But even they, while considering it necessary to remain quiet for a few days, to see whether or not, any harm should result to them, in consequence of their late attack on the merchant ship, none of them showed a disposition to pa.s.s another night in the cave.

Captain Flint made no objection to his men remaining outside on the following night, as it would give him the opportunity to investigate the matter, which he desired.

On the next night, when there was no one in the cavern but himself and the two who usually occupied it, he called Lightfoot to him, and asked her if she had ever heard any strange noises in the place before.

"Sometime heard de voices of the Indian braves dat gone to the spirit land," said the woman.

"Did you ever hear anything like the groan we heard last night?"

"Neber," said Lightfoot.

"What do you think it was?" asked the captain.

"Tink him de voice ob the great bad spirit," was the reply.

Captain Flint, finding that he was not likely to learn anything in this quarter that would unravel the mystery, now called the negro.

"Bill," he said, "did you ever hear that noise before?"

"Ony once, ma.s.sa."

"When was that, Bill?"

"When you trow my--"

"Hold your tongue, you black scoundrel, or I'll break every bone in your body!" roared his master, cutting off the boy's sentence in the middle.

The boy was going to say:

"When you trow'd my fadder into the sea."

The captain now examined every portion of the cavern, to see if he could discover anything that could account for the production of the strange sound.

In every part he tried his voice, to see if he could produce those remarkable echoes, which had so startled him, on the previous night, but without success.

The walls, in various parts of the cavern, gave back echoes, but nothing like those of the previous night.

There were two recesses in opposite sides of the cave. The larger one of these was occupied by Lightfoot as a sleeping apartment. The other, which was much smaller, Black Bill made use of for the same purpose.

From these two recesses, the captain had everything removed, in order that he might subject them to a careful examination.

But with no better success than before.

He tried his voice here, as in other parts of the cavern, but the walls gave back no unusual echoes.

He was completely baffled, and, placing his lamp on the table, he sat down on one of the seats, to meditate on what course next to pursue.

Lightfoot and Bill soon after, at his request, retired.

He had been seated, he could not tell how long, with his head resting on his hands, when he was aroused by a yell more fearful, if possible, even than the groan that had so alarmed him on the previous night.

The yell was repeated in the same horrible and mysterious manner that the groan had been.

Flint sprang to his feet while the echoes were still ringing in his ears, and rushed to the sleeping apartment, first, to that of the Indian woman, and then, to that of the negro.

They both seemed to be sound asleep, to all appearance, utterly unconscious of the fearful racket that was going on around them.

Captain Flint, more perplexed and bewildered than ever, resumed his seat by the table; but not to sleep again that night, though the fearful yell was not repeated.

The captain prided himself on being perfectly free from all superst.i.tion.

He held in contempt the stories of ghosts of murdered men coming back to torment their murderers.

In fact, he was very much inclined to disbelieve in any hereafter at all, taking it to be only an invention of cunning priests, for the purpose of extorting money out of their silly dupes. But here was something, which, if not explained away, would go far to stagger his disbelief.

He was glad that the last exhibition had only been witnessed by himself, and that the men for the present preferred pa.s.sing their nights outside; for, as he learned from Lightfoot, the noises were only during the night time.

This would enable him to continue his investigation without any interference on the part of the crew, whom he wished to keep in utter ignorance of what he was doing, until he had perfectly unraveled the mystery.

For this purpose, he gave Lightfoot and Black Bill strict charges not to inform the men of what had taken place during the night.

He was determined to pa.s.s the princ.i.p.al portion of the day in sleep, so as to be wide awake when the time should come for him to resume his investigations.

CHAPTER VII.

On the day after the first scene in the cave, late in the afternoon, three men sat on the deck of the schooner, as she lay in the shadow of forest covered mountain.

These were Jones Bradley, Old Ropes, and the man who went by the name of the Parson. They were discussing the occurrences of the previous night.

"I'm very much of the captains opinion," said the Parson, "that the noises are caused by the wind rushing through the c.h.i.n.ks and crevices of the rocks."

"Yes; but, then, there wan't no wind to speak of, and how is the wind to make that horrible groan, s'pose it did blow a hurricane?" said Jones Bradley.

"Just so," said Old Ropes; "that notion about the wind makin' such a noise at that, is all bosh. My opinion is, that it was the voice of a spirit. I know that the captain laughs at all such things, but all his laughin' don't amount to much with one that's seen spirits."

"What! you don't mean to say that you ever actually see a live ghost?"

asked the Parson.

"That's jist what I do mean to say," replied Old Ropes.

"Hadn't you been takin' a leetle too much, or wasn't the liquor too strong?" said the Parson.

"Well, you may make as much fun about it as you please," said Old Ropes; "but I tell you, that was the voice of a spirit, and, what's more, I believe it's either the spirit of some one that's been murdered in that cave, by some gang that's held it before, and buried the body over the treasure they've stowed away there, or else the ghost of some one's that's had foul play from the captain."