There was a long and weary wait before anything occurred. The water was cold, and my limbs became stiff and numb; I called to Harry that it was useless to wait longer, and was turning toward the sh.o.r.e when there was a sudden commotion in the water not far from where he stood.

I turned and saw Harry plunge forward with his spear.

"I've got him!" he yelled. "Come on!"

I went. But I soon saw that Harry didn't have him. He had Harry.

They were all of ten yards away from me, and by the time I reached the spot there was nothing to be seen but flying water thrashed into foam and fury.

I caught a glimpse of Harry being jerked through the air; he was holding on for dear life with both hands to the shaft of his spear.

The water was over my head there; I was swimming with all the strength I had.

"I've got him--through the belly," Harry gasped as I fought my way through the spray to his side. "His head! Find his head!"

I finally succeeded in getting my hand on Harry's spear-shaft near where it entered the body of the fish; but the next instant it was jerked from me, dragging me beneath the surface. I came up puffing and made another try, but missed it by several feet.

Harry kept shouting: "His head! Get him in the head!"

For that I was saving my spear. But I could make nothing of either head or tail as the immense fish leaped furiously about in the water, first this way, then that.

Once he came down exactly on top of me and carried me far under; I felt his slippery, smooth body glide over me, and the tail struck me a heavy blow in the face as it pa.s.sed. Blinded and half choked, I fought my way back to the surface and saw that they had got fifty feet away.

I swam to them, breathing hard and nearly exhausted. The water foamed less furiously about them now. As I came near the fish leaped half out of the water and came down flat on his side; I saw his ugly black head pointed directly toward me.

"He's about gone!" Harry gasped.

He was still clinging to the spear.

I set myself firmly against the water and waited. Soon it parted violently not ten feet in front of me, and again the head appeared; he was coming straight for me. I could see the dull beady eyes on either side, and I let him have the spear right between them.

There was little force to the blow, but the fish himself furnished that; he was coming like lightning. I hurled my body aside with a great effort and felt him sweep past me.

I turned to swim after them and heard Harry's great shout: "You got him!"

By the time I reached him the fish had turned over on his back and was floating on the surface, motionless.

We had still to get him ash.o.r.e, and, exhausted as we were, it was no easy task. But there was very little current, and after half an hour of pulling and shoving we got him into shallow water, where we could find the bottom with our feet. Then it was easier. Desiree waded out to us and lent a hand, and in another ten minutes we had him high and dry on the rock.

He was even larger than I had thought. No wonder Harry had called him--or one like him--a whale. It was all of fifteen feet from his snout to the tip of his tail. The skin was dead black on top and mottled irregularly on the belly.

As we sat sharpening the points of our spears on the rock, preparatory to skinning him, Desiree stood regarding the fish with unqualified approval. She turned to us:

"Well, I'd rather eat that than those other nasty things."

"Oh, that isn't what we want him for," said Harry, rubbing his finger against the edge of his spear-point. "He's probably not fit to eat."

"Then why all this trouble?" asked Desiree.

"Dear lady, we expect to ride him home," said Harry, rising to his feet.

Then he explained our purpose, and you may believe that Desiree was the most excited of the lot as we ripped down the body of the fish from tail to snout and began to peel off the tough skin.

"If you succeed you may choose the new hangings for my boudoir," she said, with an attempt at lightness not altogether successful.

"As for me," I declared, "I shall eat fish every day of my life out of pure grat.i.tude."

"You'll do it out of pure necessity," Harry put in, "if you don't get busy."

It took us three hours of whacking and slashing and tearing to pull the fish to pieces, but we worked with a purpose and a will. When we had finished, this is what we had to show: A long strip of bone, four inches thick and twelve feet long, and tough as hickory, from either side of which the smaller bones projected at right angles. They were about an inch in thickness and two inches apart. The lower end of the backbone, near the tail, we had broken off.

We examined it and lifted it and bent it half double.

"Absolutely perfect!" Harry cried in jubilation. "Three more like this and we'll sail down the coast to Callao."

"If we can get 'em," I observed. "But two would do. We could make it a triangle."

Harry looked at me.

"Paul, you're an absolute genius. But would it be big enough to hold us?"

We discussed that question on our way back to camp, whither we carried the backbone of our fish, together with some of the meat. Then, after a hearty meal, we slept. After seven hours of the hardest kind of work we were ready for it.

That was our program for the time that followed--time that stretched into many weary hours, for, once started, we worked feverishly, so impatient had we become by dint of that faint glimmer of hope. We were going to try to build a raft, on which we were going to try to embark on the stream, by which we were going to try to find our way out of the mountain. The prospect made us positively hilarious, so slender is the thread by which hope jerks us about.

The first part of our task was the most strenuous. We waited and waded round many hours before another fish appeared, and then he got away from us. Another attempt was crowned with success after a hard fight.

The second one was even larger than the first.

The next two were too small to be of use in the raft, but we saved them for another purpose. Then, after another long search, lasting many hours, we ran into half a dozen of them at once.

By that time we were fairly expert with our spears, besides having discovered their vulnerable spot--the throat, just forward from the gills. To this day I don't know whether or not they were man-eaters.

Their jaws were roomy and strong as those of any shark; but they never closed on us.

Thus we had four of the large backbones and two smaller ones. Next we wanted a covering, and for that purpose we visited the remains of the reptile which had first led us into the cavern.

Its hide was half an inch thick and tough as the toughest leather.

There was no difficulty in loosening it, for by that time the flesh was so decayed and sunken that it literally fell off. That job was the worst of all.

Time and again, after cutting away with the points of our spears--our only tools--until we could stand it no longer, we staggered off to the stream like drunken men, sick and faint with the sight and smell of the mess.

But that, too, came to an end, and finally we marched off to the camp, which we had removed a half-mile upstream, dragging after us a piece of the hide about thirty feet long and half as wide. It was not as heavy as we had thought, which made it all the better for our purpose.

The remainder of our task, though tedious, was not unpleasant.

We first made the larger bones, which were to serve as the beams of our raft, exactly the same length by filing off the ends of the longer ones with rough bits of granite. I have said it was tedious. Then we filed off each of the smaller bones projecting from the neural arch until they were of equal length.

They extended on either side about ten inches, which, allowing four inches for the width of the larger bone and one inch for the covering, would make our raft slightly over a foot in depth.

To make the cylindrical column rigid, we bound each of the vertebrae to the one in direct juxtaposition on either side firmly with strips of hide, several hundred feet of which we had prepared.

This gave us four beams held straight and true, without any play in either direction, with only a slight flexibility resulting from the cartilages within the center cord.