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Title: The metal horde

Author: Jr. John W. Campbell

Illustrator: De Pauw
        Leo Morey

Release date: May 24, 2024 [eBook #73679]

Language: English

Original publication: Jamaica, NY: Experimenter Publications Inc, 1930

Credits: Greg Weeks, Mary Meehan and the Online Distributed Proofreading Team at http://www.pgdp.net


*** START OF THE PROJECT GUTENBERG EBOOK THE METAL HORDE ***





                            The Metal Horde

                       By John W. Campbell, Jr.

                 _Author of "When the Atoms Failed."_

                        Illustrated by DE PAUW

    _What with calculating machines and robots and now perhaps
    even mechanical airplane pilots, there seems no limit to the
    possibilities in the realm of working machinery. We have
    seismographs that can locate the place of distant earthquakes,
    and machines that can solve, in a comparatively short period,
    problems in the higher calculus that would otherwise take brilliant
    mathematicians an endless time to do. It seems to us quite logical
    that machines might some day, perhaps in the distant future, be
    developed to solve for our scientists now apparently insoluble
    problems. Or they might even be made to state their own problems
    and work them out--in other words, it might some day be possible
    to have a machine with almost a working brain. According to our
    author, this will be possible and his final explanation of his idea
    is exceedingly clever and novel. There is no question Mr. Campbell
    knows his science and he has by this time proved his ability to
    weave a great deal of sound science into an absorbing scientific
    fiction story of exceeding plausibility._

           [Transcriber's Note: This etext was produced from
                      Amazing Stories April 1930.
         Extensive research did not uncover any evidence that
         the U.S. copyright on this publication was renewed.]


It would seem lack of generalship that permitted them to be discovered
so soon, for had we not picked up those signals from the ether we
should not have received that warning that meant so much to us, and
it might well have been that this system would have acquired a new
population. For it would have needed but little to shift the balance
the other way! Once I watched Steven Waterson save the civilization of
the Earth, but now I saw him in a greater rôle, for it was he who made
possible the defeat of the Sirians. But even had his brilliant mind
succeeded in working out the problem of the de-activating field without
the precious hours gained by that warning, many millions more would
have died before they could have escaped from Mars.

I was in his laboratory at the time he received the messages from the
System government telling the import of those strange tone-signals out
there in space. I seem fated to be with that man every time some great
event breaks on the System. I was with him when Dr. Downey announced
his discovery of the secret of old age--or, better, its prevention.
Waterson was forty-two now, in years, but in body he was still
twenty-eight for it was late in 1947 that he had taken Dr. Downey's
treatment.

Those strange tone-signals had been heard faintly for days, but it was
not until July 8th, 1961, that they were located in space, and then man
began to realize something of the message they might bear.

Waterson asked me to accompany him to the System Capital on Venus, and
I was present at that first Cabinet meeting, and at each succeeding
meeting. Again I was close to the facts--and again Waterson has asked
me to write a chronicle of that terrible War.

It was not till the signals had definitely been located as originating
far out in space that man began to take more than a mildly curious
interest in them. They were coming from the Metal Horde that was even
then sweeping across space at a thousand miles a second to the planets
ahead.

Their goal of ages was in sight. Sixteen hundred years of ceaseless
rushing flight had at last brought them near.

When our ancestors were beginning to grumble under their Roman lords,
in the time of Horlak San, when his mighty armies were sweeping their
way across Mars under the newly developed heat rays, spreading death
and civilization at one time, that menace started on its expedition.

When the Normans invaded England, when the mighty empire that the San
dynasty had maintained over all Mars was crumbling, that journey was
half done.

When Columbus first set foot on the shores of America, when Koral Nas
formed the great union of the federated nations of Mars, that trip was
three-quarters done.

But it was seven-eighths completed when Mars developed the first crude
atomic engines, and when Priestly of England discovered oxygen. And
during the two centuries of flight that remained before they reached
their goal, there developed on those tiny planets the instruments that
were to throw that mighty force down to defeat.

But I am to tell you of that war as I saw it; we have all seen it--all
too closely! It was really but a little more than a month that that
Menace of Metal hung over us there on Mars, but to us it seemed years,
except to the frantically working scientists, striving desperately to
discover some weapon to defeat them. David Gale.

       *       *       *       *       *

A tiny glistening mote in space it was, as it sped toward the shining
planet before it--the rapid flight of the car aided by the gravity of
Venus. The call had been urgent, and the Earth had been in superior
conjunction, that meant a full twenty-hour trip, even at 1000 miles
a second, but now they were approaching the planet and the pilot was
losing speed as rapidly as possible. There was a limit to what he could
stand, though, and it took him many thousands of miles to bring the
machine down to a speed compatible with atmospheric conditions of the
planet.

The air of the planet seemed thick with traffic, mighty half-million
ton lift freighters and passenger ships setting out toward Earth,
smaller private machines, but none were slower nor faster than the
others, for all were limited only by the acceleration they could stand.
There was only one speed limit, that of economical, safe operation,
for with all space to move in, there was no need of speed laws. Yet
it seemed impossible to make any more than two thousand miles an hour
through this slow moving air traffic--then there shone a little emblem
on the bow of the little iridescent metal ship, and a huge freighter
swerved respectfully aside. As by magic a lane opened through the thick
traffic as the sign of the System President shone out.

The little ship darted along the ground a short way, then rose
vertically, only to settle lightly on the roof of the great System
Capitol. Two men came out and walked quickly to the elevator entrance,
where three guards, armed with disintegration ray projectors, greeted
them with a stiffly military salute. The larger of the men responded
with a smile, and a brief salutation in the common language of the
System, for these great men were Martians, each well over eight feet
tall. They entered the lift, and quickly sank down one hundred and
fifty stories to the Governmental Offices. They proceeded directly
to the great Cabinet chamber, down through the long halls, lined on
each side by huge murals depicting scenes in the history of the three
planets. Then they came to the cabinet room and entered.

Thirty-nine men were seated there now, but as the two entered, they
rose, and waited for the President to be seated. The forty greatest
living men were in that room that day and all worked together, for
they were scientists who had learned the value of cooperation. There
was no rivalry, for each was the greatest in his own field and had no
aspirations toward any other branch of science. And none but conceded
the power of the Presidency gladly to the greatest of them, Steven
Waterson of Earth.

"Gentlemen of the Cabinet, I am beginning to believe it is time we had
something added to the Constitution forbidding Members of the Cabinet
to rise on the entry of the President." Waterson deeply appreciated
that compliment, as they all knew, but he could not feel at home
in an atmosphere of diffidence. He was a scientist, a planner, not
a diplomat. "I am sorry I was forced to make you gentlemen wait for
me, but as you see," he continued, pointing to the great map of the
System on the ceiling of the Cabinet chamber, where the slow motion of
the planets in their orbits was being accurately traced, "Earth is in
superior conjunction at present, and I could not make better time.

"I see from this memorandum that has been prepared for me that Mansol
Korac, Martian Astro-physicist, is to be our first speaker. I take it
you have had no official discussion as yet?"

He was correct in this assumption for the men had convened shortly
before at his radio announcement that he would land within an hour.

Some years before there had been some agitation to have the Cabinet
meetings carried on by Radio-vision plates, but the low speed of light
had made the speeches a terrible failure, as they would frequently
have to wait ten or even fifteen minutes while the radio messages were
reaching them. Over short distances that method was practicable, but
between planets light is too slow, it cannot be used.

"Some time ago our radio engineers developed a new instrument for
detecting exceptionally short waves. They really came under the
category of the longer heat radiations, but were detected electrically.
While experimenting with this device they have been consistently
picking up signals apparently originating in free space. At first these
signals were exceedingly weak, but their intensity has grown uniformly
and rapidly, and from the results some amazing conclusions have been
drawn.

"They are originating at some source or sources out in space in
the direction of the sun Sirius. I was asked to help the radiation
engineers under Horus Mal in the calculation of the Astro-physical
aspect of the problem. I believe that there are some man-made vehicles
out there in space sending those signals. No man of the System has
ever had reason to venture beyond the orbit of Neptune for any great
distance; there would be no reason for it, as none of the outer planets
are habitable. The rate of increase of the signal strength, coupled
with observations made from Earth, Mars and Venus, have made it evident
that they are at present about one and a quarter billion miles away,
but approaching us at the rate of 1000 miles a second. This means that
in approximately two weeks they will reach our planets.

       *       *       *       *       *

"As to their point of origin we can only make guesses really. They are
coming toward us with Sirius--and thousands of other stars--at their
back. Of all, Sirius is the nearest, being approximately nine light
years away. This means that they must have spent at least 1600 years on
that trip across space. Dr. James Downey of Earth has recently shown
us how to lengthen life almost indefinitely, so the problem of old age
need not be considered. A supply of air and water would, of course,
be no great problem with the Waterson apparatus for electrolyzing CO
back to carbon and oxygen, using atomic energy fuel. Water, of course,
is merely transmuted and recombined and thus automatically purified
for use. A sufficient reserve of very dense materials could easily
be carried that would make up for any losses by transmutation to the
necessary gases. As yet we have not been able to make foods from
energy, carbon, and oxygen and hydrogen, but I believe you, Dr. Lange,
have made very considerable progress along that line, have you not?"

"I intended announcing at this meeting," said Dr. Lange, "the
development of a commercial method of manufacturing any one of
the sugars and several proteins directly from rock or water, by a
transmutation and building-up process. The method has been developed."

"Then," continued the Martian, "there would be no need of carrying any
great amount of food. That problem is settled.

"As there would be no resistance encountered in space, once the machine
had been accelerated to its definite speed of 1000 miles per second, on
leaving Sirius it would be able to make the trip across space with no
expenditure of energy, until it reached its goal and slowed down to the
speed of a planet. Hence no great amount of matter-fuel would be needed
to drive the machine.

