Down he came upon them at once, with the crushing effect of a hundred steam pile-drivers; and for the next few minutes his panicky rage expended itself in treading the two bodies into a shapeless mass. Then he slowly backed off down into the water where the weedy growths were thickest, till once more his whole form was concealed except the insignificant head. This he reared among the swaying tufts of the “mares’ tails,” and waited to see what strange thing would happen next.

He had not long to wait. That hideous, mangled heap there, sweating blood in the noon sun, seemed to have some way of making its presence known. Crashing sounds arose in different parts of the forest, and presently some half-dozen of the leaping, kangaroo-like flesh-eaters appeared.

They were of varying sizes, from ten or twelve feet in length to eighteen or twenty, and they eyed each other with jealous hostility. But one glance at the weltering heap showed them that here was feasting abundant for them all. With a chorus of hoarse cries they came hopping forward and fell upon it.

Presently two vast shadows came overhead, hovering a moment, and a pair of the great bird-lizards dropped upon the middle of the heap. Hooting savagely, with wings half uplifted, they struck about them with their terrible beaks till they had secured room for themselves at the banquet. Other unbidden guests came leaping from among the thickets; and in a short time there was nothing left of the carcasses except two naked skeletons, dragged apart and half dismembered by mighty teeth. In the final mêlée one of the smaller revellers was himself pounced upon and devoured.

Then, as if by consent of a mutual distrust, the throng drew quickly apart, each eyeing his neighbor warily, and scattered into the woods. Only the two grim bird-lizards remained, seeming to have a sort of understanding or partnership, or possibly being a mated pair. They pried into the cartilages and between the joints of the skeletons with the iron wedges of their beaks, till there was not another tit-bit to be enjoyed. Then, hooting once more with satisfaction, they spread their batlike vanes and flapped darkly off again to their red watch-tower on the cliff.

When all was once more quiet the giant visitor fell to pasturing among the crisp and tender water-weeds. It took a long time to fill his cavernous paunch by way of that slender neck of his, and when he was satisfied he went composedly to sleep, his body perfectly concealed under the water, his head resting on a little islet of matted reeds in a thicket of “mares’ tails.” When he woke up again the sun was half-way down to the west, and the beach glowed hotly in the afternoon light. Everything was drenched in heavy stillness. The visitor made up his drowsy mind that he must leave his hiding-place and go and bask in that delicious warmth.

He was just bestirring himself to carry out his purpose, when once more a swaying in the rank foliage of the cycads caught his vigilant eye. Discreetly he drew back into hiding, the place being, as he had found it, so full of violent surprises.

Suddenly there emerged upon the beach a monster even more extraordinary in appearance than himself. It was about thirty-five feet in length, and its ponderous bulk was supported on legs so short and bowed that it crawled with its belly almost dragging the ground. Its small head, which it carried close to the earth, was lizard-like, shallow-skulled, feeble-looking, and its jaws cleft back past the stupid eyes. In fact, it was an inoffensive-looking head for such an imposing body. At the base of the head began a system of defensive armor that looked as if it might be proof against artillery. Up over the shoulders, over the mighty arch of the back, and down over the haunches as far as the middle of the ponderous tail, ran a series of immense flat plates of horn, with pointed tips and sharpened edges. The largest of these plates, those that covered the center of the back, were each three feet in height, and almost of an equal breadth. Where the diminished plates came to an end at the middle of the tail, their place was taken by eight immense, needle-pointed spines, set in pairs, of which the chief pair had a length of over two feet. The monster’s hide was set thick with scales and knobs of horn, brilliantly colored in black, yellow, and green, that his grotesque bulk might be less noticeable to his foes among the sharp shadows and patchy lights of the fern jungles where he fed.

The sluggish giant moved nervously, glancing backwards as he came, and seemed intent upon reaching the water. In a few moments his anxiety was explained. Leaping in splendid bounds along his broad trail came two of those same ferocious flesh-eaters whom the great watcher among the reeds so disliked. They ranged up one on each side of the stegosaur, who had halted at their approach, stiffened himself, and drawn his head so far back into the loose skin of his neck that only the sharp, chopping beak projected from under the first armor-plate. One of the pair threatened him from the front, as if to engross his attention, while the other pounced upon one of his massive, bowed hind-legs, as if seeking to drag it from beneath him and roll him over on his side.

But at this instant there was a clattering of the plated hide, and that armed tail lashed out with lightning swiftness, like a porcupine’s. There was a tearing screech from the rash flesh-eater, and he was plucked back sidewise, all four feet in air, deeply impaled on three of those gigantic spines. While he clawed and writhed, struggling to twist himself free, his companion sprang hardily to the rescue. She hurled herself with all her weight and strength full upon the stegosaur’s now unprotected flank. So tremendous was the impact that, with a frightened grunt, he was rolled clean over on his side. But at the same time his sturdy forearms clutched his assailant, and so crushed, mauled and tore her that she was glad to wrench herself away.

