I estimated that if there were human beings on Thuria and they were proportioned to their environment as man on Earth is to his, they would be but about nine-and-a-half inches tall and weigh between four and five pounds; and that an earth-man transported to Mars would be able to jump 225 feet into the air, make a standing broad jump of 450 feet and a running broad jump of 725 feet, and that a strong man could lift a mass equivalent to a weight of 4 tons on earth.
Against such a Titan, the tiny creatures of Thuria would be helpless- provided, of course, that Thuria were inhabited.
I suggested all this to Fal Sivas, but he shook his head impatiently. "There is something that you do not know," he said. "Perhaps Gar Nal, himself, does not know it. There is a peculiar relationship between Barsoom and her moons that does not exist between any of the other planets in the solar system and their satellites. The suggestion was made by an obscure scientist thousands of years ago, and then it seemed to have been forgotten. I discovered it in an ancient manuscript that I came upon by accident. It is in the original handwriting of the investigator and may have had no distribution whatsoever.
"However, the idea intrigued me; and over a period of twenty years I sought either to prove or disprove it. Eventually, I proved it conclusively."
"And what is it?" I asked.
"There exists between Barsoom and her satellites a peculiar relation which I have called a compensatory adjustment of masses. For example, let us consider a mass travelling from Barsoom to Thuria. As it approaches the nearer moon, it varies directly as the influences of the planet and the satellite vary. The ratio of the mass to the mass of Barsoom at the surface of Barsoom, therefore, would be the same as the ratio of the mass to the mass of Thuria, at the surface of Thuria.
"You were about right in assuming that an inhabitant of Thuria, if such exists, if he were of the same proportion to Thuria as you are to Barsoom, would be about eight sofs tall; and consequently, if my theory is correct, and I have no reason to doubt it, were you to travel from Barsoom to Thuria you would be but eight sofs tall when you reached the surface of the moon."
"Preposterous!" I exclaimed.
He flushed angrily. "You are nothing but an ignorant assassin," he cried. "How dare you question the knowledge of Fal Sivas? But enough of this; return to your quarters. I must get on with my work."
"I am going to Thuria," I said; "and if you won't go with me, I shall go alone."
He had turned back to enter his little laboratory, but I had followed him and was close behind him.
"Go away from here," he said; "keep out, or I will have you killed."
Just then I heard a cry from the room behind him, and a woman's voice calling, "Vandor! Vandor, save me!"
Fal Sivas went livid and tried to dash into the room and close the door in my face, but I was too quick for him. I leaped to the door and pushed him aside as I stepped in.
A terrible sight met my eyes. On marble slabs, raised about four feet from the floor, several women were securely strapped, so that they could not move a limb or raise their heads. There were four of them. Portions of the skulls of three had been removed, but they were still conscious. I could see their frightened, horrified eyes turn toward us.
I turned upon Fal Sivas. "What is the meaning of this?" I cried. "What hellish business are you up to?"
"Get out! Get out!" he screamed. "How dare you invade the holy precincts of science? Who are you, dog, worm, to question what Fal Sivas does; to interfere with the work of a brain the magnitude of which you cannot conceive? Get out! Get out! or I will have you killed."
"And who will kill me?" I demanded. "Put these poor creatures out of their misery, and then I will attend to you."
So great was either his rage or his terror, or both, that he trembled all over like a man with the palsy; and then, before I could stop him, he turned and darted from the room.
I knew that he had gone for help; that presently I should probably have all the inmates of his hellish abode upon me.
I might have pursued him, but I was afraid that something might happen here while I was gone, and so I turned back to the girl on the fourth slab. It was Zanda.
I stepped quickly to her side. I saw that she had not yet been subjected to Fal Sivas's horrid operation, and drawing my dagger I cut the bonds that held her.
She slipped from the table and threw her arms about my neck. "Oh, Vandor, Vandor," she cried, "now we must both die. They come! I hear them."
CHAPTER XIII. PURSUED
Heralding the approach of armed men was the clank of metal on metal. How many were coming, I did not know; but here I was with only my own sword between me and death and my back against the wall.
Zanda was without hope, but she remained cool and did not lose her head. In those few brief moments I could see that she was courageous.
"Give me your dagger, Vandor," she said.
"Why?" I asked.
"They will kill you, but Fal Sivas shall not have me nor these others to torture further."
"I am not dead, yet," I reminded her.
"I shall not kill myself until you are dead; but these others, there is no hope for them. They pray for merciful death. Let me put them out of their misery."
I winced at the thought, but I knew that she was right, and I handed her my dagger. It was a thing that I should have had to have done myself. It took much more courage than facing armed men, and I was glad to be relieved of the ghastly job.
Zanda was behind me now. I could not see what she was doing, and I never asked her what she did.
Our enemies had paused in the outer room. I could hear them whispering together.
Then Fal Sivas raised his voice and shouted to me.
"Come out of there and give yourself up," he screamed, "or we will come in and kill you."
I did not reply; I just stood there, waiting. Presently Zanda came close to me and whispered, "There is a door on the opposite side of this room, hidden behind a large screen. If you wait here, Fal Sivas will send men to that door; and they will attack you from in front and behind."
