The Seed of Evil

The development of subterrene ships had only just begun, and the Interstice was the fifth of the species, the others being prototypes. We had built her large, and we had built her powerful, for she was a warship. As yet, our nation was not at war, but we had enemies, and underground travel was an advantage to be quickly grasped.

And so, with Captain Joule in command, and I, Ross, as technical officer, we undertook to journey across the American continent from east to west, at a depth of ten miles. We passed beneath mountain ranges, beneath deserts and lakes, and slipped through every kind of geological formation. We tested for speed, steering—a complicated process where atom-polarisers are concerned—and depth control. Throughout, the equipment did not falter. The polariser fields stayed solidly in balance, even when we turned the Interstice first hard to port, then hard to starboard. The first fully operational subterrene ship was a success.

We were jubilant. We had no suspicion, as we approached the west coast, that a grave misfortune was soon to befall us, provoking us into reckless folly and causing us to be caught helpless in the grip of the mighty terrestrial planet.

I was with Captain Joule in the control cabin when he gave the order to surface at our prearranged location. On an even keel, the ship rose steadily.

At seven miles, a high-pitched hum sounded in the metal of the ship, rising rapidly to an unnerving screech as we ascended. At the same time, an urgent call came from Polariser Section.

The white-faced image of the chief engineer stared from the communicator screen. “Captain! An outside force is distorting the field! We can’t hold it!”

“Dive!” ordered Captain Joule.

Down we plunged, and immediately the terrifying sound ceased. As the Interstice shuddered to a stop, Joule questioned the engineer.

“What sort of a force?” he demanded.

“It was magnetic, very powerful. The noise we heard was due to every metallic atom on board vibrating on its polarised alignment. Another half minute and the whole ship would have been unpolarised!”

“Just how powerful is it?” Joules asked, puzzled.

The engineer shrugged. “The meters went haywire. I don’t understand it! We never guessed there were such intense energies at only five miles.”

Joule paused. “Weapons Section! Fire a torpedo straight up; but don’t set the fuse.”

Moments later, the Interstice made the first use of her armament. The torpedo lanced upwards, traced by polarised-field detectors. Shortly after it passed the five-mile limit, the missile vanished from the screen, and we received a series of strong shock-waves.

The torpedo’s polarisers had failed.

Still Joule was not satisfied. He ordered us up once more. Cautiously, we approached the danger level, and the shrieking of vibrating atoms hummed through the ship. Following on the pleas of Polariser Section, we sank back to a safe depth.

Now our confidence was gone. Retracing our route, we tried again with the same result. Then we made periodic attempts all the way back to the east coast, and for two weeks wandered over the continent, probing. The unbelievably strong phenomenon lay like a blanket under the land.

Myself, I doubted that it was magnetic in origin. Most likely, I thought, it was a magnetic effect produced by a freak stream of particles which had begun to flow while we were submerged.

Captain Joule was gloomy when I expressed this idea to him. “In that case,” he commented, “it might be artificial. It certainly is an effective weapon against a subterrene ship.”

But whatever the origin, the practical fact remained: we were unable to break surface.

The mood of the Interstice changed as we realised this. The excitement of our successful new enterprise vanished. I noticed for the first time how hollow the inside of the ship was, how every sound produced echoes in its cavities, and how dully its arched walls reflected the yellow lighting. It was easy to imagine how far within the Earth we were. I looked at Captain Joule, and knew that he had the same feelings.

Suddenly, I roared with laughter. “Well, we are trapped,” I said lightly. “What of it? All the better. This is our chance to defy those faint-hearts of the Navy Department with impunity.”

“What do you mean?” Joule asked.

“They forbade us, in the interests of caution, to take any of our ships deeper than ten miles at this stage. But since we cannot ascend, we will return to the surface the long way—through the diameter of the planet.”

He smiled, considering the proposal with characteristic brevity. I remembered the previous conversations we had held over the years, when the polariser fields were undergoing their slow, painful development in the Navy laboratories. Many daring schemes such as this had suggested themselves to us, and we were only biding our time in order to carry them out.

“Let us put it to the others,” he said at length, and spoke into the communicator, calling an officers’ conference.