He crept through the bushes until he had almost encircled the space upon which the savages had built their fire. Then, however, a gap of clear sand, twenty or thirty yards wide, separated him from the bush where the prisoner lay. Was it possible to cross that gap undiscovered? No friendly cloud obscured the moon; if one of the savages chanced to turn, he could not fail to see the moving figure.

Trentham looked around him. There was no cover on that stretch of sand--no bush, no bank of seaweed, no wave-cast log. But the surface was a little uneven; the winds had blown up slight mounds and hollowed shallow troughs. White-clad as he was, the white was stained and toned by water and exposure, he might perhaps crawl through the depressions without attracting attention. But it must be at a snail's pace, inch by inch, flat as a worm.

He lay on all-fours, waited a moment or two, then started on his laborious progress. The mounds seemed higher, the troughs deeper, now that he was on their level, and the yielding sand helped to cover him, though at the same time it made movement difficult. Inch by inch he crawled on, stopping at every yard to listen; he dared not raise his head to look. The savages were still jabbering. Every now and then the dull glow of the fire was brightened by a flicker, at which he lay still as a log, moving on again when the transient flame had died down.

Thus, after exertion more exhausting than if he had run a mile, he came round to the rear of the bush to which the prisoner was bound. The foliage was thin and withered. Raising himself on his knees, he saw that he could easily reach through the branches and cut the man's bonds. Would his sudden action alarm the prisoner--perhaps cause him to cry out? The man, as he could see now, had been placed face downwards, and was tied to the central stem. He was very still. Perhaps rescue was already too late. But no! As Trentham gazed, he discerned a slight movement of the head; it was as though the prisoner sought easier breathing. The moonlight revealed a bald crown and heavily bearded cheeks; it was certainly not Grimshaw, the planter who had been Trentham's fellow-passenger on the Berenisa.

Trentham was still undecided whether to risk a preliminary warning, when the movements of the savages showed that the critical moment had come. The cooking-pot had been removed from the embers and set before the leader, who plunged his hand into it, took out a small joint, and with a hollow, wailing cry flung it into the air in the direction of the moon, the other men chanting a weird chorus. Then they sprang up, gathered about the pot, and began to eat, with horrid sounds of gobbling.

'Now 's the time!' thought Trentham. Stretching forward the hand in which he held his open knife, he cut through the tendrils about the prisoner's arms and feet, and the longer strands which attached him to the bush, whispering a single word of caution. For a few moments the man lay almost as still as before, but Trentham saw that he was stretching his limbs and raising his head to look towards the fire, from which there came now only the faintest gleam. Then slowly, almost imperceptibly, he crawled backward through the bush. Trentham rose to his feet. When the man reached him, he took him by the hand and helped him to rise, then led him with cautious steps, under cover of the bush, down the beach towards the spot where the wreck in its sandy bed stood up slightly from its surroundings.

'NOW 'S THE TIME!'

Edging round this, the two men crouched below the level of the savages' heads, and in silence, one step at a time, moved along parallel with the sea-line, until they arrived at the outlying edge of the bushes which stretched up towards the foot of the chimney. Here they rose erect and quickened their pace. They were half-way to the cliffs when there was a sound of crackling. Looking over his shoulder, Trentham saw one of the savages in the act of throwing more fuel upon the fire, which suddenly broke into a bright flame. Immediately afterwards the air rang with a blood-curdling yell, and the whole troop of savages rushed towards the bush where they had left their prisoner, and swept round it in the direction of the sea.

Trentham hurried on. Panting heavily, the prisoner followed on his heels. At the foot of the chimney Hoole was waiting.