"I shall not wait, then," I said, moving toward the door leading into the outer room where I had heard my enemies whispering.
Zanda laid a hand upon my arm, "Just a moment, Vandor," she said. "You remain where you are, facing the door; and I will go to it and swing it open suddenly. Then they cannot take you by surprise, as they could if you were to open it."
The door was hinged so that it swung in, and thus Zanda would be protected as she drew it inward and stepped behind it.
Zanda stepped forward and grasped the handle while I stood directly in front of the door and a few paces from it, my long sword in my hand.
As she opened the door, a sword flashed inward in a terrific cut that would have split my skull had I been there.
The man who wielded the sword was Hamas. Just behind him, I saw Phystal and another armed man, while in the rear was Fal Sivas.
Now the old inventor commenced to scream at them and urge them on; but they held back, for only one man could pass through the doorway at a time; and none of them seemed to relish the idea of being the first. In fact, Hamas had leaped back immediately following his cut; and now his voice joined with that of Fal Sivas in exhorting the other two to enter the laboratory and destroy me.
"On, men!" cried Hamas. "We are three, and he is only one. Onward, you, Phystal! Kill the calot!"
"In with you, yourself, Hamas," growled Phystal.
"Go in! Go in and get him!" shrieked Fal Sivas. "Go in, you cowards." But no one came in; they just stood there, each urging the other to be first.
I did not relish this waste of time, and for two reasons. In the first place, I could not abide the thought of even a moment's unnecessary delay in starting out upon my quest for Dejah Thoris; and, secondly, there was always the danger that reinforcements might arrive. Therefore, if they would not come in to me, I would have to go out to them.
And I did go out to them, and so suddenly that it threw t
hem into confusion.
Hamas and Phystal, in their efforts to avoid me, fell back upon the man behind them. He was only a slave, but he was a brave man-the bravest of the four that faced me.
He pushed Phystal and Hamas roughly aside and sprang at me with his long sword.
Fal Sivas shouted encouragement to him.
"Kill him, Wolak!" he shrieked; "kill him and you shall have your freedom."
At that, Wolak rushed me determinedly. I was fighting for my life, but he was fighting for that and something even sweeter than life; and now Hamas and Phystal were creeping in on me-like two cowardly jackals, they hovered at the edge of the fight, waiting to rush in when they might do so without endangering themselves.
"Your weight in gold, Wolak, if you kill him," screamed Fal Sivas.
Freedom and wealth! Now, indeed, did my antagonist seem inspired. Life, liberty, and riches! What a princely reward for which to strive; but I, too, was fighting for a priceless treasure, for my incomparable Dejah Thoris.
The impetuosity of the man's attack had driven me back a couple of paces, so that I now stood at the doorway, which was really a most strategic position in that it prevented either Hamas or Phystal from attacking me from the side.
Just behind me stood Zanda, spurring me on with low words of encouragement; but though I appreciated them, I did not need them. I was already set to terminate the affair as quickly as possible.
The edge of a Martian long sword is just as keen as a razor, and the point needle-like in sharpness. It is a trick to preserve this keen edge during a combat, taking the blows of your adversary's weapon on the back of your blade; and I prided myself upon my ability to do this, saving the keen cutting edge for the purpose for which it is intended. I needed a sharp edge now, for I was preparing to execute a little trick that I had successfully used many times before.
My adversary was a good swordsman and exceptionally strong on defense; so that, in ordinary swordplay, he might have prolonged the duel for a considerable time.
For this, I had no mind. I wished to end it at once.
In preparation, I pushed him back; then I thrust at his face. He did the very thing that I knew he would do. He threw his head back, involuntarily, to avoid my point; and this brought his chin up exposing his throat. With my blade still extended, I cut quickly from right to left. The point of my sword moved but a few inches, but its keen edge opened his throat almost from ear to ear.
I shall never forget the look of horror in his eyes as he staggered back and crumpled to the floor.
Then I turned my attention to Hamas and Phystal.
Each of them wanted the other to have the honor of engaging me. As they retreated, they made futile passes at me with their points; and I was steadily pushing them into a corner when Fal Sivas took a hand in the affair.
Heretofore, he had contented himself with screaming shrill encouragement and commands to his men. Now he picked up a vase and hurled it at my head.
Just by chance, I saw it coming and dodged it; and it broke into a thousand fragments against the wall. Then he picked up something else and threw at me, and this time he hit my sword hand, and Phystal nearly got me then.
As I jumped back to avoid his thrust, Fal Sivas hurled another small object; and from the corner of my eye I saw Zanda catch it.
Neither Phystal nor Hamas was a good swordsman, and I could easily have overcome them in fair fight, but I could see that these new tactics of Fal Sivas were almost certain to prove my undoing. If I turned upon him, the others would be behind me; and how they would have taken advantage of such a God-given opportunity!
I tried to work them around so that they were between Fal Sivas and myself. In this way, they would shield me from his missiles, but that is something easier said than done when you are fighting two men in a comparatively small room.
