This apathy appeared incomprehensible to Mont.

Without any difficulty the vessel could have gone out to sea, risen in mid-ocean, and taken in fresh air.

"It is very odd we don't move," he remarked.

"I can't understand it," said the professor. "But everything is so remarkable on board this ship that I have ceased to wonder at anything."

"I've had a taste of n.i.g.g.e.rs, and don't want another," said Stump, who was lying on a mattress with his leg bound up.

"Hark at the reptiles! What a thundering row they're kicking up!"

remarked Mont.

"I never heard such a racket," answered Carl; "our skipper must be out of his head not to start the vipers."

The captain appeared in the doorway.

There was a pleasant smile on his face, and he did not seem at all alarmed at the menacing aspect of affairs.

"Gentlemen," he said, "we resume our voyage at twelve o'clock exactly."

"It is now a quarter to," said the professor, regarding his chronometer.

"Precisely. I shall open the flap, and take in air directly."

"And the n.i.g.g.e.rs?" said Mont.

"The Papouans?" replied the captain, shrugging his shoulders.

"Won't they get in?"

"How?"

"Easily enough, by walking down the ladder. They can do that when the flap is up, and can kill us all without any trouble."

"Gentlemen," said Captain Vindex, "the Papouans will not descend the staircase, although the flap is open."

They regarded this singular man in amazement.

"You do not understand me," he continued. "Come to the bottom of the ladder, and you shall see."

"Shall we take our guns?" asked the professor.

"Not the slightest necessity."

"At least your slaves are armed?"

"They are all at their work; follow me," said the captain.

They obeyed his order, and walked to the foot of the metal ladder.

The captain folded his arms, and stood by the side of the professor.

Mont and Carl were together.

Even Stump had crawled along the pa.s.sage to see what would happen.

Captain Vindex made a sign to a slave, who, touching a spring, caused a trapdoor in the back of the _Searcher_ to fly open.

The sunshine descended in a flood.

Terrible cries of rage and triumph were heard, and a swarm of natives appeared on all sides.

At least twenty made a rush at the ladder, brandishing their tomahawks and spears, while they uttered fierce yells and sc.r.a.ps of war songs.

The first who grasped the railing, and placed his foot on the ladder, gave a bound back, and the most fearful shrieks burst from his quivering lips. A second, a third, and a fourth did the same.

What invisible force was at work Mont did not know. He thought the days of magic and sorcery had returned.

A score of Papouans tried to descend; but they had no sooner made the attempt than they instantly retreated, yelling dismally, and threw themselves into the sea.

"Stunning," said Mont. "It's fine, but I don't know how you do it."

The captain smiled.

To get a better view, Mont put one foot on the staircase and one hand on the railing.

He immediately withdrew them, uttering a cry which was loud enough to wake the dead.

"Oh, oh!" he cried.

"What's up?" exclaimed Carl, who could not help laughing.

"I see the dodge now," said Mont; "it's an electric battery applied to the metal of the staircase, and whoever touches it has a shock. I've had it before at Coney Island, and at fairs. You pay a dime and get electrified."

"Ah!" e.j.a.c.u.l.a.t.ed the professor, upon whom a light began to dawn.

"You are right," said the captain calmly. "I have connected the bra.s.s staircase with the powerful storage battery that gives us light and power, and the ignorant savages are frightened at they know not what. If they had persisted in their attempt to enter the ship I should have applied all my electrical force, and they would have fallen as dead as flies on a fly paper; but I did not wish to harm them. They are enemies unworthy of my hatred."

The news of the dreadful and mysterious pains which they felt were spread by the shocked natives to their friends.

Alarmed and horrified, they beat a precipitate retreat, swimming and rowing back to the sh.o.r.e.

In half an hour the beach was deserted, and all flew away from the sea fiend whose nature they could not understand.

"They take us for the Old Nick," said Mont.

"Twelve o'clock," exclaimed the captain, who was always as punctual as fate; "I said we should sail at twelve."

At this moment the engines began to revolve, and the _Searcher_ skimmed over the surface of the sea like a bird.