"At least, it is a better tomb," I retorted. "And it was a good fight.

We still have something in us. Desiree, a good man was lost in you."

Harry rose to his feet.

"I'm going to look round," he announced. "We've got to do something.

Gad, and it took us a month to build that raft!"

"The vanity of human endeavor," said I, loosening the strap round my shoulders and dropping my bundle to the ground. "Wait a minute; I'm going with you. Are you coming, Desiree?"

But she was too tired to rise to her feet, and we left her behind, arranging what few skins we had as well as possible to protect her from the hard rock.

"Rest your weary bones," said Harry, stooping to kiss her. "There's meat here if you want it. We'll be back soon."

So we left her, with her white body stretched out at its full length on the rude mat.

Bearing off to the left, we soon discovered that we would have no difficulty to leave the cavern; we had only to choose our way. There was scarcely any wall at all, so broken was it by lanes and pa.s.sages leading in all directions.

We followed some of them for a distance, but found none that gave any particular promise. Most of them were choked with rocks and boulders through which it was difficult to force a pa.s.sage. We spent an hour or more in these futile explorations, then followed the wall some distance to the right.

Gradually the exits became less numerous. High on a boulder near the entrance of one we saw the head of some animal peering down at us. We hurled our spears at it, but missed; then were forced to climb up the steep side of the boulder to recover our weapons.

"We'd better go back to Desiree," said Harry when we reached the ground again. "She'll wonder what's become of us. We've been gone nearly two hours."

After fifteen minutes' search we found the stream, and followed it to the left. We had gone farther than we thought, and we were looking for the end, where we had left Desiree, long before we reached it. Several times we called her name, but there was no answer.

"She's probably asleep," said Harry. And a minute later: "There's the wall at last! But where is she?"

My foot struck something on the ground, and I stooped over to examine it.

It was the pile of skins on which Desiree had lain!

I called to Harry, and at the same instant heard his shout of consternation as he came running toward me, holding something in his hand.

"They've got her! Look! Look at this! I found it on the ground over there."

He held the thing in his hand out before me.

It was an Inca spear.

Chapter XXI.

THE MIDST OF THE ENEMY.

Harry and I stood gazing at each other blankly in the semidarkness of the cavern.

"But it isn't possible," I objected finally to my own thoughts. "She would have cried out and we would have heard her. The spear may have been there before."

Then I raised my voice, calling her name many times at the top of my lungs. There was no answer.

"They've got her," said Harry, "and that's all there is to it. The cursed brutes crept up on her in the dark--much chance she had of crying out when they got their hands on her. I know it. Why did we leave her?"

"Where did you find the spear?" I asked.

Harry pointed toward the wall, away from the stream.

"On the ground?"

"Yes."

"Is there an exit from the cavern on that side?"

"I don't know."

"Well, that's our only chance. Come on!"

We found the exit, and another, and a third. Which to take? They were very similar to one another, except that the one in the middle sloped upward at a gentle incline, while the others were level.

"One is as good as another," I observed, and entered the one on the left.

Once started, we advanced with a rush. The pa.s.sage was straight and narrow, clear of obstruction, and we kept at a steady run.

"They may have an hour's start of us," came Harry's voice at my side.

"Or five minutes," I returned. "We have no way of knowing. But I'm afraid we're on the wrong trail."

Still as I had said, one chance was as good as another, and we did not slacken our pace. The pa.s.sage went straight forward, without a bend.

The roof was low, just allowing us to pa.s.s without stooping, and the walls were rough and rugged.

It was not long before we found that we had taken the wrong chance, having covered, I think, some two or three miles when a wall loomed up directly in our path.

"At last, a turn!" panted Harry.

But it was not a turn. It was the end of the pa.s.sage. We had been following a blind alley.

Harry let out a string of oaths, and I seconded him. Twenty minutes wasted, and another twenty to return!

There was nothing else for it. We shouldered our spears and started to retrace our steps.

"No use running now," I declared. "We can't keep it up forever, and we may as well save our strength. We'll never catch up with 'em, but we may find 'em."

Harry, striding ahead two or three paces in front, did not answer.

Finally we reached the cavern from which we had started.

"And now what?" asked Harry in a tone of the most utter dejection.