These three, then, I had chosen to be my partners in my great adventure. It is true that I had not discussed the matter with any one of them, but my judgment assured me that I would have no difficulty in enlisting their services and loyalty in return for their total resurrection.

My first task lay in renewing the organs of 378-J-493811-P and of Gor Hajus, which had been injured by the wounds that had laid them low; the former requiring a new lung and the latter a new heart, his executioner having run him through with a short-sword. I hesitated to ask Ras Thavas' permission to experiment on these subjects for fear of the possibility of arousing his suspicions, in which event he would probably have them destroyed, and so I was forced to accomplish my designs by subterfuge and stealth. To this end I made it a practice for weeks to carry my regular laboratory work far into the night, often requiring the services of various assistants that all might become accustomed to the sight of me at work at unusual hours. In my selection of these assistants I made it a point to choose two of the very spies that Ras Thavas had set to watching me. While it was true that they were no longer employed in this particular service, I had hopes that they would carry word of my activities to their master; and I was careful to see that they received from me the proper suggestions that would mould their report in language far from harmful to me. By the merest suggestion I carried to them the idea that I worked thus late purely for the love of the work itself and the tremendous interest in it that Ras Thavas had awakened within my mind. Some nights I worked with assistants and as often I did not, but always I was careful to assure myself that the following morning those in the office were made aware that I had labored far into the preceding night.

This groundwork carefully prepared, I had comparatively little fear of the results of actual discovery when I set to work upon the warrior of Phundahl and the assassin of Toonol. I chose the former first. His lung was badly injured where my blade had passed through it, but from the laboratory where were kept fractional bodies I brought a perfect lung, with which I replaced the one that I had ruined. The work occupied but half the night. So anxious was I to complete my task that I immediately opened up the breast of Gor Hajus, for whom I had selected an unusually strong and powerful heart and by working rapidly I succeeded in completing the transference before dawn. Having known the nature of the wounds that had dispatched these two men, I had spent weeks in performing similar operations that I might perfect myself especially in this work; and having encountered no unusual pathological conditions in either subject, the work had progressed smoothly and with great rapidity. I had completed what I had feared would be the most difficult part of my task and now, having removed as far as possible all signs of the operation except the therapeutic tape which closed the incisions, I returned to my quarters for a few minutes of much-needed rest, praying that Ras Thavas would not by any chance examine either of the subjects upon which I had been working, although I had fortified myself against such a contingency by entering full details of the operation upon the history card of each subject that, in the event of discovery, any suspicion of ulterior motives upon my part might be allayed by my play of open frankness.

I arose at the usual time and went at once to Ras Thavas' apartment, where I was met with a bombshell that nearly wrecked my composure. He eyed me closely for a long minute before he spoke.

"You worked late last night, Vad Varo," he said.

"I often do," I replied, lightly; but my heart was heavy as a stone.

"And what might it have been that so occupied your interest?" he inquired.

I felt as a mouse with which the cat is playing. "I have been doing quite a little lung and heart transference of late," I replied, "and I became so engrossed with my work that I did not note the passage of time."

"I have known that you worked late at night. Do you think it wise?"

At that moment I felt that it had been very unwise, yet I assured him to the contrary.

"I was restless," he said. "I could not sleep and so I went to your quarters after midnight, but you were not there. I wanted someone with whom to talk, but your slaves knew only that you were not there-where you were they did not know-so I set out to search for you." My heart went into my sandals. "I guessed that you were in one of the laboratories, but though I visited several I did not find you." My heart arose with the lightness of a feather. "Since my own transference I have been cursed with restlessness and sleeplessness, so that I could almost wish for the return of my old corpse-the youth of my body harmonizes not with the antiquity of my brain. It is filled with latent urges and desires that comport illy with the serious subject matter of my mind."

"What your body needs," I said, "is exercise. It is young, strong, virile. Work it hard and it will let your brain rest at night."

"I know that you are right," he replied. "I have reached that same conclusion myself. In fact, not finding you, I walked in the gardens for an hour or more before returning to my quarters, and then I slept soundly. I shall walk every night when I cannot sleep, or I shall go into the laboratories and work as do you."

This news was most disquieting. Now I could never be sure but that Ras Thavas was wandering about at night and I had one more very important night's work to do, perhaps two. The only way that I could be sure of him was to be with him.

"Send for me when you are restless," I said, "and I will walk and work with you. You should not go about thus at night alone."

"Very well," he said, "I may do that occasionally."

I hoped that he would do it always, for then I would know that when he failed to send for me he was safe in his own quarters. Yet I saw that I must henceforth face the menace of detection; and knowing this I determined to hasten the completion of my plans and to risk everything on a single bold stroke.

That night I had no opportunity to put it into action as Ras Thavas sent for me early and informed me that we would walk in the gardens until he was tired. Now, as I needed a full night for what I had in mind and as Ras Thavas walked until midnight, I was compelled to forego everything for that evening, but the following morning I persuaded him to walk early on the pretext that I should like to go beyond the enclosure and see something of Barsoom besides the inside of his laboratories and his gardens. I had little confidence that he would grant my request, yet he did so. I am sure he never would have done it had he possessed his old body; but thus greatly had young blood changed Ras Thavas.

I had never been beyond the buildings, nor had I seen beyond, since there were no windows in the outside walls of any of the structures and upon the garden side the trees had grown to such a height that they obstructed all view beyond them. For a time we walked in another garden just inside the outer wall, and then I asked Ras Thavas if I might go even beyond this.

"No," he said. "It would not be safe."

"And why not?" I asked.

"I will show you and at the same time give you a much broader view of the outside world than you could obtain by merely passing through the gate. Come, follow me!" He led me immediately to a lofty tower that rose at the corner of the largest building of the group that comprised his vast establishment. Within was a circular runway which led not only upward, but down as well. This we ascended, passing openings at each floor, until we came at last out upon its lofty summit.

About me spread the first Barsoomian landscape of any extent upon which my eyes had yet rested during the long months that I had spent upon the Red Planet. For almost an Earthly year I had been immured within the grim walls of Ras Thavas' bloody laboratory, until, such creatures of habit are we, the weird life there had grown to seem quite natural and ordinary; but with this first glimpse of open country there surged up within me an urge for freedom, for space, for room to move about, such as I knew would not be long denied.