It is very simple, Bickley.

Standing here, I heard you say that although the sun was well down there was no one to meet you as Humphrey had expected, and from those words and your voice I guessed the rest." "Your knowledge of the English language is improving fast, Lady Yva.
Also, when I spoke, you were not here." "At least I was very near, Bickley, and these walls are thinner than you think," she answered, contemplating what seemed to be solid rock with eyes that were full of innocence.

"Oh! friend," she went on suddenly, "I wonder what there is which will cause you to believe that you do not know all; that there exist many things beyond the reach of your learning and imagination?
Well, in a day or two, perhaps, even you will admit as much, and confess it to me--elsewhere," and she sighed.
"I am ready to confess now that much happens which I do not understand at present, because I have not the key to the trick," he replied.
Yva shook her head at him and smiled again.

Then she motioned to all of us to stand close to her, and, stooping, lifted Tommy in her arms.

Next moment that marvel happened which I have described already, and we were whirling downwards through space, to find ourselves in a very little time standing safe in the caves of Nyo, breathless with the swiftness of our descent.