Rod's confidence was the chief thing that kept up the spirits of the treasure seekers during the next few days, for not the first sign of gold was discovered above the fall. Yard by yard the prospectors worked up the chasm until they had washed its sands for more than a mile. And with the pa.s.sing of each day, as Wabigoon had predicted, the stream became more and more shallow, until they could wade across it without wetting themselves above their knees. At the close of the fourth day the three lowered themselves over the face of the rock into the second chasm. So convinced was Rod in his belief that the gold was hidden deep down under the creek bed that he dug a four-foot hole by torch-light and that night after supper washed out several pans of dirt in the glow of the camp-fire. He still found no signs of gold.

The next day's exertions left no room for doubt. Beyond two or three tiny flecks of gold the three adventurers found nothing of value in the deeper sand and gravel of the stream. That night absolute dejection settled on the camp. Both Rod and Wabigoon made vain efforts to liven up their drooping spirits. Only Mukoki, to whom gold carried but a fleeting and elusive value, was himself, and even his hopefulness was dampened by the gloom of his companions. Rod could see but one explanation of their failure. Somewhere near the cataract John Ball and the Frenchmen had found a rich pocket of gold, and they had worked it out, probably before the fatal tragedy in the old cabin.

"But how about the mad hunter and his golden bullets?" insisted Wabi, in another effort to brighten their prospects. "The bullets weighed an ounce each, and I'll stake my life they came from this chasm. He knows where the gold is, if we don't!"

"Come back soon!" grunted Mukoki. "Watch heem. Fin' gol'!"

"That's what we'll do!" cried the young Indian, jumping suddenly to his feet and toppling Rod backward off the rock upon which he was sitting. "Come, cheer up, Rod! The gold is here, somewhere, and we're going to find it! I'm heartily ashamed of you; you, whom I thought would never get discouraged!"

Rod was laughing when he recovered from the playful mauling which Wabi administered before he could regain his feet.

"That's right, I deserve another licking! We've got all the spring and summer before us, and if we don't find the gold by the time snow flies we'll come back and try it again next year! What do you say?"

"And bring Minnetaki with us!" added Wabi, jumping into the air and kicking his heels together. "How will you like that, Rod?" He nudged his comrade in the ribs, and in another moment both were puffing and laughing in one of their good-natured wrestling bouts, in which the cat-like agility of the young Indian always won for him in the end.

In spite of momentary times like this, when the natural buoyancy and enthusiasm of the young adventurers rose above their discouragement, the week that followed added to their general depression. For miles the chasm was explored and at the end of the week they had found less than an ounce of gold. If their pans had given them no returns at all their disappointment would have been less, for then, as Wabi said, they could have given up the ghost with good grace. But the few precious yellow grains which they found now and then lured them on, as these same grains have lured other hundreds and thousands since the dawn of civilization. Day after day they persisted in their efforts; night after night about their camp-fire they inspired each other with new hope and made new plans. The spring sun grew stronger, the poplar buds burst into tiny leaf and out beyond the walls of the chasm the first promises of summer came in the sweetly scented winds of the south, redolent with the breath of balsam and pine and the thousand growing things of the plains.

But at last the search came to an end. For three days not even a grain of gold had been found. Around the big rock, where they were eating dinner, Rod and his friends came to a final conclusion. The following morning they would break camp, and leaving their canoe behind, for the creek was now too shallow for even birch-bark navigation, they would continue their exploration of the chasm in search of other adventures.

The whole summer was ahead of them, and though they had failed in discovering a treasure where John Ball and the Frenchmen had succeeded, they might find one farther on. At least the trip deeper into the unexplored wilderness would be filled with excitement.

Mukoki rose to his feet, leaving Rod and Wabi still discussing their plans. Suddenly he turned toward them, and a startled cry fell from his lips, while with one long arm he pointed beyond the fall into the upper chasm.

"Listen--heem--heem!"

The old warrior's face twitched with excitement, and for a full half minute he stood motionless, his arm still extended, his black eyes staring steadily at Rod and Wabigoon who sat as silent as the rocks about them. Then there came to them from a great distance a quavering, thrilling sound, a sound that filled them again with the old horror of the upper chasm--the cry of the mad hunter.

At that distant cry Wabigoon sprang to his feet, his eyes leaping fire, his bronzed cheeks whitening in an excitement even greater than that of Mukoki.

"Muky, I told you!" he cried. "I told you!" The young Indian's body quivered, his hands were clenched, and when he turned upon Rod the white youth was startled by the look in his face.

"Rod, John Ball is coming back to his gold!"

Hardly had he spoken the words when the tenseness left his body and his hands dropped to his side.

The words shot from him before he could control himself enough to hold them back. In another moment he was sorry. The thought that John Ball and the mad hunter were the same person he had kept to himself, until for reasons of his own he had let Mukoki into his secret. While the idea had taken larger and larger growth in his mind he knew that from every logical point of view the thing was impossible, and that constraint which came of the Indian blood in him held him from discussing it with Rod. But now the words were out. A quick flush replaced the whiteness that had come into his face. In another instant he was leaning eagerly toward Rod, his eyes kindling into fire again.

He had not expected the change that he now saw come over the white youth.

"I have been thinking that for a long time," he continued. "Ever since we found the footprints in the sand. There's just one proof that we need, just one, and--"

"Listen!"

Rod fairly hissed the word as he held up a warning hand.

This time the cry of the mad hunter came to them more distinctly. He was approaching through the upper chasm!

