"You haven't told us all the story yet," said Phil Heredith quietly.
The other looked doubtfully at the ring of intent faces regarding him. "I left that part untold for a good reason," he admitted. "It is—well, I thought it a little bit too horrible to relate."
"Oh, do tell us," said the lady journalist enthusiastically. "We are all dying to hear it. It is such an unusual and exciting story that it would be cruel to leave us in suspense about the end."
"Very well, then," said Musard, as the other ladies chorused their approval. "We left the cave, and Moynglass, who considered himself the leader of the expedition, put the ruby in his pocket. That night we camped at a wild desolate spot, not far from the edge of a cliff about two hundred feet high, at the foot of which the bitter sulphurous waters of the river flowed into a chasm. In the morning we found Moynglass lying dead in his blanket, with the rusty sheath knife he had brought away from the cave sticking in his breast. The ruby was gone, and, so, also, was the eldest member of our party—an elderly dark-faced Irishman named Doyne, who, the previous day, had angrily disputed Moynglass's right to carry the ruby.
"We searched for Doyne all that day, but could find no trace of him. The next day we tracked across a glacier-like expanse littered with large blocks of sandstone. It was a grim spot. A horrible, stony, treeless waste which might have been the birthplace of the earth and the scene of Creation—a tableland between great mountains, full of masses of rhodonite contorted into grotesque shapes of stone images; a place where our lightest whispers came shouting back out of the profound stillness from the huge castellated black rocks bristling on the edge of a precipice which slit the valley from end to end.
"It was there we found Doyne, staggering along the lip of the gorge. He had gone mad in the solitude, and was wandering along bareheaded, tossing his arms in the air as he walked. When I saw him I thought of Cain trying to escape from the wrath of God after killing Abel. He saw us as soon as we saw him, and started to run. We set out in pursuit, but he fled with great speed, leaping from rock to rock like a mountain goat. He was getting away from us when he slipped and fell into the chasm with a loud cry. We found a path down the precipice and descended, and discovered him at the foot, battered to death, with the ruby clutched in his hand. That ended the expedition. The others insisted on returning to the coast without delay, and when we arrived there they gladly sold their shares in the ruby to me."
There was rather a long silence when the explorer had finished his narration. The long hand of the clock on the mantelpiece was creeping past the half-hour, but the circle round the dining-room table had been so enthralled by the story that nobody had noted the passage of time.
"What a ghastly adventure, Mr. Musard!" began one of the ladies, with a mirthless little laugh. "Did you never discover anything more about the two dead men in the cave?"
"No," replied Musard. "As I said, there were no papers or any clue to throw light on their identity. The skeletons must have lain there for many years, for the bones were crumbling into decay."
"You have never revisited the spot?" asked Sir Philip.