Coughing and gasping, she bounded backwards out of reach; and then she saw that her mate, having wriggled off the spines, was dragging himself up the beach toward the forest, leaving a trail of blood behind him. She followed sullenly, having had more than enough of the venture. The triumphant stegosaur rolled himself heavily back upon his feet, grunted angrily, clattered his armored plates, jerked his terrible tail from side to side as if to see that it was still in working order, and went lumbering off to another portion of the wood, having apparently forgotten his purpose of taking to the water. As he went, one of the grim bird-lizards from the cliff swooped down and hovered, hooting over his path, apparently disappointed at his triumph.

The watcher in the reeds, on the other hand, was encouraged by the result of the combat. He began to feel a certain dangerous contempt for those leaping flesh-eaters, in spite of their swiftness and ferocity. He himself, though but an eater of weeds, had trodden one into nothingness, and now he had seen two together overthrown and put to flight. With growing confidence he came forth from his hiding, stalked up the beach, coiled his interminable tail beside him, and lay down to bask his dripping sides in the full blaze of the sun.

The colossus was at last beginning to feel at home in his new surroundings. In spite of the fact that this bit of open beach, overlooked by the deep green belt of jungle and the rampart of red cliffs, appeared to be a sort of arena for titanic combats, he began to have confidence in his own astounding bulk as a defense against all foes. What matter his slim neck, small head and feeble teeth, when that awful engine of his tail could sweep his enemies off their feet, and he could crush them by falling upon them like a mountain! A pair of the great bird-lizards flapped over him, hooting malignantly and staring down upon him with their immense, cold eyes, but he hardly took the trouble to look up at them.

Warmed and well fed, his eyes half-sheathed in their membraneous lids, he gazed out vacantly across the waving herbage of the shallows, across the slow, pale tides whose surface boiled from time to time above the rush of some unseen giant of a shark or ichthyosaur.

In the heavy heat of the afternoon the young world had become very still. The bird-lizards, all folded in their wings, sat stiff and motionless along the ramparts of red cliff. The only sounds were the hiss of those seething rushes far out on the tide, the sudden droning hum of some great insect darting overhead, or the occasional soft clatter of the long, crisp cycad leaves as a faint puff of hot air lifted them.

At the back of the beach, where the tree-ferns and the calamaries grew rankest, the foliage parted noiselessly at a height of perhaps twenty feet from the ground, and a dreadful head looked forth. Its jaws were both long and massive, and armed with immense, curved teeth like scimitars. Its glaring eyes were overhung by eaves of bony plate, and from the front of its broad snout rose a single horn, long and sharp. For some minutes this hideous apparition eyed the unconscious colossus by the waterside. Then it came forth from the foliage and crept noiselessly down the beach.

Except for its horned snout and armored eyes, this monster was not unlike in general type to those other predatory dinosaurs which had already appeared upon the scene. But it was far larger, approaching thirty-five feet in length, and more powerfully built in proportion to its size; and the armory of its jaws was more appalling. With a stealthy but clumsy-looking waddle, which was nevertheless soundless as a shadow, and his huge tail curled upwards that it might not drag and rattle the stones, he crept down until he was within some fifty feet or more of the drowsing colossus.

Some premonition of peril, at this moment, began to stir in the heavy brain of the colossus, and he lifted his head apprehensively. In the same instant the horned giant gathered himself, and hurled himself forward. In two prodigious leaps he covered the distance that separated him from his intended prey. The coiled tail of the colossus lashed out irresistibly, but the assailant cleared it in his spring, fell upon the victim’s shoulders, and buried his fangs in the base of that columnar neck.

The colossus, for the first time, was overwhelmed with terror. He gave vent to a shrill, bleating bellow–an absurdly inadequate utterance to issue from this mountainous frame–writhed his neck in snaky folds, and lashed out convulsively with the stupendous coils of his tail. But he could not loosen that deep grip, or the clutch of those iron claws.

In spite of the many tons weight throttling his neck, he reared himself aloft, and strove to throw himself over upon his assailant. But the marauder was agile, and eluded the crushing fall without loosing his grip. Then, bleating frightfully, till the sounds re-ëchoed from the red cliffs and set all the drowsing bird-lizards lifting their wings, he plunged down into the tide and bore his dreadful adversary out of sight beneath a smother of ensanguined foam.

Now, the horned giant was himself a powerful swimmer and quite at home in the water, but in this respect he was no match for his quarry. Refusing to relinquish his hold, he was borne out into deep water; and there the colossus, becoming all at once agile and swift, succeeded in rolling over upon him. Forced thus to loose