They lowered their swords and Lakor spoke.

  "I know not whom you may be, with the white skin of a thern and the black hair of a red man; but were it only Thurid whose safety were at stake you might pass, and welcome, in so far as we be concerned.

  "Tell us who you be, and what mission calls you to this unknown world beneath the Valley Dor, then maybe we can see our way to let you pass upon the errand which we should like to undertake would our orders permit."

  I was surprised that neither of them had recognized me, for I thought that I was quite sufficiently well known either by personal experience or reputation to every thern upon Barsoom as to make my identity immediately apparent in any part of the planet. In fact, I was the only white man upon Mars whose hair was black and whose eyes were gray, with the exception of my son, Carthoris.

  To reveal my identity might be to precipitate an attack, for every thern upon Barsoom knew that to me they owed the fall of their age-old spiritual supremacy. On the other hand my reputation as a fighting man might be sufficient to pass me by these two were their livers not of the right complexion to welcome a battle to the death.

  To be quite candid I did not attempt to delude myself with any such sophistry, since I knew well that upon war-like Mars there are few cowards, and that every man, whether prince, priest, or peasant, glories in deadly strife. And so I gripped my long-sword the tighter as I replied to Lakor.

  "I believe that you will see the wisdom of permitting me to pass unmolested," I said, "for it would avail you nothing to die uselessly in the rocky bowels of Barsoom merely to protect a hereditary enemy, such as Thurid, Dator of the First Born.

  "That you shall die should you elect to oppose me is evidenced by the moldering corpses of all the many great Barsoomian warriors who have gone down beneath this blade—I am John Carter, Prince of Helium."

  For a moment that name seemed to paralyze the two men; but only for a moment, and then the younger of them, with a vile name upon his lips, rushed toward me with ready sword.

  He had been standing a little behind his companion, Lakor, during our parley, and now, ere he could engage me, the older man grasped his harness and drew him back.

  "Hold!" commanded Lakor. "There will be plenty of time to fight if we find it wise to fight at all. There be good reasons why every thern upon Barsoom should yearn to spill the blood of the blasphemer, the sacrilegist; but let us mix wisdom with our righteous hate. The Prince of Helium is bound upon an errand which we ourselves, but a moment since, were wishing that we might undertake.

  "Let him go then and slay the black. When he returns we shall still be here to bar his way to the outer world, and thus we shall have rid ourselves of two enemies, nor have incurred the displeasure of the Father of Therns."

  As he spoke I could not but note the crafty glint in his evil eyes, and while I saw the apparent logic of his reasoning I felt, subconsciously perhaps, that his words did but veil some sinister intent. The other thern turned toward him in evident surprise, but when Lakor had whispered a few brief words into his ear he, too, drew back and nodded acquiescence to his superior's suggestion.

  "Proceed, John Carter," said Lakor; "but know that if Thurid does not lay you low there will be those awaiting your return who will see that you never pass again into the sunlight of the upper world. Go!"

  During our conversation Woola had been growling and bristling close to my side. Occasionally he would look up into my face with a low, pleading whine, as though begging for the word that would send him headlong at the bare throats before him. He, too, sensed the villainy behind the smooth words.

  Beyond the therns several doorways opened off the guardroom, and toward the one upon the extreme right Lakor motioned.

  "That way leads to Thurid," he said.

  But when I would have called Woola to follow me there the beast whined and held back, and at last ran quickly to the first opening at the left, where he stood emitting his coughing bark, as though urging me to follow him upon the right way.

  I turned a questioning look upon Lakor.

  "The brute is seldom wrong," I said, "and while I do not doubt your superior knowledge, Thern, I think that I shall do well to listen to the voice of instinct that is backed by love and loyalty."

  As I spoke I smiled grimly that he might know without words that I distrusted him.

  "As you will," the fellow replied with a shrug. "In the end it shall be all the same."

  I turned and followed Woola into the left-hand passage, and though my back was toward my enemies, my ears were on the alert; yet I heard no sound of pursuit. The passageway was dimly lighted by occasional radium bulbs, the universal lighting medium of Barsoom.

  These same lamps may have been doing continuous duty in these subterranean chambers for ages, since they require no attention and are so compounded that they give off but the minutest of their substance in the generation of years of luminosity.

  We had proceeded for but a short distance when we commenced to pass the mouths of diverging corridors, but not once did Woola hesitate. It was at the opening to one of these corridors upon my right that I presently heard a sound that spoke more plainly to John Carter, fighting man, than could the words of my mother tongue—it was the clank of metal—the metal of a warrior's harness—and it came from a little distance up the corridor upon my right.

  Woola heard it, too, and like a flash he had wheeled and stood facing the threatened danger, his mane all abristle and all his rows of glistening fangs bared by snarling, backdrawn lips. With a gesture I silenced him, and together we drew aside into another corridor a few paces farther on.

  Here we waited; nor did we have long to wait, for presently we saw the shadows of two men fall upon the floor of the main corridor athwart the doorway of our hiding place. Very cautiously they were moving now—the accidental clank that had alarmed me was not repeated.

  Presently they came opposite our station; nor was I surprised to see that the two were Lakor and his companion of the guardroom.