"But the problem of heating seems to me to be insoluble. Interplanetary
space we have the radiations of the sun to depend upon, and they are
decidedly sufficient, usually superfluously so. But in the infinite
depths of interstellar space, there is only darkness and a perfect
reservoir for radiations. There would be continuous cooling by
radiation, and no sun to warm the ship. I could understand how the
ship might carry enough matter to warm it for one hundred years, but
in sixteen hundred years so much energy must be radiated that the
entire mass would not suffice. Nothing short of an entire planet would
be sufficient. Polished walls would reduce the radiation, but still
it would be too high. I can not understand it--unless these men can
endure a temperature of but twenty or thirty degrees above absolute
zero--then they could make it quite readily--but two hundred and forty
degrees below zero Centigrade means that air--nearly everything would
be solid, except a few rare gases. No it seems impossible--yet we have
the evidence! I can not understand how they have made this terrible
migration, but I know that there are many different units. I believe
two thousand or more was the number you mentioned Horus Mal?"

"There seem to be a very considerable number of separate signals that
we can distinguish. I consider the two thousand a very conservative
estimate," replied Horus Mal, the Martian radiation engineer.

"Then," continued Mansol Korac, "we must decide on some plan of meeting
them."

The Martian sat down and for some time there was silence in the great
hall. At last President Waterson rose slowly to his feet. His face
showed his concern. In times of emergency he always felt that these men
here were responsible for the welfare of the twenty billions of human
beings they controlled. And he was their leader, and therefore the
responsibility was his.

"Mansol Korac, could you point out to us the approximate location of
the approaching ships?" asked Waterson and handed him a small hand
light and pointed to the great map of the system above them.

"I cannot be very exact, Mr. President; I do not know their location
very definitely, but I should say about here, proceeding thus." The
dazzling beam of white light stabbed up to the ceiling high above, and
a sharp circle of light a foot across appeared, just within the orbit
of Uranus, but well beyond Saturn. Then it slowly moved inward toward
tiny glowing Mars. They were within the Solar System, but had not yet
reached the Inner Ring of planets. Doubtless they who could make a
trip across the great Void had the energy of matter at their disposal,
and probably the disintegration ray. They would have no difficulty with
the planetoids, they could merely beam them out of existence if they
came too near.

The light snapped out, and each member of the cabinet turned toward
Waterson again.

"Gentlemen, we see that they are within the Solar System already
and appear to be heading directly for the Inner Ring, and Mars in
particular. I do not know whether they come in peace or as invaders,
but I think I can reasonably say that they are probably invaders. We
all agree that they have made a trip of some 1600 years' duration.
We all recognize the difficulty of such a trip. There are over two
thousand ships in their fleet. I would not send so large a fleet to
investigate the Outer Ring, but to send that great number of ships on a
mere exploration trip of 1600 years--I do not think it is consistent.
Then, too, we must allow them a life span of over three thousand years
if we are going to admit that this fleet is for exploration, for it
would be three thousand two hundred years before they could bring back
news of their trip. In the meantime they might well have been wiped
out by some stellar catastrophe, or they might have developed means of
seeing us directly in nine years, the time light takes for the trip.
Much as we would prefer peace, I fear we must prepare for war. But we
can always go out to meet them peacefully, in a great battle fleet.
That might convince them that it is better to deal peaceably with
us and it would at least be a protection. I suggest that we have a
discussion on this, and take a vote."

But there was no discussion, and the vote was unanimous, for the
President's suggestion was the logical thing. They had to be prepared
for either peace or war.

Then came the discussion of weapons. There was pitifully little to
discuss. The interplanetary patrol fleet was a mere police force,
designed to destroy meteors, turn comets or asteroids. There was no
real naval fleet. But mechanical devices had reached a great peak
of perfection and the little space ships were so cheap, so easily
operated, and so eminently safe, that nearly every family had several,
and new ones were always in demand. There were mighty factories to
meet this demand. Twenty billion people can absorb a tremendous number
of machines. That was the greatest protection we had, and it was
that quantity production, developed by the American, Ford, that made
Waterson's campaign possible. But we were to learn much of quantity
production methods before that war was over!

       *       *       *       *       *

Orders were issued that evening to all the great plants over all
three planets to begin work on a great quantity of ten-man-high speed
ships. They were to be arranged with mountings for machine guns firing
explosive bullets loaded with material explosive, each one equal to
100 tons of the old fashioned Dynamite, with special mountings for Dis
ray machines. The disintegration ray machinery was to be built by the
companies employed ordinarily in making private power plants, hand
lights, and the jumping belts. These belts had small projectors that
threw a directional beam of force that tended to deform the curvature
of space, at that point, and the result was a force that pulled the
projector forward, for the space before it acted like a spring. If a
magnet be held near a steel watch spring, the spring will bend, but
it will try to straighten out and pull the magnet forward. If the
magnet could pass through the spring it would progress, as the space
curver apparatus was pulled through space. This was the principle
of every ship now built, from these tiny two-kilogram (nearly five
pounds) machines capable of lifting a man into the air, to the titanic
new passenger-freight liners carrying as high as three quarters of a
million tons.

The principle of the disintegration ray was not greatly different, and
so the machines designed for turning these out in quantities were used
to make the Dis ray apparatus with no great changes.

The heat ray projectors were made in quantities for every purpose, they
were used for cooking, for welding metals, for warming the home, for
melting down cliffs to make way for a building or a tunnel for water,
for heating the mighty space ships, for anything to which heat might be
applied to advantage. These would make very effective weapons but for
the fact that heat rays could be reflected. They would bounce off the
car of the enemy without doing any damage if it were polished, as no
doubt it would be.

Great liners of space were requisitioned and fitted with Dis rays, and
with mighty attractor beam apparatus that would grip and hold anything
short of another liner. Each of the ten-man-cruisers had a smaller
attractor beam by which they could grip an adversary and hold to his
tail with the tenacious grip of a bulldog and yet not weary the pilot
with violent movement. These ships were exceedingly powerful, and their
speed was limited only by the accelerations the passengers could stand.

But all the scientists of the System were working desperately to
design some new weapon, some new machine that was a little faster, a
little more powerful; although with resistance in space and with the
tremendous energies of matter at their disposal, there was little lack
of power as far as the speed of the ships were concerned. Ten thousand
times more powerful than the titanic energies of atoms, this energy
had defeated the Martians that memorable day in May, 1947, and it was
a full ten billion times more powerful than the energies of coal, of
oil, of the fuels man had known before that day. But they needed a
machine that could project the Dis ray farther. Twenty-five miles was
the limit, beyond that the tremendous electrical field that was used
to direct it must be built up to so high a voltage that there was
no practical way of insulating it. They must be satisfied with the
twenty-five mile range--but the scientists were working at increasing
the range.

They had two weeks before the Sirians would reach Mars, and in those
two weeks much was done. There was a very carefully laid out system in
all notices; the absolute truth was laid before the public, but there
was also laid before them the evidences of Man's power. There were no
panics. This was no weird thing to them, the landing of a fleet from
another world; it was as commonplace to them as the landing of a fleet
from the other side of the ocean had been a generation ago. The element
of the unfamiliar was gone, and with it had gone the element that
produces panic, that reduces the efficiency of a nation or of a System.

New production machines had to be built, new designs worked out, new
dies cut, but it was done with the quickness that a generation of mass
production had made possible, it was not new to them, this change of
design overnight.

It required most of those two precious weeks to get the great machines
working once more at their tasks, but at last a steady stream of
ten-man cruisers was being poured out, 5000 an hour, night and day,
from the factories of three planets. But there was only one day to
work before the Invaders would reach Mars, and the fleet was gathered,
120,000 ten-man ships, manned by the volunteers of three worlds.

But in the meantime Waterson had had built for himself a ten-man ship
with triple strength of walls, and triple power plant installation, and
an extra energy generator. He was experimenting with it, no one knew on
what.

At last the invaders were seen. Far out in their course the scouts had
met them. Those scouts were destroyed, without provocation; they did
not even have time to finish their reports, but we learned enough.

Mars was a deserted planet now. All its population had moved to the
other worlds. Most of them moved to Earth, on the other side of the
sun. Only the workers in the great factories remained. They were not
compelled to. They were told of the danger of their position, but those
factories could contribute 1500 ships an hour, and they were manned.
The fleet had gathered on Mars, awaiting the news of the Sirians, when
the report of the scouts was flashed across the ether.

They told of a great horde of metal ships, shining, iridescent,
ranging in size from tiny darting machines, ten feet long by one and
three-quarters in diameter, mere torpedoes, to great transport ships.
And there was a single spherical ship. A great sphere that floated in
the center of a bodyguard of the thousands of its followers. There were
literally hundreds of thousands of the little torpedo-ships, a few
dozen of the cargo ships, and a few ships that seemed more like scouts
of some sort. But it was apparent that the little torpedo-ships were
the real fighters--tiny ships that spun and turned and darted like an
electron in ionized gas. It seemed impossible that a man could stand
those sudden turns at several miles a second, but they watched them,
and went into nothingness as the Dis ray reached out from those tiny
ships and caressed their ships.

They, too, had Dis rays--it would be a terrible battle, for man had
that same force, a force so deadly they had feared to use it in
industry. But man had the advantage of numbers.

The men on the fleet who saw those television plates glowing with the
story of what was taking place out there in space decided that those
torpedo-ships must be guided by radio. If they were it would be a
simple matter to wreck that system by using a powerful interference
that would drown out the directing wave and make its ships unmanageable.

The System Capital was temporarily moved to the Waterson Laboratories
on Earth. There the forty men had gathered around great television
plates and were watching the battle of the scouts. They were not to go
to that battle front. The System needed them.

