f mental perception of the
thoughts and intentions of those who are seen.

Since the man's consciousness is still in the physical body, he will
be able (even while exercising the faculty) to hear and to speak, in
so far as he can do this without any distraction of his attention. The
moment that the intentness of his thought fails the whole vision is
gone, and he will have to construct a fresh thought-form before he can
resume it. Instances in which this kind of sight is possessed with any
degree of perfection by untrained people are naturally rarer than in
the case of the previous type, because of the capacity for mental
control required, and the generally finer nature of the forces
employed.

4. _By travelling in the astral body._--We enter here upon an entirely
new variety of clairvoyance, in which the consciousness of the seer no
longer remains in or closely connected with his physical body, but is
definitely transferred to the scene which he is examining. Though it
has no doubt greater dangers for the untrained seer than either of the
methods previously described, it is yet quite the most satisfactory
form of clairvoyance open to him, for the immensely superior variety
which we shall consider under our fifth head is not available except
for specially trained students.

In this case the man's body is either asleep or in trance, and its
organs are consequently not available for use while the vision is
going on, so that all description of what is seen, and all questioning
as to further particulars, must be postponed until the wanderer
returns to this plane. On the other hand the sight is much fuller and
more perfect; the man hears as well as sees everything which passes
before him, and can move about freely at will within the very wide
limits of the astral plane. He can see and study at leisure all the
other inhabitants of that plane, so that the great world of the
nature-spirits (of which the traditional fairy-land is but a very
small part) lies open before him, and even that of some of the lower
devas.

He has also the immense advantage of being able to take part, as it
were, in the scenes which come before his eyes--of conversing at will
with these various astral entities, from whom so much information that
is curious and interesting may be obtained. If in addition he can
learn how to materialize himself (a matter of no great difficulty for
him when once the knack is acquired), he will be able to take part in