by Unknown
"Exactly, and the field of gravity of the earth is so great compared to the gravity of a man that when he stands on his head, his polarity is instantly reversed."
I nodded. His explanation was too logical for me to pick a flaw in it.
"If that same bar magnet were held in the field of the electromagnet with its north pole pointed toward the magnet and then, by the action of some outside force of sufficient power, its polarity were reversed, the bar would be repelled. If the magnetism were neutralized and held exactly neutral, it would be neither repelled nor attracted, but would act only as the force of gravity impelled it. Is that clear?"
"Perfectly," I assented.
"That, then, paves the way for what I have to tell you. I have developed an electrical method of neutralizing the gravity of a body while it is within the field of the earth, and also, by a slight extension, a method of entirely reversing its polarity."
* * * * *
I nodded calmly.
"Do you realize what this means?" he cried.
"No," I replied, puzzled by his great excitement.
"Man alive," he cried, "it means that the problem of aerial flight is entirely revolutionized, and that the era of interplanetary travel is at hand! Suppose that I construct an airship and then render it neutral to gravity. It would weigh nothing, absolutely nothing! The tiniest propeller would drive it at almost incalculable speed with a minimum consumption of power, for the only resistance to its motion would be the resistance of the air. If I were to reverse the polarity, it would be repelled from the earth with the same force with which it is now attracted, and it would rise with the same acceleration as a body falls toward the earth. It would travel to the moon in two hours and forty minutes."
"Air resistance would--"
"There is no air a few miles from the earth. Of course, I do not mean that such a craft would take off from the earth and land on the moon three hours later. There are two things which would interfere with that. One is the fact that the propelling force, the gravity of the earth, would diminish as the square of the distance from the center of the earth, and the other is that when the band of neutral attraction, or rather repulsion, between the earth and the moon had been reached, it would be necessary to decelerate so as to avoid a smash on landing. I have been over the whole thing and I find that it would take twenty-nine hours and fifty-two minutes to make the whole trip. The entire thing is perfectly possible. In fact, I have asked you here to witness and report the first interplanetary trip to be made."
"Have you constructed such a device?" I cried.
"My space ship is finished and ready for your inspection," he replied. "If you will come with me, I will show it to you."
* * * * *
Hardly knowing what to believe, I followed him from the house and to a huge barnlike structure, over a hundred feet high, which stood nearby. He opened the door and switched on a light, and there before me stood what looked at first glance to be a huge artillery shell, but of a size larger than any ever made. It was constructed of sheet steel, and while the lower part was solid, the upper sections had huge glass windows set in them. On the point was a mushroom shaped protuberance. It measured perhaps fifty feet in diameter and was one hundred and forty feet high, the Doctor informed me. A ladder led from the floor to a door about fifty feet from the ground.
I followed the Doctor up the ladder and into the space flier. The door led us into a comfortable living room through a double door arrangement.
"The whole hull beneath us," explained the Doctor, "is filled with batteries and machinery except for a space in the center, where a shaft leads to a glass window in the bottom so that I can see behind me, so to speak. The space above is filled with storerooms and the air purifying apparatus. On this level is my bedroom, kitchen, and other living rooms, together with a laboratory and an observatory. There is a central control room located on an upper level, but it need seldom be entered, for the craft can be controlled by a system of relays from this room or from any other room in the ship. I suppose that you are more or less familiar with imaginative stories of interplanetary travel?"
* * * * *
I nodded an assent.
"In that case there is no use in going over the details of the air purifying and such matters," he said. "The story writers have worked out all that sort of thing in great detail, and there is nothing novel in my arrangements. I carry food and water for six months and air enough for two months by constant renovating. Have you any question you wish to ask?"
"One objection I have seen frequently raised to the idea of interplanetary travel is that the human body could not stand the rapid acceleration which would be necessary to attain speed enough to ever get anywhere. How do you overcome this?"
"My dear boy, who knows what the human body can stand? When the locomotive was first invented learned scientists predicted that the limit of speed was thirty miles an hour, as the human body could not stand a higher speed. To-day the human body stands a speed of three hundred and sixty miles an hour without ill effects. At any rate, on my first trip I intend to take no chances. We know that the body can stand an acceleration of thirty-two feet per second without trouble. That is the rate of acceleration due to gravity and is the rate at which a body increases speed when it falls. This is the acceleration which I will use.
"Remember that the space traveled by a falling body in a vacuum is equal to one half the acceleration multiplied by the square of the elapsed time. The moon, to which I intend to make my first trip, is only 280,000 miles, or 1,478,400,000 feet, from us. With an acceleration of thirty-two feet per second, I would pass the moon two hours and forty minutes after leaving the earth. If I later take another trip, say to Mars, I will have to find a means of increasing my acceleration, possibly by the use of the rocket principle. Then will be time enough to worry about what my body will stand."
A short calculation verified the figures the Doctor had given me, and I stood convinced.
"Are you really going?" I asked.
