As he ceased speaking a weird call rang out across the waters of Omean. I had heard it at the same time the previous evening and knew that it marked the ending of the day, when the men of Omean spread their silks upon the deck of battleship and cruiser and fall into the dreamless sleep of Mars.

Our guard entered to inspect us for the last time before the new day broke upon the world above. His duty was soon performed and the heavy door of our prison closed behind him-we were alone for the night.

I gave him time to return to his quarters, as Xodar said he probably would do, then I sprang to the grated window and surveyed the nearby waters. At a little distance from the island, a quarter of a mile perhaps, lay a monster battleship, while between her and the shore were a number of smaller cruisers and one-man scouts. Upon the battleship alone was there a watch. I could see him plainly in the upper works of the ship, and as I watched I saw him spread his sleeping silks upon the tiny platform in which he was stationed. Soon he threw himself at full length upon his couch. The discipline on Omean was lax indeed. But it is not to be wondered at since no enemy guessed the existence upon Barsoom of such a fleet, or even of the First Born, or the Sea of Omean. Why indeed should they maintain a watch?

Presently I dropped to the floor again and talked with Xodar, describing the various craft I had seen.

"There is one there," he said, "my personal property, built to carry five men, that is the swiftest of the swift. If we can board her we can at least make a memorable run for liberty," and then he went on to describe to me the equipment of the boat; her engines, and all that went to make her the flier that she was.

In his explanation I recognized a trick of gearing that Kantos Kan had taught me that time we sailed under false names in the navy of Zodanga beneath Sab Than, the Prince. And I knew then that the First Born had stolen it from the ships of Helium, for only they are thus geared. And I knew too that Xodar spoke the truth when he lauded the speed of his little craft, for nothing that cleaves the thin air of Mars can approximate the speed of the ships of Helium.

We decided to wait for an hour at least until all the stragglers had sought their silks. In the meantime I was to fetch the red youth to our cell so that we would be in readiness to make our rash break for freedom together.

I sprang to the top of our partition wall and pulled myself up on to it. There I found a flat surface about a foot in width and along this I walked until I came to the cell in which I saw the boy sitting upon his bench. He had been leaning back against the wall looking up at the glowing dome above Omean, and when he spied me balancing upon the partition wall above him his eyes opened wide in astonishment. Then a wide grin of appreciative understanding spread across his countenance.

As I stooped to drop to the floor beside him he motioned me to wait, and coming close below me whispered: "Catch my hand; I can almost leap to the top of that wall myself. I have tried it many times, and each day I come a little closer. Some day I should have been able to make it."

I lay upon my belly across the wall and reached my hand far down toward him. With a little run from the centre of the cell he sprang up until I grasped his outstretched hand, and thus I pulled him to the wall's top beside me.

"You are the first jumper I ever saw among the red men of Barsoom," I said.

He smiled. "It is not strange. I will tell you why when we have more time."

Together we returned to the cell in which Xodar sat; descending to talk with him until the hour had passed.

There we made our plans for the immediate future, binding ourselves by a solemn oath to fight to the death for one another against whatsoever enemies should confront us, for we knew that even should we succeed in escaping the First Born we might still have a whole world against us-the power of religious superstition is mighty.

It was agreed that I should navigate the craft after we had reached her, and that if we made the outer world in safety we should attempt to reach Helium without a stop.

"Why Helium?" asked the red youth.

"I am a prince of Helium," I replied.

He gave me a peculiar look, but said nothing further on the subject. I wondered at the time what the significance of his expression might be, but in the press of other matters it soon left my mind, nor did I have occasion to think of it again until later.

"Come," I said at length, "now is as good a time as any. Let us go."

Another moment found me at the top of the partition wall again with the boy beside me. Unbuckling my harness I snapped it together with a single long strap which I lowered to the waiting Xodar below. He grasped the end and was soon sitting beside us.

"How simple," he laughed.

"The balance should be even simpler," I replied. Then I raised myself to the top of the outer wall of the prison, just so that I could peer over and locate the passing sentry. For a matter of five minutes I waited and then he came in sight on his slow and snail-like beat about the structure.

I watched him until he had made the turn at the end of the building which carried him out of sight of the side of the prison that was to witness our dash for freedom. The moment his form disappeared I grasped Xodar and drew him to the top of the wall. Placing one end of my harness strap in his hands I lowered him quickly to the ground below. Then the boy grasped the strap and slid down to Xodar's side.

In accordance with our arrangement they did not wait for me, but walked slowly toward the water, a matter of a hundred yards, directly past the guard-house filled with sleeping soldiers.

They had taken scarce a dozen steps when I too dropped to the ground and followed them leisurely toward the shore. As I passed the guard-house the thought of all the good blades lying there gave me pause, for if ever men were to have need of swords it was my companions and I on the perilous trip upon which we were about to embark.

I glanced toward Xodar and the youth and saw that they had slipped over the edge of the dock into the water. In accordance with our plan they were to remain there clinging to the metal rings which studded the concrete-like substance of the dock at the water's level, with only their mouths and noses above the surface of the sea, until I should join them.

The lure of the swords within the guard-house was strong upon me, and I hesitated a moment, half inclined to risk the attempt to take the few we needed. That he who hesitates is lost proved itself a true aphorism in this instance, for another moment saw me creeping stealthily toward the door of the guard-house.

Gently I pressed it open a crack; enough to discover a dozen blacks stretched upon their silks in profound slumber. At the far side of the room a rack held the swords and firearms of the men. Warily I pushed the door a trifle wider to admit my body. A hinge gave out a resentful groan. One of the men stirred, and my heart stood still. I cursed myself for a fool to have thus jeopardized our chances for escape; but there was nothing for it now but to see the adventure through.

With a spring as swift and as noiseless as a tiger's I lit beside the guardsman who had moved. My hands hovered about his throat awaiting the moment that his eyes should open. For what seemed an eternity to my overwrought nerves I remained poised thus. Then the fellow turned again upon his side and resumed the even respiration of deep slumber.

Carefully I picked my way between and over the soldiers until I had gained the rack at the far side of the room. Here I turned to survey the sleeping men. All were quiet. Their regular breathing rose and fell in a soothing rhythm that seemed to me the sweetest music I ever had heard.