Across the Zodiac (4 page)

It was expedient, of course, to make my vessel as light as possible,
and, at the same time, as large as considerations of weight would
admit. But it was of paramount importance to have walls of great
thickness, in order to prevent the penetration of the outer cold of
space, or rather the outward passage into that intense cold of the
heat generated within the vessel itself, as well as to resist the
tremendous outward pressure of the air inside. Partly for these
reasons, and partly because its electric character makes it especially
capable of being rendered at will pervious or impervious to the
apergic current, I resolved to make the outer and inner walls of an
alloy of ..., while the space between should be filled up with a mass
of concrete or cement, in its nature less penetrable to heat than any
other substance which Nature has furnished or the wit of man
constructed from her materials. The materials of this cement and their
proportions were as follows.
[2]

Briefly, having determined to take advantage of the approaching
opposition of Mars in MDCCCXX ...
[3]
, I had my vessel constructed with
walls three feet thick, of which the outer six and the inner three
inches were formed of the metalloid. In shape my Astronaut somewhat
resembled the form of an antique Dutch East-Indiaman, being widest and
longest in a plane equidistant from floor and ceiling, the sides and
ends sloping outwards from the floor and again inwards towards the
roof. The deck and keel, however, were absolutely flat, and each one
hundred feet in length and fifty in breadth, the height of the vessel
being about twenty feet. In the centre of the floor and in that of the
roof respectively I placed a large lens of crystal, intended to act as
a window in the first instance, the lower to admit the rays of the
Sun, while through the upper I should discern the star towards which I
was steering. The floor, being much heavier than the rest of the
vessel, would naturally be turned downwards; that is, during the
greater part of the voyage towards the Sun. I placed a similar lens in
the centre of each of the four sides, with two plane windows of the
same material, one in the upper, the other in the lower half of the
wall, to enable me to discern any object in whatever direction. The
crystal in question consisted of ..., which, as those who manufactured
it for me are aware, admits of being cast with a perfection and
equality of structure throughout unattainable with ordinary glass, and
wrought to a certainty and accuracy of curvature which the most
patient and laborious polishing can hardly give to the lenses even of
moderate-sized telescopes, whether made of glass or metal, and is
singularly impervious to heat. I had so calculated the curvature that
several eye-pieces of different magnifying powers which I carried with
me might be adapted equally to any of the window lenses, and throw a
perfect image, magnified by 100, 1000, or 5000, upon mirrors properly
placed.

