Looking upward, the sky was dark; yet there was light enough to see, and even distinguish broad effects.

I had no difficulty in distinguishing the Tower towards which we were moving, and that, after all, was the main thing.

We drifted slowly, very slowly, as the air was still, and I only used the minimum pressure necessary for the engine.

I think I now understood for the first time the extraordinary value of the engine with which my Kitson was equipped.

It was noiseless, it was practically of no weight, and it allowed the machine to progress as easily as the old-fashioned balloon used to drift before a breeze.
Teuta, who had naturally very fine sight, seemed to see even better than I did, for as we drew nearer to the Tower, and its round, open top began to articulate itself, she commenced to prepare for her part of the task.
She it was who uncoiled the long drag-rope ready for her lowering.