With our directional compass set for Duhor and our motor functioning in silent perfection there were no navigational problems to occupy our time. Barring some unforeseen emergency, the ship would fly in an air line to Duhor and stop above the city. Our sensitive altimeter was set to maintain an altitude of 300 ads (approximately 3000 feet), with a safety minimum of 50 ads. In other words, the ship would normally maintain an altitude of 300 ads above sea level, but in passing over mountainous country it was assured a clearance of not less than 50 ads (about 490 feet) by a delicate device that actuates the controls as the ship approaches any elevation of the land surface that is less than 50 ads beneath its keel. I think I may best describe this mechanism by asking you to imagine a self-focusing camera which may be set for any distance, beyond which it is always in focus. When it approaches an object within less distance than that for which it has been adjusted it automatically corrects the focus. It is this change that actuates the controls of the ship, causing it to rise until the fixed focus is again achieved. So sensitive is this instrument that it functions as accurately by starlight as by the brightest sunlight. Only in utter darkness would it fail to operate; but even this single limitation is overcome, on the rare occasions that the Martian sky is entirely overcast by clouds, through the medium of a small beam of light which is directed downward from the keel of the ship.

Secure in our belief in the infallibility of our directional compass, we relaxed our vigilance and dozed throughout the night. I have no excuses to offer, nor did John Carter upbraid me; for, as he was prompt to admit, the fault was as much his as mine. As a matter of fact, he took all the blame, saying that the responsibility was wholly his.

It was not until well after sunrise that we discovered that something was radically wrong in either our position or our timing. The snow clad Artolian Hills which surround Duhor should have been plainly visible dead ahead, but they were not-just a vast expanse of dead sea bottom covered with ochre vegetation, and, in the distance, low hills.

We quickly took our position, only to find that we were some 4500 haads southeast of Duhor; or, more accurately, 150 degrees W. Lon., from Exum, and 15 degrees N. Lat. This placed us about 2600 haads southwest of Phundahl, which is situated at the western extremity of the Great Toonolian Marshes.

John Carter was examining the directional compass. I knew how bitterly disappointed he must be because of the delay. Another might have railed at fate; but he only said, "The needle is slightly bent-just enough to carry us off our course. But perhaps it's just as well-the Phundahlians are far more likely to know where Ras Thavas is than anyone in Duhor. I thought of Duhor first, naturally, because we'd be sure of friendly aid there."

"That's more than we can expect in Phundahl, from what I've heard of them."

He nodded. "Nevertheless, we'll go to Phundahl. Dar Tarus, the jeddak, is friendly to Vad Varo; and so may be friendly to Vad Varo's friend. Just to be on the safe side, though, we'll go into the city as panthans."

"They'll think we're flying high," I said, smiling: "-two panthans in a ship of the princely house of The Warlord of Barsoom!"

A panthan is a wandering soldier of fortune, selling his services and his sword to whomever will pay him; and the pay is usually low, for everyone knows that a panthan would rather fight than eat; so they don't pay him very much; and what they do pay him, he spends with prodigality, so that he is quite broke again in short order.

"They won't see the ship," replied John Carter. "We'll find a place to hide it before we get there. You will walk to the gates of Phundahl in plain harness, Vor Daj." He smiled. "I know how well the officers of my ships like to walk."

As we flew on toward Phundahl we removed the insignia and ornaments from our harnesses that we might come to the gates in the plain leather of unattached panthans. Even then, we knew, we might not be admitted to the city, as Martians are always suspicious of strangers and because spies sometimes come in the guise of panthans. With my assistance, John Carter stained the light skin of his body with the reddish copper pigment that he always carries with him against any emergency that requires him to hide his identity and play the role of a native red man of Barsoom.

Sighting Phandahl in the distance, we flew low, just skimming the ground, taking advantage of the hills to hide us from sentries on the city wall; and within a few miles of our destination The Warlord brought the flier to a landing in a little canyon beside a small grove of sompus trees into which we taxied.

Removing the control levers, we buried them a short distance from the ship, blazing four surrounding trees in such a manner that we might easily locate the cache when we should return to the ship-if we ever did. Then we set out on foot for Phundahl.

Shortly after the Virginian soldier of fortune had arrived on Mars he had been given the name Dotar Sojat by the green Martian Tharks into whose hands he had fallen; but with the lapse of years the name had been practically forgotten, as it had been used for only a brief period by a few members of that wild horde, The Warlord now decided to adopt it for this adventure, while I retained my own name which was quite unknown in this part of the world; and so it was that Dotar Sojat and Vor Daj, two wandering panthans, trudged through the low hills to the west of Phundahl on this still Barsoomian morning. The mosslike ochre vegetation gave forth no sound beneath our sandalled feet. We moved as silently as our hard, sharp shadows which dogged our footsteps toward the east. Gay plumed voiceless birds watched us from the branches of skeel and sorapus trees, as silent as the beautiful insects which hovered around the gorgeous blooms of the pimalia and gloresta which grew in profusion in every depression of the hills that held Barsoom's scant moisture longest. Mars is a world of vast silences where even voiced creatures are muted as though by the consciousness of impending death, for Mars is a dying world. We abhor noise; and so our voices, like our music, are soft and low; and we are a people of few words. John Carter has told me of the din of Earthly cities and of the brasses and the drums and the cymbals of Earthly music, of the constant, senseless chatter of millions of voices saying nothing. I believe that such as these would drive Martians insane.

We were still in the hills and not yet in sight of the city when our attention was attracted by sounds above and behind us. We turned simultaneously to look back, and the sight that met our eyes was so astonishing that we could scarcely believe the evidence of our own senses. About twenty birds were winging toward us. That in itself was sufficiently astonishing, since they were easily identifiable as malagors, a species long presumed to be extinct; but to add to the incredibility of the sight that met our eyes, a warrior bestrode each of the giant birds. It was quite evident that they must have seen us; so it was quite useless to attempt to hide from them. They were already dropping lower, and presently they were circling us. With this opportunity for closer observation I was impressed by a certain grotesquerie in the appearance of the warriors. There was something a little inhuman about them, and yet they were quite evidently human beings similar to ourselves. One of them carried a woman in front of him on the neck of the great bird that was his mount; but as they were all in constant motion I was unable to obtain a really good look at her; nor, by the same token, of the others.