       *       *       *       *       *

It was midnight on the part of Mars where the Sirians first struck. The
fleet of the Solar System was massed there to meet them. They seemed
headed for the mighty gleaming city of Metal, below. Dornalus, the
second city of old Mars; was there, and they seemed bent on reaching
it. As the Sirians drew near they threw forward a great shield of the
torpedo-ships; then the great generators on the Solarian fleet forced
tremendous etheric currents into space, and waited to see the motions
of the tiny ships become erratic, but they darted about as steadily,
as easily as ever. These Sirians must be small men! And they must
be from a massive world, a world that had accustomed them to great
accelerations.

Below them the city was deserted except for vision projector machines
that hummed steadily, automatically, from a thousand points. They were
broadcasting the message to the worlds and to the commanding officers
on the other side of Mars. These men had direct control of the battle.
They could not control it from Earth, for radio waves travel too
slowly. Twenty minutes each way the waves took and in forty minutes the
battle was more than over. It lasted only fifteen minutes--minutes of
terrific carnage!

As the two great fleets came into contact, the Solarians drove into
the mass of tiny ships, their Dis rays flashing in every direction.
They had one advantage in that they sprayed nine streams of death from
each of their craft; but the torpedo-ships were so unbelievably fast
that it was nearly impossible to hit them. And they seemed to have no
compunction about raying one of their own ships if a more than equal
amount of damage was inflicted on their enemies. Logical, no doubt, but
how inhuman.

The sky above the city became a blazing hell of Dis rays, heat rays,
and exploding shells. The explosives were not safe, for they threw
great flying fragments that could pierce the wall of a ship and send it
down. They damaged friend and foe alike.

The Solarian fleet had a solid projectile of a single giant crystal of
copper that was immune to the Dis ray. It could penetrate the walls
of a ship and bring it down. But the explosive bombs were more often
than not exploded or merely disintegrated before they reached their
goal. A crystal of any sort was immune to the Dis ray, but it was not
a protection against it. There was no known way of deflecting the Dis
ray except by that special electrical field that directed it, and
that could not be made to surround a ship. The copper crystals were
used mainly to destroy the Dis ray projectors of the enemy. They were
fired at the faint glow, and with luck they would hit the machine and
instantly wreck the projector. More than one machine disappeared as
its own Dis ray projector, wrecked by the fifteen-inch copper crystal,
suddenly spread in all directions.

The sphere and its escort of transports hung back, surrounded by a
great number of the torpedo-ships. They did not join in the fight.

And at last the Solarian fleet was recalled. It was not right that
they should make such heavy sacrifices. The city must fall, and it
would be easy to crush the Sirians with a larger fleet. At the rate of
5000 Solarian ships an hour, they might well do so in three days. So
the Solarians left, and behind on the ground there were a few ships;
a great number had been rayed into nothingness. The Sirians had won
this first victory, but the Solarians could soon make up for this loss.
They had twenty billions to back them up, and they had the resources of
three planets. It seemed as though the invaders could not last long,
but we had yet to learn the true meaning of mass production.

No man could hang around the encampment of that alien race. But above
them television broadcasts were suspended, and some were installed
in the buildings of the city. But these were of no avail, for the
Sirians seemed obsessed with the idea of making Mars a true sphere.
They proceeded to level the great city with Dis rays. No news projector
could remain there, of course, and several news projector men lost
their lives. It was foolhardy to stay in that city; they had been
forbidden, but nothing will keep a newsman out of a chance for a scoop.
The projectors which hung above continued to show a weird scene.

The great sphere and its attendant transports sank gently to the
ground and formed a great wheel, with the sphere as the hub and the
transports as radiating spokes and the rim. High above them the darting
torpedo-ships were wheeling in constant circles. It seems a miracle
that not all of those news projectors were destroyed, but some did last
till the early rays of the sun set them off as shining targets for the
flashing Dis rays. It was a weird scene they showed!

[Illustration: _The great sphere and its attendant transports sank
gently to the ground and formed a vast wheel, with the sphere as the
hub and the transports as radiating spokes and the rim._]

Now from the sides of the great transports came, not men, but great
machines, machines that lumbered along on caterpillar treads to set
themselves down beside their parent ship, one from each ship, and
proceeded to dig themselves in, about three feet deep. Then all seemed
quiet, except for a steady hum from the great machines, fifty-eight
in all there were, great machines--fully two-hundred feet on a side.
They worked there quietly now, and the men within them must have been
totally covered, for they could not be seen. Apparently the Sirians
dared not come out into the Martian atmosphere. And now something was
happening that startled all the billions of watchers on the three
planets. In the top of the great machines was a small trapdoor. Through
this, there came a torpedo-ship that floated up a few feet, then darted
off to join the wheeling machines above. Then eleven seconds later
another came forth--another--each machine there was sending them out
now. One by one those machines released a torpedo-boat--one every
eleven seconds, with the regularity of a clock.

At first men could not grasp the significance of this--but soon it
became obvious. These wonderful machines were complete factories in
themselves, portable, mass production factories for producing those
torpedo-ships, and one each eleven seconds came from the end of the
production line, complete. The noises there were no longer a gentle
hum. There was a whir and rattle of machines. It was not loud, though
considering the mighty works that must have been going on inside. But
steadily now, that darting fleet of torpedo-ships was increasing the
power for all this work was obvious to these men who used similar
processes in their work.

From the soil below them the machines dug masses of matter, and
carrying it up into the machine transmuted its elements, into
the elements necessary to their machines, then molded them, and
automatically assembled them. It would require very little supervision,
but that production-rate was staggering! One each eleven seconds meant
325 completed machines an hour.

There were no signs of any men entering these ships, or the machines,
so it seemed there must be some means of distant control that man
knew nothing of, for it was improbable that all those men could
have been in the parent machine from the beginning. No wonder the
Sirians could lose these machines so freely. The ability to make them
automatically from anything meant they cost practically nothing and
could be produced in limitless quantity. The notion that Man was to
be an easy victor was fast disappearing. These machines were coming to
form an ever-growing cloud of wheeling ships. Still, man had destroyed
fully half their fleet in that desperate struggle; they must spend
some time in making up those losses. But Man had lost nearly a third
of his great fleet. Four hundred thousand brave men had been lost. It
was not even a victory, and it had cost Man far more than it had cost
the Sirians. They had learned something from them, though. Perhaps
radio control would enable man to do an equal amount of damage. Orders
were put through to make an experimental fleet of thirty thousand
radio-controlled machines.

       *       *       *       *       *

In the meantime a new thing was attracting the attention of the people
on the planets. A new set of machines was issuing from the transports.
These were smaller than that first set--low and squat--but they seemed
far more flexible in their movement. They went off in orderly line to
a point a few miles distant from the main encampment and there formed
themselves into two groups. One group remained still, but began to
glow faintly, and a hum came to the televisors above. Then there began
to flow from a spout on the side of each a steady stream of molten
metal. This was poured into a somewhat similar arrangement on the
other group, then these moved quickly away, and with their strange
handlike appendages began to work quickly at a great rounded hull that
was rapidly forming. The men watching understood. It was to be another
cargo ship. Rapidly this hull grew under their swift manipulation,
till it was completed in three and a half hours. An entire ship,
except for the machinery, was completed. And now they began to work
on another, and as they fell to work there started from the original
cargo shops a long line of small, quick moving machines, machines that
could run along the ground or drive through the air, and they were
covered with arm-like appendages. Soon these reached the newly built
hull, and quickly they were at work, getting material from the strange
squat machines, entering the hull, and working at it. The second hull
was nearly completed when one of the smaller machines flew back to
the original encampment and went up to the sphere. From it it drew a
strange metal case, oblong, from which led a great heavy cable. This
it carried back to the now completed ship and installed it somewhere
inside. Then the ship rose easily from the ground and floated around
a bit, landed again, and immediately there came out of it one of the
torpedo-ship machines! None of these had gone in, it had been made by
those slim, quick worker machines! And now there lumbered out a second
machine--one of the strange hull maker machines--then two of the worker
machines came out, where only one had gone in. The ship was complete,
even to its strange crew! And now that strange crew was already at
work, making others!

With the coming of dawn the televisors were rayed out of existence.
But that evening more were installed, and every night during all that
invasion there floated above them those noiseless televisors. They
destroyed many, but many remained.

That night showed us a fleet of nearly a half million of the tiny
torpedo-ships, and a rapidly growing cargo ship camp. There were more
than a hundred now, for as each was completed, the machines made could
aid in the more rapid construction of the next.

And that night they began their work of leveling Mars. That great
fleet spread itself out over all the surface of Mars, and with flaming
heat rays and the terrible Dis rays they cut down every remnant of the
Martian hills. Twenty-four hours later the entire planet was one vast
featureless plain. And on that plain there had been established eight
camps. During this time the cargo ships had been moving, and during
that twenty-four hours they did nothing. But Man was prepared. The
radio-controlled fleet was ready to be given its first try.

The entire fleet was assembled above the surface of Mars, above
that original camp, where still rested the one sphere. Then from
far out in space the great control ships directed the dive of the
radio-control-ships, making the distance one-twentieth part of a light
second. The men directing the ships were no faster than that, could not
respond sooner, and the greater distance gave them greater safety.

But now the radio-controlled ships were released, and permitted to
drop, uncontrolled. They wished to give the Sirians no warning. Then
when the ships were scarcely ten miles from the Sirian fleet, they
were brought under control, headed nose down in a power dive, straight
through the surprised upper layers of the fleet, and with Dis rays
glowing they drove straight for the ships below. Suddenly, there were
great gashes in the ground beneath, and twenty of the cargo ships were
gone in that first rush, and three more followed quickly. But while
literally thousands of the Sirian torpedo-ships had been rayed, nearly
half of the thirty thousand radio-controlled ships of Man were gone.
And now they had to apply full power to prevent striking the ground.
But twenty-two of them continued on in straight fall toward the great
sphere. They were rayed by a hundred ships before they could get really
separated from their companions. And now the fast radio ships were
destroying hundreds of the Sirians, they were formed in a vertical
column reaching up ten miles, one above the other, with the nine Dis
ray projectors going full blast and spinning as rapidly as was safe
lest the machines fly apart due to centrifugal force, for the Dis ray
will work practically instantaneously. The top ship was preventing the
torpedo-ships' attack from above. Suddenly each of the ships stopped
spinning; its Dis ray went out and they dropped like rocks. The radio
control had been drowned out by powerful interference; they were no
longer under the influence of the men, and they had ceased to function.
The radio-controlled-ships would no longer be useful against the
Sirians.