I carpeted the floor with several alternate layers of cork and cloth.
At one end I placed my couch, table, bookshelves, and other necessary
furniture, with all the stores needed for my voyage, and with a
further weight sufficient to preserve equilibrium. At the other I made
a garden with soil three feet deep and five feet in width, divided
into two parts so as to permit access to the windows. I filled each
garden closely with shrubs and flowering plants of the greatest
possible variety, partly to absorb animal waste, partly in the hope of
naturalising them elsewhere. Covering both with wire netting extending
from the roof to the floor, I filled the cages thus formed with a
variety of birds. In the centre of the vessel was the machinery,
occupying altogether a space of about thirty feet by twenty. The
larger portion of this area was, of course, taken up by the generator,
above which was the receptacle of the apergy. From this descended
right through the floor a conducting bar in an antapergic sheath, so
divided that without separating it from the upper portion the lower
might revolve in any direction through an angle of twenty minutes
(20'). This, of course, was intended to direct the stream of the
repulsive force against the Sun. The angle might have been extended to
thirty minutes, but that I deemed it inexpedient to rely upon a force,
directed against the outer portions of the Sun's disc, believing that
these are occupied by matter of density so small that it might afford
no sufficient base, so to speak, for the repulsive action. It was
obviously necessary also to repel or counteract the attraction of any
body which might come near me during the voyage. Again, in getting
free from the Earth's influence, I must be able to steer in any
direction and at any angle to the surface. For this purpose I placed
five smaller bars, passing through the roof and four sides, connected,
like the main conductor, with the receptacle or apergion, but so that
they could revolve through a much larger angle, and could at any
moment be detached and insulated. My steering apparatus consisted of a
table in which were three large circles. The midmost and left hand of
these were occupied by accurately polished plane mirrors. The central
circle, or metacompass, was divided by three hundred and sixty fine
lines, radiating from the centre to the circumference, marking as many
different directions, each deviating by one degree of arc from the
next. This mirror was to receive through the lens in the roof the
image of the star towards which I was steering. While this remained
stationary in the centre all was well. When it moved along any one of
the lines, the vessel was obviously deviating from her course in the
opposite direction; and, to recover the right course, the repellent
force must be caused to drive her in the direction in which the image
had moved. To accomplish this, a helm was attached to the lower
division of the main conductor, by which the latter could be made to
move at will in any direction within the limit of its rotation.
Controlling this helm was, in the open or steering circle on the right
hand, a small knob to be moved exactly parallel to the deviation of
the star in the mirror of the metacompass. The left-hand circle, or
discometer, was divided by nineteen hundred and twenty concentric
circles, equidistant from each other. The outermost, about twice as
far from the centre as from the external edge of the mirror, was
exactly equal to the Sun's circumference when presenting the largest
disc he ever shows to an observer on Earth. Each inner circle
corresponded to a diameter reduced by one second. By means of a
vernier or eye-piece, the diameter of the Sun could be read off the
discometer, and from his diameter my distance could be accurately
calculated. On the further side of the machinery was a chamber for the
decomposition of the carbonic acid, through which the air was driven
by a fan. This fan itself was worked by a horizontal wheel with two
projecting squares of antapergic metal, against each of which, as it
reached a certain point, a very small stream of repulsive force was
directed from the apergion, keeping the wheel in constant and rapid
motion. I had, of course, supplied myself with an ample store of
compressed vegetables, preserved meats, milk, tea, coffee, &c., and a
supply of water sufficient to last for double the period which the
voyage was expected to occupy; also a well-furnished tool-chest (with
wires, tubes, &c.). One of the lower windows was made just large
enough to admit my person, and after entering I had to close it and
fix it in its place firmly with cement, which, when I wished to quit
the vessel, would have again to be removed.

Of course some months were occupied in the manufacture of the
different portions of the vessel and her machinery, and sometime more
in their combination; so that when, at the end of July, I was ready to
start, the opposition was rapidly approaching. In the course of some
fifty days the Earth, moving in her orbit at a rate of about eleven
hundred miles
[4]
per minute, would overtake Mars; that is to say,
would pass between him and the Sun. In starting from the Earth I
should share this motion; I too should go eleven hundred miles a
minute in the same direction; but as I should travel along an orbit
constantly widening, the Earth would leave me behind. The apergy had
to make up for this, as well as to carry me some forty millions of
miles in a direction at right angles to the former—right outward
towards the orbit of Mars. Again, I should share the motion of that
particular spot of the Earth's surface from which I rose around her
axis, a motion varying with the latitude, greatest at the equator,
nothing at the pole. This would whirl me round and round the Earth at
the rate of a thousand miles an hour; of this I must, of course, get
rid as soon as possible. And when I should be rid of it, I meant to
start at first right upward; that is, straight away from the Sun and
in the plane of the ecliptic, which is not very different from that in
which Mars also moves. Therefore I should begin my effective ascent
from a point of the Earth as far as possible from the Sun; that is, on
the midnight meridian.

