He flung back his head and laughed, and the whole crowd laughed too.

All those sycophants roared and chuckled--all except Fredegonde. It was not till afterward that d.i.c.k remembered that.

He stood up. "Dog of an American," he roared, "do you know why you were brought here? It was because I wanted one Yankee to live and see the irresistible powers that I exercise, so that he can go back and report on them to those fools in Washington who still think they can defy me, the messenger of the All-Highest.

"I tell you that the things I have done are nothing in comparison with the things that I have yet to do, if your insane government of pig-headed fools persists in its defiance. It is my plan to send you back to tell them that their President lies bound in gold chains as my footstool. That the hurricane which spread the gas through southern America was a mere summer zephyr in comparison with the storm that I shall send next.

"All the resources of Nature are at my command thanks to the ill.u.s.trious chemists who have been secretly working for the past ten years to serve me. I, the All-Highest, have been commanded by the Almighty to scourge the world for its insolence in rejecting me, and especially the pig-race of Yankees whose pride has grown so great.

Mine is the divinely appointed task to cast down your ridiculous democracies and re-establish the divine world-order of an Emperor and his n.o.bility.

"That is why I have chosen, to permit so mean a thing as you to live.

As for the old fool beside you, who thought to stay my power with his box of tricks--his gas-box is already being a.n.a.lyzed by my chemists, and in a few hours the trivial secret will be at my disposal."

"And that's just where you're wrong," piped old Luke Evans in his cracked voice. "That gas can't be a.n.a.lyzed, because it contains an unknown isotope, and, as for yourself, you're nothing but a daft old fool, with your tin-horn trumpery!"

For a moment the Emperor stood like a statue, staring at old Luke. The expression on his face was that of a madman, but a madman through whose brain a straggling ray of realization has dawned. It was the look upon his face that held the whole a.s.semblage spellbound. Then suddenly came intervention.

Through a doorway in the side of the hall came one of the officers in black. He advanced to the foot of the throne and made a deep, hurried bow, speaking rapidly in some language incomprehensible to d.i.c.k.

The Emperor started, and then a peal of laughter left his lips.

"Pig of a Yankee," he shouted to d.i.c.k, "your contemptible navy's now approaching our sh.o.r.es, with a dirigible scout above it. You shall now see how I deal with such swine!"

CHAPTER X

_The Tricks of the Trade_

He barked a command, and instantly d.i.c.k was seized by two of the guards, one of whom--the one d.i.c.k had knocked down--took the occasion to administer a buffeting in the process of overcoming him. For the sight of the honored President of the United States--that kindly old man straining his eyes to meet d.i.c.k's own--in the parti-colored garb of red and yellow, and chained like a beast below the madman's throne, again filled d.i.c.k with a fury beyond all control.

It was only when he had been half-stunned again by the vicious blows of his captors, delivered with short truncheons of heavy wood, that at length he desisted from his futile struggle.

With swimming eyes he looked upon the gathering about the throne, which, again taking its cue from the madman, way roaring with laughter at his antics. And again d.i.c.k's eyes encountered those of Fredegonde Valmy.

The girl was not smiling. She was looking straight at him, and for a moment it seemed to d.i.c.k as if he read some message in her eyes.

Only for an instant that idea flashed through his mind. He was in no mood to receive messages. As he stood panting like a wild beast at bay, suddenly a filmy substance was thrown over his head from behind.

Then, as his face emerged, and the rest of his body was swiftly enveloped, he realized what was happening.

They had thrown over him one of the invisible garments. He could feel the stuff about him, but he could no longer see his own body or limbs.

From his own ken, d.i.c.k Rennell had vanished utterly. Where his legs and feet should have been, there was only the rug, with the burn from the gla.s.s tube. He raised one arm and could not see arm or fingers.

In another moment invisible cords had been flung around him. d.i.c.k's efforts to renew the struggle were quickly cut short. Trussed helplessly, he could only stand glaring at the madman rocking with laughter upon his tinsel throne. Beside him, similarly bound, stood Luke Evans, but d.i.c.k was only conscious of the old man's presence by reason of the short, rasping, emphatic curses that broke from his lips.

The Emperor turned on his throne and beckoned to Von Kettler, who approached with a deferential bow.