       *       *       *       *       *

Nearly the entire fleet of the Sirian torpedo-ships had been wiped
out by that spinning column. Now thousands of the manually-controlled
ships dove down at the weakened fleet. Every one of the remaining ships
shot up to meet the advancing fleet; there were still several thousand
of the torpedo-ships. And now the sphere rose with them, and among
them. Suddenly the entire mass came together in the shape of a greater
sphere with walls of torpedo-ships, and as it formed the torpedo-ships
snapped on their Dis rays, and started the entire surface of the sphere
spinning! They seemed invulnerable in this formation, but they quickly
moved away across the surface of the planet, the larger part of the
Solarian fleet following, wondering what to do about it. It seemed
impossible to attack the sphere of destruction.

But the cargo ships were left unprotected, and in a moment they
had been beamed out of existence. The Sirians had lost many hours'
work on this battle! And they lost more before the mighty fleet of
torpedo-ships from the other camps rescued them. For now and then an
explosive shell would penetrate the screen of disintegration rays. But
within the outer shield was a second, virtually a shield of metal, for
the metal sphere was surrounded by a solid mass of the torpedo-ships.
But many of these were destroyed. More, too, were put out of commission
by the copper crystals.

On the arrival of the great fleet from the other camps the tables were
turned. The control ships had too low an acceleration, and there were
too many ships for the ten-man machines to get, though they tried to
make a screen of Dis rays that stopped the ships till they were rayed
out of existence. Many of the control ships were lost and many of the
ten-man ships.

It was then that Waterson announced two things that gave the Solarians
new hope.

It was the fifth of August when the announcement was made. And it was
the same day on which nearly the entire fleet from all the camps on
Mars started off for Venus, but the movement was detected almost at
once, and from great underground bases on Mars the Solarian fleet sent
out fifty thousand ten-man ships. These ships skimmed along close to
the ground, and their polished metal had been sprayed with a drab paint
so that they seemed but shadows that became practically invisible as
they sped along, widely separated, but rapidly converging on the site
of the Sphere's camp. This had remained on Mars, guarded by so small a
number of ships that it was evident they expected the Solarian fleet to
go to Venus, as no doubt would have been necessary but for this swift
counter raid.

So perfectly camouflaged were the Solarian ships, that they got within
ten miles of the camp without being discovered. Then, as their Dis rays
flashed out, the entire group of the torpedo-ships dove on them. There
were nearly one hundred thousand of the ten-man ships, diving down at
them in a zigzag course that made them impossible targets, but the
fleet had been approaching from all sides, and now the entire Sirian
defense was concentrating on the machines attacking from the north.
Those from the south crept in behind them, and suddenly the sphere
started into the air, then went flying out into space at terrific
speed. It barely escaped the Dis rays of the attackers. Only its
tremendous acceleration saved it. Now several thousand of the torpedo
ships shot after it, the rest falling into the form of a great disc to
block the path of the pursuers. Man had long been accustomed to two
dimensional maneuvering, but the ease with which these Sirians fell
into complex three dimensional formations showed long practice in the
art of warfare in space.

That raid was successful in that it forced the immediate return
of the Sirian fleet, and very nearly destroyed the sphere. Over
seventy-two thousand of the torpedo-ships were destroyed, but we lost
two thousand ships and twenty thousand men. But Waterson announced
that the Sirians would no longer be able to escape because of their
greater acceleration. He had discovered a method for using an
attractor beam of a short range but considerable power to be used
with an electro-magnetic device that would automatically turn on the
instruments in such a way that no matter what the accelerations might
be, no matter how great, as long as they were within the limits of
the ship's strength, the accelerations and centrifugal forces would
be instantly neutralized, thus making possible violent maneuvers that
the sudden forces had hitherto made impossible. A demonstration of
his new ship had confirmed it. He took up a number of the Cabinet in
his special machine, and turned hairpin turns at ten miles a second!
The acceleration would have been instantaneously deadly had those
neutralizers failed. They might as well have been under a half million
ton freighter as it landed, as undergo those accelerations! But in that
perfectly balanced room, it was not detectable. The ship's hull was
made triple strength, as were the power projectors, and the generators.
It was powered like a freighter, and could reach its full speed of
1,000 miles per second at an acceleration 5,000 times that of Earth's
gravity. Waterson, who weighed two hundred and ten pounds on Earth
would have weighed over five tons! It meant that the Solarian fleet
would no longer be handicapped by the greater flexibility of the enemy
ships. The plants that had been manufacturing the machines had already
closed down temporarily, while the dies for these new machines were
being made. But within thirty-six hours the first of the machines was
being turned out.

And now a great crew of young men were being gathered to man them.
They were all volunteers. There were to be one million ships, and that
meant ten million men would be needed. Only modern methods could have
made that possible, but with three populations, totaling over twenty
billions, a sufficient number of volunteers came forward to make the
work easy. As fast as these men came to the conscription stations,
they were put into the new machines. And here also modern methods
had helped. The Waterson system of material energy release had been
so successful, that the price of a completed car had dropped to well
under one hundred dollars for the small two-man machines. And even for
the interplanetary models not more than two thousand dollars needed
to be paid, for the raw materials were absolutely free, the labor was
mechanically reduced to almost nothing, and as the energy that drove
these machines was as cheap as the raw materials, they merely charged
enough to make the venture pay a decent return on investment and to
pay the wages of the few machine supervisors and the office staff. Men
worked five days a week on three-hour shifts in the factories, but
longer hours and more pay went to the builders, to the men who had to
manually control the building construction machinery, for law forbade
the building of offices on the mass production scheme, since that meant
an unvaried, monotonous city. But everywhere wages were high, for wages
depend, not on the amount of work men do, but on the amount of finished
product they can turn out. The men accomplished more, and were paid
more, but they worked less. It had taken many years to finally convince
the Earth of that, but the example of American labor, with its shorter
hours and higher wages was proof enough. And then the influence of the
mighty energies Waterson had released made it even more apparent. Mars
had already developed the system under the force of the released atomic
energies.

High wages and cheap machines had meant that everyone owned one. And so
absolutely safe were they that they commanded perfect confidence. This
had been a big factor in the making of this mighty fleet. Everyone
knew how to operate the machines, so it was easy to fill the places on
the machines with pilots.

Nevertheless, special training was necessary to overcome the caution
against quick turns that long experience had instilled in them all.
Each accepted applicant was taken up in one of the new machines, and
given a breath-taking ride--a ride that consisted in diving toward the
Earth with terrific sudden acceleration. Then, just when the student
felt certain they would crash and become a mass of molten metal, the
ship was brought up, not a mile from the ground, to settle gently;
then, when they almost touched the ground, they leapt into the air
again with an acceleration that shot them out of the atmosphere with
the velocity of a meteor, while the outer wall of tungsto-iridium alloy
glowed cherry red. Then came sharp turns at ten or twenty miles a
second, till at last the students no longer gripped the arms of their
seats in anticipation of a sudden acceleration. Then they were taken
down and given a ship to experiment with.

But none of these men had ever handled a weapon of the sort they were
to use, so mimic battle practice was held, with the glowing rays of a
harmless ionizing beam instead of the deadly Dis rays.

       *       *       *       *       *

Daily reports were coming from the Martian scouts as time went on.
The Sirians, too, had decided to do some fleet building, for nearly
three-quarters of their fleet had been destroyed. The production rate
of man's factories, 120,000 a day, had gained a slight lead. It would
require ten days before a fleet of a million could leave for Mars with
a home guard of two-hundred thousand ships.

The destruction of the Martian plants had lowered the production rate
to about 3,500 an hour, but shops put up rapidly on Earth and Venus had
quickly brought the production-rate back, and it would be nearer 7,000
an hour by the time the last of the fleet had been finished.

The spinning sphere formation of the Sirians had been almost
invulnerable, and an exceedingly destructive formation. The Solarians
had chosen several thousand of their crack pilots to practice this
maneuver, but despite almost constant practice during the entire ten
days, it was a miserable failure as soon as they tried to progress.
Standing motionless it was a very effective procedure, but the spinning
column was decided on as more effective as long as they had no ship to
protect. There were twenty groups that practiced that maneuver.

And then Waterson announced that an associate of his, working in his
laboratory, had developed a method for using a triple electrical field
to direct the Dis ray, making possible a ray with a range of over sixty
miles. This would be absolutely fatal to the spinning sphere system of
the Sirians. The Sirians very evidently did not know how to project
the Dis ray any further than twenty-five miles. The ability to stand
off and hit them would break down the sphere of Dis rays very quickly.
There was only one objection. The rays were very powerful, so powerful
that they required triple power generators, but the special field of
electrical force was the worst problem. The field could not be made
sufficiently strong if a single layer of the force was used, but the
invention of a method to back up the first with two other layers of
equal voltage, thus getting nearly three times the effect without
exceeding the capacity of the insulation, had made the new machine
possible. This special field was produced by circularly moving cathode
rays, or exceedingly high velocity electrons, and therefore could be
produced only by atomic methods. This meant ten thousand times the
amount of fuel a similarly powered material engine would have required,
but material energy of course yields only wave motions of the transient
or unstatic type, a type that cannot stand still. Atomic energy can
yield static-waves as well as unstatic; the electron can stand still,
and is a perfect example of the stationary wave.

