"The way! Xodar; point the way and leave me.

I shall reach my Princess yet."

"Follow me, John Carter," replied Xodar, and without waiting for my reply he dashed down into the tunnel at our feet. At his heels I ran down through a half-dozen tiers of galleries, until at last he led me along a level floor at the end of which I discerned a lighted chamber.

Massive bars blocked our further progress, but beyond I saw her--my incomparable Princess, and with her were Thuvia and Phaidor. When she saw me she rushed toward the bars that separated us. Already the chamber had turned upon its slow way so far that but a portion of the opening in the temple wall was opposite the barred end of the corridor.

Slowly the interval was closing. In a short time there would be but a tiny crack, and then even that would be closed, and for a long Barsoomian year the chamber would slowly revolve until once more for a brief day the aperture in its wall would pass the corridor's end.

But in the meantime what horrible things would go on within that chamber!

"Xodar!" I cried. "Can no power stop this awful revolving thing?

Is there none who holds the secret of these terrible bars?"