"Most decidedly. To repeat, I would have started yesterday, had you arrived. As it is, I am ready to start at once. We will go back to the house for a few minutes while I show you the location of an excellent telescope through which you may watch my progress, and instruct you in the use of an ultra-short-wave receiver which I am confident will pierce the heaviest layer. With this I will keep in communication with you, although I have made no arrangements for you to send messages to me on this trip. I intend to go to the moon and land. I will take atmosphere samples through an air port and, if there is an atmosphere which will support life, I will step out on the surface. If there is not, I will return to the earth."
* * * * *
A few minutes was enough for me to grasp the simple manipulations which I would have to perform, and I followed him again to the space flier.
"How are you going to get it out?" I asked.
"Watch," he said.
He worked some levers and the roof of the barn folded back, leaving the way clear for the departure of the huge projectile. I followed him inside and he climbed the ladder.
"When I shut the door, go back to the house and test the radio," he directed.
The door clanged shut and I hastened into the house. His voice came plainly enough. I went back to the flier and waved him a final farewell, which he acknowledged through a window; then I returned to the receiver. A loud hum filled the air, and suddenly the projectile rose and flew out through the open roof, gaining speed rapidly until it was a mere speck in the sky. It vanished. I had no trouble in picking him up with the telescope. In fact, I could see the Doctor through one of the windows.
"I have passed beyond the range of the atmosphere, Tom," came his voice over the receiver, "and I find that everything is going exactly as it should. I feel no discomfort, and my only regret is that I did not install a transmitter in the house so that you could talk to me; but there is no real necessity for it. I am going to make some observations now, but I will call you again with
a report of progress in half-an-hour."
* * * * *
For the rest of the afternoon and all of that night I received his messages regularly, but with the coming of daylight they began to fade. By nine o'clock I could get only a word here and there. By noon I could hear nothing. I went to sleep hoping that the night would bring better reception, nor was I disappointed. About eight o'clock I received a message, rather faintly, but none the less distinctly.
"I regret more than ever that I did not install a transmitter so that I could learn from you whether you are receiving my messages," his voice said faintly. "I have no idea of whether you can hear me or not, but I will keep on repeating this message every hour while my battery holds out. It is now thirty hours since I left the earth and I should be on the moon, according to my calculations. But I am not, and never will be. I am caught at the neutral point where the gravity of the earth and the moon are exactly equal.
"I had relied on my momentum to carry me over this point. Once over it, I expected to reverse my polarity and fall on the moon. My momentum did not do so. If I keep my polarity as it was when left the earth, both the earth and the moon repel me. If I reverse it, they both attract me, and again I cannot move. If I had equipped my space flier with a rocket so that I could move a few miles, or even a few feet, from the dead line, I could proceed, but I did not do so, and I cannot move forward or back. Apparently I am doomed to stay here until my air gives out. Then my body, entombed in my space ship, will endlessly circle the earth as a satellite until the end of time. There is no hope for me, for long before a duplicate of my device equipped with rockets could be constructed and come to my rescue, my air would be exhausted. Good-by, Tom. You may write your story as soon as you wish. I will repeat my message in one hour. Good-by!"
At nine and at ten o'clock the message was repeated. At eleven it started again but after a few sentences the sound suddenly ceased and the receiver went dead. I thought that the fault was with the receiver and I toiled feverishly the rest of the night, but without result. I learned later that the messages heard all over the world ceased at the same hour.
The next morning Professor Montescue announced his discovery of the world's new satellite.
The Beetle Horde
By Victor Rousseau
Bullets, shrapnel, shell--nothing can stop the trillions of famished, man-sized beetles which, led by a madman, sweep down over the human race.
CONCLUSION
Tommy Travers and James Dodd, of the Travers Antarctic Expedition, crash in their plane somewhere near the South Pole, and are seized by a swarm of man-sized beetles. They are carried down to Submundia, a world under the earth's crust, where the beetles have developed their civilization to an amazing point, using a wretched race of degenerated humans, whom they breed as cattle, for food.
The insect horde is ruled by a human from the outside world--a drug-doped madman. Dodd recognizes this man as Bram, the archaeologist who had been lost years before at the Pole and given up for dead by a world he had hated because it refused to accept his radical scientific theories. His fiendish mind now plans the horrible revenge of leading his unconquerable horde of monster insects forth to ravage the world, destroy the human race and establish a new era--the era of the insect.
The world has to be warned of the impending doom. The two, with Haidia, a girl of Submundia, escape, and pass through menacing dangers to within two miles of the exit. There, suddenly, Tommy sees towering over him a creature that turns his blood cold--a gigantic praying mantis. Before he has time to act, the monster springs at them!
CHAPTER VII - Through the Inferno
Fortunately, the monster miscalculated its leap. The huge legs, whirling through the air, came within a few inches of Tommy's head, but passed over him, and the mantis plunged into the stream. Instantly the water was alive with leaping things with faces of such grotesque horror that Tommy sat paralyzed in his rocking shell, unable to avert his eyes.
Things no more than a foot or two in length, to judge from the slender, eel-like bodies that leaped into the air, but things with catfish heads and tentacles, and eyes waving on stalks; things with clawlike appendages to their ventral fins, and mouths that widened to fearful size, so that the whole head seemed to disappear above them, disclosing fangs like wolves'. Instantly the water was churned into phosphorescent fire as they precipitated themselves upon the struggling mantis, whose enormous form, extending halfway from shore to shore, was covered with the river monsters, gnawing, rending, tearing.
