He swung over and dropped down the rope, hand over hand. The men of that old, old race, centuries before the first Papuan came to these shores, were still in his mind as he descended. He regretted that he could not have lived with them peacefully and studied their natures more thoroughly. The ancient civilization of the hunting tribes was theirs, and with it a mental quality that had kept them inviolate among their hills in spite of a ring of hostile Papuan savages below them, far superior in stature and numbers to all their tribes put together. Like most of the real aborigines of the world, they would well repay study.

When he arrived at the foot of the rope the rest of the party had tramped quite a trail along the foot of the cliff. Stones that now showered over from above told them that it was essential to get to the jungle as quickly as possible, and the shortest way was obviously along the cliff base and over the turn of the volcanic cone poured down here by former eruptions.

But Nicky looked back at the rope, longingly. He hated to leave all that good equipment behind. The rope part they could dispense with, but without the curator’s hammock and their own tent flies the jungle would be a misery during the afternoon thunderstorms.

“Hike along, boys. I’m going to make a try at that rope before they find it and haul it up!”

Unmindful of the curator’s expostulations, amid the rain of falling stones, he crouched close to the cliff face and drew out his revolver. Most of the stones were dropping far out; it would be a mere chance if he were hit. Three times he fired at the knot above the curator’s hammock, a mark perhaps forty feet off. Then an arrow struck the rock at his feet with a sharp tang, and, looking up, he saw one of the pygmies leaning far out over the cliff, aiming at him again. The rope had shaken a little at one of the shots and on this faint hope he sprang for the tent fly and tugged fiercely at it. He thought he felt a strand or two of it break and so jumped up on the tent fly, coming down with all his weight. Another arrow spun past him. He realized that it was only the peculiarity of having a vertical target that saved him, for the archer above was overshooting him because of it. With a last violent tug the rope strand parted, and Nicky sprawled headlong down the lava slope. Like a cat he spread-eagled, flattening himself out on the rubble of small stones, and finally he fetched up a considerable distance down the slope.

He was now a mark for a dozen arrows from above and they buzzed at him like hornets. Rising, he leaped on down, stabbing with his feet and sending an avalanche of rocks on before him. His strides kept getting longer and longer. A breathless feeling of getting out of control, falling down the slope faster and faster, made him think quick. He must stop himself at any hazard, risk a fall, if need be! He resolved on the latter, and, throwing himself sidewise, came down with a bump that jarred every bone in his body. He saw stars for an instant, but held his consciousness. Looking back, he could see that he was far out of range now. Rubbing himself painfully, he got up and started to step gingerly from rock to rock across the slope.

But the hill men weren’t done with him yet. A great stone fell over the cliff and came bounding down straight toward him. Nicky dodged it, as derisive yells came from up above. Two more rocks came whizzing down the slope, bounding like cannon balls. They seemed very terrific, but the boy stood his ground and watched them pass, shooting in a great arc high overhead and landing with a shock against the trees down in the jungle below. He realized that he was not so easy to hit; that all it required was watchfulness and care to win out.

The slope was so steep that he could toss a pebble clear down to the jungle below him, it seemed. Rocks, cactus, and century plants covered the hill, the former so unstable that they had to be tested before putting weight on them. As quickly as he could the boy picked his way along the slope, dodging rocks of all sizes flung down from above. Shouts of encouragement came from his own party under the cliff, who now were moving along fast, calling for him to hurry. Then a yell of warning echoed down from the curator, and Nicky looked up, bewildered. The hill men had brought a pole from the jungle and were prying off a whole ledge of stones hanging loosely poised above the cliff edge.

He leaped along like a mountain goat, stumbling and sliding, starting rocks by the dozen. The pygmies had chosen a place where the avalanche would fall right across his path, and he could hear the distant grumble of it as he jumped. Desperately his eyes looked below for a refuge, and then he dove for a huge bowlder and fell flat behind it as the roar, it seemed, of the whole slope coming down upon him sounded in his ears. Determined to die game, he rose behind his rock as the noise swept down toward him, for he was more afraid that his own rock would start and crush him than anything else, and had determined to leap out at the first sign of its going.

Then came the roar of hurtling stones passing over him in a flying cloud of dust. The thunder of it was appalling. His own rock moved with the jar, slightly, and then settled back on its foundations again as Nicky recalled the impulse to jump clear. Then came a wave of fine pebbles and dust, curling around the ends of his rock and forming a sort of pit around him. Showers of small stones cascaded over the top and fell down on him like a rain. It gave him an idea. As the landslide subsided he crouched, hidden behind the rock. Anxious calls came from under the cliff, but Nicky lay hid. Why not pretend that the avalanche had buried him? He only hoped that the curator or Dwight would not attempt to come out and rescue him.