These limitations, in turn, meant that a tremendous weight of equipment
was needed. And a corresponding great volume of space was required. In
the end they had to use specially reinforced freighters to carry the
great projectors, each of which could carry but two projectors. Due to
their long range, however, the ships were at least self-protecting.
There was not time to make and equip more than twenty-eight of these
ships before the fleet was scheduled to start. They were completed
ahead of time. Some of their trial trips more than fulfilled the best
hopes of the inventor. Dr. William Carson, the physicist who developed
it insisted that it was really Dr. Waterson's suggestions that made the
thing possible.

We had learned something of spatial warfare formations from the
Sirians. Now we were to learn a bit of the strategy of spatial warfare.

       *       *       *       *       *

The Solarian fleet sailed for Mars on the fifteenth of August, 1961.
They were a scant twenty million miles from their goal when a report
came from a scout that something was happening down in the Sirian camp.
Almost immediately after that the Sirians flooded our entire system
with so terrific a barrage of radio frequency static that communication
was impossible. They could not transmit from Earth to Venus, and the
communication was very poor even from one side of Earth to the other,
despite the fact that over a half billion kilowatts were used. So
intense was this barrage, that if two of the torpedo-ships near the
sending apparatus came within twenty or thirty feet of each other,
great crashing sparks leapt across, and instantly they were fused.
Scouts saw this happen twice.

The Solarian fleet continued on for Mars. They should cover the
remaining distance--twenty million miles--in five hours by pressing the
ships a little, although higher speeds made the rate of approach of
asteroids so great that they frequently could not be detected before
they collided with the ships.

Only two and a half hours later a scout came into sight at terrific
speed. He must have been doing over two thousand a second, an
exceedingly dangerous rate--but his acceleration neutralizer enabled
him to slow down safely. He reported that the entire Sirian fleet had
risen from Mars, leaving a very few machines behind--this time taking
the sphere with them--and had set out for Earth! Earth was on the
other side of the Sun--a long two hundred and twenty million miles to
go! The Sirians had a lead of three hours. They had as great a speed
as the Solarians and would reach Earth before the Solarians. But they
would at least be delayed by the two hundred thousand ships--more
now, for the steady production would have built the quota up to over
six hundred thousand, or a million by the time they could return. The
Sirian fleet had been built up to nearly three million though, which
could easily crush the fleet of a million, and the second million
later--separately. The trip would take them sixty-two hours. Scouts had
been sent ahead to Earth at a dangerously high speed to communicate
the news, and the entire fleet had increased its speed to a rate that
was considerably higher than safety warranted, but a continuous play
of Dis rays was considered sufficient safety at fifteen hundred miles
a second. The Sirian fleet had been reported to be making thirteen
hundred and fifty, so the Solarians should pass them, or meet them,
just shy of the Earth, where the other fleet would be waiting. They
should have no difficulty to crush the Invaders with the two million
ships.

The radio interference was being maintained by a ship anchored
somewhere in space. It was no doubt well protected, and to attack it
successfully would have meant the loss of a large number of ships, for
the time spent in the attack would delay them irreparably. They must
continue to Earth.

There were no scouts from the Sirian fleet--yet there should have been,
for over a thousand ships had been following them, far behind. None
ever reached Earth to warn the fleet. Every one of them was destroyed.
But when the Sirian fleet was well on its way--it turned--and headed
_for Venus_! They had purposely let that one scout reach the Solarian
fleet with the news that the fleet was headed for Earth--then they
redirected their course. The scouts from the Solarian fleet did reach
Earth--but soon after the last of the scouts following the Sirian fleet
had been destroyed, their radio barrage was lifted. All the ships on
Venus were concentrated on Earth, and Venus was left unprotected.

Twenty hours after the fleet had turned back, the radio barrage was
again lowered over the System. It was ten hours later that the Sirians
reached Venus.

While the radio barrage had been lifted, Waterson had had an idea that
there should be some protection for the planet. It did not seem that
the planet should be completely stripped of its defenses, and he had
suggested that at every city great Dis ray machines of the sixty-mile
range type be set up. His suggestion was followed, and at every city
on Venus the great machines were installed. There were many of them
now, for during the hundred hours the main fleet was in flight the
new machines had been put on a quantity production basis. But all
the ships that were equipped with them, were sent to the defense of
the unattacked Earth! And it was those machines that prevented the
landing of the Sirians. They came to the night side of the planet, of
course, coming from Mars. It would be thirty hours before they would be
expected on Earth--thirty hours before the main fleet would reach the
planet--and then there would be the 160,000,000-mile trip to Venus if
they were to get there in time to rescue the planet.

But the Sirians could not approach within beaming distance of the
cities, and all those that did try to do so, were brought down as
a cloud of powdery dust. It was Waterson's caution that saved the
billions of people on Venus.

But were they to be saved? The Sirians decided they must destroy the
works and the people on Venus, so they made one desperate effort. They
had at least sixty hours to work in, and now they had a plan that would
require time. They retired some hundred miles from the planet, then
the entire fleet, torpedo-ships, cargo boats, and the entire body
guard of the Sphere lined up, and then switched on powerful attractor
beams. Immediately, the combined effect of over three million of these
emanations took hold on the planet, and great tides began to rise in
its mighty oceans. Many lives were lost in the seaside towns, when the
tremendous waves rushed in over the land. But astronomers on the planet
and most of the System's scientists were there to watch the Sirians on
Mars through their great telescopes. And these astronomers saw what
the Sirians intended, and saw that they were well on their way to
fulfilling their aim.

       *       *       *       *       *

A planet is balanced in its orbit about its parent sun with the
delicacy of a diamond on a jeweler's scales. But, like the diamond, if
it be displaced by some force, it reaches a new state of equilibrium.
Thus, if the diamond is further lowered in the scale by adding a small
weight, it soon reaches a new point of equilibrium. No conceivable
force, therefore, could be great enough to displace the planet in its
orbit more than a few million miles by pulling it either in toward
the sun, or out from it, and as soon as that force was released, it
would spring back to its original position as the diamond would regain
its balance on removing the disturbing weight. For the sun pulls on a
planet with a titanic force; it draws it in with the apparent force
gravity, and another similar, but opposite force, centrifugal force
of its revolution in its orbit, is constantly tending to throw it
into the depths of space. These are the two forces that are always
balanced. Suppose the planet is drawn nearer the sun; it revolves in
a smaller orbit--and it revolves in that smaller orbit with a higher
speed--for it has fallen in toward the sun; it has gained speed as any
falling body would. It has gained speed in the direction of the sun,
but this has operated to increase its rotational speed. Thus it has
gained a greater centrifugal force--you can see the effect with a bit
of chalk on the end of a string. The smaller the circle it swings in,
the greater the tendency to fly outward. But as long as we continue
the force that was added to draw it in, it will remain in equilibrium.
Remove this extra force and at once the planet will fall away from the
sun, losing speed as it does so, till it has reached a point where it
is once more in equilibrium with the force drawing it inward.

Now reverse the problem. Let us draw it away from the sun. Now the
orbit is longer, and it has lost speed in moving from the sun. It
cannot stay here, it is not in equilibrium, unless the force that drew
it out is maintained. To free the planet from the sun, one would have
to lift hundreds of quintillions of tons of rock through billions of
miles, against the terrific gravity of the sun. It is too much.

Thus we see that as long as the planet revolves in its orbit, it will
never fall, and to pull it away from the sun is impossible as long as
it revolves in its orbit. But if it slows down in its flight about
the sun it at once has less centrifugal force. It automatically falls
toward the sun until it has gained velocity enough to establish a new
orbit of equilibrium. If this energy, too, is withdrawn; if it is made
to stand still in its orbit; it will fall straight to the sun. It is
the only way such a thing might be done. And it would take the energies
of matter, and strain that to the utmost, to accomplish it.

This was the plan of the Sirians. Three million ships were dragging
like a Titanic brake on the planet as it wheeled in its orbit, and
slowly, steadily it was falling into the blazing furnace of the sun.
Their ships were not designed for this task, but they could do it
in the sixty hours at their disposal. In a short time it would be
falling directly toward the sun, but it would take many hours for the
seventy-million-mile fall. Even if it were stopped before it reached
the sun, any place within twenty million miles would be unbearable.

It was the distressed planet itself that warned the people on Earth and
the men of the fleet that the Sirians would never reach Earth, for the
radio was still dead. But the fleet turned for Venus at once. They were
far to one side of the path to Venus, and they would have to turn, but
it would take them thirty, instead of sixty hours to reach Venus. And
the other fleet was coming from Earth. They were not quite a million
strong, but those machines that had been produced on Venus would come
also, and that would bring the total numbers up to over a million, and
with the main fleet the number would be well over two million. There
were also three hundred of the long range Dis ray ships now, for many
more had been produced and Venus would supply an equal number.

       *       *       *       *       *

We can only admire the wise action of the Commandant of the Venerian
fleet, Mals Hotark, in not sending his pitiful fleet of a few thousand
out to fight with the Sirians. The members wanted to, the people of
Venus wanted him to, but he wisely waited until he saw the fleets of
the System approaching. It would have done no good, and lost many
lives, and valuable ships to have gone in advance to the attack.

Many people tried to leave Venus, but enough machines were freed of the
task of stopping the orbital motion of the planet to patrol the heavens
and keep the people from leaving. They beamed thousands of private cars
out of existence; it seemed unnecessarily cruel.

The two great fleets were drawing nearer to the planet, converging,
and at last they got so close that they could carry on a radio
communication by using the terrific power of over two billion kilowatts
of energy. The amount of power that Sirian machine was throwing off has
been estimated at a minimum of fifty billion kilowatts. We know that
enough power could be picked up from a hundred meter aerial on Earth to
operate a small, high frequency motor.

