“There is nothing more to be done, gentlemen,” said the mate, sadly. “The poor fellow must have gone over somewhere along that rocky edge. I saw several places where it was as slippery as ice, and he has been swept into the depths. Ugh, the whole thing makes me shudder.”

He was right: they all knew nothing more could be done, and they tramped back over the smooth lava stream.

“And I feel to blame for it all,” said Panton, as he walked between his friends. “Who could have foretold that such a terrible calamity would happen to us? It is too horrible to bear.”

At last there was a faint gleam of light upon the water, followed by a flash, and then the lanterns were extinguished, for the blaze of sunshine could be seen playing upon the lake and the Gothic archway of the cavern’s mouth fringed with creepers and ferns, while like some curious silhouette, there for a few moments upon one of the rocks just level with the water, those which had served for stepping-stones, was the figure of a large graceful leopard as it stood gazing into the cavern, but turned and bounded away directly.

The light was hardly bearable for a few minutes, as the party issued out to climb the walls of the ancient crater, and then descend on the other side, but eyes soon grew accustomed to the change, and Smith uttered a deep sigh full of mournfulness.

“I never see nothing look so beautiful before,” he said to Oliver, “but oh, if poor old Billy Wriggs was here to see it. He wouldn’t say to me, ‘Speak the truth, Tommy, speak the truth,’ for them’s the truest words, sir, as I ever said.”

They reached the side of the brig, hot and weary, to find all well, and as they parted on the deck Smith turned to Oliver.

“I’m a-goin’ down to have a good heavy wash, sir, ’fore I has any breakfast, and then I don’t think as I shall eat any, for it’s hard lines to ha’ lost one’s mate.”

“Hard indeed, Smith,” said Oliver, sympathetically. “Poor fellow! but I think we did all we could.”

“Heverythink, sir, I say,” replied the man, who then went slowly below into the forecastle and rushed out again, looking horrified, scared, and yelling loudly.