I was terribly handicapped by the fact that I had to watch three men; and now, as I drove Hamas back with a cut, I cast a quick glance in the direction of Fal Sivas; and as I did so, I saw a missile strike him between the eyes. He fell to the floor like a log. Zanda had hoist him with his own petard.
I could not repress a smile as I turned my undivided attention upon Hamas and Phystal.
As I drove them into a corner, Hamas surprised me by throwing his sword aside and falling upon his knees.
"Spare me, spare me, Vandor!" he cried, "I did not want to attack you. Fal Sivas made me." And then Phystal cast his weapon to the floor; and he, too, went upon his marrow bones. It was the most revolting exhibition of cowardice that I had ever witnessed. I felt like running them through, but I did not want to foul my blade with their putrid blood.
"Kill them," counseled Zanda; "you cannot trust either of them."
I shook my head. "We cannot kill unarmed men in cold blood," I said.
"Unless you do, they will prevent our escape," she said, "even if we can escape. There are others who will stop us on the lower level."
"I have a better plan, Zanda," I said, and forthwith I bound Hamas and Phystal securely in their own harness and then did the same with Fal Sivas, for he was not dead but only stunned. I also gagged all three of them so that they could not cry out.
This done, I told Zanda to follow me and went at once to the hangar where the ship rested on her scaffolding.
"Why did you come here?" asked Zanda. "We ought to be getting out of the building as quickly as possible-you are going to take me with you, aren't you, Vandor?"
"Certainly I am," I said, "and we are going out of the building very shortly. Come, perhaps I shall need your help with these doors," and I led the way to the two great doors in the end of the hangar. They were well hung, however, and after being unlatched, slid easily to the sides of the opening.
Zanda stepped to the threshold and looked out. "We cannot escape this way," she said; "it is fifty feet to the ground, and there is no ladder or other means of descent."
"Nevertheless, we are going to escape through that doorway," I told her, amused at her mystification. "Just come with me, and you will see how."
We returned to the side of the ship, and I must say that I was far from being as assured of success as I tried to pretend, as I concentrated my thoughts upon the little metal sphere that held the mechanical brain in the nose of the craft.
I think my heart stopped beating as I waited, and then a great wave of relief surged through me as I saw the door open and the ladder lowering itself toward the floor.
Zanda looked on in wide-eyed amazement. "Who is in there?" she demanded.
"No one," I said. "Now up with you, and be quick about it. We have no time to loiter here."
She was evidently afraid, but she obeyed me like a good soldier, and I followed her up the ladder into the cabin. Then I directed the brain to hoist the ladder and close the door, as I went forward into the control room, followed by the girl.
Here I again focused my thoughts upon the mechanical brain just above my head.
Even with the demonstration that I had already had, I could not yet convince myself of the reality of what I was doing. It seemed impossible that that insensate thing could raise the craft from its scaffolding and guide it safely through the doorway, yet scarcely had I supplied that motivating thought when the ship rose a few feet and moved almost silently toward the aperture.
As we passed out into the still night, Zanda threw her arms about my neck. "Oh, Vandor, Vandor!" she cried, "you have saved me from the clutches of that horrible creature. I am free! I am free again!" she cried, hysterically. "Oh, Vandor, I am yours; I shall be your slave forever. Do with me whatever you will."
I could see that she was distraught and hysterical.
"You are excited, Zanda," I said, soothingly. "You owe me nothing. You are a free woman. You do not have to be my slave or the slave of any other."
"I want to be your slave, Vandor," she said, and then in a very low voice, "I love you."
Gently I disengaged her arms from about my neck. "You do not know what you are saying,
Zanda," I told her; "your gratitude has carried you away. You must not love me; my heart belongs to someone else, and there is another reason why you must not say that you love me-a reason that you will learn sooner or later, and then you will wish that you had been stricken dumb before you ever told me that you loved me."
I was thinking of her hatred of John Carter and her avowed desire to kill him.
"I do not know what you mean," she said; "but if you tell me not to love you, I will try to obey you, for no matter what you say, I am your slave. I owe my life to you, and I shall always be your slave."
"We will talk about that some other time," I said; "just now I have something to tell you that may make you wish that I had left you in the house of Fal Sivas."
She knitted her brows and looked at me questioningly. "Another mystery?" she asked. "Again you speak in riddles."
"We are going on a long and dangerous journey in this ship, Zanda. I am forced to take you with me because I cannot risk detection by landing you anywhere in Zodanga; and, of course, it would be signing your death warrant to set you down far beyond the walls of the city."
"I do not want to be set down in Zodanga or outside it," she replied. "Wherever you are going, I want to go with you. Some day you may need me, Vandor; and then you will be glad that I am along."
"Do you know where we are going, Zanda?" I asked.
"No," she said, "and I do not care. It would make no difference to me, even if you were going to Thuria."
I smiled at that, and turned my attention again to the mechanical brain, directing it to take us to the spot where Jat Or waited; and just then I heard the wailing signal of a patrol boat above us.
CHAPTER XIV. ON TO THURIA
Although I had realized the likelihood of our strange craft being discovered by a patrol boat, I had hoped that we might escape from the city without detection.
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