Luckily the struggles of the dying monster carried it downstream instead of up. In a few moments the immediate danger was past. And suddenly Haidia awoke, sat up.
"Where are we?" she cried. "Oh, I can see! I can see! Something has burned away from my eyes! I know this place. A wise man of my people once came here, and returned to tell of it. We must go on. Soon we shall be safe on the wide river. But there is another way that leads to here. We must go on! We must go on!"
Even as she spoke they heard the distant rasping of the beetle-legs. And before the shells were well in mid-current they saw the beetle horde coming round the bend; in the front of them Bram, reclining on his shell couch, and drawn by the eight trained beetles.
* * * * *
Bram saw the fugitives, and a roar of ironic mirth broke from his lips, resounding high above the strident rasping of the beetle-legs, and roaring over the marshes.
"I've got you, Dodd and Travers," he bellowed, as the trained beetles hovered above the shell canoes. "You thought you were clever, but you're at my mercy. Now's your last chance, Dodd. I'll save you still if you'll submit to me, if you'll admit that there were fossil monotremes before the pleistocene epoch. Come, it's so simple! Say it after me: 'The marsupial lion--'"
"You go to hell!" yelled Dodd, nearly upsetting his shell as he shook his fist at his enemy.
High above the rasping sound came Dodd's shrill whistle. Just audible to human ears, though probably sounding like the roar of thunder to those of the beetles, there was no need to wonder what it was.
It was the call to slaughter.
Like a black cloud the beetles shot forward. A serried phalanx covered the two men and the girl, hovering a few feet overhead, the long legs dangling to within arm's reach. And a terrible cry of fear broke from Haidia's lips.
Suddenly Tommy remembered Bram's cigarette-lighter. He pulled it from his pocket and ignited it.
Small as the flame was, it was actinically much more powerful than the brighter phosphorescence of the fungi behind them. The beetle-cloud overhead parted. The strident sound was broken into a confused buzzing as the terrified, blinded beetles plopped into the stream.
None of them, fortunately, fell into either of the three shells, but the mass of struggling monsters in the water was hardly less formidable to the safety of the occupants than that menacing cloud overhead.
"Get clear!" Tommy yelled to Dodd, trying to help the shell along with his hands.
* * * * *
He heard Bram's cry of baffled rage, and, looking backward, could not refrain from a laugh of triumph. Bram's trained steeds had taken fright and overset him. Bram had fallen into the red mud beside the stream, from which he was struggling up, plastered from head to feet, and shaking his fists and evidently cursing, though his words could not be heard.
"How about your marsupial lion now, Bram?" yelled Dodd. "No monotremes before the pleistocene! D'you get that? That's my slogan now and for ever more!"
Bram shrieked and raved, and seemed to be inciting the beetles to a renewed assault. The air was still thick with them, but Tommy was waving the cigarette-lighter in a flaming arc, which cleared the way for them.
Then suddenly came disaster. The flame went out! Tommy closed the lighter with a snap and opened it. In vain. In his excitement he must have spilled all the contents, for it would not catch.
Bram saw and yelled derision. The beetle-cloud was thickening. Tommy, now abreast of his companions on the widening stream, saw the immine
nt end.
* * * * *
And then once more fate intervened. For, leaping through the air out of the places where they had lain concealed, six mantises launched themselves at their beetle prey.
Those awful bounds of the long-legged monsters, the scourges of the insect world, carried them clear from one bank to the other--fortunately for the occupants of the shells. In an instant the beetle-cloud dissolved. And it had all happened in a few seconds. Before Dodd or Tommy had quite taken in the situation, the mantises, each carrying a victim in its grooved legs, had vanished like the beetles. There was no sign of Bram. The three were alone upon the face of the stream, which went swirling upward into renewed darkness.
Tommy saw Dodd bend toward Haidia as she lay on her shell couch. He heard the sound of a noisy kiss. And he lay back in the hollow of his shell, with the feeling that nothing that could happen in the future could be worse than what they had passed through.
* * * * *
Days went by, days when the sense of dawning freedom filled their hearts with hope. Haidia told Dodd and Tommy that, according to the legends of her people, the river ran into the world from which they had been driven by the floods, ages before.
There had been no further signs of Bram or the beetle horde, and Dodd and Tommy surmised that it had been disorganized by the attack of the mantises, and that Bram was engaged in regaining his control over it. But neither of them believed that the respite would be a long one, and for that reason they rested ashore only for the briefest intervals, just long enough to snatch a little sleep, and to eat some of the shrimps that Haidia was adept at finding--or to pull some juicy fruit surreptitiously from a tree.
Incidents there were, nevertheless, during those days. For hours their shells were followed by a school of the luminous river monsters, which, nevertheless, made no attempt to attack them. And once, hearing a cry from Haidia, as she was gathering shrimps, Dodd ran forward to see her battling furiously with a luminous scorpion, eight feet in length, that had sprung at her from its lurking place behind a pear shrub.
