"Now you may fetch water," said Haidia, smiling at her lover. "No, you do not need the sh.e.l.ls," she added. "The beetles are finish. It is as the wise men of my people told me."

Wondering, hesitating, Tommy and Dodd unlocked the front door. They stood upon the threshold ready to bolt back again. But there was no stirring among the beetle hosts.

Growing bolder, they advanced a few steps; then, shamed by Haidia's courage, they followed her, still cautiously to the station.

Dodd shouted as he saw a water-tank, and a receptacle above it with a water-c.o.c.k. They let Haidia drink, then followed suit, and for a few moments, as they appeased their thirst, the beetles were forgotten.

Then they turned back. There had been no movement in that line of sh.e.l.ls that glinted in the morning sunlight.

"Come, I shall show you," said Haidia confidently, advancing toward the trench.

Dodd would have stopped her, but the girl moved forward quickly, eluded him with a graceful, mirthful gesture, and stooped down over the trench.

She rose up, raising in her arms an empty beetle-sh.e.l.l!

Dodd, who had reached the trench before Tommy, turned round and yelled to him excitedly. Tommy ran forward--and then he understood.

The sh.e.l.ls were empty. The swarm, whose life cycle Bram had admitted he did not understand, had just moulted!

It had moulted because the bodies, gorged with food, had grown too large for the sh.e.l.ls. In time, if left alone, the monsters would grow larger sh.e.l.ls, become invincible again. But just now they were defenseless as new-born babes--and knew it.

Deep underneath the empty sh.e.l.ls they had burrowed into the ground.

Everywhere at the bottom of the deep trenches were the naked, b.e.s.t.i.a.l creatures, waving helpless tentacles and squirming over one another as they strove to find shelter and security.

A sudden madness came over Tommy and Dodd. "Dynamite--there must be dynamite!" Dodd shouted, as he ran back to the station.

"Something better than dynamite," shouted Tommy, holding up one of a score of drums of petrol!

CHAPTER XI

_The World Set Free_

They waited two days at Settler's Station. To push along the line into the desert would have been useless, and both men were convinced that an airplane would arrive for them. But it was not until the second afternoon that the aviator arrived, half-dead with thirst and fatigue, and almost incoherent.

His was the last plane on the Australian continent. He brought the news of the destruction of Adelaide, and of the siege of Melbourne and Sydney, as he termed it. He told Dodd and Tommy that the two cities had been surrounded with trenches and barbed wire. Machine guns and artillery were bombarding the trenches in which the beetles had taken shelter.

"Has any one been out on reconnaissance?" asked Tommy.

n.o.body had been permitted to pa.s.s through the barbed wire, though there had been volunteers. It meant certain death. But, unless the beetles were sapping deep in the ground, what their purpose was, n.o.body knew.

Tommy and Dodd led him to the piles of smoking, stinking debris and told him.

That was where the aviator fainted from sheer relief.

"The Commonwealth wants you to take supreme command against the beetles," he told Tommy, when he had recovered. "I'm to bring you back.

Not that they expect me back. But--G.o.d, what a piece of news! Forgive my swearing--I used to be a parson. Still am, for the matter of that."

"How are you going to bring us three back in your plane?" asked Tommy.

"I shall stay here with Jimmydodd," said Haidia suavely. "There is not the least danger any more. You must destroy the beetles before their sh.e.l.ls have grown again, that's all."

"Used to be a parson, you say? Still are?" shouted Dodd excitedly.

"Thank G.o.d! I mean, I'm glad to hear it. Come inside, and come quick. I want you too, Tommy!"

Then Tommy understood. And it seemed as if Haidia understood, by some instinct that belongs exclusively to women, for her cheeks were flushed as she turned and smiled into Dodd's eyes.

Ten minutes later Tommy hopped into the biplane, leaving the happy married couple at Settler's Station. His eyes grew misty as the plane took the air, and he saw them waving to him from the ground. Dodd and Haidia and he had been through so many adventures, and had reached safety. He must not fail.

He did not fail. He found himself at Sydney in command of thirty thousand men, all enthusiastic for the fight for the human race, soldiers and volunteers ready to fight until they dropped. When the news of the situation was made public, an immense wave of hope ran through the world.

National differences were forgotten, color and creed and race grew more tolerant of one another. A new day had dawned--the day of humanity's true liberation.

Tommy's first act was to call out the fire companies and have the beetles' trenches saturated with petrol from the fire hoses. Then incendiary bullets, shot from guns from a safe distance, quickly converted them into blazing infernos.

But even so only a t.i.the of the beetle army had been destroyed. Two hundred planes had already been rushed from New Zealand, and their aviators went up and scoured the country far and wide. Everywhere they found trenches, and, where the soil was stony, millions of the beetles cl.u.s.tered helplessly beneath great mounds of discarded sh.e.l.ls.

An army of black trackers had been brought in planes from all parts of the country, and they searched out the beetle ma.s.ses everywhere along the course that the invaders had taken. Then incendiary bombs were dropped from above.

Day after day the beetle ma.s.sacre went on. By the end of a week the survivors of the invasion began to take heart again. It was certain that the greater portion of the horde had been destroyed.

There was only one thing lacking. No trace of Bram had been seen since his appearance at the head of his beetle army in front of Broken Hill.

And louder and more insistent grew the world clamor that he should be found, and put to death in some way more horrible than any yet devised.

The ingenuity of a million minds worked upon this problem. Newspapers all over the world offered prizes for the most suitable form of death.

Ingenious Oriental tortures were rediscovered.

The only thing lacking was Bram.

A spy craze ran through Australia. Five hundred Brams were found, and all of them were in imminent danger of death before they were able to prove an alias.

And, oddly enough, it was Tommy and Dodd who found Bram. For Dodd had been brought back east, together with his bride, and given an important command in the Army of Extermination.

Dodd had joined Tommy not far from Broken Hill, where a swarm of a hundred thousand beetles had been found in a little known valley. The monsters had begun to grow new sh.e.l.ls, and the news had excited a fresh wave of apprehension. The airplanes had concentrated for an attack upon them, and Tommy and Dodd were riding together, Tommy at the controls, and Dodd observing.

Dodd called through the tube to Tommy, and indicated a ma.s.s that was moving through the scrub--some fifty thousand beetles, executing short hops and evidently regaining some vitality. Tommy nodded.

He signalled, and the fleet of planes circled around and began to drop their incendiary bombs. Within a few minutes the beetles were ringed with a wall of fire. Presently the whole terrain was a blazing furnace.

Hours later, when the fires had died away, Tommy and Dodd went down to look at the destruction that had been wrought. The scene was horrible.

Great ma.s.ses of charred flesh and sh.e.l.l were piled up everywhere.