"Back to the ship!" I shouted. "Look, Mr. Correy--there are hundreds of them!"

Before us score upon score of the great disks were lifting, and from the tunnel each revealed, monstrous rust-red bodies were pouring.

Our retreat covered by the two ray operators, we made our way swiftly to the ship. The great spiders, apparently alarmed by the magical disappearance of those of their comrades upon which the disintegrator ray rested, hesitated for a moment, their tremendous legs tensed, and their mandibles quivering with venomous anger, and then scuttled back into their holes, swinging their covers into place as they did so.

"We didn't do so badly, at that," grinned Correy rather breathlessly, as we gained the welcome shelter of the _Ertak_. "There are a score and more of those potlids still standing open--which means that many spiders didn't go back to tell about what happened to them."

"True--but had they waited until they could have surrounded us, the _Ertak_ would have been short-handed on the return trip. She would have been just two officers and six men short."

I have never seen a real expression of fear on Correy's face, but I came as close to it then as I ever did.

"They're tough customers," he said. "I never did like spiders, and I like them less, now. Those things stood half again as high as a man on their long legs, and could jump half the length of the ship."

"Hardly that," I said. "But I'll say this: if they're the gentry Inverness and the other two are investigating, they're welcome to their jobs!"

There wasn't any difficulty in keeping the men close to the ship after that, although waiting was a tedious and nerve-racking procedure.

We watched the spider-infested territory closely, however, and found that they fed at night upon the deer-like creatures Correy had mentioned. These unwary beasts, seeking water, were pounced upon the instant they came close to one of the hidden dens, and dragged swiftly out of sight. These observations were made by television, and Correy in particular would sit up half the night watching the creatures at work.

It was the second day of the fourth week that the sentry on duty called out that the boat was returning. We hastened down to the river to welcome them back, and I for one felt very much relieved.

But as the boat approached, I felt my fears returning, for there was only one man visible: Tipene.

The Zenian, bedraggled and weary, had lost or discarded the protective suit he had worn, and his lean, dark face was haggard.

"We leave immediately, Commander Hanson," he said as he disembarked.

"Please give the necessary orders."

"But the others, sir? Where are Inverness and Brady?"

"Dead," said Tipene. "The Aranians got them. I barely escaped myself."

"And who are the Aranians?" I asked.

"The creatures which control this world. The spider creatures.

Aranians, they call themselves. Do we leave at once, as I ordered?"

I thought quickly. I didn't like Tipene, and never had, and I fancied even less the high-handed att.i.tude he was taking.

"I would suggest, sir, that you first give us an account of what has happened," I said shortly. "If there is anything we can do for the other two, perhaps--"

"I said they were dead," snapped Tipene. "You can't do anything for dead men, can you?"

"No. But we must have a report to enter on our log, you understand, and--I'll be very busy on the return trip. I'd like to have your story before we start." Somehow, I was suspicious of Tipene.

"Very well. Although I warn you I shall report your delay to your superiors." I shrugged, and led the way to the dining saloon which, small as it was, held chairs enough to seat us all.

"My story is very brief," he said, when my three officers, Tipene, and myself were seated. "We proceeded up the river to a spot which we deemed suited as a point of entry into the country, and far enough from the ship so that its presence would not be alarming to the inhabitants.

"We permitted ourselves to be captured by the Aranians, knowing that our protective suits would prevent them from doing us serious bodily injury.

"You have seen the creatures--word of your adventure with them precipitated our misfortune, I might say here--and you know of their tunnels. We were taken down one of these tunnels, and into a still larger one. This in turn gave onto a veritable subterranean avenue, and, in time, led to a sort of underground metropolis."

"What?" growled Correy. "An underground city of those things?"

"I should like to ask that you do not interrupt," said Tipene coldly.

"This metropolis was really no more than a series of cubicles, opening off the innumerable crisscrossing tunnels, and many layers in thickness. Pa.s.sage from one level to another was by means of slanting tunnels.

"Some of these cubicles were very large, and utilized as storage rooms. Others were used for community activities, schools, entertainments, and so forth. We learned these things later, and explored them by means of our _ethon_ lamps--the entire system of tunnels being, of course, in utter darkness.

"The first few days they were exceedingly hostile, and tried to tear us to pieces. When they could not do this, word was sent to some of their more learned members, and we were investigated. By the use of extra menores we had brought with us, we established a contact with their minds; first by the usual process of impressing pictures of our thoughts upon their minds, and later by more direct process."

"I will say nothing of the great scientific value of our discoveries, for you would neither understand nor appreciate them--although they will set the scientific universe agog," continued Tipene, his eyes gleaming suddenly with a triumphant light. "As we perfected communication, we convinced them that we were friendly, and we gained their complete confidence.

"They are a very ancient race. Very slowly have they come to their present stage of mental development, but they now possess reasoning faculties, a language--and a form of community government. There is much more, which, as I have said, would be of no significance to you.

"And then word came that beings like ourselves had attacked and killed many of the Aranians. The news had traveled slowly, for their system of communication is crude, but it reached the community center in which we were staying.

"Instantly, all was hostility. They felt they had been betrayed, and that we might betray them. Brady and Inverness, always rash and thoughtless, had discarded their protective suits, feeling sure they were perfectly safe, and they were torn to pieces.

"I, having a more scientific and cautious mind, doubting everything as a true scientific mind must, still wore my armor. By the liberal use of my pistol, I managed to fight my way to the surface, and to the boat. And now, Commander Hanson, will you start back, as I have ordered?"

I don't know what I would have said if I had not caught a peculiar glance from Correy, a glance accompanied by a significant, momentary closing of one eye (a gesture of Earth which means many things, and which is impossible to explain) and a slight nod.

"Very well, Mr. Tipene," I said shortly. "We'll start at once.

Gentlemen, will you join me in the navigating room?"

Correy was the last to arrive in the navigating room, and when he came in his eyes were dancing.

"I've just transferred Tipene to another stateroom, sir," he said. "A specially equipped stateroom."

"You what?"

"If you'll give orders, sir, for an immediate start, I'll tell you all about it," chuckled Correy. "Tipene says he's worn out, and is going to retire as soon as we start. And when he does--we'll learn something."

I nodded to Kincaide, and he gave the general attention signal. In a few seconds the outer sentry was recalled, and the exit port had been sealed. Slowly, the _Ertak_ lifted.

"Maybe I'm wrong, sir," said Correy then, "but I'm convinced that Tipene is lying. Something's wrong; he was in altogether too much of a hurry to get away.

"So, before I transferred him to the other stateroom, I concealed a menore under the mattress of his bunk, immediately under where his head will lie. It's adjusted to full strength, and I believe it will pick up enough energy to emanate what he's thinking about. We'll be in the next stateroom and see what we can pick up. How does that sound, sir?"