"And no creature of a lower order may strike a Morgor without suffering the consequences," he replied.

"What are you going to do about it?" I asked.

"I am going to do nothing about it," he replied. "My orders require me to bring you alive to Eurobus. When I have done that and reported your behavior, it will lie wholly within the discretion of Bandolian as to what your punishment shall be."

Then he walked away, but food was brought me and I was allowed to sleep; nor did another Morgor strike me during the remainder of the voyage.

While I was eating, I asked U Dan what Eurobus was.

"It is their name for the planet Sasoom," he replied.

"And who is Bandolian?"

"Well, I suppose he would be called a jeddak on Barsoom. I judge this from the numerous references I have heard them make concerning him. Anyhow, he seems to be an object of fear if not veneration."

After a long sleep, I was much refreshed. Everything that I had been taught was clear again in my mind, no longer dulled by exhaustion. It was then that the commander took it upon himself to examine me personally. I am quite sure that he did so for the sole purpose of finding fault with me and perhaps punishing me. He was extremely nasty and arrogant. His simplest questions were at first couched in sarcastic language; but finally, evidently disappointed, he left me. I was given no more instruction.

"You have done well," said U Dan. "You have, in a very short time, mastered their language well enough to suit them."

This was the fifteenth day. During the last three days they left me alone. Travelling through space is stupifyingly monotonous. I had scarcely glanced from the portholes for days. This was, however, principally because my time was constantly devoted to instruction; but now, with nothing else to do, I glanced out. A most gorgeous scene presented itself to my astonished eyes. Gorgeous Jupiter loomed before me in all his majestic immensity. Five of his planets were plainly visible in the heavens. I could even see the tiny one closest to him, which is only thirty miles in diameter. During the ensuing two days, I saw, or at least I thought I saw, all of the remaining five moons. And Jupiter grew larger and more imposing. We were approaching him at the very considerable speed of twenty-three miles per second, but were still some two million miles distant.

Freed from the monotony of language lessons, my mind was once more enslaved to my curiosity. How could life exist upon a planet which one school of scientific thought claimed to have a surface temperature of two hundred and sixty degrees below zero and which another school was equally positive was still in a half molten condition and so hot that gases rose as hot vapor into its thick, warm atmosphere to fall as incessant rain? How could human life exist in an atmosphere made up largely of ammonia and methane gases? And what of the effect of the planet's terrific gravitational pull? Would my legs be able to support my weight? If I fell down, would I be able to rise again?

Another question which presented itself to my mind, related to the motive power which had been carrying us through space at terrific speeds for seventeen days. I asked U Dan if he knew.

They utilize the Eighth Barsoomian Ray, what we know as the ray of propulsion, in combination with the highly concentrated gravitational forces of all celestial bodies within the range of whose attraction the ship passes, and a concentration of Ray L (cosmic rays) which are collected from space and discharged at high velocities from propulsion tubes at the ship's stern. The eighth Barsoomian Ray helps to give the ship initial velocity upon leaving a planet and as a brake to its terrific speed when approaching its landing upon another.

Gravitational forces are utilized both to accelerate speed and to guide the ship. The secret of their success with these interplanetary ships lies in the ingenious methods they have developed for concentrating these various forces and directing their tremendous energies.

"Thanks, U Dan," I said, "I think I grasp the general idea. It would certainly surprise some of my scientific friends on earth."

My passing reference to scientists started me to thinking of the vast accumulation of theories I was about to see shattered when I landed on Jupiter within the next twenty-four hours. It certainly must be habitable for a race quite similar to our own. These people had lungs, a heart, kidneys, a liver, and other internal organs similar to our own. I knew this for a fact, as I could see them every time one of the Morgors stood between me and a bright light, so thin and transparent Was the parchmentlike skin that stretched tightly over their frames. Once more the scientists would be wrong. I felt sorry for them. They have been wrong so many times and had to eat humble pie. There were those scientists, for instance, who clung to the Ptolemaic System of the universe; and who, after Galileo had discovered four of the moons of Jupiter in 1610, argued that such pretended discoveries were absurd, their argument being that since we have seven openings in the head-two ears, two eyes, two nostrils, and a mouth, there could be in the heavens but seven planets. Having dismissed Galileo's absurd pretensions in this scientific manner, they caused him to be thrown into jail.

When at a distance of about five hundred thousand miles from Jupiter, the ship began to slow down very gradually in preparation for a landing; and some three or four hours later we entered the thick cloud envelope which surrounds the planet. We were barely crawling along now at not more than six hundred miles an hour.

I was all eagerness to see the surface of Jupiter; and extremely impatient of the time that it took the ship to traverse the envelope, in which we could see absolutely nothing.

At last we broke through, and what a sight was revealed to my astonished eyes! A great world lay below me, illuminated by a weird red light which seemed to emanate from the inner surface of the cloud envelope, shedding a rosy glow over mountain, hill, dale, plain, and ocean. At first I could in no way account for this all-pervading illumination; but presently, my eyes roving over the magnificent panorama lying below me, I saw in the distance an enormous volcano, from which giant flames billowed upward thousands of feet into the air. As I was to learn later, the crater of this giant was a full hundred miles in diameter and along the planet's equator there stretched a chain of these Gargantuan torches for some thirty thousand miles, while others were dotted over the entire surface of the globe, giving both, light and heat to a world that would have been dark and cold without them.

As we dropped lower, I saw what appeared to be cities, all located at a respectful distance from these craters. In the air, I saw several ships similar to that which had brought me from Mars. Some were very small; others were much larger than the one with which I had become so familiar. Two small ships approached us, and we slowed down almost to a stop. They were evidently patrol ships. From several ports guns were trained on us. One of the ships lay at a little distance; the other came alongside. Our commander raised a hatch in the upper surface of the ship above the control room and stuck his head out. A door in the side of the patrol ship opened, and an officer appeared. The two exchanged a few words; then the commander of the patrol ship saluted and closed the door in which he had appeared. We were free to proceed. All this had taken place at an altitude of some five thousand feet.

We now spiraled down slowly toward a large city. Later, I learned that it covered an area of about four hundred square miles. It was entirely walled, and the walls and buildings were of a uniform dark brown color, as were the pavements of the avenues. It was a dismal, repellent city built entirely of volcanic rock. Within its boundaries I could see no sign of vegetation-not a patch of sward, not a shrub, not a tree; no color to relieve the monotony of somber brown.