'The men are up--all's clear,' he said, flashing a look at the stranger, whose face was pallid and ghastly in the moonlight. 'Guess he 's about done,' he thought, and wondered whether his strength would hold out. 'You go first, Trentham; I 'll cover the rear.'

Trentham entered the narrow fissure, set a foot in the lowest notch, and, levering his back against the opposite wall, began to climb. The stranger, who had spoken no word, followed with nervous haste, so quickly that at the second step his head touched Trentham's boot.

'Steady! Steady!' Hoole called up in a loud whisper. 'One slip, and you 're done!'

The man paid no heed. He seemed to feel that he was on the verge of exhaustion, and must attain that giddy height while there was yet time. Hoole watched him anxiously; it would hardly be safe to follow until the man had reached the top, yet the savages were returning. He heard their yells of rage, and presently caught sight of them running up the beach in a scattered line. A few moments later a ferocious shriek proclaimed that one of them at least had espied the men climbing.

'I must chance it,' thought Hoole. 'He 's a heavy chap--if he falls.'

With the speed acquired in mountaineering, he was soon on the heels of the rescued prisoner, whose quick pants alarmed him. About sixty feet from the base the man gave a long gasp and stopped. Hoole stuck his feet firmly, bent his head, and presented an arched back. At that moment he heard a sharp whizzing sound. The man grunted, and began to climb again. Hoole followed. Something flew with a hiss past his ear, and clicked against the wall.

'Arrows!' he thought. 'I wonder what their range is.'

Up and up, foot by foot, arrows whizzing and clicking, the savages yelling with ever-increasing fury, and audible through it all the laboured breathing of the man above. Then the shooting suddenly ceased; one tremendous yell, then silence. Hoole guessed that the savages had begun to climb. But he was now a hundred feet above them; if the stranger's strength held out, they would never recover the start. Their bare feet made no sound as they clambered up; the fissure was too narrow for him to see them. Once more the stranger stopped for breath, and when Hoole stopped also, a shout of triumph, immensely loud in the narrow passage, announced that the savages were gaining. The sound seemed to give their victim new strength; he clambered more quickly than before. Presently Hoole heard Trentham's voice quietly giving encouragement. Then, looking up, he saw the man hauled over the edge, and five seconds later his shoulders were grasped by Grinson's brawny hands, and he lay among thick grass.

UP AND UP, FOOT BY FOOT, ARROWS WHIZZING AND CLICKING.