When radio communication was established, they agreed to wait until
they could join, for the fleet from Earth was two hours ahead of the
main fleet. The loss of time was made up for in greater efficiency of
action. They would need it all. At last they joined fleets, one mighty
disc of two million airships, they flew on through space at a steady
rate of five and three-quarter million miles an hour. They arranged
themselves in a mighty cone as they came nearer Venus. Already the
machines had slowed it down so greatly that the planet was over a
million miles out of her orbit, and rapidly adding to this mileage.

But now as the great cone approached, the great ships with the long
range Dis rays leading, they were discovered. The cone formation
was chosen, for that is the three dimensional equivalent of the two
dimensional V that man had used in war on earth for thousands of years.

Now began the greatest battle in the history of the System. Here were
two mighty forces slashing at each other with terrific disintegration
rays, fighting in the great Void, and five million powerful ships
darting around, slashing, stabbing with a death that struck with the
quickness of light.

As the great cone of the main fleet attacked from one side, there was a
smaller cone attacking the Sirians from the other, but long before the
Sirians could bring their rays into effect the long range rays had torn
great holes in their ranks. The Sphere had retired with its escort at
once, going swiftly to Mars. The main fleet was too busily engaged in
fighting the Sirians' main fleet to worry about the Sphere at present.

A dozen times the great spinning sphere formation was tried by the
Sirians, but each time a withering blast of the long range Dis ray
cut it up as a tool held against a spinning block of wood cuts it
down in the lathe. Their strongest formation was useless, and they
could no longer outmaneuver the Solarians, the new ships could turn
and dart as quickly as they, or even more quickly. The big Dis ray
ships were not equipped for fast fighting, so when there were none of
the spinning sphere formations to break up, they retired to a safe
distance, and waited for any ships that might attack them. Few did. It
proved suicidal. But steadily the forces of man were conquering. In a
hell of flashing Dis rays, the new ships were proving their worth. The
flaming rays had seared the land below for many miles, but the fleet of
the Sirians was fast going. The new fast ships of man could dodge the
rays of the Sirians, turn and dart on the tail of their attacker, then
hang there, the attractor beam giving them an added grip until they
could flash the machine into nothingness with the Dis ray. They turned,
ducked, darted ahead with terrific speed, suddenly stopped, and then
were going full speed again. And another Sirian ship was gone. Now it
was the delicate apparatus of the Sirians' ships that suffered; they
could not keep up with the sudden turns of this flexible adversary. And
their great fleet had been reduced to a scant quarter million, but we
had lost nearly a half million ships, five million men, in that Titanic
struggle. Such a battle could not last long. It was impossible. Nothing
could stand before the Dis rays, and with those turning, darting ships,
sooner or later every ship must come under the influence of those
rays. But now the last of the torpedo-ships were fleeing into space.
But we did not care to have to fight them again--and they too were
rayed out of being. They could no longer dart away from us before we
could catch them--that was for us now!

But now the fleet returned to a greater task. Venus had been falling
toward the sun, and was nearly a million and a quarter miles off and
within her orbit. Now a great fleet of cargo carriers from Mars,
Venus and Earth came up, and with them came wrecker ships, capable of
picking up on their powerful attractor beams an entire million-ton
passenger-freight liner--great liners themselves, all equipped with
attractor beams. Soon they were all using their power to bring the
planet back to its normal speed. It did not take the ships of that
mighty fleet, many specially designed for heavy listing and towing,
many designed for tremendous loads, very long to bring the planet back
to its age-old orbit.

In former days we would have found a world wrecked by panic. But this
later generation had learned to trust in the powers of the ships they
had, and there had been little of the terrible panic that would have
affected the world of a generation ago. Then, too, they knew that with
the demonstrated power of the long range Dis rays, they could safely
convoy a fleet of the great passenger liners to safety.

What helped also was the fact that the human mind cannot grasp the
full significance of the fall into the sun. If you were told that the
planet you were on was sinking toward the sun, you would be surprised,
horrified, and would probably try to make a bargain-buy on real estate,
while the other man sold his to get his money out. You would simply
fail to comprehend the magnitude of the catastrophe. It has never
happened, and never will, the mind says, and we unconsciously believe
it. Your neighbor would joke about it to you. Of course many would
leave, but most people would stay till the actual physical heat of the
sun drove them off. We are constituted that way.

But now the radio barrier was down, and news from the Martian scouts
made men hesitate. The remaining cargo ships had settled on Mars and
were even now pouring out their strange crews. But they were not
building cargo ships. Every one of the worker machines were kept in
action constructing duplicates of themselves as rapidly as possible.
Already a great number of them had been made--over seven hundred of the
machines it was estimated--and now these were engaged in similar work.
The number grew in a steady geometrical series.

But the scouts were driven away by the torpedo-ships. Then there was no
news of the operations until nightfall permitted the scouts to creep up
and install the usual floating vision machines.

Then at last we understood the reason for this tremendous number of
inoffensive worker machines. There was a great seething mass of metal
around the workings now. Great blazing lights illuminated the scene
as brightly as day. There was a great horde of shining metal machines
working swiftly about the great plain. There seemed to be thousands
of them now, and they were all busily at work on great machines--the
torpedo-ship machines! There must have been nearly a thousand already
completed and already the fleet that had escaped had been built up to
many thousands by the rapidly working machines, and a steady stream of
long glistening shapes rose--only to be lost in the darkness beyond.
Steadily the great machines were being put together, and steadily the
great fleet was being augmented.

Before morning that fleet had reached two hundred thousand, and was
now growing at the rate of twenty-five thousand an hour. Steadily this
rate was increasing. The fleet was too large to be attacked by man's
weakened fleet, for the delay in putting Venus back in its orbit had
given the Sirians a chance to build up an invulnerable fleet. The
added time of the trip to Mars meant a still greater fleet. Already
their production-rate was far greater than Man's. Man could not hope
to compete successfully. We were learning the meaning of quantity
production.

Had it been possible to attack them with the long range Dis rays it
would have been tried, but the plan was hopeless. Before the fleet
could reach them there would be 100,000,000 miles to go to reach them,
and it would take approximately twenty hours, in which time, at the
present rate of increase, the Sirian fleet would have reached a total
of three million again. They would all concentrate their attack on
the long range Dis ray ships. No Solarian ships could help without
interfering with the action of the Dis ray ships, and they would need
help, for each ship carried only two beams. More could not be carried.
They would merely be held at bay, unable to attack their goal, useful
only in breaking up the spinning sphere formation, but that could be
prevented. The Solarians had learned that trick from the Sirians. The
Sirians had succeeded in breaking up every spinning column formation by
simply getting into the midst of it before it was formed completely.
It required perfect coordination of several machines to do it, but
it was always done. The long range Dis rays were excellent now in
defending a city, but useless for attack because of the terrific weight
of the apparatus. They could not attack the Sirian fleet. If they did
the production machines would have been so built up by the time they
reached the planet that any ordinary rate of destruction would be
easily equaled by the production! Within three days it was decided that
the Sirian fleet would be built up enough to attack. They would then
attack our planets, no doubt.

       *       *       *       *       *

A cabinet meeting was called at the Waterson laboratories on Earth.
There Waterson first demonstrated the weapon that finally conquered in
the terrific struggle. Before the members, on the Cabinet table, was a
small portable material energy disintegrator, a machine that gave off
its energy as light. There was a second machine at the other end of
the table, a machine that occupied about two cubic feet of space, and
on one side of it was a small switch and a dial; on the other was a
familiar looking projector.

Dr. Waterson spoke:

"Gentlemen of the Cabinet: I have here a new machine that my laboratory
has developed. I will demonstrate its action first." The light was
switched on, throwing a brilliant shaft of light against the ceiling.
Then Waterson snapped on the switch of the new machine, and there
appeared a strange beam of blueish, ionized air. But unlike any other
known ionizing beam, it was shot through with streamers of red fire,
long, hair-thin streamers that wavered and flickered in the blue tube
of the ionized air. It reached out, touched the light generator, and
passed on, through a series of plates of different materials. But the
instant that strange beam struck the light-machine, it went out. Then
a moment later, when the new machine was turned off, the light snapped
back on.

"Gentlemen, this machine will produce a field, directional in this
case, that will so modify the properties of space as to make it utterly
impossible to disintegrate matter into energy. There is some tendency
to fix energy as matter. I think that will be interesting to us in
the event that this war is successfully concluded. But at present we
are interested in the properties of the beam in that it will stop the
disintegration of matter. The process depends on the modification of
the properties of space. It is well known that in ordinary space, such
as we know, there are twenty coefficients of curvature. In ordinary
empty space, ten of these have zero values, and the ten principal
coefficients have certain non-zero values. This machine so affects
space that it makes all the coefficients of space have non-zero values,
and fixes these values to suit its own purposes. The results are
amazing. I have done some things with this machine that makes me truly
afraid. But we are interested in it because certain of the values we
can assign operate to force space to take such curvatures, that any
change of the condition of matter to condition of energy is impossible.
On release of the ray, the space returns to its normal curvature.

"Working out the theory of this machine has been a tremendous task.
Even the great calculating machine, the new integraph developed last
year, and it is a far cry from that first one that M.I.T. developed
in 1927, required many weeks of work to solve the problem in twenty
coefficients of space. In so doing at one stage we had to assume a
space of twenty dimensions in order that the correct values in the four
true dimensions might be determined.

"But there is still a great deal of work to be done. We must develop
practical machines of a range of many miles. There is no difficulty in
using the ray, since, as it is a condition of space, not a vibration,
it is impossible to stop it by any shield. There is only one way
to work with it, to create it directionally. We make the field by
projecting certain strains along a beam, then once started the field
follows that line to a distance dependent on the strength of the
generator.

"But this will require at least five days to get into working form. I
suggest that in the meantime Venus makes several million of the long
range Dis ray projectors, and distribute them all over the planet, to
be turned on from a central station, or by their own separate crews. I
have no doubt that the Sirians will attack that planet before we are
ready to attack them. Earth, too, must be prepared. But in the meantime
we can begin the work on the new de-activating field projectors, as I
call them."

