through seemingly interminable tunnels, down, ever down beneath the city of Helium.
At length they halted within a fair-sized chamber. There were rings set in the rocky walls. To them chains were fastened, and at the ends of many of the chains were human skeletons. One of these they kicked aside, and, unlocking the huge padlock that had held a chain about what had once been a human ankle, they snapped the iron band about my own leg. Then they left me, taking the light with them.
Utter darkness prevailed. For a few minutes I could hear the clanking of accouterments, but even this grew fainter and fainter, until at last the silence was as complete as the darkness. I was alone with my gruesome companions—with the bones of dead men whose fate was likely but the index of my own.
How long I stood listening in the darkness I do not know, but the silence was unbroken, and at last I sunk to the hard floor of my prison, where, leaning my head against the stony wall, I slept.
It must have been several hours later that I awakened to find a young man standing before me. In one hand he bore a light, in the other a receptacle containing a gruel-like mixture—the common prison fare of Barsoom.
"Zat Arrras sends you greetings," said the young man, "and commands me to inform you that though he is fully advised of the plot to make you Jeddak
