Astounding Stories of Super-Science, March 1930 by Various (the lemonade war series TXT) 📗

you are going to get in on it.” 298

Silently Carnes and Dr. Bird surveyed the wreck of the T. A. C. plane. The observations of the secret service operative had been correct. The bodies of the unfortunate crew had been broken into fragments. Their limbs had not been twisted off as a freak of the fall but had been cleanly broken off, as though the bodies had suddenly become brittle and had shattered on their impact with the ground. Not only the bodies, but the ship itself had been broken up. Even the clothing of the men was in pieces or had long splits in the fabric whose edges were as clean as though they had been cut with a knife.

Dr. Bird picked up an arm which had belonged to the pilot and examined it. The brittleness, if it had ever existed, was gone and the arm was limp.

“No rigor mortis,” commented the Doctor. “How long ago was the wreck?”

“About seventy-two hours ago.”

“Hm-m! What about those packets that were on the plane?”

Carnes stepped forward and gingerly inspected first the body of the army courier and then that of the courier of the T. A. C.

“Both gone, Doctor,” he reported, straightening up.

Dr. Bird’s face fell into grim lines.

“There is more to this case than appears on the surface, Carnes,” he said. “This was no ordinary wreck. Bring up that third burro; I want to examine these fragments a little. Bill,” he went on to one of the two guides who had accompanied them from Fallon, “you and Walter scout around the ground and see what you can find out. I especially wish to know whether anyone has visited the scene of the wreck.”

The guides consulted a moment and started out. Carnes drove up the burro the Doctor had indicated and Dr. Bird unpacked it. He opened a mahogony case and took from it a high powered microscope. Setting the instrument up on a convenient rock, he subjected portions of the wreck, including several fragments of flesh, to a careful scrutiny. When he had completed his observations he fell into a brown study, from which he was aroused by Carnes.

“What did you find out about the cause of the wreck, Doctor?”

“I don’t know what to think. The immediate cause was that everything was frozen. The plane ran into a belt of cold which froze up the motor and which probably killed the crew instantly. It was undoubtedly the aftermath of that cold which you felt when you swooped down over the wreck.”

“It seems impossible that it could have suddenly got cold enough to freeze everything up like that.”

“It does, and yet I am confident that that is what happened. It was no ordinary cold, Carnes; it was cold of the type that infests interstellar space; cold beyond any conception you have of cold, cold near the range of the absolute zero of temperature, nearly four hundred and fifty degrees below zero on the Fahrenheit scale. At such temperatures, things which are ordinarily quite flexible and elastic, such as rubber, or flesh, become as brittle as glass and would break in the manner which these bodies have broken. An examination of the tissues of the flesh shows that it has been submitted to some temperature that is very low in the scale, probably below that of liquid air. Such a temperature would produce instant death and the other phenomena which we can observe.”

“What could cause such a low temperature, Doctor?”

“I don’t know yet, although I hope to find out before we are finished. Cold is a funny thing, Carnes. Ordinarily it is considered as simply the absence of heat; and yet I have always held it to be a definite negative quantity. All through nature we observe that every force has its opposite or negative force to oppose it. We have positive and negative electrical charges, positive and negative, or north and south, magnetic poles. We have gravity and its 299 opposite apergy, and I believe cold is really negative heat.”

“I never heard of anything like that, Doctor. I always thought that things were cold because heat was taken from them––not because cold was added. It sounds preposterous.”

“Such is the common idea, and yet I cannot accept it, for it does not explain all the recorded phenomena. You are familiar with a searchlight, are you not?”

“In a general way, yes.”

“A searchlight is merely a source of light, and of course, of heat, which is placed at the focus of a parabolic reflector so that all of the rays emanating from the source travel in parallel lines. A searchlight, of course, gives off heat. If we place a lens of the same size as the searchlight aperture in the path of the beam and concentrate all the light, and heat, at one spot, the focal point of the lens, the temperature at that point is the same as the temperature of the source of the light, less what has been lost by radiation. You understand that, do you not?”

“Certainly.”

“Suppose that we place at the center of the aperture of the searchlight a small opaque disc which is permeable neither to heat nor light, in such a manner as to interrupt the central portion of the beam. As a result, the beam will go out in the form of a hollow rod, or pipe, of heat and light with a dark, cold core. This core will have the temperature of the surrounding air plus the small amount which has radiated into it from the surrounding pipe. If we now pass this beam of light through a lens in order to concentrate the beam, both the pipe of heat and the cold core will focus. If we place a temperature measuring device near the focus of the dark core, we will find that the temperature is lower than the surrounding air. This means that we have focused or concentrated cold.”

“That sounds impossible. But I can offer no other criticism.”

“Nevertheless, it is experimentally true. It is one of the facts which lead me to consider cold as negative heat. However, this is true of cold, as it is of the other negative forces; they exist and manifest themselves only in the presence of the positive forces. No one has yet concentrated cold except in the presence of heat, as I have outlined. How this cold belt which the T. A. C. plane encountered came to be there is another question. The thing which we have to determine is whether it was caused by natural or artificial forces.”

“Both of the packets which the plane carried are gone, Doctor,” observed Carnes.

“Yes, and that seems to add weight to the possibility that the cause was artificial, but it is far from conclusive. The packets might not have been on the men when the plane fell, or someone may have passed later and taken them for safekeeping.”