The white youth rose to his feet, his eyes steadily fixed upon Wabigoon's. His face was deathly pale.

"John Ball!" he repeated, as if he had just heard what the other had said. "John Ball!" What seemed to him to be the only truth swept upon him like a flood, and for a score of seconds, in every one of which he could hear his heart thumping excitedly, he stood like one stunned.

John Ball! John Ball returned to life to find their gold for them, to tell them of the tragedy and mystery of those days long dead and gone!

Like powder touched by a spark of fire his imagination leaped at Wabi's thrilling suggestion.

Mukoki set to work.

"Hide!" he exclaimed. "Hide thees--thees--thees!" He pointed about him at all the things in camp.

Both of the boys understood.

"He must see no signs of our presence from the top of the fall!" cried Wabi, gathering an armful of camp utensils. "Hide them back among the cedars!"

Mukoki hurried to the cedar bough shelter and began tearing it down.

For five minutes the adventurers worked on the run. Once during that time they heard the madman's wailing cry, and hardly had they finished and concealed themselves in the gloom of the old cabin when it came again, this time from not more than a rifle-shot's distance beyond the cataract. It was not a scream that now fell from the mad hunter's lips, but a low wail and in it there was something that drove the old horror from the three wildly beating hearts and filled them with a measureless, nameless pity. What change had come over the madman? The cry was repeated every few seconds now, each time nearer than before, and in it there was a questioning, appealing note that seemed to end in sobbing despair, a something that gripped at Rod's heart and filled him with a great half-mastering impulse to answer it, to run out and stretch his hands forth in greeting to the strange, wild creature coming down the chasm!

Then, as he looked, something ran out upon the edge of the great rock beside the cataract, and he clutched at his own breast to hold back what he thought must burst forth in words. For he knew--as surely as he knew that Wabi was at his side--that he was looking upon John Ball!

For a moment the strange creature crouched where the stub had been, and when he saw that it was gone he stood erect, and a quavering, pitiful cry echoed softly through the chasm. And as he stood there motionless the watchers saw that the mad hunter was an old man, tall and thin, but as straight as a sapling, and that his head and breast were hidden in s.h.a.ggy beard and hair. In his hands he carried a gun--the gun that had fired the golden bullets--and even at that distance those who were peering from the gloom of the cabin saw that it was a long barreled weapon similar to those they had found in the other old cabin, along with the skeletons of the Frenchmen who had died in the fatal knife duel.

In breathless suspense the three waited, not a muscle of their bodies moving. Again the old man leaned over the edge of the rock, and his voice came to them in a moaning, sobbing appeal, and after a little he stretched out his arms, still crying softly, as if beseeching help from some one below. The spectacle gripped at Rod's soul. A hot film came into his eyes and there was an odd little tremble in his throat.

The Indians were looking with dark, staring eyes. To them this was another unusual incident of the wilderness. But to Rod it was the white man's soul crying out to his own. The old man's outstretched arms seemed reaching to him, the sobbing voice, filled with its pathos, its despair, its hopeless loneliness, seemed a supplication for him to come forth, to reach up his own arms, to respond to this lost soul of the solitudes. With a little cry Rod darted between his companions. He threw off his cap and lifted his white face to the startled creature on the rock, and as he advanced step by step, reaching out his hands in friendship, he called softly a name:

"John Ball, John Ball, John Ball!"

In an instant the mad hunter had straightened himself, half turned to flee.

"John Ball! h.e.l.lo, John Ball--John Ball--"

In his earnestness Rod was almost sobbing the name. He forgot everything now, everything but that lonely figure on the rock, and he drew nearer and nearer, gently calling the name, until the mad hunter dropped on his knees and, crumpled in his long beard and gray lynx skin, looked down upon Rod and sent back a low moaning, answering cry.

"John Ball! John Ball, is that you?"

Rod stopped, with the madman forty feet above him, and something seemed choking back the very breath in him when he saw the strange look that had come into the old man's eyes.

"John Ball--"

The wild eyes above shifted for a moment. They caught a glimpse of two heads thrust from the door of the old cabin, and the madman sprang to his feet. For a breath he stood on the edge of the rock, then with a cry he leaped with the fierce agility of an animal far out into the swirl of the cataract! For an instant he was visible in the downward plunge of the water. Another instant and with a heavy splash he disappeared in the deep pool under the fall!

Wabi and Mukoki had seen the desperate leap and the young Indian was beside the pool before Rod had recovered from his horrified astonishment. For centuries the water of the chasm stream had been tumbling into this pool wearing it deeper and deeper each year, until the water in it was over a man's head. In width it was not more than a dozen feet.

"Watch for him! He'll drown if we don't get him out," shouted Wabi.

Rod leaped to the edge of the pool, with Mukoki between him and Wabigoon. Ready to spring into the cold depths at the first sign of the old man's gray head or struggling arms the three stood with every muscle ready for action. A second, two seconds, five seconds pa.s.sed, and there was no sign of him. Rod's heart began to beat with drum-like fierceness. Ten seconds! A quarter of a minute! He looked at Wabigoon.

The young Indian had thrown off his caribou-skin coat; his eyes, as he turned them for a moment toward Rod, flashed back the white youth's fear.

"I'm going to dive for him!"

In another instant he had plunged head foremost into the pool.

Mukoki's coat fell to the ground. He crouched forward until it seemed he must topple from the stone upon which he stood. Another fifteen seconds and Wabigoon's head appeared above the water, and the old warrior gave a shout.

"Me come!"