Part 2

"It was finally agreed by the ship's officers to report the event as the loss of two sailors, swept overboard by a sudden gale. It went down in the ship's log, thus, and we sailed on. But the crew was fearful, whispering....

"The ship came safe to Galveston, though. The wages due me as a seaman were enough to get me to New York. I came at once to your apartment, and the rest you know.

"What is that thing that seized me, that enigmatic Raider through time? God alone knows, if even He is aware of its existence. But I know that it swept down on me through time and seized me, that it flashed with me through those three years in almost as few minutes. And I know that it has marked me for its victim and will come for me again, maybe in pure revenge for that shot of mine that released me.

"Where is there refuge from a thing like that, that can speed through time and space at will? Twice I have escaped it, but I fear I can not escape it again, when it comes to claim me. And sooner or later, it will come!"

_CHAPTER 3_

THE RAIDER

A silence hung over the room when Cannell ceased to speak. I drew a long breath and turned to Lantin, my brain awhirl, but already he was calmly questioning the archeologist.

"This thing you call the Raider," he began; "I don't understand your description very well, Cannell. Do you mean that it was just misty gas or vapor, able to change into solid form at will, and change back? And, withal, a living, intelligent thing?"

"I mean just that," Cannell told him. "The thing is undoubtedly a sentient, living being of extraordinary intelligence and powers, able to assume either a solid or gaseous form. The phenomenon of the three shining orbs, changing from green to purple and back, is connected with that change in form, I assume. And at the same time I believe that triangle of the three lights to be the center of the thing's consciousness and intelligence, its brain and sense organs.

"Such a thing is not impossible, Lantin," he went on. "You and I, intelligent, living creatures, are composed of solid and liquid elements, but there is no real reason why life and intelligence could not be present in an entirely gaseous creature. And as I believe, this creature only assumes the gaseous form when it is traveling through time. The winds that accompany its passage through time are undoubtedly caused by the fact that as it flashes on into a different time, it leaves in the atmosphere a sudden vacuum, and the surrounding atmosphere rushing in to fill this vacuum causes the gusts of wind."

"But where could the thing come from?" Lantin objected. "Where was it taking you?"

Cannell's face darkened. "I believe that it comes from the far future," he said slowly. "Who can say what manner of creatures will inhabit earth a million years from now? And it may be that this thing, a being of some future age, has discovered a way to travel through time and now sweeps back at will, snatching up luckless humans in every age. The purpose of these raids, who can say? Maybe for victims or slaves or food even. It is all a mystery, even to myself. One thing alone is clear to me, that the thing does come from some future time, since it was speeding back into the future with me when I escaped it."

I found a chance to interject a query. "But how?" I asked. "That's what interests me, the method of traveling through time at will. I've heard theories on that subject, but this actual accomplishment, this power to race into past or future--have you no idea as to how that is done, Cannell?"

He considered before answering. "The transformation into a gaseous form when time-traveling is a significant detail," he said. "I have an inkling of what power the Raider utilizes to speed through time. I was in the thing's grip only for a few minutes, but I noticed some things, even in that short time, that set me thinking, afterward. I formed a rough theory concerning the method of time-traveling, and on the voyage home I jotted down some notes concerning it, intending to investigate the matter later."

Reaching into an inside pocket, he brought forth a little packet of soiled envelopes and folded sheets. "My own idea about it--" he began, then suddenly broke off speaking and sat motionless, listening tensely. Astonished, we listened likewise, but the only sound was the far dim roar of the city below, and the curtains at the open French windows, billowing gently in a soft breeze. From an adjoining room came the faint chime of a clock.

Relief dropped on Cannell's face, and its tense outlines relaxed. "I thought I heard--" he murmured, then abruptly stopped and jumped to his feet, his eyes wild. My heart gave a sudden great throb, for through the open windows came the sound of a high, thin whistling, far and faint and crystal-clear, an eery chorus of piercing knife-blades of sound, that shrilled out louder and louder, swelling to a roaring tumult of wind-sounds. The window-curtains whipped up madly, in a buffeting gale, as through the windows came a breath of icy air.

Abruptly the lights of the room went out, plunging us into darkness. There was a shout from Lantin: "The switch!" and I heard him running toward it. Outside the wind-shrieks had risen to a thundering bellow, and there were cries and running feet, somewhere in the building below us. A dark, erect figure appeared in the open window, silhouetted blackly against the brilliant lights of the distant streets. It poised there a moment, then passed out onto the outside roof, walking stiffly and unhumanly, like a puppet pulled by unseen strings.

"Cannell!" I cried; "get back!" I raced across the room toward the window, and in the darkness collided with Lantin, who was making for the same objective. We staggered, recovered our balance, rushed together to the window, and then recoiled.

