On both sides of me the prisoners broke to left and right for the seats, vaulting the low wall with dripping swords lusting for the crowded victims who awaited them.

In another moment the entire amphitheatre was filled with the shrieks of the dying and the wounded, mingled with the clash of arms and triumphant shouts of the victors.

Side by side the young red man and I, with perhaps a dozen others, fought our way to the foot of the throne. The remaining guards, reinforced by the high dignitaries and nobles of the First Born, closed in between us and Issus, who sat leaning far forward upon her carved sorapus bench, now screaming high-pitched commands to her following, now hurling blighting curses upon those who sought to desecrate her godhood.

The frightened slaves about her trembled in wide-eyed expectancy, knowing not whether to pray for our victory or our defeat. Several among them, proud daughters no doubt of some of Barsoom's noblest warriors, snatched swords from the hands of the fallen and fell upon the guards of Issus, but they were soon cut down; glorious martyrs to a hopeless cause.

The men with us fought well, but never since Tars Tarkas and I fought out that long, hot afternoon shoulder to shoulder against the hordes of Warhoon in the dead sea bottom before Thark, had I seen two men fight to such good purpose and with such unconquerable ferocity as the young red man and I fought that day before the throne of Issus, Goddess of Death, and of Life Eternal.

Man by man those who stood between us and the carven sorapus wood bench went down before our blades. Others swarmed in to fill the breach, but inch by inch, foot by foot we won nearer and nearer to our goal.

Presently a cry went up from a section of the stands near by-"Rise slaves!" "Rise slaves!" it rose and fell until it swelled to a mighty volume of sound that swept in great billows around the entire amphitheatre.

For an instant, as though by common assent, we ceased our fighting to look for the meaning of this new note nor did it take but a moment to translate its significance. In all parts of the structure the female slaves were falling upon their masters with whatever weapon came first to hand. A dagger snatched from the harness of her mistress was waved aloft by some fair slave, its shimmering blade crimson with the lifeblood of its owner; swords plucked from the bodies of the dead about them; heavy ornaments which could be turned into bludgeons-such were the implements with which these fair women wreaked the long-pent vengeance which at best could but partially recompense them for the unspeakable cruelties and indignities which their black masters had heaped upon them. And those who could find no other weapons used their strong fingers and their gleaming teeth.

It was at once a sight to make one shudder and to cheer; but in a brief second we were engaged once more in our own battle with only the unquenchable battle cry of the women to remind us that they still fought-"Rise slaves!" "Rise slaves!"

Only a single thin rank of men now stood between us and Issus. Her face was blue with terror. Foam flecked her lips. She seemed too paralysed with fear to move. Only the youth and I fought now. The others all had fallen, and I was like to have gone down too from a nasty long-sword cut had not a hand reached out from behind my adversary and clutched his elbow as the blade was falling upon me. The youth sprang to my side and ran his sword through the fellow before he could recover to deliver another blow.

I should have died even then but for that as my sword was tight wedged in the breastbone of a Dator of the First Born. As the fellow went down I snatched his sword from him and over his prostrate body looked into the eyes of the one whose quick hand had saved me from the first cut of his sword-it was Phaidor, daughter of Matai Shang.

"Fly, my Prince!" she cried. "It is useless to fight them longer. All within the arena are dead. All who charged the throne are dead but you and this youth. Only among the seats are there left any of your fighting-men, and they and the slave women are fast being cut down. Listen! You can scarce hear the battle-cry of the women now for nearly all are dead. For each one of you there are ten thousand blacks within the domains of the First Born. Break for the open and the sea of Korus. With your mighty sword arm you may yet win to the Golden Cliffs and the templed gardens of the Holy Therns. There tell your story to Matai Shang, my father. He will keep you, and together you may find a way to rescue me. Fly while there is yet a bare chance for flight."

But that was not my mission, nor could I see much to be preferred in the cruel hospitality of the Holy Therns to that of the First Born.

"Down with Issus!" I shouted, and together the boy and I took up the fight once more. Two blacks went down with our swords in their vitals, and we stood face to face with Issus. As my sword went up to end her horrid career her paralysis left her, and with an ear-piercing shriek she turned to flee. Directly behind her a black gulf suddenly yawned in the flooring of the dais. She sprang for the opening with the youth and I close at her heels. Her scattered guard rallied at her cry and rushed for us. A blow fell upon the head of the youth. He staggered and would have fallen, but I caught him in my left arm and turned to face an infuriated mob of religious fanatics crazed by the affront I had put upon their goddess, just as Issus disappeared into the black depths beneath me.

For an instant I stood there before they fell upon me, but the first rush of them forced me back a step or two. My foot felt for the floor but found only empty space. I had backed into the pit which had received Issus. For a second I toppled there upon the brink. Then I too with the boy still tightly clutched in my arms pitched backward into the black abyss.

We struck a polished chute, the opening above us closed as magically as it had opened, and we shot down, unharmed, into a dimly lighted apartment far below the arena.

As I rose to my feet the first thing I saw was the malignant countenance of Issus glaring at me through the heavy bars of a grated door at one side of the chamber.

"Rash mortal!" she shrilled. "You shall pay the awful penalty for your blasphemy in this secret cell. Here you shall lie alone and in darkness with the carcass of your accomplice festering in its rottenness by your side, until crazed by loneliness and hunger you feed upon the crawling maggots that were once a man."

That was all. In another instant she was gone, and the dim light which had filled the cell faded into Cimmerian blackness.

"Pleasant old lady," said a voice at my side.

"Who speaks?" I asked.

"'Tis I, your companion, who has had the honour this day of fighting shoulder to shoulder with the greatest warrior that ever wore metal upon Barsoom."

"I thank God that you are not dead," I said. "I feared for that nasty cut upon your head."

"It but stunned me," he replied. "A mere scratch."

"Maybe it were as well had it been final," I said. "We seem to be in a pretty fix here with a splendid chance of dying of starvation and thirst."

"Where are we?"

"Beneath the arena," I replied. "We tumbled down the shaft that swallowed Issus as she was almost at our mercy."

He laughed a low laugh of pleasure and relief, and then reaching out through the inky blackness he sought my shoulder and pulled my ear close to his mouth.

"Nothing could be better," he whispered. "There are secrets within the secrets of Issus of which Issus herself does not dream."

"What do you mean?"

"I laboured with the other slaves a year since in the remodelling of these subterranean galleries, and at that time we found below these an ancient system of corridors and chambers that had been sealed up for ages. The blacks in charge of the work explored them, taking several of us along to do whatever work there might be occasion for. I know the entire system perfectly.