They seemed puny and futile implements of safety against an even ordinary swordsman, but I was later to see the purpose of them and with what wondrous dexterity the yellow men manipulate them.

One of the swords which each of the warriors carried caught my immediate attention. I call it a sword, but really it was a sharp-edged blade with a complete hook at the far end.

The other sword was of about the same length as the hooked instrument, and somewhere between that of my long-sword and my short-sword. It was straight and two-edged. In addition to the weapons I have enumerated each man carried a dagger in his harness.

As the white-furred one approached, the six grasped their swords more firmly-the hooked instrument in the left hand, the straight sword in the right, while above the left wrist the small shield was held rigid upon a metal bracelet.

As the lone warrior came opposite them the six rushed out upon him with fiendish yells that resembled nothing more closely than the savage war cry of the Apaches of the South-west.

Instantly the attacked drew both his swords, and as the six fell upon him I witnessed as pretty fighting as one might care to see.

With their sharp hooks the combatants attempted to take hold of an adversary, but like lightning the cupshaped shield would spring before the darting weapon and into its hollow the hook would plunge.

Once the lone warrior caught an antagonist in the side with his hook, and drawing him close ran his sword through him.

But the odds were too unequal, and, though he who fought alone was by far the best and bravest of them all, I saw that it was but a question of time before the remaining five would find an opening through his marvelous guard and bring him down.

Now my sympathies have ever been with the weaker side of an argument, and though I knew nothing of the cause of the trouble I could not stand idly by and see a brave man butchered by superior numbers.

As a matter of fact I presume I gave little attention to seeking an excuse, for I love a good fight too well to need any other reason for joining in when one is afoot.

So it was that before Thuvan Dihn knew what I was about he saw me standing by the side of the white-clad yellow man, battling like mad with his five adversaries.

Thuvan Dihn was not long in joining me; and, though we found the hooked weapon a strange and savage thing with which to deal, the three of us soon despatched the five black-bearded warriors who opposed us.

When the battle was over our new acquaintance turned to me, and removing the shield from his wrist, held it out. I did not know the significance of his act, but judged that it was but a form of expressing his gratitude to me.

I afterward learned that it symbolized the offering of a man's life in return for some great favor done him; and my act of refusing, which I had immediately done, was what was expected of me.

"Then accept from Talu, Prince of Marentina," said the yellow man, "this token of my gratitude," and reaching beneath one of his wide sleeves he withdrew a bracelet and placed it upon my arm. He then went through the same ceremony with Thuvan Dihn.

Next he asked our names, and from what land we hailed. He seemed quite familiar with the geography of the outerworld, and when I said I was from Helium he raised his brows.

"Ah," he said, "you seek your ruler and his company?"

"Know you of them?" I asked.

"But little more than that they were captured by my uncle, Salensus Oll, Jeddak of Jeddaks, Ruler of Okar, land of the yellow men of Barsoom. As to their fate I know nothing, for I am at war with my uncle, who would crush my power in the principality of Marentina.

"These from whom you have just saved me are warriors he has sent out to find and slay me, for they know that often I come alone to hunt and kill the sacred apt which Salensus Oll so much reveres. It is partly because I hate his religion that Salensus Oll hates me; but mostly does he fear my growing power and the great faction which has arisen throughout Okar that would be glad to see me ruler of Okar and Jeddak of Jeddaks in his place.

"He is a cruel and tyrannous master whom all hate, and were it not for the great fear they have of him I could raise an army overnight that would wipe out the few that might remain loyal to him. My own people are faithful to me, and the little valley of Marentina has paid no tribute to the court of Salensus Oll for a year.

"Nor can he force us, for a dozen men may hold the narrow way to Marentina against a million. But now, as to thine own affairs. How may I aid you? My palace is at your disposal, if you wish to honor me by coming to Marentina."

"When our work is done we shall be glad to accept your invitation," I replied. "But now you can assist us most by directing us to the court of Salensus Oll, and suggesting some means by which we may gain admission to the city and the palace, or whatever other place we find our friends to be confined."

Talu gazed ruefully at our smooth faces and at Thuvan Dihn's red skin and my white one.

"First you must come to Marentina," he said, "for a great change must be wrought in your appearance before you can hope to enter any city in Okar. You must have yellow faces and black beards, and your apparel and trappings must be those least likely to arouse suspicion. In my palace is one who can make you appear as truly yellow men as does Salensus Oll himself."

His counsel seemed wise; and as there was apparently no other way to insure a successful entry to Kadabra, the capital city of Okar, we set out with Talu, Prince of Marentina, for his little, rock-bound country.

The way was over some of the worst traveling I have ever seen, and I do not wonder that in this land where there are neither thoats nor fliers that Marentina is in little fear of invasion; but at last we reached our destination, the first view of which I had from a slight elevation a half-mile from the city.

Nestled in a deep valley lay a city of Martian concrete, whose every street and plaza and open space was roofed with glass. All about lay snow and ice, but there was none upon the rounded, domelike, crystal covering that enveloped the whole city.

Then I saw how these people combated the rigors of the arctic, and lived in luxury and comfort in the midst of a land of perpetual ice. Their cities were veritable hothouses, and when I had come within this one my respect and admiration for the scientific and engineering skill of this buried nation was unbounded.

The moment we entered the city Talu threw off his outer garments of fur, as did we, and I saw that his apparel differed but little from that of the red races of Barsoom. Except for his leathern harness, covered thick with jewels and metal, he was naked, nor could one have comfortably worn apparel in that warm and humid atmosphere.

For three days we remained the guests of Prince Talu, and during that time he showered upon us every attention and courtesy within his power. He showed us all that was of interest in his great city.

The Marentina atmosphere plant will maintain life indefinitely in the cities of the north pole after all life upon the balance of dying Mars is extinct through the failure of the air supply, should the great central plant again cease functioning as it did upon that memorable occasion that gave me the opportunity of restoring life and happiness to the strange world that I had already learned to love so well.

He showed us the heating system that stores the sun's rays in great reservoirs beneath the city, and how little is necessary to maintain the perpetual summer heat of the glorious garden spot within this arctic paradise.

Broad avenues of sod sewn with the seed of the ocher vegetation of the dead sea bottoms carried the noiseless traffic of light and airy ground fliers that are the only form of artificial transportation used north of the gigantic ice-barrier.