Standing at the roof's edge, darkly outlined against the city's splendid brilliance, was Cannell, and down upon him from the upper air was dropping--what? A changing, inchoate shape of gray, at the center of which burned a little triangle of three radiant circles of purple light, one above the other two. In the moment that the thing swept down on Cannell, the roaring winds hushed for an instant, and we saw a writhing, shapeless arm reach out from the central mass, grip Cannell and draw him in. The gray mass hung for a moment, then the purple lights flashed into green, and at the same time the thing had changed into a swirling cloud of dense gray vapor, the three green orbs at its center, and the roaring winds shouting again with renewed power. The thing rose swiftly above the roof, holding Cannell, hung for a moment above us, a tornado of whistling winds, then vanished like a clicked-off cinema scene.

But as it disappeared before our eyes, as its raging, piercing winds died away to a mere whisper, out from the empty air where it had been rang an eery, fading cry, Cannell's voice, coming faintly down through time.

"Lantin! Follow--follow--"

Then the last word, coming dimly to us like a ghostly echo out of space and time, but with a world of fear and horror in it:

"The Raider!"

_CHAPTER 4_

INTO TIME

"And you really mean to try it?" I asked incredulously.

"I do," Lantin quietly replied. "I am going to find that secret of time-traveling and go after Cannell."

I stared at him doubtfully. A day had passed since we had seen Cannell seized by the misty shape of horror he called the Raider, and now, in the same room in Lantin's apartment, we were discussing what we had seen. After the first hours of dazed terror following the seizure of Cannell, I had fallen to sleep on a couch in that room, and when I woke in late afternoon, the whole thing seemed only a tortured nightmare.

"It seems impossible," I told Lantin. "We saw Cannell taken, yes, and we saw--the Raider. But after all, we have no proof that he was taken into time. That thing, the Raider, may have merely thrown a veil of invisibility around itself, and thus vanished. A crazy idea, I admit, but not as wild as this one of time-traveling."

"You do not believe your own words, Wheeler," answered my friend. "You heard Cannell's story, and in your heart you believe it. I believe it utterly, for it is the only way of accounting for that three-year disappearance. You noticed that Cannell seemed no older, after those three years? And then, as further proof, came the thing he described to us, the Raider itself."

"We saw that," I admitted, "but all argument aside, Lantin, this idea of moving through time at will seems absurd. Of course, I've heard fantastic ideas on the subject, but how could anyone really tamper with time, the most unalterable and remorseless quantity in life?"

Lantin considered me before replying. "Such an achievement is beyond our present science," he conceded, "but it may be quite possible to the science of the future. You see my meaning? Remember, Wheeler, it is only within the last few years that our science has learned anything at all about time. Previously it was considered one of the last mysteries, never to be investigated or explained. But now, with the recent work of Einstein and Lorentz and Minkowski, we are beginning to learn something about this time. We have learned, for instance, that it is only another dimension of space itself, and that the four dimensions of any object are thus length, breadth, thickness, and _duration_.

"We know now that time is not fixed and unchangeable, but relative and varying, that the time of Venus is not the time of earth, and that the time of Sirius is different from either. And remember, all of this we have learned within the last few years.

"What, then, may not be learned in the next thousand years, the next ten thousand, the next million? Is it not reasonable to suggest that men will advance farther and farther in their knowledge concerning this elusive thing, time, until they finally will advance so far that they will be able to _control_ time, to travel in it at will, and thus sweep back from their own day, back to our present age? Is it not possible that men can do this, in some century to come?"

"That _men_ can do this?" I repeated. "_Men_, you say, but the thing we saw was no man, Lantin. That thing, the Raider, was very far from human."

"It is so," he admitted, "but that proves nothing. The Raider may be some thing of the far future, either a strange product of ages of change and evolution, or a visitor from another planet, racing through time and snatching up victims in every age and land. You remember that Cannell was seized at Angkor? And a thousand years ago, Angkor was a mighty city, and who knows but the Raider was speeding back to the days of Angkor's life and greatness, when it chanced on Cannell there? It is a strange business, Wheeler; but one thing I am certain of, and that is that the Raider does come from some time far in the future, and that it has taken Cannell back with it to that time."

"But the method," I insisted, "the method of traveling through time? How is that accomplished? Cannell spoke of a theory he had concerning it. And he gave you those notes--"

"I've examined those notes," Lantin said, "and rough and fragmentary as they are, I think that in them lies the secret of time-traveling. Cannell knew something of modern science, Wheeler, and the conclusions he drew concerning the Raider are significant. It was his theory that as time is the fourth dimension of matter, there is no basic reason why we can't move at will along that dimension. We can move as we wish in the other three, up-and-down, right-and-left, and back-and-forward, so why not in the fourth, that is, sooner-or-later?

