Lady Greystoke suffered far greater anguish than any other of the castaways, for the blow to her hopes and her already cruelly lacerated mother-heart lay not in her own privations but in the knowledge that she might now never be able to learn the fate of her first-born or do aught to discover his whereabouts, or ameliorate his condition—a condition which imagination naturally pictured in the most frightful forms. For two weeks the party divided the time amongst the various duties which had been allotted to each. A daylight watch was maintained from sunrise to sunset upon a bluff near the camp—a jutting shoulder of rock which overlooked the sea. Here, ready for instant lighting, was gathered a huge pile of dry branches, while from a lofty pole which they had set in the ground there floated an improvised distress signal fashioned from a red undershirt which belonged to the mate of the Kincaid. But never a speck upon the horizon that might be sail or smoke rewarded the tired eyes that in their endless, hopeless vigil strained daily out across the vast expanse of ocean. It was Tarzan who suggested, finally, that they attempt to construct a vessel that would bear them back to the mainland. He alone could show them how to fashion rude tools, and when the idea had taken root in the minds of the men they were eager to commence their labours. But as time went on and the Herculean nature of their task became more and more apparent they fell to grumbling, and to quarrelling among themselves, so that to the other dangers were now added dissension and suspicion. More than before did Tarzan now fear to leave Jane among the half brutes of the Kincaid’s crew; but hunting he must do, for none other could so surely go forth and return with meat as he. Sometimes Mugambi spelled him at the hunting; but the black’s spear and arrows were never so sure of results as the rope and knife of the ape-man. Finally the men shirked their work, going off into the jungle by twos to explore and to hunt. All this time the camp had had no sight of Sheeta, or Akut and the other great apes, though Tarzan had sometimes met them in the jungle as he hunted. And as matters tended from bad to worse in the camp of the castaways upon the east coast of Jungle Island, another camp came into being upon the north coast. Here, in a little cove, lay a small schooner, the Cowrie, whose decks had but a few days since run red with the blood of her officers and the loyal members of her crew, for the Cowrie had fallen upon bad days when it had shipped such men as Gust and Momulla the Maori and that arch-fiend Kai Shang of Fachan. There were others, too, ten of them all told, the scum of the South Sea ports; but Gust and Momulla and Kai Shang were the brains and cunning of the company. It was they who had instigated the mutiny that they might seize and divide the catch of pearls which constituted the wealth of the Cowrie’s cargo.