I am in time! I am in time! The words surged through my brain again and again, until at last I must have voiced them audibly, for Yersted shook his head.

"In time to save your Princess?" he asked, and then without waiting for my reply, "No, John Carter, Issus will not give up her own. She knows that you are coming, and ere ever a vandal foot is set within the precincts of the Temple of Issus, if such a calamity should befall, Dejah Thoris will be put away for ever from the last faint hope of rescue."

"You mean that she will be killed merely to thwart me?" I asked.

"Not that, other than as a last resort," he replied. "Hast ever heard of the Temple of the Sun? It is there that they will put her. It lies far within the inner court of the Temple of Issus, a little temple that raises a thin spire far above the spires and minarets of the great temple that surrounds it. Beneath it, in the ground, there lies the main body of the temple consisting in six hundred and eighty-seven circular chambers, one below another. To each chamber a single corridor leads through solid rock from the pits of Issus.

"As the entire Temple of the Sun revolves once with each revolution of Barsoom about the sun, but once each year does the entrance to each separate chamber come opposite the mouth of the corridor which forms its only link to the world without.

"Here Issus puts those who displease her, but whom she does not care to execute forthwith. Or to punish a noble of the First Born she may cause him to be placed within a chamber of the Temple of the Sun for a year. Ofttimes she imprisons an executioner with the condemned, that death may come in a certain horrible form upon a given day, or again but enough food is deposited in the chamber to sustain life but the number of days that Issus has allotted for mental anguish.

"Thus will Dejah Thoris die, and her fate will be sealed by the first alien foot that crosses the threshold of Issus."

So I was to be thwarted in the end, although I had performed the miraculous and come within a few short moments of my divine Princess, yet was I as far from her as when I stood upon the banks of the Hudson forty-eight million miles away.

Yersted's information convinced me that there was no time to be lost. I must reach the Temple of Issus secretly before the forces under Tars Tarkas assaulted at dawn. Once within its hated walls I was positive that I could overcome the guards of Issus and bear away my Princess, for at my back I would have a force ample for the occasion.

No sooner had Carthoris and the others joined me than we commenced the transportation of our men through the submerged passage to the mouth of the gangways which lead from the submarine pool at the temple end of the watery tunnel to the pits of Issus.

Many trips were required, but at last all stood safely together again at the beginning of the end of our quest. Five thousand strong we were, all seasoned fighting-men of the most warlike race of the red men of Barsoom.

As Carthoris alone knew the hidden ways of the tunnels we could not divide the party and attack the temple at several points at once as would have been most desirable, and so it was decided that he lead us all as quickly as possible to a point near the temple's centre.

As we were about to leave the pool and enter the corridor, an officer called my attention to the waters upon which the submarine floated. At first they seemed to be merely agitated as from the movement of some great body beneath the surface, and I at once conjectured that another submarine was rising to the surface in pursuit of us; but presently it became apparent that the level of the waters was rising, not with extreme rapidity, but very surely, and that soon they would overflow the sides of the pool and submerge the floor of the chamber.

For a moment I did not fully grasp the terrible import of the slowly rising water. It was Carthoris who realized the full meaning of the thing-its cause and the reason for it.

"Haste!" he cried. "If we delay, we all are lost. The pumps of Omean have been stopped. They would drown us like rats in a trap. We must reach the upper levels of the pits in advance of the flood or we shall never reach them. Come."

"Lead the way, Carthoris," I cried. "We will follow."

At my command, the youth leaped into one of the corridors, and in column of twos the soldiers followed him in good order, each company entering the corridor only at the command of its dwar, or captain.

Before the last company filed from the chamber the water was ankle deep, and that the men were nervous was quite evident. Entirely unaccustomed to water except in quantities sufficient for drinking and bathing purposes the red Martians instinctively shrank from it in such formidable depths and menacing activity. That they were undaunted while it swirled and eddied about their ankles, spoke well for their bravery and their discipline.

I was the last to leave the chamber of the submarine, and as I followed the rear of the column toward the corridor, I moved through water to my knees. The corridor, too, was flooded to the same depth, for its floor was on a level with the floor of the chamber from which it led, nor was there any perceptible rise for many yards.

The march of the troops through the corridor was as rapid as was consistent with the number of men that moved through so narrow a passage, but it was not ample to permit us to gain appreciably on the pursuing tide. As the level of the passage rose, so, too, did the waters rise until it soon became apparent to me, who brought up the rear, that they were gaining rapidly upon us. I could understand the reason for this, as with the narrowing expanse of Omean as the waters rose toward the apex of its dome, the rapidity of its rise would increase in inverse ratio to the ever-lessening space to be filled.

Long ere the last of the column could hope to reach the upper pits which lay above the danger point I was convinced that the waters would surge after us in overwhelming volume, and that fully half the expedition would be snuffed out.

As I cast about for some means of saving as many as possible of the doomed men, I saw a diverging corridor which seemed to rise at a steep angle at my right. The waters were now swirling about my waist. The men directly before me were quickly becoming panic-stricken. Something must be done at once or they would rush forward upon their fellows in a mad stampede that would result in trampling down hundreds beneath the flood and eventually clogging the passage beyond any hope of retreat for those in advance.

Raising my voice to its utmost, I shouted my command to the dwars ahead of me.

"Call back the last twenty-five utans," I shouted. "Here seems a way of escape. Turn back and follow me."

My orders were obeyed by nearer thirty utans, so that some three thousand men came about and hastened into the teeth of the flood to reach the corridor up which I directed them.

As the first dwar passed in with his utan I cautioned him to listen closely for my commands, and under no circumstances to venture into the open, or leave the pits for the temple proper until I should have come up with him, "or you know that I died before I could reach you."

The officer saluted and left me. The men filed rapidly past me and entered the diverging corridor which I hoped would lead to safety. The water rose breast high. Men stumbled, floundered, and went down. Many I grasped and set upon their feet again, but alone the work was greater than I could cope with. Soldiers were being swept beneath the boiling torrent, never to rise. At length the dwar of the 10th utan took a stand beside me. He was a valorous soldier, Gur Tus by name, and together we kept the now thoroughly frightened troops in the semblance of order and rescued many that would have drowned otherwise.