Across the Zodiac Read Online Free PDF

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