nding levels, but is not usually accompanied by the power
of seeing anything at a great distance or of reading either the past
or the future. It is hardly possible altogether to exclude these
latter faculties, for astral sight necessarily has considerably
greater extension than physical, and fragmentary pictures of both past
and future are often casually visible even to clairvoyants who do not
know how to seek specially for them; but there is nevertheless a very
real distinction between such incidental glimpses and the definite
power of projection of the sight either in space or time.

We find among sensitive people all degrees of this kind of
clairvoyance, from that of the man who gets a vague impression which
hardly deserves the name of sight at all, up to the full possession of
etheric and astral vision respectively. Perhaps the simplest method
will be for us to begin by describing what would be visible in the
case of this fuller development of the power, as the cases of its
partial possession will then be seen to fall naturally into their
places.

Let us take the etheric vision first. This consists simply, as has
already been said, in susceptibility to a far larger series of
physical vibrations than ordinary, but nevertheless its possession
brings into view a good deal to which the majority of the human race
still remains blind. Let us consider what changes its acquisition
produces in the aspect of familiar objects, animate and inanimate, and
then see to what entirely new factors it introduces us. But it must be
remembered that what I am about to describe is the result of the full
and perfectly-controlled possession of the faculty only, and that most
of the instances met with in real life will be likely to fall far
short of it in one direction or another.

The most striking change produced in the appearance of inanimate
objects by the acquisition of this faculty is that most of them become
almost transparent, owing to the difference in wave-length of some of
the vibrations to which the man has now become susceptible. He finds
himself capable of performing with the utmost ease the proverbial feat
of "seeing through a brick wall," for to his newly-acquired vision the
brick wall seems to have a consistency no greater than that of a
light mist. He therefore sees what is going on in an adjoining room
almost as though no intervening wall existed; he can describe with
accuracy the contents of a locked box, or read a sea