When Professor Ernest Grimcke realized that his desperate flight from the besieged building had been attended with complete success, and that he was standing among the dense shadows of the forest, with no enemy near, he devoutly uncovered his head, and, looking upward, uttered his fervent thanks to heaven for its amazing mercy.

"If ever a man was snatched from the jaws of death," he said, "I am that man."

"And I am another," added Jared Long, who approached in the gloom. "It seems to me like a veritable miracle."

The New Englander explained that, after his furious dash for shelter from the building, he did not believe his chances were any better than those of the man he left behind him. He started, with the intention of making his way by a circuitous course to the river, but had not gone far when he was struck by the baseness of his desertion of his friend. He, therefore, turned about with the resolve to try to do something for him, but had no more than caught sight of the structure again when he descried the Professor coming like a whirlwind for the trees.

Long moved to the point at which he saw he was aiming, and held his Winchester ready to open on any pursuers that might try to follow him. He would have picked off a dozen or so, for he was cool and collected, and fully determined to stand by his friend to the death.

Fortunately, however, for all parties concerned, none of the Murhapas pursued the Professor, though, as has been told, a number under the leadership of Ziffak dashed off in another direction, without endangering the fugitives in the least.

It was a marvellous deliverance, indeed, for our friends, and they understood the part the giant head chieftain had taken in extricating them from the peril. Their hearts glowed with gratitude to the savage, whose friendship for them they could not understand, but who had proven it in such a striking manner.

But it could not be said that they were yet free from danger; and there was much to do before they could breathe freely.

It needed but a brief consultation to agree that after what had taken place, it was the height of madness to attempt to push on to the enchanted lake and burning mountain. King Haffgo was so roused that there was not the slightest chance of escape. The only earthly probability of accomplishing anything in that direction, was by bringing a force strong enough to sweep the warlike Murhapas from their path.

Thankful would the little party of explorers be if they were permitted to get out of the Matto Grosso with their lives.

They waited in the margin of the wood until the return of Ziffak and his baffled company. It was easy to understand the clever trick played by the chieftain upon his followers, and Grimcke and Long were convinced that no further attempt, at least for a time, would be made to capture them.

But being free to attend to their own safety, their thoughts naturally turned to the missing members of the company, especially to Ashman, who unquestionably was involved in the most imminent peril.

It was clear that his two friends could do nothing in his behalf. They did not know where to look for him, and such an attempt was sure to be followed by disastrous consequences to themselves.

It was a singular conclusion to which Grimcke and Long arrived and yet perhaps it was natural. They believed that Ashman had escaped before they did themselves, and that he was probably waiting at some point down the Xingu for them. They decided to pass in the same direction and strive to open communication with him.

How little did they suspect that though he was for the time out of the power of his enemies, yet the Princess Ariel was his companion, and that instead of seeking to flee from the dangerous country, he had actually penetrated farther into it.

After carefully reconnoitering their surroundings, therefore, the Professor and Long approached the Xingu at a point a third of a mile below the Murhapa village. Everything seemed to be quiet and motionless around them, with the exception of the river, yet they were given precious little time for wonderment or speculation.

The first amazing sight on which their eyes rested was their own large canoe drifting down stream. They stood a moment, not knowing what to make of it, but speedily reached the right conclusion: Ziffak had set it free for their special benefit.

It was floating sideways near the middle of the Xingu, and showed there was no one on board.

It was too invaluable to be allowed to get away from them, or to run the risk of a passage through the rapids below. Long decided to swim out to it, but, before he could enter the water, the Professor showed him that some one had anticipated them. A short distance up the bank, a native was in the act of entering the Xingu, while his companion stood on the bank, evidently about to follow him.

The clear moonlight enabled the explorers to identify them as Bippo and Pedros, the former being the one already in the water.

"Let them go," whispered the Professor, "they may as well do it for us."

Pedros was but a few strokes behind his friend, and the two were seen to clamber over the side ............