Waterson was right. It was three days later that the Sirian fleet
left for Venus with a number of torpedo-ships so tremendous, it is
absolutely inconceivable. There were over two hundred million of the
ten-man machines! When they started to settle about Venus, the sky was
so filled with them that it was literally dark for many miles. They
attacked at Horacoles the System Capital, but the fields of the great
Dis rays were too much for them. Neither bombs nor Dis rays could
reach through. The air was dense, and filled with artificial smoke to
prevent the transmission of heat rays and great winds were created for
the purpose of carrying the heat away; but this was done automatically
by the expanding air before long. They could not attack the city. All
over the face of the planet were the great Dis ray emplacements. Great
ships hung even over the great rolling oceans, sending the blue rays of
ionized air up like some column that was to hold the Sirians from the
Planet. And they did.

But now again they began to slow down the planet--not gently as they
had had to before--but rapidly. The planet would have been pulled to
pieces, except that the very attractor beams that were pulling on it
tended to relieve the stress. But the cargo ships of Venus were pulling
to keep the planet in motion. It was a strange thing to contemplate!
Two mighty forces, one a fleet of two hundred million small ships,
the other a force of as many thousand huge freight carriers, having a
tug-o-war for a planet! But the odds were too great. Slowly the Sirians
won. The planet was steadily dropping toward the sun. Now it seemed no
fleet could come to aid them, and the Sirian fleet was being augmented
constantly by a steady stream of ships from Mars. It was the sixth
day after the announcement was made that Waterson had a fleet ready
to attack the Sirians. The Venerians also had a fleet ready, prepared
by the directions of Waterson's engineers sent by radio-television
and radiophone. They were ready to attack, and the Terrestrian fleet
arrived at Venus just six days after the announcement of the new weapon.

The practical projector of this new ray had been quite heavy, and they
had been mounted in groups of twenty projectors on special hundred-man
ships, using the same acceleration neutralizer used on the ten-man
ships. They were arranged to throw a wide beam, so wide that the new
ships with twenty, could prevent any action in a field of over two
hundred miles depth, and in a cone with a base of six hundred miles
diameter. The ships they had could approach within a hundred miles
of the Sirian fleet, without being seen, for they were painted black
therefore and showed no lights. In the darkness of the void they were
easily hidden.

       *       *       *       *       *

The entire expedition went as planned. The radio barrage had not been
turned on, and they were in constant communication with the Venerians.
The two fleets were to attack simultaneously, over different areas, so
that between them they could wipe out so large a number of the enemy
ships that the fleet of two million could easily handle the task.

Hidden in the utter dark of the void they crept up on the Sirians.
They were in the sunlight, but the black coating kept them invisible,
while the Sirian ships shone brilliantly. Then at last the tip of the
great cone formation was within easy striking distance of the fleet.
There reached out the strange ray, and here in space it was utterly
invisible. But suddenly the ships within its range began to waver, to
fall together under mutual gravitation. With one swoop they all shot
toward the ships in space that had paralyzed them, for the attractor
beams had been turned on them. As the great mass of ships fell rapidly
toward them, long range Dis rays reached out, and they melted into
clouds of shimmering dust. Great swaths were cut through their ranks. A
similar scene was taking place far to the left of the Terrestrian fleet
where the Venerian fleet was working havoc among the invaders. Now the
last of the ships had been rayed into nothingness and a great fleet of
the Sirians were rushing forward to attack for the ships invisible on
account of their black line had been electrostatically located now. But
as the Sirians came within one hundred miles of the other fleets, the
ships all ceased to accelerate, to change direction; they just drifted
straight into that cone of Dis rays. All walls of the de-activating
field were lined with the ten-man ships, their shorter range Dis rays
prevented any Sirians from escaping. Bright lights shone out on the
Solarian fleet now--they wanted the Sirians to attack. The original
cone formation had shifted rapidly; now it was a double cone; then it
changed to a quadruple cone. There were six hundred of the de-activator
ships and these were arranged so that they shot their rays off in four
directions, making four cones of de-activated space, with the fleet of
de-activator ships at the apex. Thus they were protected on all sides,
and quickly, as the Sirian fleet spread out, more ships rose and there
were six cones branching out. In the center rested the main mass of the
fleet, the long range Dis ships, their attractors pointing out into
the cones to draw the disabled ships of the Sirians into the range
of their Dis rays, emanating in thousands from the ships lining the
sides of the de-activated cones of space. The fleet was invulnerable
and so sudden and complete was the failure of their power in these
de-activated regions, that they did not seem to have time to warn their
fellows. Many millions of the ships were lost before the wild charge
could be checked; then the six-cone formation entire began to move
slowly around; the Sirians, waiting to see what was to happen, were
caught before they were aware that they were in danger. Many, too, were
caught by the powerful attractor beams of the heavy ships within--drawn
in by the greater power of the heavy ship, till their power failed. But
at last the Sirians had learned the effective range of this new power
and tried hard to avoid it. The six-cone formation was immediately
broken up, and the six hundred de-activators went out individually,
each followed by a swarm of the ten-man ships to disintegrate the
ships caught in the de-activating cones. The Terrestrian ships were
marked by a blazing blue light, so that if they too were caught in the
de-activating field, they were not disintegrated. Only those around
them were, and they were then released, as the ray did not seem to have
any injurious effects on man, except to give him strange dreams. In
some way the brain was stimulated by the ray, as long as the ray was
used.

The de-activator ships were completely self-protecting; they could stop
any number of attackers from any direction, provided the paralyzed
ships were disintegrated as soon as caught, for if too many were piled
up, the tendency of the matter to disintegrate in the engines, plus the
natural tendency of the space to resume the normal curvature, caused
the ray to become ineffective as it was overpowered, and one ship was
lost in this way. Too many ships piled up, and only part of them could
be rayed out by the ship itself, and there were not a sufficient number
of helping ten-man ships. But the mighty fleet of the Sirians was
already beaten. They still outnumbered us ten to one, but they could
not fight this new force. They began a running fight to Mars, and now
the Solarians were united. Rapidly they wiped out the edges of the
fleet, and gradually worked in toward the center. But the Sirians could
not fight back--they could use only the explosive shells, and few of
them reached their goal. They were disintegrated, or missed. Not more
than three thousand men were lost in that entire engagement.

But now the Solarians tried a plan to capture the Sphere. A large
number of the ten-man ships dropped out of the main fleet, but not
enough to make it noticeable to the hard-pressed Sirians. These were
joined by one hundred of the de-activator ships. Then these, all
capable of higher speeds than the main fleet, set out at the highest
speed that could safely be maintained, and darted toward Mars.
Undetected they rushed past the Sirian fleet and passed on toward Mars.
They reached the planet fully three hours ahead of the main fleet.
By the time the main fleet had arrived, it came unattended, for the
last of the mighty fleet of two hundred million torpedo-ships had been
turned to impalpable dust, floating in space.

The advance guard arrived without warning, and as they had expected,
found the Sphere resting on the ground, protected by a great fleet
of the torpedo-ships. There were nearly a million ships there, with
the great machines rapidly making more. However, all were grouped
in an area that could be covered by the cone of the de-activating
beam. And out in space, the ship commanders decided on a plan. Fifty
of the de-activator fleet took positions high above the Sirians, and
the rest went with the entire fleet of the ten-man ships. These were
to approach the camp from the ground. Lying close to the ground, they
would be hard to see in the disappearing light. At a fixed moment,
all the ships above were to turn on their de-activator rays, which
would be plainly visible in the Martian atmosphere, while the ground
fleet of fifty de-activators were to use their rays from the side. The
ten-man ships were to form a circle around the camp at a safe distance
from the de-activator rays, for they would crash when their power
failed, if they were caught by the de-activator rays. But they wanted
to capture the sphere in good condition, so they arranged to have the
space directly above it unaffected by the de-activator field, lest some
torpedo fall on it and destroy it. This would leave an exit for the
torpedo-ships, except that at a point a mile or so above the Sphere, a
cross-ray made escape impossible.

The rays were turned on. Instantly the fleet of nearly a million
torpedo-ships fell wildly out of control, down through the blue glowing
air, in which great streamers of glowing red seemed to waver and twist.
Just outside the curtain of destruction waited the entire Solarian
fleet. Slowly they closed in till their Dis rays swept all the ships
within sixty miles of the edge out of existence; then rapidly the
de-activator beams were forced ever sharper and sharper, till at last
only the Sphere and a few hundred of the torpedo-ships, several hundred
of the torpedo-ship constructors, and the corresponding cargo ships and
worker machines were left. These had been saved for investigation by
the scientists, for they were helpless.

But the war was over now. The Sirians had been destroyed, or reduced to
mere museum pieces. Now the Scientists came to investigate the Sphere.
There was much we wanted to learn from the creatures of the Sphere. But
it was a strange story that the Sirian sphere had to tell.

       *       *       *       *       *

Aeons ago there lived on a great planet of Sirius a race of intelligent
men, shaped as we are, but smaller due to the greater gravity of their
planet. And these men had developed a high civilization, a civilization
different from ours, in that they learned early about mechanics, but
chemistry and physics merely developed from the needs of the great
mechanical engineers. Electricity was used as a powerful aid in their
machines, and in their processes; it was a by-product, not an end.

Gradually their machines eliminated more and more of their work; they
became more and more complicated, but more and more trustworthy. Men
began to experiment with physics and found that their calculating
machines needed development. It was easy to add first one step, then
the next. More and more the machines could do. The mathematics became
more and more complicated, and the machines developed the equations,
found they could not handle them and passed them out as unfinished
results. Finally one man used the machines to calculate the design
of a machine that would be able to do these new equations. He built
it, but the calculations were wrong. The machine had correctly solved
his problem, but he had stated it wrong. It resulted in a machine
that would solve only simple problems, but it did something no other
machine had ever done. Given irrelevant data it would choose the
correct facts and solve the problem. It was a step, a short step toward
a machine that really thought.