  They walked very softly, and in the right hand of each gleamed a keen long-sword. They halted quite close to the entrance of our retreat, whispering to each other.

  "Can it be that we have distanced them already?" said Lakor.

  "Either that or the beast has led the man upon a wrong trail," replied the other, "for the way which we took is by far the shorter to this point—for him who knows it. John Carter would have found it a short road to death had he taken it as you suggested to him."

  "Yes," said Lakor, "no amount of fighting ability would have saved him from the pivoted flagstone. He surely would have stepped upon it, and by now, if the pit beneath it has a bottom, which Thurid denies, he should have been rapidly approaching it. Curses on that calot of his that warned him toward the safer avenue!"

  "There be other dangers ahead of him, though," spoke Lakor's fellow, "which he may not so easily escape—should he succeed in escaping our two good swords. Consider, for example, what chance he will have, coming unexpectedly into the chamber of—"

  I would have given much to have heard the balance of that conversation that I might have been warned of the perils that lay ahead, but fate intervened, and just at the very instant of all other instants that I would not have elected to do it, I sneezed.

  The Temple of the Sun

  *

  There was nothing for it now other than to fight; nor did I have any advantage as I sprang, sword in hand, into the corridor before the two therns, for my untimely sneeze had warned them of my presence and they were ready for me.

  There were no words, for they would have been a waste of breath. The very presence of the two proclaimed their treachery. That they were following to fall upon me unawares was all too plain, and they, of course, must have known that I understood their plan.

  In an instant I was engaged with both, and though I loathe the very name of thern, I must in all fairness admit that they are mighty swordsmen; and these two were no exception, unless it were that they were ev
en more skilled and fearless than the average among their race.

  While it lasted it was indeed as joyous a conflict as I ever had experienced. Twice at least I saved my breast from the mortal thrust of piercing steel only by the wondrous agility with which my earthly muscles endow me under the conditions of lesser gravity and air pressure upon Mars.

  Yet even so I came near to tasting death that day in the gloomy corridor beneath Mars's southern pole, for Lakor played a trick upon me that in all my experience of fighting upon two planets I never before had witnessed the like of.

  The other thern was engaging me at the time, and I was forcing him back—touching him here and there with my point until he was bleeding from a dozen wounds, yet not being able to penetrate his marvelous guard to reach a vulnerable spot for the brief instant that would have been sufficient to send him to his ancestors.

  It was then that Lakor quickly unslung a belt from his harness, and as I stepped back to parry a wicked thrust he lashed one end of it about my left ankle so that it wound there for an instant, while he jerked suddenly upon the other end, throwing me heavily upon my back.

  Then, like leaping panthers, they were upon me; but they had reckoned without Woola, and before ever a blade touched me, a roaring embodiment of a thousand demons hurtled above my prostrate form and my loyal Martian calot was upon them.

  Imagine, if you can, a huge grizzly with ten legs armed with mighty talons and an enormous froglike mouth splitting his head from ear to ear, exposing three rows of long, white tusks. Then endow this creature of your imagination with the agility and ferocity of a half-starved Bengal tiger and the strength of a span of bulls, and you will have some faint conception of Woola in action.

  Before I could call him off he had crushed Lakor into a jelly with a single blow of one mighty paw, and had literally torn the other thern to ribbons; yet when I spoke to him sharply he cowed sheepishly as though he had done a thing to deserve censure and chastisement.

  Never had I had the heart to punish Woola during the long years that had passed since that first day upon Mars when the green jed of the Tharks had placed him on guard over me, and I had won his love and loyalty from the cruel and loveless masters of his former life, yet I believe he would have submitted to any cruelty that I might have inflicted upon him, so wondrous was his affection for me.

  The diadem in the center of the circlet of gold upon the brow of Lakor proclaimed him a Holy Thern, while his companion, not thus adorned, was a lesser thern, though from his harness I gleaned that he had reached the Ninth Cycle, which is but one below that of the Holy Therns.

  As I stood for a moment looking at the gruesome havoc Woola had wrought, there recurred to me the memory of that other occasion upon which I had masqueraded in the wig, diadem, and harness of Sator Throg, the Holy Thern whom Thuvia of Ptarth had slain, and now it occurred to me that it might prove of worth to utilize Lakor's trappings for the same purpose.

  A moment later I had torn his yellow wig from his bald pate and transferred it and the circlet, as well as all his harness, to my own person.

  Woola did not approve of the metamorphosis. He sniffed at me and growled ominously, but when I spoke to him and patted his huge head he at length became reconciled to the change, and at my command trotted off along the corridor in the direction we had been going when our progress had been interrupted by the therns.

  We moved cautiously now, warned by the fragment of conversation I had overheard. I kept abreast of Woola that we might have the benefit of all our eyes for what might appear suddenly ahead to menace us, and well it was that we were forewarned.

  At the bottom of a flight of narrow steps the corridor turned sharply back upon itself, immediately making another turn in the original direction, so that at that point it formed a perfect letter S, the top leg of which debouched suddenly into a large chamber, illy lighted, and the floor of which was completely covered by venomous snakes and loathsome reptiles.

