Thoar, upon his part, found in the American a companion after his own heart—a dependable man of quiet ways, always ready to assume his share of the burden and responsibilities of the savage trail they trod.

So the two came at last to the rim of the great gorge and though they followed it up and down for a great distance in each direction they found no trace of Jana, nor any sign that she had passed that way.

"We shall go down to the lowlands," said Thoar, "to the country that is called Pheli and even though we may not find her, we shall avenge her."

The idea of primitive justice suggested by Thoar's decision aroused no opposing question of ethics in the mind of the civilized American; in fact, it seemed quite the most natural thing in the world that he and Thoar should constitute themselves a court of justice as well as the instrument of its punishment, for thus easily does man slough off the thin veneer of civilization, which alone differentiates him from his primitive ancestors.

Thus a gap of perhaps a hundred thousand years which yawned between Thoar of Zoram, and Jason Gridley of Tarzana was closed. Imbued with the same hatred, they descended the slopes of the Mountains of the Thipdars toward the land of Pheli, and the heart of each was hot with the lust to kill. No greedy munitions manufacturer was needed here to start a war.

Down through stately forests and across rolling foothills went Thoar and Jason toward the land of Pheli. The country teemed with game of all descriptions and their way was beset by fierce carnivores, by stupid, irritable herbivores of ponderous weight and short tempers or by gigantic reptiles beneath whose charging feet the earth trembled. It was by the exercise of the superior intelligence of man combined with a considerable share of luck that they passed unscathed to the swamp land where Pheli lies. Here the world seemed dedicated to the reptilia. They swarmed in countless thousands and in all sizes and infinite varieties. Aquatic and amphibious, carnivorous and herbivorous, they hissed and screamed and fought and devoured one another constantly, so that Jason wondered in what intervals they found the time to propagate their kind and he marvelled that the herbivores among them could exist at all. A terrific orgy of extermination seemed to constitute the entire existence of a large proportion of the species and yet the tremendous size of many of them, including several varieties of the herbivores, furnished ample evidence that considerable numbers of them lived to a great age, for unlike mammals, reptiles never cease to grow while they are living.

The swamp, in which Thoar believed the villages of the Phelians were to be found, supported a tremendous forest of gigantic trees and so interlaced were their branches that oftentimes the two men found it expedient to travel among them rather than upon the treacherous, boggy ground. Here, too, the reptiles were smaller, though scarcely less numerous. Among these, however, there were exceptions, and those which caused them the greatest anxiety were snakes of such titanic proportions that when he first encountered one Jason could not believe the testimony of his own eyes. They came upon the creature suddenly as it was in the act of swallowing a trachodon that was almost as large as an elephant. The huge herbivorous dinosaur was still alive and battling bravely to extricate itself from the jaws of the serpent, but not even its giant strength nor its terrific armament of teeth, which included a reserve supply of over four hundred in the lower jaw alone, availed it in its unequal struggle with the colossal creature that was slowly swallowing it alive.

Perhaps it was their diminutive size as much as their brains or luck that saved the two men from the jaws of these horrid creatures. Or, again, it may have been the dense stupidity of the reptiles themselves, which made it comparatively easy for the men to elude them.

Here in this dismal swamp of horrors not even the giant tarags or the equally ferocious lions and leopards of Pellucidar dared venture, and how man existed there it was beyond the power of Jason to conceive. In fact he doubted that the Phelians or any other race of men made their homes here. "Men could not exist in such a place," he said to Thoar. "Pheli must lie elsewhere."

"No," said his companion, "members of my tribe have come down here more than once in the memory of man to avenge the stealing of a woman and the stories that they have brought back have familiarized us all with the conditions existing in the land of Pheli. This is indeed it."