"And his idea, as expressed in his notes, was that the Raider's movement along the time-dimension was based on electronic acceleration. You know the electronic system as well as I, and realize that the smallest division of matter, the atom, is nothing but a number of electrons, or particles of electricity, revolving around a nucleus. Cannell believed, and I think he was right, that that movement of electrons is the basis of the movement along the time-dimension.

"To make you understand that, let me take an example. Suppose all motion on earth stopped entirely, so that there was not the least bit of visible motion in earth or heavens. Sun, moon, stars, ships, clocks, trains, rivers, people, every form of motion stopping completely, so that the earth was a completely motionless world. Then would it not be a timeless world also? In other words, without change there would be no such thing as time, for time depends on and is measured by change. So that all movement along the fourth or time-dimension is intimately related to movement along the other three or space-dimensions.

"It is exactly the same with a single, isolated object. Take a metal ball, for instance. It moves steadily along the time-dimension, _from_ the past _toward_ the future, only because the electrons that compose it are constantly moving along the space-dimensions, are constantly revolving around their nucleus, at the same unvarying speed. If you stopped that revolving of electrons, the ball of metal would become static, timeless, would cease to move along the time-dimension. But suppose instead of stopping the electronic movement, you accelerated it, speeded it up? Then the ball of metal whose electronic activity was thus accelerated would move on through time _faster_. Everything around it would still move along the time-dimension at the same rate, but it would be going faster, would speed on into the future, ahead of the things around it. And the more its electronic motion was accelerated, the farther into the future it would go.

"In the same way, if the electronic motion was reversed, the metal ball would go _backward_ along the time-dimension, would speed back into the past. Thus you see how such a principle could be applied practically and enable one to speed into past or future at will, simply by accelerating or reversing the motion of the electrons making up his vehicle, or car."

"It seems reasonable," I admitted, "but the difficulty remains, for how could the movement of electrons be thus accelerated or reversed at will? Why, no man has ever even seen an electron, or ever will, they're so infinitesimally tiny. Then how affect their speeds, their directions?"

"You mention a difficulty," Lantin replied, "but it could be overcome, Wheeler. As you say, no man has ever seen an electron, but for all that, men have done some strange things with electrons. They have shot them through films of water-vapor and have thus been able to record their speeds and courses, without seeing the actual electrons. And just recently, an American scientist was able to change the course of electronic motion entirely, and shoot a stream of electrons in any direction at will, the so-called cathode rays. When that has been done, it doesn't seem altogether impossible to change their motion in another way, by accelerating or reversing it."

"But there's another thing, Lantin," I said; "even though you achieved the impossible and found a way of time-traveling, how would you find Cannell? How could you find him, without knowing what age or what place the Raider has taken him to? It seems like hunting for a needle in a haystack, a thousand times magnified in difficulty."

Without answering, Lantin went to a cabinet and brought forth a big globe, which he placed on the table before me. "I have a theory on that, too," he said. "Note the lines I've drawn on this globe," he added, indicating some long black pencil-lines that had been drawn on the round surface in the region of the Pacific Ocean.

"Cannell was seized at Angkor, as we know, and he was dropped in the open Pacific at a point a few hundred miles east of Manila. I have marked that point with a dot here, for Cannell learned the latitude and longitude of the spot and jotted it down. Now is it not reasonable to suppose that when the Raider dropped Cannell, through the pain or surprize of his shot, it was progressing in a straight line toward its own base, or home, or lair? Of course, it was moving through time also, but in space it was probably heading straight toward its home. So if we draw a straight line from Angkor to this dot, on the globe, and then continue that line straight across the globe, it's reasonable to assume that somewhere along that continued line is the Raider's home.

"Now, you heard Cannell say that when the thing came to the ship and fled away with the two sailors it seized, it was heading due north when it vanished from sight. So from this dot west of Panama, representing the ship's position, I have drawn another line straight north. You see, the same reasoning applies here, for the thing would again head straight toward its lair with its victims. The two lines cross each other, as you see, in southern Illinois. And if my theory is correct, somewhere near that point of crossing is the Raider's home, though in what age I do not know. So if one could find the secret of time-traveling, and speed into the future, hovering near that spot, there is a chance that you would find the Raider--and his victims. It is a long chance, of course, but the only one."

I was silent, pondering the things he had said. But I felt the question in his eyes, and sensed his appeal before he voiced it.

