diseases fostered by the flying ships of the Under-Eaters, which were at this time …"
The archaeologist frowned. There it was again. Part of the time "Under-Eaters" obviously referred to the Earthmen, the rest of the time it equally obviously did not. The text would limp along in styleless, concise prose and then in would break an obscure reference to the "Creations" or 'twice-Born" or "Raging Glows."
"Fairy tales for the kiddies," said Annamarie Hudgins, snapping off the scanner.
Stanton replied indirectly: "Put it in the knapsack. I want to take it back and show it to some of the others. Maybe they can tell me what it means." He swept a handful of other reading-bobbins at random into the knapsack, snapped it shut, and straightened. "Lead on, Mac-Hudgins," he said.
Of the many wonders of the red planet, the one that the exploration party had come to appreciate most was the colossal system of subways which connected each of the underground cities of Mars.
With absolute precision the web of tunnels and gliding cars still functioned, and would continue to do so until the central controls were found by some Earthman and the vast propulsive mechanisms turned off.
The Mars-Tube was electrostatic in principle. The perfectly round tunnels through which the subway sped were studded with hoops of charged metal. The analysis of the metal hoops and the generators for the propulsive force had been beyond Earthly science, at least as represented by the understaffed exploring party.
Through these hoops sped the single-car trains of the Mars-Tube, every four minutes through every hour of the long Martian day. The electrostatic emanations from the hoops held the cars nicely balanced against the pull of gravity; save only when they stopped for the stations, the cars never touched anything more substantial than a puff of air. The average speed of the subway, stops not included, was upwards of five hundred miles an hour. There were no windows in the cars, for there would have been nothing to see through them but the endless tunnel wall slipping smoothly and silently by.
So easy was the completely automatic operation that the men from Earth could scarcely tell when the car was in motion, except by the signal panel that dominated one end of the car with its blinking lights and numerals.
Stanton led Annamarie to a station with ease and assurance. There was only one meaning to the tear-drop-shaped guide signs of a unique orange color that were all over Mars. Follow the point of a sign like that anywhere on Mars and you'd find yourself at a Mars-Tube station—or what passed for one.
Since there was only one door to a car, and that opened automatically whenever the car stopped at a station, there were no platforms. Just a smaller or larger anteroom with a door also opening automatically, meeting the door of the tube-car.
A train eventually slid in, and Stanton ushered Annamarie through the sliding doors. They swung themselves gently on to one of the excessively broad seats and immediately opened their notebooks. Each seat had been built for a single Martian, but accommodated two Terrestrials with room to spare.
At perhaps the third station, Annamarie, pondering the implications of a passage in the notebook, looked up for an abstracted second and froze. "Ray," she whispered in a strangled tone. "When did that come in?"
Stanton darted a glance at the forward section of the car, which they had ignored when entering. Something—something animate—was sitting there, quite stolidly ignoring the Terrestrials. "A Martian," he whispered to himself, his throat dry.
It had the enormous chest and hips, the waspish waist and the coarse, bristly hairs of the Martians. But the Martians were all dead.
"It's only a robot," he cried more loudly than was necessary, swallowing as he spoke. "Haven't you seen enough of them to know what they look like by now?"
"What's it doing here?" gulped Annamarie, not over the fright.
As though it were about to answer her question itself, the thing's metallic head turned, and its blinking eyes swept incuriously over the humans. For a long second it stared, then the dull glow within its eye-sockets faded, and the head turned again to the front. The two had not set off any system of reflexes in the creature.
"I never saw one of them in the subway before," said Annamarie, passing a damp hand over her sweating brow.
Stanton was glaring at the signal panel that dominated the front of the car. "I know why, too," he said. "I'm not as good a linguist as I thought I was—not even as good as I ought to be. We're on the wrong train—I read the code-symbol wrong."
Annamarie giggled. "Then what shall we do—see where this takes us or go back?"
"Get out and go back, of course," grumbled Stanton, rising and dragging her to her feet.
The car was slowing again for another station. They could get out, emerge to the surface, cross over, and take the return train to the library.
Only the robot wouldn't let them.
For as the car was slowing, the robot rose to its feet and stalked over to the door. "What's up?" Stanton whispered in a thin, nervous voice. Annamarie prudently got behind him.
"We're getting out here anyhow," she said. "Maybe it won't follow us."
But they didn't get out. For when the car had stopped, and the door relays clicked, the robot shouldered the humans aside and stepped to the door.
But instead of exiting himself, the robot grasped the edge of the door in his steel tentacles, clutched it with all his metal muscles straining, and held it shut!
"Damned if I can understand it," said Stanton. "It was the most uncanny thing—it held the door completely and totally shut there, but it let us get out as peaceful as playmates at the next stop. We crossed over to come back, and while we were waiting for a return car I had time to dope out the station number. It was seventh from the end of the line, and the branch was new to me. So we took the return car back to the museum. The same thing happened on the trip back—robot in the car; door held shut."
"Go on," said Ogden Josey, Roentgenologist of the expedition. "What happened then?"
"Oh. We just went back to the library, took a different car, and here we are."
"Interesting," said Josey. "Only I don't believe it a bit."
"No?" Annamarie interrupted, her eyes narrowing. "Want to take a look?"
"Sure."
"How about tomorrow morning?"
"Fine," said Josey. "You can't scare me. Now how about dinner?"
He marched into the mess hall of the expedition base, a huge rotunda-like affair that might have been designed for anything by the Martians, but was given its present capacity by the explorers because it contained tables and chairs enough for a regiment. Stanton and Annamarie lagged behind.
"What do you plan to do tomorrow?" Stanton inquired. "I don't see the point of taking Josey with us when we go to look the situation over again."