They faltered a moment when they saw each entrance hole of the mound-buildings shooting out streams of octopi. Hundreds were in sight already. The whole city was evidently alarmed. Wells at once formed his men in a circle, so their beams would guard them on every side and above. Apparently the octopi could not approach within thirty feet of them, and even at that distance they turned and fled, writhing with pain, whenever a shaft of light struck full in their eyes.

"The square's just ahead!" the commander roared. "One last rush, now, and we'll reach the submarine! Stick close; keep your arms locked; and watch out above!"

The circle of men narrowed. The rays gave their tiny cl.u.s.ter the appearance of a monster even more fantastic than those moiling around them--a monster with long straight tentacles of glaring white. They stumbled forward through the magically parting ranks of black octopi.

The beams kept the creatures back; they were helpless before them.

Foot by foot under the inverted bowl of threshing tentacles the _NX-1's_ crew lumbered ahead. The street at last ceased; the wide square opened before them.

"We're here!" Wells yelled exultantly. "This is the--"

His voice fell into abrupt silence. He stared around the square, and his heart went cold indeed. They had reached the right place, but it was empty.

The _NX-1_ was not there!

CHAPTER VIII

_Cook, the Navigator_

Through all these hours, one man had remained on the _NX-1_, and that man was, to put it mildly, scared to death.

Cook Angus McKegnie had been nearest the connecting ladder when Keith Wells roared out the command to retreat above, and his desire to regain a place of safety was so earnest that he made the control room in record time. At once he had felt the tingle of the paralyzing ray.

Struck by a horrible thought, he ventured to peer down the ladder--and groaned to see the figures of his comrades, all lying limply on the deck. His portly frame quivered like jelly as realization came to him that he was the only one who had escaped the ray.

Heroic ideas of saving the submarine, of rescuing the men below, flashed wildly through his head. But only for a moment. On second thought, he felt he ought to hide. So, in the tomblike silence that had fallen, the two-hundred-and-twenty-pound McKegnie wormed a way behind an instrument panel, effecting the journey by vigorous shoves of his stomach. It was minutes later that he first noticed that some sharp jutting object was jutting deep into his ample paunch, but he could do nothing to remedy it. He was hidden, anyway, and he was going to stay hidden!

The cook felt the _NX-1_ being towed forward. Then, after a dreadful wait, he heard queer noises down below, and was positive the exit ports had opened. The snakelike slithering and shuffling which followed would mean that the enemy was inside the _NX-1._ The thought brought St. Vitus' dance to his limbs, and, try as he might, he couldn't still them. Then again the ports opened, the gloomy silence returned, and Angus McKegnie was alone with his reflections.

After the first hour he gave voice to them in one simple, bitter sentence. "Just why the h.e.l.l," he muttered, "did I ever join the Navy?" The silence offered no reply, and McKegnie, desperate from his cramped position, ventured to poke his head around the instrument panel. The faint emergency lights showed the control room to be empty.

He decided to come out, and did so, worming his way back with great difficulty.

Once out, the first thing his eyes fell on was the teleview screen.

Now the cook had never seen one of the octopi, and the screen showed hundreds of monsters cl.u.s.tering around the _NX-1._ So with unusual promptness he acted, jamming himself once again into his hiding place.

Maybe, he thought, they had some way in which they could see into the control room and discover him!

Hours pa.s.sed. The cook was sopping with sweat. Finally his thoughts emerged into words.

"I got to get out of here!" he said intensely. "I _got_ to! And I got to run this submarine!"

The sound of his voice somehow emboldened him. Once more he backed out of his cranny, and with cautious, trembling steps explored the control room. He kept his eyes from the teleview, though it had a terrible fascination for him, and surveyed the _NX-1's_ array of control instruments. The prospective navigator groaned at the sight.

There were dozens of mysterious wheels, jutting from every possible angle, squads of black and red-handled levers, whole armies of queer little stud-b.u.t.tons and dials. His knowledge of cooking helped him not at all in the presence of that maze of devices. Timidly he touched one of the levers, but immediately s.n.a.t.c.hed his hand away as if afraid it would bite. His boldly announced purpose of running the craft went glimmering.

An accidental glimpse of the monsters in the teleview suddenly decided him that he needed a weapon. He hunted frantically through the lockers and found three service revolvers, which he fastened at his waist, adding his own carving knife to the a.r.s.enal. But he didn't feel much better. Then, remembering for the first time his sea-suit radio, he yelled: "Mr. Wells! Mr. Wells! Oh, Mr. Wells, where are you? Can you hear me?" There was, of course, no answer.

He tried to bring his muddled thoughts and fears to order. "I got to run this thing," he said doggedly. "_Got_ to! Now, let's see: what the h.e.l.l's this thing for?... What the--"

He broke off short, and his eyes went wide. He had heard a noise!

