And at that instant the crew of the _Rosa_ were also relieved of the necessity for making a decision.

At the bottom of one of those long, sickening falls there was a jerk--and we continued on down to the ocean floor!

The sphere rolled over, jumbling the equipment in a tangled mess with the three of us in the center, bruised and cut. The light snapped off as the battery connections were torn loose.

There we lay at the bottom of Penguin Deep, in an inert sphere that was dead and dark in the surrounding blackness--a coffin of gla.s.s to hold us through the centuries....

"Martin," I heard the Professor's voice after a time. "Stanley--can either of you move? I'm caught."

"I'm caught, too," came Stanley's gasping answer. "Something on my leg--feels like it's broken."

A heavy object was pressing across my body. With an effort I freed myself and fumbled in the pitch darkness for the other two.

"Lights first," commanded the Professor. "The pump, you know."

I did know! Frantically I scrambled in the dark till I located the batteries. They were right side up and still wired together.

The air grew rapidly foul with no one at the pump. Panting for breath I blundered at the task of connecting the light. After what seemed an eternity I accomplished it.

The light revealed Stanley with an air tank lying across his leg. The mouthpiece of his breathing tube had been forced back over his head, gashing his face in its journey. His face was white with pain.

The Professor was caught under the heavy bench. I freed him and together we attended to Stanley, finding that his leg wasn't broken but only badly bruised.

The mound-shaped monster, dislodged possibly by the fall, was nowhere to be seen.

I resumed work at the pump, the connections of which were so strongly contrived that they had withstood the shock of the upset.

For a moment we were content to rest while the air grew purer. Then we were forced squarely to face our fate.

The Professor summed up the facts in a few concise words.

"We're certainly doomed! Here at the bottom of Penguin Deep we're as out of reach of help as though we were stranded on the moon. We're as good as dead right now."

"If we have nothing left to hope for," whispered Stanley after a time, "we might as well close the air valves and get it over with at once. No use torturing ourselves...."

The Professor moistened his lips.

"It might be wise." He turned to me. "What's your opinion, Martin?"

But I--I confess I had not the stark courage of these two.

"No! No!" I cried out. "Let's keep on living as long as the air holds out. Something might happen--"

I avoided their eyes as I said it, utterly ashamed of my cowardly quibbling with death. What in the name of G.o.d could possibly happen to help us?

The Professor shrugged dully, and nodded.

"I feel with Stanley that we ought to get it over in one short stab. But we have no right to force you...." His voice trailed off.

We readjusted our mouthpieces. I turned automatically at the pump; and we silently awaited the last suffocating moment of our final doom.

As before, attracted by the light, a strange a.s.sortment of deep-sea life wriggled and darted about us, swimming lazily among the looped coils and twists of our cable which had settled down around us.

Among these were certain fish that resembled great porcupines. Spines a foot and a half long, like living knife blades, protected them from the attacks of other species.

They were the only things we saw that were not constantly writhing away from the jaws of some hostile monster--the only things that seemed able to swim about their own affairs without even deigning to watch for danger.

Fascinated, I watched the six-foot creatures. Here were we, reasoning humans, supposed lords of creation, slowly but surely perishing--while only a few feet away one of the lowest forms of life could exist in perfect safety and tranquility!

Then, as I watched them, I seemed to see a difference in some of them.

The majority of them had two fins just behind the gill slits, typical fish tails and blunt, sloping heads. But now and then I saw a spined monster that was queerly unlike its fellows.

Instead of two front fins, these unique ones had two vacant round holes.

The head looked as though it had forgotten to grow; its place was taken by an eyeless, projecting, shield shaped cap. And there was no tail.

Glad to find something to distract my half crazed thoughts, I studied the nearest of these.

They moved slower than their tailed and finned brothers, I noticed. I wondered how they could move at all, lacking in any kind of motive power as they seemed to be.

Next instant the secret of their movement was made clear!

Out of the empty fin holes of the creature I was studying crept two long, powerful looking tentacles. But these were not true tentacles.

There were no vacuum discs on them, and they moved as though supported by jointed bones--like arms.

The arms ended in flat paddles that resembled hands. These threshed the water in a sort of breast-stroke, propelling the body forward.

Shortly after the arms had appeared, the spiny head cap was cautiously extended a few inches forward from the main sh.e.l.l. Further it was extended as the head of a turtle might slowly appear from the protection of its bony case. And under it--

"Professor!" I screamed wildly. "My G.o.d! Look!"

Both the Professor and Stanley merely stared dully at me. I babbled of what I had seen.

"A man! A human looking thing, anyway! Arms and a head! A man inside a fish's spined hide--like armor!"

They looked pityingly at me. The Professor laid his hand on my shoulder.

"Now, now," he soothed, "don't go to pieces--"

"I tell you I saw it!" I shouted. Then, shrinking from the hysterical loudness of my own voice, I lowered my tone. "Something that looks human has occupied some of those p.r.i.c.kly, six-foot sh.e.l.ls. I saw arms--and a man's head! I swear it!"