For the same reason which led me to start so long before the date of
the opposition, I resolved, having regard to the action of the Earth's
rotation on her axis, to start some hours before midnight. Taking
leave, then, of the two friends who had thus far assisted me, I
entered the Astronaut on the 1st August, about 4.30 P.M. After sealing
up the entrance-window, and ascertaining carefully that everything was
in order—a task which occupied me about an hour—I set the generator
to work; and when I had ascertained that the apergion was full, and
that the force was supplied at the required rate, I directed the whole
at first into the main conductor. After doing this I turned towards
the lower window on the west—or, as it was then, the right-hand
side—and was in time to catch sight of the trees on the hills, some
half mile off and about two hundred feet above the level of my
starting-point. I should have said that I had considerably compressed
my atmosphere and increased the proportion of oxygen by about ten per
cent., and also carried with me the means of reproducing the whole
amount of the latter in case of need. Among my instruments was a
pressure-gauge, so minutely divided that, with a movable vernier of
the same power as the fixed ones employed to read the glass circles, I
could discover the slightest escape of air in a very few seconds. The
pressure-gauge, however, remained immovable. Going close to the window
and looking out, I saw the Earth falling from me so fast that, within
five minutes after my departure, objects like trees and even houses
had become almost indistinguishable to the naked eye. I had half
expected to hear the whistling of the air as the vessel rushed upward,
but nothing of the kind was perceptible through her dense walls. It
was strange to observe the rapid rise of the sun from the westward.
Still more remarkable, on turning to the upper window, was the rapidly
blackening aspect of the sky. Suddenly everything disappeared except a
brilliant rainbow at some little distance—or perhaps I should rather
have said a halo of more than ordinary rainbow brilliancy, since it
occupied, not like the rainbows seen from below, something less than
half, but nearly two-thirds of a circle. I was, of course, aware that
I was passing through a cloud, and one of very unusual thickness. In a
few seconds, however, I was looking down upon its upper surface,
reflecting from a thousand broken masses of vapour at different
levels, from cavities and hillocks of mist, the light of the sun;
white beams mixed with innumerable rays of all colours in a confusion,
of indescribable brilliancy. I presume that the total obscuration of
everything outside the cloud during my passage through it was due to
its extent and not to its density, since at that height it could not
have been otherwise than exceedingly light and diffuse. Looking upward
through the eastern window, I could now discern a number of brighter
stars, and at nearly every moment fresh ones came into view on a
constantly darkening background. Looking downward to the west, where
alone the entire landscape lay in daylight, I presently discerned the
outline of shore and sea extending over a semicircle whose radius much
exceeded five hundred miles, implying that I was about thirty-five
miles from the sea-level. Even at this height the extent of my survey
was so great in comparison to my elevation, that a line drawn from the
vessel to the horizon was, though very roughly, almost parallel to the
surface; and the horizon therefore seemed to be not very far from my
own level, while the point below me, of course, appeared at a vast
distance. The appearance of the surface, therefore, was as if the
horizon had been, say, some thirty miles higher than the centre of the
semicircle bounding my view, and the area included in my prospect had
the form of a saucer or shallow bowl. But since the diameter of the
visible surface increases only as the square root of the height, this
appearance became less and less perceptible as I rose higher. It had
taken me twenty minutes to attain the elevation of thirty-five miles;
but my speed was, of course, constantly increasing, very much as the
speed of an object falling to the Earth from a great height increases;
and before ten more minutes had elapsed, I found myself surrounded by
a blackness nearly absolute, except in the direction of the
Sun,—which was still well above the sea—and immediately round the
terrestrial horizon, on which rested a ring of sunlit azure sky,
broken here and there by clouds. In every other direction I seemed to
be looking not merely upon a black or almost black sky, but into close
surrounding darkness. Amid this darkness, however, were visible
innumerable points of light, more or less brilliant—the stars—which
no longer seemed to be spangled over the surface of a distant vault,
but rather scattered immediately about me, nearer or farther to the
instinctive apprehension of the eye as they were brighter or fainter.
Scintillation there was none, except in the immediate vicinity of the
eastern horizon, where I still saw them through a dense atmosphere. In
short, before thirty minutes had elapsed since the start, I was
satisfied that I had passed entirely out of the atmosphere, and had
entered into the vacancy of space—if such a thing as vacant space
there be.