  To have attempted to cross that floor would have been to court instant death, and for a moment I was almost completely discouraged. Then it occurred to me that Thurid and Matai Shang with their party must have crossed it, and so there was a way.

  Had it not been for the fortunate accident by which I overheard even so small a portion of the therns' conversation we should have blundered at least a step or two into that wriggling mass of destruction, and a single step would have been all-sufficient to have sealed our doom.

  These were the only reptiles I had ever seen upon Barsoom, but I knew from their similarity to the fossilized remains of supposedly extinct species I had seen in the museums of Helium that they comprised many of the known prehistoric reptilian genera, as well as others undiscovered.

  A more hideous aggregation of monsters had never before assailed my vision. It would be futile to attempt to describe them to Earth men, since substance is the only thing which they possess in common with any creature of the past or present with which you are familiar—even their venom is of an unearthly virulence that, by comparison, would make the cobra de capello seem quite as harmless as an angleworm.

  As they spied me there was a concerted rush by those nearest the entrance where we stood, but a line of radium bulbs inset along the threshold of their chamber brought them to a sudden halt—evidently they dared not cross that line of light.

  I had been quite sure that they would not venture beyond the room in which I had discovered them, though I had not guessed at what deterred them. The simple fact that we had found no reptiles in the corridor through which we had just come was sufficient assurance that they did not venture there.

  I drew Woola out of harm's way, and then began a careful survey of as much of the Chamber of Reptiles as I could see from where I stood. As my eyes became accustomed to the dim light of its interior I gradually made out a low gallery at the far end of the apartment from which opened several exits.

  Coming as close to the threshold as I dared, I followed this gallery with my eyes, discovering that it circled the room as far as I could see. Then I glanced above me along the upper edge of the entrance to which we had come, and there, to my delight, I saw an end of the gallery not a foot above my head. In an instant I had leaped to it and called Woola after me.

  Here there were no reptiles—the way was clear to the opposite side of the hideous chamber—and a moment later Woola and I dropped down to safety in the corridor beyond.

  Not ten minutes later we came into a vast circular apartment of white marble, the walls of which were inlaid with gold in the strange hieroglyphics of the First Born.

  From the high dome of this mighty apartment a huge circular column extended to the floor, and as I watched I saw that it slowly revolved.

  I had reached the base of the Temple of the Sun!

  Somewhere above me lay Dejah Thoris, and with her were Phaidor, daughter of Matai Shang, and Thuvia of Ptarth. But how to reach them, now that I had found the only vulnerable spot in their mighty prison, was still a baffling riddle.

  Slowly I circled the great shaft, looking for a means of ingress. Part way around I found a tiny radium flash torch, and as I examined it in mild curiosity as to its presence there in this almost inaccessible and unknown spot, I came suddenly upon the insignia of the house of Thurid jewel-inset in its metal case.

  I am upon the right trail, I thought, as I slipped the bauble into the pocket-pouch which hung from my harness. Then I continued my search for the entrance, which I knew must be somewhere about; nor had I long to search, for almost immediately thereafter I came upon a small door so cunningly inlaid in the shaft's base that it might have passed unnoticed by a less keen or careful observer.

  There was the door that would lead me within the prison, but where was the means to open it? No button or lock were visible. Again and again I went carefully over every square inch of its surface, but the most that I could find was a tiny pinhole a little above and to the right of the door's center—a pinhole that seemed only an accident of manufacture or an impe
rfection of material.

  Into this minute aperture I attempted to peer, but whether it was but a fraction of an inch deep or passed completely through the door I could not tell—at least no light showed beyond it. I put my ear to it next and listened, but again my efforts brought negligible results.

  During these experiments Woola had been standing at my side gazing intently at the door, and as my glance fell upon him it occurred to me to test the correctness of my hypothesis, that this portal had been the means of ingress to the temple used by Thurid, the black dator, and Matai Shang, Father of Therns.

  Turning away abruptly, I called to him to follow me. For a moment he hesitated, and then leaped after me, whining and tugging at my harness to draw me back. I walked on, however, some distance from the door before I let him have his way, that I might see precisely what he would do. Then I permitted him to lead me wherever he would.

  Straight back to that baffling portal he dragged me, again taking up his position facing the blank stone, gazing straight at its shining surface. For an hour I worked to solve the mystery of the combination that would open the way before me.

  Carefully I recalled every circumstance of my pursuit of Thurid, and my conclusion was identical with my original belief—that Thurid had come this way without other assistance than his own knowledge and passed through the door that barred my progress, unaided from within. But how had he accomplished it?

  I recalled the incident of the Chamber of Mystery in the Golden Cliffs that time I had freed Thuvia of Ptarth from the dungeon of the therns, and she had taken a slender, needle-like key from the keyring of her dead jailer to open the door leading back into the Chamber of Mystery where Tars Tarkas fought for his life with the great banths. Such a tiny keyhole as now defied me had opened the way to the intricate lock in that other door.

  Hastily I dumped the contents of my pocket-pouch upon the ground before me. Could I but find a slender bit of steel I might yet fashion a key that would give me ingress to the temple prison.