"And you, Wheeler, will you help me? Together we can do this, can find this secret of time-traveling and go after Cannell, follow him as he cried for me to do. I know that he was not your close friend, as he was mine, but I am asking you to help, nevertheless, for you are the only one I can go to for aid. Who would credit the thing we saw, if I told it? But you saw, and you know, you understand. And if we could work on this together--"

Without replying, I stepped to the window and looked out, inwardly struggling for an answer. While we talked, night had fallen, and again the brilliant lights of the city had blossomed, like burgeoning flowers of flame. A day had passed since we had seen Cannell seized, from this same window. Just twenty-four hours!

I must have spoken my thought aloud, for Lantin, who had come up and was standing beside me, repeated it. "Just twenty-four hours--to us, Wheeler. But how long to Cannell, I wonder? Where is he tonight, do you think; what thousands, what tens of thousands of years ahead? And wondering if we will come after him, if we will save him--"

He stopped, but the thought persisted. Where _was_ Cannell, now? Caught in some web of utter evil, far in the future, some unholy lair of that hellish thing, the Raider? I remembered the fear on Cannell's face, the fear in my own heart when the Raider had flashed down on us. Could I venture against such a creature, even though we found the way to cross time? Would I dare to pit myself against a being like that?

There at the window I battled my own fear, and when I finally turned, it was to extend my hand to Lantin.

"I'm with you," I told him shortly; "if we can discover the secret of the Raider's power, we'll follow Cannell--into time!"

_CHAPTER 5_

THE BUILDING OF THE TIME-CAR

It is not my intention to relate here the details of the work that occupied our attention in the following weeks. It has been dealt with at length in two technical treatises by Lantin and myself. The theoretical side of our work has been very fully discussed in those two books, but the concrete details are purposely slurred over. The most valuable part of our achievement, the time-wave itself, is hardly mentioned in them.

There is a reason for this, and that reason is the firm intention of Dr. Lantin and myself not to impart any information that would enable anyone to duplicate our own experiment. Thus it is of necessity that parts of this present record are vague and indefinite.

I may say, though, unquestionably, that without the notes that were left us by Cannell, we could never have achieved the success we did achieve. Those notes, brief and unsatisfactory as they were, were yet enough to set our feet on the right path, in our quest of the time-traveling secret. To us, then, the problem was one of accelerating electronic activity, and all our experiments were directed toward that goal.

Fortunately, Lantin had virtually a free hand at the Foundation, and we were able to use the matchless resources of its great laboratories to further our quest. Working constantly together and maintaining complete secrecy regarding the object of our experiments, we sought for some force capable of controlling the movement and speed of electrons, at will.

The weeks dragged by, and we seemed no nearer success than ever. And at the Foundation, some curiosity was being evinced regarding our work, which ill-fitted with our desires. We had made trial of every form of vibration, it seemed, and all without success, for none affected the electronic movement in the way we wished. In the end, it was by a combination of electro-magnetic waves and light rays that we finally achieved success.

I say "we," but it was Lantin's triumph. He had the inspiration to combine high-frequency Hertzian vibrations and light-rays, merging the two dissimilar vibrations into a single wave, which we called "the time wave" and which had power to affect the very electronic structure of matter, all electronic movement within its radius being stimulated and accelerated by it. And with it, we proved the correctness of Cannell's theory, for when we turned the wave upon small objects on the laboratory table, they vanished, reappearing a few seconds later, having been driven into the future for those few seconds by the force of the time-wave.

By reversing the action of the wave, the electronic movement was reversed also, and thus the basis of our needs was found and we had a force that could sweep all things in its radius into past or future at will. Then it was that Lantin began to speak of a car, a car containing a time-wave projector powerful enough to convey the car and all its occupants into past or future. It was vitally necessary, he thought, that such a car should be able to move in space, as well as time, and to acquire this power we had recourse to a discovery accidentally made in the course of our experiments.

In our efforts to change the movement of electrons, we had found that when a stream of them was shot out in a concentrated ray, in any one direction, it produced an invisible but powerful repulsion. It was on this fact that Lantin relied to move our car in space, directing electron-streams toward the ground to raise and hold us in space, and directing other rays obliquely down toward earth, to move the car from side to side in any direction.

The work went on. Six weeks after the seizure of Cannell, our car was nearing completion, and a strange-appearing vehicle it was. It was a short, thick cylinder of steel, tapering to a point at each end, its greatest diameter some five feet and with a total length of fifteen, from point to point. Windows of heavy glass were set at regular intervals along its length, and entrance into the car's interior was through a circular door or manhole in its upper surface, the car being quite air-tight when this was closed.

Inside, the cylinder's bottom was flat-decked and covered with upholstery, since the small diameter of the cylinder made it necessary for us to either sit or lie on that floor, when operating the car. The time-wave apparatus, covered by a metal shield, was placed in the fore end of the cylinder, with the mechanism that produced the repulsion ray beside it. A small, square switch-board held the centered controls of both these.