Yes--there it was again! The same peculiar sc.r.a.ping at one of the exit ports! He glanced fearfully at the teleview. "Oh, Lord!" he yelped.

"They're comin' in to get me!"

He started to dive back behind the instrument panel, but stopped, drew two guns, and in an agonized muddle trotted back and forth for a moment, waving them. Another look at the screen showed that an exit port was open, admitting two metal-scaled octopi. McKegnie couldn't stand it any longer: he wedged himself behind his panel again. Soon sounds of the metal tentacles on the deck below told him that one of the creatures was coming up the ramp--then slithering into the control room itself. The cook was a lather of cold perspiration.

For a few minutes there was silence. The octopus was apparently surveying this new part of the submarine. Then, without warning, the tip of a metal-scaled tentacle felt around the panel and crept, exploring, up Angus McKegnie's leg--which leg was again suddenly afflicted with St. Vitus' dance. The tentacles coiled, pulled hard--and the cook with a yowl was yanked out into the room.

Dangling upside down, high in the air, he submitted to the fishy stare of the great eyes under the sheathing of gla.s.s. But soon he started to squirm, and his violent contortions brought a rush of blood to his head, making him quite dizzy. It was while he was in that state that things started to happen.

First, a great roar rolled through the _NX-1_, and McKegnie found himself flat on the floor with his breath knocked out. Then, while this was registering on his mind, he discovered himself the center of a madly milling set of tentacles, and instinctively scrambled out of the way. From a distance he saw that the tentacles belonged to the octopus that had held him, and that their coilings and threshings were gradually dying down, until only a quiver ran through them from time to time. While McKegnie was trying to figure this all out he noticed that the monster's gla.s.s sheeting was shattered, that it lay in a pool of water, and that the odor of burnt powder was in the air. Looking down he found that he had a gun in his hand. A thin wisp of smoke was curling from the barrel.

"Gee whiz!" he e.j.a.c.u.l.a.t.ed. "Gee _whiz_!"

As he stood there recovering from his surprise, he heard the other octopus crawling up the connecting ramp, coming to see what had befallen its fellow. Preceded by two trembling guns, McKegnie tiptoed to the ramp and peered down.

From the darkness he saw another complicated ma.s.s of metal tentacles and gla.s.s advancing up towards him. Fear smote the cook, and almost without volition be pointed his guns and pulled the triggers. As before, a bullet crashed into the great dome of gla.s.s, and he watched a short but terrible death struggle. He had, by himself, slain two octopi!

A tremendous elation filled McKegnie--until it occurred to him that his shots might have been heard outside. At once he ran and looked at the teleview view screen, and what he saw on its silver surface took all the triumph abruptly out of him. The octopi outside were darting about with alarming activity; a whole cl.u.s.ter of them was centered at the exit port, and, even as the cook stared, the preliminary sounds of opening it came to his ears.

"Now I _got_ to run this ship!" he groaned.

He peered at the ma.s.s of levers and wheels, put out a hand, closed his eyes, hesitated, and pulled one of them back. Nothing happened.

He tried another. The noise below grew, but still the _NX-1_ remained motionless. Desperate, the cook jerked several other levers. The whine of electric motors surged through the silence; the submarine shuddered and slewed off to the right, as if trying to dig into the sea-floor.

"I got it started!" he cried. He did something else. The _NX-1_ stuck her bow dizzily up and sped into the misty-blue realm above in a grand, sweeping circle. The sea-floor with its mound-buildings and swarming octopi fell away behind with a rush.

"There!" muttered the triumphant cook. "But--how did I do it?"

The submarine was rising like a sky-rocket. McKegnie remembered suddenly that Wells had said the cavern was only a few miles high; he must now be very near the top. He held his breath while he pushed a likely looking lever the other way.

He was lucky. The _NX-1_ capered like a two-year-old, kicked up her stern and bolted eagerly for the depths once more. Again the floor of the cavern rushed up at him, again he pulled the potent lever back, and again the submarine meteored upward.

This procedure went on for some time. McKegnie was only running an elevator. Was he doomed to dash up and down between floor and ceiling forever? He gave forth pints of sweat, now and then groaning as the submarine grazed horribly close to top or bottom. The dead octopus at his feet slithered limply around on the crazy-angling deck.

"I can't keep this up forever!" the cook said peevishly. "Now, what the h.e.l.l's this thing for?"

He turned it, and the _NX-1_ tilted in one of her dives and raced forward, midway between ceiling and floor. Her navigator relaxed slightly. He had found the major controls; at least he had been able to stop his dizzy game of plunging up and down. Then, just as he was beginning to wonder where he could go, a large red spot glowed at the edge of the location chart.

"Oh, Lord!" he cried. "That's the other submarine--an' it's comin'