For just one second Grôm thought his hour had come. He crouched to steady himself, then darted forward and hurled his club straight at his foe’s protruding and shaggy paunch. Again the beast caught the missile in its lightning clutch; but in the next instant it threw up its long arms, without a sound, and fell backwards out of the tree. A-ya, who had been the first to reach the ground, had drawn her bow and shot upwards with sure aim. The shaft had caught the great ape under the center of the jaw, far back at the throat, and pierced straight up to the brain.

Surprised at seeing their leader fall with so little apparent reason, the other apes halted for a moment in their onset, chattering noisily. In that moment Grôm swung himself to the ground. As he reached it both Mô and Loob discharged their arrows. Another ape fell from his perch, but caught himself on a lower branch and hung there writhing; while a third, with a shaft half buried in his paunch, fled back 229 yelling into the tree-top. Then the adventurers snatched up their fallen weapons from the ground and made for the open as fast as they could run. And the apes, with a hellish uproar of barks and screams, came swarming after them through the lower branches.

At this point, fortunately for the travelers, the jungle was already thinning, and they had a chance to show their speed. The raging blue-faces were speedily distanced, and the fugitives ran out breathless upon the sunny savannah. Here, feeling themselves safe, they halted to look back. The lower branches all along the edge of the grass were thronged with leaping brown forms, and gnashing blue masks, and red-rimmed, devilish eyes. But not one of the great beasts, for all their rage, seemed willing to venture forth into the open.

“There must be something out here that they fear greatly,” commented Grôm, peering warily about him. But there was nothing in sight to suggest any danger, and he led the way onward through the rank grass at a long, leisurely trot.

II

For the most part the grass grew hardly waist high; but here and there were patches, perhaps an acre or so in extent, where it was more cane than grass and rose to a height of twelve or fifteen feet. To such patches, which might serve as lurking-places to unknown monsters, Grôm gave a wide berth. He 230 had a vivid remembrance of that colossal head, with the awful dead eyes, which had reared itself through the leafage to stare up at him.

In spite of the strange and enormous trails which crossed their path at times; in spite of occasional massive swayings and crashings in the deep beds of cane, the adventurous party accomplished the journey across the savannah without encountering a single foe. The mid-noon blaze of the sun upon the windless grass, which was almost more than they could endure, was probably keeping the monsters to their lairs; and the only living things to be seen, besides the insects and a high-wheeling vulture or two, were a few shy troops of a kind of small antelope, incredibly swift of foot.

Grôm drew a breath of relief as they reached the foot of the hills. But just here it was impossible to climb them. A range of high limestone downs, they were fringed at this point by an unbroken line of cliff, perpendicular and at times overhanging, from forty or fifty to perhaps a couple of hundred feet in height, and so smooth that even these goat-footed cave-folk could not scale them. The rich plain-land at their feet had once been a shallow, inland sea, and now its grasses washed along their base in a gold-green, scented foam.

Turning to the right, Grôm led the way close along the cliff-foot toward the water, which glowed like brass about a mile ahead. Along the right of their path the ground sloped off gently to a belt of that high cane-like growth which Grôm regarded with such 231 suspicion. Before they had gone many hundred yards his suspicion was more than justified.

From a little way behind them there arose all at once a chorus of explosive gruntings, mixed with a huge crashing of the canes. Glancing over their shoulders, they saw a great rust-red animal, about the size of a rhinoceros, which burst forth from the canes and stood staring after them. Its hideous head was larger than that of any rhinoceros they had ever seen, and armed with a pair of enormous conical horns, each more than a foot in diameter at the base and tapering to a keen point. Set side by side, at a moderate angle, upon the bridge of the snout, they were far more terrible than the horns of any rhinoceros. Their bearer lowered them menacingly, and charged down upon Grôm’s party with a sound that was something between the grunting of a hog and the braying of an ass. Immediately upon his massive heels a whole herd of the red monsters surged forth from the canes, and came charging after their leader at a ponderous gallop which seemed literally to shake the earth.