It was impossible for me to escape from the Great Eyrie, before being dragged into a new voyage. After that, how could I possibly get away while the "Terror" sped through the air or the ocean? My only chance must be when she crossed the land, and did so at some moderate speed. Surely a distant and feeble hope to cling to!

It will be recalled that after our arrival at the Great Eyrie, I had attempted to obtain some response from Robur, as to his purpose with me; but I had failed. On this last day I made another attempt.

In the afternoon I walked up and down before the large grotto where my captors were at work. Robur, standing at the entrance, followed me steadily with his eyes. Did he mean to address me?

I went up to him. "Captain," said I, "I have already asked you a question, which you have not answered. I ask it again: What do you intend to do with me?"

We stood face to face scarce two steps apart. With arms folded, he glared at me, and I was terrified by his glance. Terrified, that is the word! The glance was not that of a sane man. Indeed, it seemed to reflect nothing whatever of humanity within.

I repeated my question in a more challenging tone. For an instant I thought that Robur would break his silence and burst forth.

"What do you intend to do with me? Will you set me free?"

Evidently my captor's mind was obsessed by some other thought, from which I had only distracted him for a moment. He made again that gesture which I had already observed; he raised one defiant arm toward the zenith. It seemed to me as if some irresistible force drew him toward those upper zones of the sky, that he belonged no more to the earth, that he was destined to live in space; a perpetual dweller in the clouds.

Without answering me, without seeming to have understood me, Robur reentered the grotto.

How long this sojourn or rather relaxation of the "Terror" in the Great Eyrie was to last, I did not know. I saw, however, on the afternoon of this third of August that the repairs and the embarkation of stores were completed. The hold and lockers of our craft must have been completely crowded with the provisions taken from the grottoes of the Eyrie.

Then the chief of the two assistants, a man whom I now recognized as that John Turner who had been mate of the "Albatross," began another labor. With the help of his companion, he dragged to the center of the hollow all that remained of their materials, empty cases, fragments of carpentry, peculiar pieces of wood which clearly must have belonged to the "Albatross," which had been sacrificed to this new and mightier engine of locomotion. Beneath this mass there lay a great quantity of dried grasses. The thought came to me that Robur was preparing to leave this retreat forever!

In fact, he could not be ignorant that the attention of the public was now keenly fixed upon the Great Eyrie; and that some further attempt was likely to be made to penetrate it. Must he not fear that some day or other the effort would be successful, and that men would end by invading his hiding-place? Did he not wish that they should find there no single evidence of his occupation?

The sun disappeared behind the crests of the Blueridge. His rays now lighted only the very summit of Black Dome towering in the northwest. Probably the "Terror" awaited only the night in order to begin her flight. The world did not yet know that the automobile and boat could also transform itself into a flying machine. Until now, it had never been seen in the air. And would not this fourth transformation be carefully concealed, until the day when the Master of the World chose to put into execution his insensate menaces?

Toward nine o'clock profound obscurity enwrapped the hollow. Not a star looked down on us. Heavy clouds driven by a keen eastern wind covered the entire sky. The passage of the "Terror" would be invisible, not only in our immediate neighborhood, but probably across all the American territory and even the adjoining seas.

At this moment Turner, approaching the huge stack in the middle of the eyrie, set fire to the grass beneath.