For a long time John Carter sat in silence staring at the floor. I knew that his thoughts were forty-three million miles away, and I was loath to interrupt them.

At last he spoke. "Human nature is alike everywhere," he said. He flicked the edge of the magazine lying on my bunk. "We think that we want to forget the tragedies of life, but we do not. If they momentarily pass us by and leave us in peace, we must conjure them again, either in our thoughts or through some such medium as you have adopted. As you find a grim pleasure in reading about them, so I find a grim pleasure in thinking about them.

"But my memories of that great tragedy are not all sad. There was high adventure, there was noble fighting; and in the end there was-but perhaps you would like to hear about it."

I told him that I would, so he told me the story that I have set down here in his own words, as nearly as I can recall them.

CHAPTER I. RAPAS THE ULSIO

Over nineteen hundred miles east of the Twin Cities of Helium, at about Lat. 30 degrees S., Lon. 172 degrees E., lies Zodanga. It has ever been a hotbed of sedition since the day that I led the fierce green hordes of Thark against it and, reducing it, added it to the Empire of Helium.

Within its frowning walls lives many a Zodangan who feels no loyalty for Helium; and here, too, have gathered numbers of the malcontents of the great empire ruled over by Tardos Mors, Jeddak of Helium. To Zodanga have migrated not a few of the personal and political enemies of the house of Tardos Mors and of his son-in-law, John Carter, Prince of Helium.

I visited the city as seldom as possible, as I had little love either for it or its people; but my duties called me there occasionally, principally because it was the headquarters of one of the most powerful guilds of assassins on Mars.