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THE AIR BATTLE
319

through my brain again and again, until at last I must have voiced them audibly, for Yersted shook his head.

"In time to save your Princess?" he asked, and then without waiting for my reply, "No, John Carter, Issus will not give up her own. She knows that you are coming, and ere ever a vandal foot is set within the precincts of the Temple of Issus, if such a calamity should befall, Dejah Thoris will be put away forever from the last faint hope of rescue."

"You mean that she will be killed merely to thwart me?" I asked.

"Not that, other than as a last resort," he replied. "Hast ever heard of the Temple of the Sun? It is there that they will put her. It lies far within the inner court of the Temple of Issus, a little temple that raises a thin spire far above the spires and minarets of the great temple that surrounds it. Beneath it, in the ground, there lies the main body of the temple consisting in six hundred eighty-seven circular chambers, one below another. To each chamber a single corridor leads through solid rock from the pits of Issus.

"As the entire Temple of the Sun revolves once with each revolution of Barsoom about the sun but once each year does the entrance to each separate chamber come opposite the mouth of the corridor which forms its only link to the world without.

"Here Issus puts those who displease her, but