THE KEY OF THE MYSTERIES
CHAPTER III
MYSTERIES OF HALLUCINATIONS AND OF THE EVOCATION
OF SPIRITS
An hallucination is an illusion produced by an irregular
movement of the astral light.
It is, as we said previously, the admixture of the pheno-
mena of sleep with those of waking.
Our plastic medium breathes in and out the astral light or
vital soul of the earth, as our body breathes in and out the
terrestrial atmosphere. Now, just as in certain places the air
is impure and not fit for breathing, in the same way,
certain unusual circumstances may make the astral light
unwholesome, and not assimilable.
The air of some places may be too bracing for some
people, and suit others perfectly; it is exactly the same with
the magnetic light.
The plastic medium is like a metallic statue always in
a state of fusion. If the mould is defective, it becomes
deformed ; if the mould breaks, it runs out.
The mould of the plastic medium is balanced and polarized
vital force. Our body, by means of the nervous system,
attracts and retains this fugitive form of light; but local
fatigue, or partial over-excitement of the apparatus, may
occasion fluidic deformities.
These deformities partially falsify the mirror of the imagi-
nation, and thus occasion habitual hallucinations to the static
type of visionary.
The plastic medium, made in the image and likeness of our
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