"n.o.bility, we charge you with the care of these two prisoners," he addressed him. "Have the old one removed to the laboratory, and give orders that he shall a.s.sist our chemists to the best of his power in their a.n.a.lysis of the black gas. As for the other, take him up to the central office, and show him how we deal with Yankees and all other pigs. Show him everything, so that he may take back a correct account of our irresistible powers when we dismiss him."

"Come!" barked one of the guards in d.i.c.k's ear.

d.i.c.k attempted no further resistance. Convinced of its futility, sick and reeling from the blows he had received, he accompanied his captors quietly. There was nothing more that he could do, either for President Hargreaves or for old Luke, but he still imagined the possibility of somehow warning the approaching fleet or the occupants of the dirigible.

He was led along the pa.s.sage, past the guards, and up the stairs again. The top door opened upon vacancy; it closed, and vanished. d.i.c.k felt the rugs beneath his feet, but he was to all appearances standing on a square of bare earth in the middle of a prairie.

"Come!" barked the guard again, and d.i.c.k accompanied him, trailing his silver chain. Behind came Von Kettler.

"Here are steps!" said the guard, after they had proceeded a short distance.

d.i.c.k stumbled against the lowest step of an invisible flight. The breeze was cut off, showing that they had entered a building.

Underneath was a large oval of bare ground. d.i.c.k found a handrail and groped his way up around a spiral staircase, four flights of it.

"Here is a room!"

d.i.c.k saw that widening edge of door again. The room inside was perfectly visible, though it seemed to be supported upon air. It was a spheroid, of huge size, with a number of large windows set into the walls, and it was filled with machinery. About a dozen workmen in blue blouses were moving to and fro, attending to what appeared to be a number of enormous dynamos, but there were other apparatus of whose significance d.i.c.k was ignorant. The dynamos were whirring with intense velocity, but not the slightest sound was audible.

Von Kettler stepped to a switch attached to a stanchion of white metal, surmounted by a huge opaque gla.s.s dome, and threw it over.

Instantly the hum and whir of machinery became audible, the sound of footsteps, the voices of the workmen, and the creak of boards beneath their feet.

"You see, we have discovered the means of destroying sound waves as well as shadows, and it was a much simpler feat," said Von Kettler with a sneer. "Tell them that when you get back to Washington, Yankee pig. Also you might be interested to know that most of your bombs fell on camouflaged structures that we had erected with the intention of deceiving you."

He gestured to d.i.c.k to precede him, and halted him at a plain round iron pipe or rod that rose up through the floor and pa.s.sed through the roof. It was surrounded by a mesh of fine wire. Attached to it were various gauges, with dials showing red and black numbers.

"This is perhaps our greatest achievement, swine," remarked Von Kettler, affably. "You shall see its operations from above." He pointed to a narrow spiral staircase rising at the far end of the room. "It is the practical application of Einstein's gravitation and electricity in field relation. It is by means of this, and the three dynamos on the ground that we were able to neutralize your engines last night and bring them down where we wanted them. You must be sure to tell the Washington hogs about that."

He motioned to d.i.c.k to cross the room and ascend the spiral staircase.

Following him, he flung another switch similar to the first one, and instantly all sound within the room was cut off.

They ascended the winding flight and emerged upon a floor or platform.

d.i.c.k felt it under his feet, but he could see nothing except the ground, far beneath him. He seemed to be suspended in the void. He stopped, groping, hesitating to advance. Von Kettler's jarring laugh grated on his ears.

"Don't be afraid, swine," he jeered. "This place is enclosed. There is a shadow-breaking device on every floor, which renders us complete masters of camouflage."

A switch snapped. d.i.c.k found himself instantly in a rotunda, roofed with gla.s.s, sections of which were raised to a height of three or four feet from the wooden base, admitting a gentle breeze. Three or four men were moving about in it, but these wore the black uniform with the silver braid, and Von Kettler's manner was deferential as he addressed them, jerking his hand contemptuously toward d.i.c.k. Grins of derision and malice appeared on all the faces.

Save one, an elderly officer, apparently of high rank, who came forward and raised his hand to the salute.

"Captain Rennell," he said, "we are at war with your nation, but we are also, I hope, gentlemen." He turned to Von Kettler. "Is it seemly," he asked, "that an officer of the American army should be brought here in chains and cords?"

"Excellency, it is His Majesty's command," responded Von Kettler, with a servile smirk that hardly concealed his elation. "Moreover, the American is to witness the forthcoming destruction of the Yankee fleet."