Hor Vastus turned in the direction indicated by Carthoris, and as his eyes fell upon me he was like to have collapsed from sheer surprise.

"John Carter!" he exclaimed, and then a sudden troubled look came into his eyes. "My Prince," he started, "where hast thou-" and then he stopped, but I knew the question that his lips dared not frame. The loyal fellow would not be the one to force from mine a confession of the terrible truth that I had returned from the bosom of the Iss, the River of Mystery, back from the shore of the Lost Sea of Korus, and the Valley Dor.

"Ah, my Prince," he continued, as though no thought had interrupted his greeting, "that you are back is sufficient, and let Hor Vastus' sword have the high honour of being first at thy feet." With these words the noble fellow unbuckled his scabbard and flung his sword upon the ground before me.

Could you know the customs and the character of red Martians you would appreciate the depth of meaning that that simple act conveyed to me and to all about us who witnessed it. The thing was equivalent to saying, "My sword, my body, my life, my soul are yours to do with as you wish. Until death and after death I look to you alone for authority for my every act. Be you right or wrong, your word shall be my only truth. Whoso raises his hand against you must answer to my sword."

It is the oath of fealty that men occasionally pay to a Jeddak whose high character and chivalrous acts have inspired the enthusiastic love of his followers. Never had I known this high tribute paid to a lesser mortal. There was but one response possible. I stooped and lifted the sword from the ground, raised the hilt to my lips, and then, stepping to Hor Vastus, I buckled the weapon upon him with my own hands.

"Hor Vastus," I said, placing my hand upon his shoulder, "you know best the promptings of your own heart. That I shall need your sword I have little doubt, but accept from John Carter upon his sacred honour the assurance that he will never call upon you to draw this sword other than in the cause of truth, justice, and righteousness."

"That I knew, my Prince," he replied, "ere ever I threw my beloved blade at thy feet."

As we spoke other fliers came and went between the ground and the battleship, and presently a larger boat was launched from above, one capable of carrying a dozen persons, perhaps, and dropped lightly near us. As she touched, an officer sprang from her deck to the ground, and, advancing to Hor Vastus, saluted.

"Kantos Kan desires that this party whom we have rescued be brought immediately to the deck of the Xavarian," he said.

As we approached the little craft I looked about for the members of my party and for the first time noticed that Thuvia was not among them. Questioning elicited the fact that none had seen her since Carthoris had sent her thoat galloping madly toward the hills, in the hope of carrying her out of harm's way.

Immediately Hor Vastus dispatched a dozen air scouts in as many directions to search for her. It could not be possible that she had gone far since we had last seen her. We others stepped to the deck of the craft that had been sent to fetch us, and a moment later were upon the Xavarian.

The first man to greet me was Kantos Kan himself. My old friend had won to the highest place in the navy of Helium, but he was still to me the same brave comrade who had shared with me the privations of a Warhoon dungeon, the terrible atrocities of the Great Games, and later the dangers of our search for Dejah Thoris within the hostile city of Zodanga.

Then I had been an unknown wanderer upon a strange planet, and he a simple padwar in the navy of Helium. To-day he commanded all Helium's great terrors of the skies, and I was a Prince of the House of Tardos Mors, Jeddak of Helium.

He did not ask me where I had been. Like Hor Vastus, he too dreaded the truth and would not be the one to wrest a statement from me. That it must come some time he well knew, but until it came he seemed satisfied to but know that I was with him once more. He greeted Carthoris and Tars Tarkas with the keenest delight, but he asked neither where he had been. He could scarcely keep his hands off the boy.

"You do not know, John Carter," he said to me, "how we of Helium love this son of yours. It is as though all the great love we bore his noble father and his poor mother had been centred in him. When it became known that he was lost, ten million people wept."

"What mean you, Kantos Kan," I whispered, "by 'his poor mother'?" for the words had seemed to carry a sinister meaning which I could not fathom.

He drew me to one side.

"For a year," he said, "Ever since Carthoris disappeared, Dejah Thoris has grieved and mourned for her lost boy. The blow of years ago, when you did not return from the atmosphere plant, was lessened to some extent by the duties of motherhood, for your son broke his white shell that very night."

"That she suffered terribly then, all Helium knew, for did not all Helium suffer with her the loss of her lord! But with the boy gone there was nothing left, and after expedition upon expedition returned with the same hopeless tale of no clue as to his whereabouts, our beloved Princess drooped lower and lower, until all who saw her felt that it could be but a matter of days ere she went to join her loved ones within the precincts of the Valley Dor.

"As a last resort, Mors Kajak, her father, and Tardos Mors, her grandfather, took command of two mighty expeditions, and a month ago sailed away to explore every inch of ground in the northern hemisphere of Barsoom. For two weeks no word has come back from them, but rumours were rife that they had met with a terrible disaster and that all were dead.

"About this time Zat Arras renewed his importunities for her hand in marriage. He has been for ever after her since you disappeared. She hated him and feared him, but with both her father and grandfather gone, Zat Arras was very powerful, for he is still Jed of Zodanga, to which position, you will remember, Tardos Mors appointed him after you had refused the honour.

"He had a secret audience with her six days ago. What took place none knows, but the next day Dejah Thoris had disappeared, and with her had gone a dozen of her household guard and body servants, including Sola the green woman-Tars Tarkas' daughter, you recall. No word left they of their intentions, but it is always thus with those who go upon the voluntary pilgrimage from which none returns. We cannot think aught than that Dejah Thoris has sought the icy bosom of Iss, and that her devoted servants have chosen to accompany her.

"Zat Arras was at Helium when she disappeared. He commands this fleet which has been searching for her since. No trace of her have we found, and I fear that it be a futile quest."

While we talked, Hor Vastus' fliers were returning to the Xavarian. Not one, however, had discovered a trace of Thuvia. I was much depressed over the news of Dejah Thoris' disappearance, and now there was added the further burden of apprehension concerning the fate of this girl whom I believed to be the daughter of some proud Barsoomian house, and it had been my intention to make every effort to return her to her people.

I was about to ask Kantos Kan to prosecute a further search for her when a flier from the flagship of the fleet arrived at the Xavarian with an officer bearing a message to Kantos Kan from Arras.

My friend read the dispatch and then turned to me.

"Zat Arras commands me to bring our 'prisoners' before him. There is naught else to do. He is supreme in Helium, yet it would be far more in keeping with chivalry and good taste were he to come hither and greet the saviour of Barsoom with the honours that are his due."

"You know full well, my friend," I said, smiling, "that Zat Arras has good cause to hate me. Nothing would please him better than to humiliate me and then to kill me. Now that he has so excellent an excuse, let us go and see if he has the courage to take advantage of it."