A long, furry nose was thrust through the opening in the ceiling, and a slender tongue reached down into the chamber, licking up the ants, as more of the ceiling fell in to add further to the confusion which suddenly seized them. They seemed to forget us entirely; and immediately there was a scramble for the opening leading into the tunnel. The ants crawled over one another and jammed the entrance in panic; and constantly the great tongue licked them up, and more of the ceiling fell in.

U-Val and I ran and crouched close against the wall at the far side of the chamber in an effort to escape the falling boulders, while above us the beast tore away with powerful claws as it sought to enlarge the opening.

The long, powerful tongue sought out every corner of the room. Twice it passed over our bodies; but each time it discarded us as it sought for more ants. When there were no more left, the tongue and the head were withdrawn from the great hole that the creature had made in the top of the ant hill.

The chamber was filled with debris that reached to the edge of the great rent in the ceiling. It formed an avenue of escape; and there was not an ant in sight.

"Come," I said to U-Val, "let's get out of here before the ants recover from their confusion."

Together we scrambled up the pile of rubble; and when we stood again in the open there was not an ant in sight; but there was a colossal ant bear, as large as an elephant, digging at another part of the hill. In appearance the creature was almost identical with the South American ant bear of the outer crust but highly specialized as to size, because of the enormous ants upon which it fed.

Perry and I had often speculated upon the amazing similarity between many of the animals of Pellucidar and of the outer crust; and Perry had formulated a theory to explain this which I believe is based on quite sound reasoning.

It has been quite clearly demonstrated that at some time in the past, tropical conditions existed at what are now the Arctic regions; and it is Perry's belief that at this time animals passed freely through the polar opening from the outer crust to the inner world; but be that as it may there was a great ant bear, and to it we owed our lives.

Animated by a common impulse, U-Val and I hastened away from the ant hills and down toward the ocean; and I may say that I never left any place before with a greater sense of relief, not even the village of Meeza, King of the Jukans.

At the edge of the surf, U-Val stopped and gazed out across the ocean, shading his eyes with his hand as he strained them into the distance.

As I followed his gaze I was suddenly struck with a change in the seascape since last I had seen it.

"That is strange," I said.

"What?" demanded U-Val.

"The last time I looked out across this water, there were islands out there. I saw them distinctly. I could not have been mistaken."

"You were not mistaken," said U-Val. "They were The Floating Islands, of which Ruva is one."

"And now you will never see your own country again," I said. "That is too bad."

"Of course I shall see it again," said U-Val, "that is, if I am not killed as I am going to it."

"But even if you had a boat, how would you know in what direction to go?" I asked.

"I will always know where Ruva lies, no matter where it is. I do not know how. I simply know." He pointed. "Beyond the range of our vision it lies directly there."

Now here was a new phase of that amazing homing instinct which is inherent to all Pellucidarians. Here was a man whose country floated around aimlessly, possibly, upon a great ocean, at the mercy of tide and current and wind; yet no matter where it might be U-Val, given means of transportation, could go directly to it, or at least so he thought. I wondered if it were true.

The point on the coast at which U-Val had left his canoe was in the direction that I had intended going; so I went with him to look for it.

"If it is not there," he said. "I shall have to build another; and while I am doing it, Ruva will have drifted much farther. I hope that I shall find my boat."

Find it he did, where he had hidden it among some tall reeds in a tiny inlet.

U-Val said that he had to make a number of spears before attempting the long journey in search of Ruva. He said that he should probably be attacked many times by sea monsters during the trip; and the only weapon that he could use against them with any degree of success was long spear.

"We shall have to have many of them," he said.

"'We'?" I repeated. "I am not going with you."

He looked astonished. "You are not?" he demanded. "But where will you go? You have told me that you don't know how to find your way to your own country. You had much better come with me."

"No," I said. "I know that Sari does not lie out in the middle of an ocean and that if I went there I should never find it; whereas, if I stick to the seashore, I may eventually come to it, if this is, as I think, the ocean near which it lies."

"It is not as I had planned," he said; and I thought that his tone was a little sullen.

"I'll stay with you until you shove off," I told him, "for I have to make more weapons for myself-a short spear, a bow, and some arrows."

He asked me what bow-and-arrows were, as he had never heard of them. He thought that they might be handy and in some ways better than a spear.

Once again I set to work making weapons. It may seem to you that I had very bad luck with my weapons, constantly losing them as I did; but making them entailed very little work as they were most crudely done. However, they had always answered my purpose; and, after all, that is the only thing that matters.

U-Val kept reverting to the subject of my accompanying him. He seemed absolutely set upon it and was continually trying to persuade me to change my mind.

I couldn't understand why he was so insistent for he had never given the slightest indication of harboring any affection for me. Accident had thrown us, two alien people, together; and about the most that one might say about it was that we were not unfriendly.

U-Val was a fine-looking chap; and in the bright sunlight he was a deep black with a copper glint. His features were quite regular; and he was, all in all, quite handsome.