The doctor’s remarks were interrupted by the guides.

“Someone has been here since the wreck, Doctor,” said Bill. “Walter and I found tracks where two men came up here and prowled around for some time and then left by the way they came. They went off toward the northwest, and we followed their trail for about forty rods and then lost it. We weren’t able to pick it up again.”

“Thanks, Bill,” replied the doctor. “Well, Carnes, that seems to add more weight to the theory that the spot of cold was made and didn’t just happen. If a prospecting party had just happened along they would either have left the wreck alone or would have made some attempt to inter the bodies. That cold belt must have been produced artificially by men who planned to rob this plane after bringing it down and who were near at hand to get their plunder. Is there any chance of following that trail?”

“I doubt it, Doc. Walter and I scouted around quite a little, but we couldn’t pick it up again.”

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“Is there any power line passing within twenty miles of here?”

“None that Walter and I know of, Doc.”

“Funny! Such a device as must have been used would need power and lots of it for operation. Well, I’ll try my luck. Carnes, help me unpack and set up the rest of my apparatus.”

With the aid of the operative, Dr. Bird unpacked two of the burros and extracted from cases where they were carefully packed and padded some elaborate electrical and optical apparatus. The first was a short telescope of large diameter which he mounted on a base in such a manner that it could be elevated or depressed and rotated in any direction. At the focal point of the telescope was fastened a small knot of wire from which one lead ran to the main piece of apparatus, which he sat on a flat rock. The other lead from the wire knot ran into a sealed container surrounded by a water bath under which a spirit lamp burned. From the container another lead led to the main apparatus. This main piece consisted of a series of wire coils mounted on a frame and attached to the two leads. The doctor took from a padded case a tiny magnet suspended on a piece of wire of exceedingly small diameter which he fastened in place inside the coils. Cemented to the magnet was a tiny mirror.

“What is that apparatus?” asked Carnes as the doctor finished his set-up and surveyed it with satisfaction.

“Merely a thermocouple attached to a D’Arsonval galvanometer,” replied the doctor. “This large, squat telescope catches and concentrates on the thermocouple and the galvanometer registers the temperature.”

“You’re out of my depth. What is a thermocouple?”

“A juncture of two wires made of dissimilar metals, in this case of platinum and of platinum-iridium alloy. There is another similar junction in this case, which is kept at a constant temperature by the water bath. When the temperatures of the two junctions are the same, the system is in equilibrium. When they are at different temperatures, an electrical potential is set up, which causes a current to flow from one to the other through the galvanometer. The galvanometer consists of a magnet set up inside coils through which the current I spoke of flows. This current causes the magnet to rotate and by watching the mirror, the rotation can be detected and measured.

“This device is one of the most sensitive ever made, and is used to measure the radiation from distant stars. Currents as small as .000000000000000000000000001 ampere have been detected and measured. This particular instrument is not that sensitive to begin with, and has its sensitivity further reduced by having a high resistance in one of the leads.”

“What are you going to use it for?”

“I am going to try to locate somewhere in these hills a patch of local cold. It may not work, but I have hopes. If you will manipulate the telescope so as to search the hills around here, I will watch the galvanometer.”

For several minutes Carnes swung the telescope around. Twice Dr. Bird stopped him and decreased the sensitiveness of his instrument by introducing more resistance in the lines in order to keep the magnet from twisting clear around, due to the fluctuations in the heats received on account of the varying conditions of reflection. As Carnes swung the telescope again the magnet swung around sharply, nearly to a right angle to its former position.

“Stop!” cried the doctor. “Read your azimuth.”

Carnes read the compass bearing on the protractor attached to the frame which supported the telescope. Dr. Bird took a pair of binoculars and looked long and earnestly in the indicated direction. With a sigh he laid down the glasses.

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“I can’t see a thing, Carnesy,” he said. “We’ll have to move over to the next crest and make a new set-up. Plant a rod on the hill so that we can get an azimuth bearing and get the airline distance with a range finder.”

On the hilltop which Dr. Bird had pointed out the apparatus was again set up. For several minutes Carnes swept the hills before an exclamation from the doctor told him to pause. He read the new azimuth, and the doctor laid off the two readings on a sheet of paper with a protractor and made a few calculations.

“I don’t know,” he said reflectively when he had finished his computations. “This darned instrument is still so sensitive that you may have merely focused on a deep shadow or a cold spring or something of that sort, but the magnet kicked clear around and it may mean that we have located what we are looking for. It should be about two miles away and almost due west of here.”

“There is no spring that I know of, Doc, and I think I know of every water hole in this country,” remarked Bill.

“There could hardly be a spring at this elevation, anyway,” replied the doctor. “Maybe it is what we are seeking. We’ll start out in that direction, anyway. Bill, you had better take the lead, for you know the country. Spread out a little so that we won’t be too bunched if anything happens.”

For three-quarters of an hour the little group of men made their way through the wilderness in the direction indicated by the doctor. Presently Bill, who was in the lead, held up his hand with a warning gesture. The other three closed up as rapidly as cautious progress would allow.

“What is it, Bill?” asked the doctor in an undertone.

“Slip up ahead and look over that crest.”

The doctor obeyed instructions. As he glanced over he gave vent to a low whistle of surprise and motioned for Carnes