Progress thereafter was rapid. The machines built machines, had been
doing it for decades in fact, but now they did one thing more--they
designed them. Now the problem could describe the type of machine
needed, and the worker machine would design it, and turn out the
completed machine! But these machines were rapidly perfecting the
beginning that man had made. Within a decade after that first discovery
of the principles of mechanical thought the machine was made that
could not only solve problems, but could also originate them. They had
developed a brain. It was a great machine, which occupied an entire
building, with its massive framework bolted down to the ground.

Man began a rapid decline, for the machines did all his work. With the
construction of a machine that could originate a problem, man made
a mistake. He had created a machine that was more powerful than he,
except that it was immobile. And this machine originated a new machine,
a machine that would release the energy of matter! It had developed
this because it had been able to see that such energy existed. Man's
machines could have solved it long ago, but the problem had never been
stated. Now came a machine that could state its own problems--and solve
them.

And with this new energy it designed a new brain-machine. A brain
machine such as no man's brain could conceive--a machine that could
move! For it was powered by the energy of matter, and could move as no
other machine had ever moved before--out into space!

Still the machines worked for the Sirian man, and he learned of the new
discovery, and began to design a new brain-machine.

Some of the Sirians realized the danger that was facing them, and
they had continued long researches on man's brain, and at last had
discovered the secret of giving a machine that emotion we call
devotion, loyalty, or gratitude. And they built a great machine on
that principle and used material energy to power it. It was a success.
It could think original thoughts. It pointed out the danger of the
existing machines--they were stronger than man. It was only man's
mobility and ability to control all mobile machines that had made him
superior, for a brain without a tool, or body is helpless. And now that
was lost. The existing brain-machines should be destroyed, and new ones
built, using the principles that it was designed on.

But the mischief was done. The new brain-machine, designed by a
machine, had done it. A machine had been built that was controlled by
thoughts, a machine that could be controlled by the machines. Each of
these machines was given a small brain, equipped with televisor sight
and hearing, and it was powered by material energy. They could run for
years without outside care, for the thinking machinery they had was
sufficient to keep them oiled, and to make them seek repairs when they
were damaged. They were susceptible to thought forces, and did as the
thought waves suggested and reported to the control brain exactly what
was going on about it.

And now this new brain developed a space-flyer to carry these machines,
and man could not help knowing, for its every thought was recorded,
for man's use. Then one day this record was found destroyed. The next
day the brain-machine had left the planet, and taken with it the new
space-flyer and the new telepathically controlled machines.

To the outermost planet of the System of Sirius the great machine fled.
For years it remained there waiting, thinking. Then at last it called
its worker machines into action. A new machine grew up from the stores
of metal that the space ship had brought with it, at last the metal
was used up, and the machine was not completed, so the space-flyer
was sacrificed for the completion of the machine. The new machine was
started. From its lip-like spout there poured a steady smooth stream of
molten metal, and the rock on which it rested was eaten away. The first
transmuting metal producer was made.

Decades passed, and only a small percentage of man developed. The
rest sank deeper and deeper into a life of ease. The planets were all
explored by the hardy ones, and no trace of the brain-machine was
ever found, for it had discovered the Dis ray, and sunk deep into the
ground, hollowing a great cave to live and work in.

       *       *       *       *       *

But back on that planet, the scientists had developed machines that
surpassed it in power, and finally one of these picked up a thought
message from that distant machine that told its story. It was a thought
that had not been consciously radiated, only the marvelous sensitivity
of this new machine could have detected it, but now the men knew. It
was too late to do much to prevent it, for they had no weapons. But the
machine did. It was preparing to drive man from the planets, to rule
there in his stead, with a population of machines!

The scientists quickly built a great space-flyer, a gigantic machine of
over ten miles diameter, a huge sphere. And in that they established
laboratories, workshops, machines, and living quarters. They took
with them the finest men and women of their race, and sailed out into
space, taking an orbit about the sun of Sirius. They were comfortable
there in an equitable temperature, their ship lighted by the sun on
one side, and dark on the other, steadily revolving on its axis like
a miniature world. The foods of the people were chemically prepared,
for the brain-machines had taught them how. The air was repurified
constantly by machines that regulated the percentage of the gases to
the thousandth of one per cent. But the entire ship was painted black.
It could not be discovered floating there in space, so tiny in the
vastness of a system!

It was two weeks after they sailed that the machine-brain attacked. It
sailed out of its hiding place with thousands of great ships, armed
with Dis rays and with explosives, with heat rays and attractor beams.
The population of those worlds was wiped out in a week, and the rule of
the Metal Horde began.

The original brain built other brain-machines to direct its affairs on
other planets, and to do the work it did not wish to do itself.

For nearly a century those men lived in space, making swift forays on
a planet with a fleet of cargo ships, that revolved about the main
ship like satellites when they were not being used. In these trips
they would bring back tons of rock, and leave most of it stored in the
ships, dumping them into the reservoir of the parent ship when it was
needed.

Then a swift ship was developed. A ship that could start and stop more
quickly than any made before--a ship with acceleration neutralizers.
But the machine brains of the Metal Horde never learned the secret.
With a small fleet of these, the men drove an attack at the unprotected
main brain-machine. There were no men known to live in the system.
No other known machine could move without the knowledge of that main
machine, but these could. They too had the Dis ray now, and they
destroyed the main brain-machine. They were lost in the ensuing fight,
but that machine was destroyed.

All the remaining machines were equally powerful. Any one of them could
have built a brain-machine that could easily conquer the others--but it
too would have to bow to its creator. They fought it out. The men had
known this would be the result.

It was a war such as the system had never before seen. Each force was
equal, and could not ally itself with any other, for the machines could
not lie or state other than their thoughts, and each wanted supreme
power. They developed new weapons, weapons whose strength lay in their
number. One by one the machine brains had gone down to defeat, the
men of that ship helping to disturb the balance of forces by ever so
little, yet always enough to throw one side down to defeat, yet always
remaining in hiding. At last there remained but one machine-brain, and
its weakened force necessitated its return to the devastated planet.
With the destruction of the other brain-machines, the remaining
machines that they had previously controlled, automatically obeyed the
new master as perfectly as they did the old.

They returned to find a new fleet awaiting them. But it was not a vast
fleet such as they had encountered before. At once the torpedo-ship
machines settled to the ground and began turning out their weapons. But
it was all over before they could enter as an important factor. These
ships had a new weapon. It was a ball of glowing blue light that was
driven along a beam of some vibration, and as it touched any ship, the
ship instantly volatized so suddenly as to constitute an explosion. The
balls of light lasted about a minute and a half each, but were replaced
as quickly as they were used. When they were finally used, they would
die down to a dull red glow, then suddenly wink out. They could be
swept from one ship to another, taking toll of ten or twelve ships
each, and the beam that guided them could drive them with the speed of
light and supply an infinite acceleration. They were glowing balls of
concentrated energy of some sort, and as such could travel with the
speed of light.

But they were effective to the _nth_ degree. The entire fleet of that
one remaining brain-machine would have been lost, but it retired into
space, racing away at top speed, out into space, with the remaining
remnant of its great fleet.

And sixteen hundred years it had raced across space, to be destroyed
at last by another race of men. The battle was over, and the machine
awaited its destruction.

We rayed it out of existence. It was too great a menace to keep.

Some people still do not believe that those Sirians were truly
machines. They can not believe that a machine can have intelligence,
but certainly Waterson's calculating machine has intelligence of a
sort. And they ask, what would a machine want to exist for? It would
have no aim, nothing to perform. Why should it want to live, or exist?

We might ask what it is human beings want to live for. If there is an
after-life, it is certainly not that that we live for. I am sure no man
wants to die. Yet what aim have we? What function must we perform? Why
should we wish to live? Our life is a constant struggle, the machines,
at least, had eliminated that. There seems to me no reason why a
machine should want to live, but certainly it has less reason to pass
out of existence than we have!

That war was destructive--terribly so. But it has brought its
compensations. More than fifteen million human beings lost their lives
in that great struggle, either in the battles in space, or caught in
the Dis rays during that battle on Venus.

But those fifteen millions have died a painless death, and twenty
billions live because of their sacrifice. And it was not a vain
sacrifice. We have learned much in return. No machines man ever made
equaled the machines we captured there on Mars. And man will never
experiment on the lines of the machine-brain. He has been warned. The
brain-machine we captured was destroyed without investigation. The
machines we use, the wonderful worker machines, have been modified to
permit of radio control.

And Stephen Waterson's discovery of the de-activating field not
only helps in law enforcement, but makes war with material energy
impossible. No, in all, we have lost little.

Mars lost its cities, its forests, its ancient civilization. New cities
are being built on the modern plan, larger, finer, more beautiful;
the forests are being replaced; but the records, the relics of a
civilization have been lost forever. In that we have lost much. Though
all moveable things were moved when the warning came, there was much
that could not be moved. The great palace of Horlak San was destroyed,
but it is being rebuilt in the exact spot, in exactly the same manner.
It is a worth-while project, but there is much which cannot be restored.

It will be eleven more years before we will know whether we can
ever communicate with the Sirian men. The speed of light is too low
for rapid communication, and as the first signals were sent out in
September, 1961, and it is now September, 1968, the signals are not due
to reach Sirius for two years more. Then it will be 1979 before we can
hope to receive their reply. I often wonder if they will ever get those
signals. I can remember distinctly the recoil of the great projector as
the mighty surges of light flashed out across the universe. It seemed
like some great gun--the back pressure of the light was so great. And
what will those replies tell us? It is interesting to speculate on that
subject.


                                The End





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