The city was perfectly rectangular, having a long axis of about twenty-five miles and a width of about sixteen. The avenues were perfectly straight and equidistant, one from the other, cutting the city into innumerable, identical square blocks. The buildings were all perfect rectangles, though not all of either the same size or height-the only break in the depressing monotony of this gloomy city.

Well, not the only break: there were open spaces where there were no buildings-perhaps plazas or parade grounds. But these I did not notice until we had dropped quite low above the city, as they were all paved with the same dark brown rock. The city was quite as depressing in appearance as is Salt Lake City from the air on an overcast February day. The only relief from this insistent sense of gloom was the rosy light which pervaded the scene, the reflection of the flames of the great volcanoes from the inner surface of the cloud envelope; this and the riotous growth of tropical verdure beyond the city's walls-weird, unearthly growths of weird unearthly hues.

Accompanied by the two patrol ships, we now dropped gently into a large open space near the center of the city, coming to rest close to a row of hangars in which were many craft similar to our own.

We were immediately surrounded by a detail of warriors; and, much to my surprise, I saw a number of human beings much like myself in appearance, except that their skins were purple. These were unarmed and quite naked except for G strings, having no harness such as is worn by the Morgors. As soon as we had disembarked, these people ran the ship into the hangar. They were slaves.

There were no interchanges of greetings between the returning Morgors and those who had come out to meet the ship. The two commanding officers saluted one another and exchanged a few routine military brevities. The commander of our ship gave his name, which was Haglion, the name of his ship, and stated that he was returning from Mars-he called it Garobus. Then he detailed ten of his own men to accompany him as guards for U Dan and me. They surrounded us, and we walked from the landing field in the wake of Haglion.

He led us along a broad avenue filled with pedestrian and other traffic. On the sidewalks there were only Morgors. The purple people walked in the gutters. Many Morgors were mounted on enormous, repulsive looking creatures with an infinite number of legs. They reminded me of huge centipedes, their bodies being jointed similarly, each joint being about eighteen inches long. Their heads were piscine and extremely ugly. Their jaws were equipped with many long, sharp teeth. Like nearly all the land animals of Jupiter, as I was to learn later, they were ungulate, hoofs evidently being rendered necessary by the considerable areas of hardened lava on the surface of the planet, as well as by the bits of lava rock which permeate the soil.

These creatures were sometimes of great length, seating as high as ten or twelve Morgors on their backs. There were other beasts of burden on the avenue. They were of strange, unearthly forms; but I shall not bore you by describing them here.

Above this traffic moved small fliers in both directions. Thus the avenue accommodated a multitude of people, strange, dour people who seldom spoke and, as far as I had seen, never laughed. They might have, as indeed they looked, risen from sad graves to rattle their bones in mock life in a cemetery city of the dead.

U Dan and I walked in the gutter, a guard on the sidewalk close beside each of us. We were not good enough to walk where the Morgors walked! Haglion led us to a large plaza surrounded by buildings of considerable size but of no beauty. A few of them boasted towers-some squat some tall, all ugly. They looked as though they had been built to endure throughout the ages.

We were conducted to one of these buildings, before the entrance to which a single sentry stood. Haglion spoke to him, and he summoned an officer from the interior of the building, after which we all entered. Our names and a description of each of us were entered in a large book. Haglion was given a receipt for us, after which he and our original escort left.

Our new custodian issued instructions to several warriors who were in the room, and they hustled U Dan and me down a spiral stairway to a dim basement, where we were thrown into a gloomy cell. Our escort locked the door on us and departed.

Although I had often wondered about Jupiter, I had never hoped nor cared to visit it because of the inhospitable conditions which earthly scientists assure us pertain to this great planet. However, here I was, and conditions were not at all as the scientists had described. Unquestionably, the mass of Jupiter is far greater than that of earth or Mars, yet I felt the gravitational pull far less than I had upon earth. It was even less than that which I had experienced upon Mars. This was due, I realized, to the rapid revolution of the planet upon its axis. Centrifugal force, tending to throw me off into space, more than outweighed the increased force of gravitation. I had never before felt so light upon my feet. I was intrigued by contemplation of the height and distances to which I might Jump.

The cell in which I found myself, while large, precluded any experiments along that line. It was a large room of bard, brown lava rock. A few white lights set in recesses in the ceiling gave meager illumination. From the center of one wall a little stream of water tinkled into a small cavity in the floor, the overflow being carried off by a gutter through a small hole in the end wall of the cell. There were some grass mats on the floor. These constituted the sole furnishings of the bleak prison.

"The Morgors are thoughtful hosts," I remarked to U Dan. "They furnish water for drinking and bathing. They have installed sewage facilities. They have given us whereon to lie or sit. Our cell is lighted. It is strong. We are secure against the attacks of our enemies. However, as far as the Morgors are concerned, I…"

"S-s-sh!" cautioned U Dan. "We are not alone." He nodded toward the far end of the cell. I looked, and for the first time perceived what appeared to be the figure of a man stretched upon a mat.

Simultaneously, it arose and came toward us. It was, indeed, a man. "You need have no fear of me," he said. "Say what you please of the Morgors. You could not possibly conceive any terms of opprobrium in which to describe them more virulent than those which I have long used and considered inadequate."

Except that the man's skin was a light blue, I could not see that he differed materially in physical appearance from U Dan and myself. His body, which was almost naked, was quite hairless except for a heavy growth on his head and for eye-brows and eyelashes. He spoke the same language as the Morgors. U Dan and I had been conversing in the universal language of Barsoom. I was surprised that the man had been able to understand us. U Dan and I were both silent for a moment.

"Perhaps," suggested our cell mate, "you do not understand the language of Eurobus-eh?"

"We do," I said, "but we were surprised that you understood our language."

The fellow laughed. "I did not," he said. "You mentioned the Morgors, so I knew that you were speaking of them; and then, when your companion discovered me, he warned you to silence; so I guessed that you were saying something uncomplimentary about our captors. Tell me, who are you? You are no Morgors, nor do you look like us Savators."

"We are from Barsoom," I said.

"The Morgors call it Garobus," explained U Dan. "I have heard of it," said the Savator. "It is a world that lies far above the clouds. The Morgors are going to invade it. I suppose they have captured you either to obtain information from you or to hold you as hostages."