over the barrier of flesh separating two persons when such
persons are in immediate physical contact, and the conditions are of a
certain kind; but as a rule they do not do so. But, as all investigators
know, mental vibrations are capable of being transformed into some
subtle form of etheric vibrations, and the latter when coming in contact
with the nervous system of other persons may be again transformed, this
time into mental vibrations which produced thoughts, feelings and mental
images in the minds of the second persons or persons, corresponding with
these mental states in the first person. Think over this carefully,
until you grasp the idea fully.

Vibrational Attunement

And here we find another startling correspondence between the phenomena
of wireless telegraphy and that of thought transference or transmission
of mental vibrations. We allude to the fact that while a wireless
telegraphic sending instrument may be sending forth vibrations of the
strongest power, its messages are capable of being received or "picked
up" only by those instruments which are "in tune" with the sending
instrument to at least a certain degree; to all other instruments, those
which are not "in tune" with the sending instrument, there is no message
perceptible. Precisely this same state of affairs is found to prevail in
the realm of mental vibrations and thought transmission. The individual
receives only such messages as emanate from instruments with which he is
"in tune"--to all the rest he is deaf and unconscious. But once "in
tune" with the higher vibrations of the mental realm, he will receive
every message traveling on that particular plane at that particular
time, unless he deliberately shut them out. We shall see how this works
out in ordinary life, when we consider the general subject of Telepathy
and Thought Transference in the succeeding Chapter.

In Tune With Higher Planes

But, in connection with the above statement of the "in tune" law or rule
of manifestation, we wish to call to the attention of the student the
important fact that the same law prevails in the case of communications
from the higher planes of existence--the so-called "spirit
communications" and other messages of this kind reaching individuals on
our own plane of existence. It is only when the individual on the
"earth plane" becomes "in tune" with the sending mental instrument of
the entity abiding on a higher plane of existence, that it is able to
"pi