As the British had defeated them unaided, the Ariel had taken no part in the affair, and, after vanishing from the sight of the astonished combatants, had proceeded upon her voyage of discovery.

As a good month would have to elapse before she could keep her rendezvous with the steamer that was to bring out the materials for the construction of the new air-ships from England, there was plenty of time to make the voyage in a leisurely and comfortable fashion. As soon, therefore, as he was out of sight of the skirmishers, he had reduced the speed of the Ariel to about forty miles an hour, using only the stern-propeller driven by one engine, and supporting the ship on the air-planes and two fan-wheels.

At this speed he would traverse the three thousand odd miles which lay between the Hindu Kush and "Aeria"—as Louis Holt had somewhat fancifully named the region that could be reached only through the air—in a little over seventy-five hours, or rather more than three days.

Those three days were the happiest that his life had so far contained. The complete success of his invention, and the absolute fulfilment of his promises to the Brotherhood, had made him a power in the world, and a power which, as he honestly believed, would be used for the highest good of mankind when the time came to finally confront and confound the warring forces of rival despotisms.

But far more than this in his eyes was the fact that he had been able to use the unique power which his invention had placed in his hands, to rescue the woman that he loved so dearly from a fate which, even now that it was past, he could not bring himself to contemplate.

When she had first greeted him in the Council-chamber of the Inner Circle, the distance that had separated her from him had seemed immeasurable, and she—the daughter of Natas and the idol of the most powerful society in the world—might well have looked down upon him—the nameless dreamer of an unrealised dream, and a pauper, who would not have known where to have looked for his next meal, had the Brotherhood not had faith in him and his invention.

But now all that was changed. The dream had become the reality, and the creation of his genius was bearing her with him swiftly and smoothly through a calm atmosphere, and under a cloudless sky, over sea and land, with more ease than a bird wings its flight through space. He had accomplished the greatest triumph in the history of human discovery. He had revolutionised the world, and ere long he would make war impossible. Surely this entitled him to approach even her on terms of equality, and to win her for his own if he could.

Natasha saw this too as clearly as he did—more clearly, perhaps; for, while he only arrived at the conclusion by a process of reasoning, she reached it intuitively at a single step. She knew that he loved her, that he had loved her from the moment that their hands had first met in greeting, and, peerless as she was among women, she was still a woman, and the homage of such a man as this was sweet to her, albeit it was still unspoken.

She knew, too, that the hopes of the Revolution, which, before all things human, claimed her whole-souled devotion, now depended mainly upon him, and the use that he might make of the power that lay in his hands, and this of itself was no light bond between them, though not necessarily having anything to do with affection.

So far she was heart-whole, and though many had attempted the task, no man had yet made her pulses beat a stroke faster for his sake. Ever since she had been old enough to know what tyranny meant, she had been trained to hate it, and prepared to work against it, and, if necessary, to sacrifice herself body and soul to destroy it.