instance, transmit a strong current of electricity over a fine wire, or
filament of carbon, and lo! the current is transformed into light. Use
another kind of channel of transmission, and the current is transformed
into heat. Every electric light, or electric heating apparatus is proof
of this. In the same way, the electric current is sent into space in the
form of wireless waves. These waves coming in contact with certain forms
of apparatus are transformed into forms of force which are registered and
interpreted by the wireless operator.

In the same way, the telepathic waves of energy are sent forth by the
activity released by the thought or emotion state. These waves travel in
every direction, and when they come in contact with physical apparatus
sufficiently sensitive to register them, they may be reproduced or
retransformed into thought or mental states similar to those which
originally sent them forth. You talk into the receiver of the telephone,
and the sound waves are transformed into waves of electricity. These
electric waves travel over the wires, and on reaching the other end of the
telephone circuit are again transformed into sound-waves which are heard
by the ear of the listener. Well, then, when your brain sends out thought
waves, these travel until they are received by the apparatus in the brain
of another person, when they are re-transformed into thoughts of the same
kind that originally caused the thought-waves. I will have much more to
say on this subject in the next chapter. I will pause here to point out
the difference between the phenomena of this form of telepathy, and the
higher form which is really a phase of clairvoyance.

Now, in the case of what may be called a clairvoyant-telepathy, or astral
telepathy, the ordinary thought-waves play but a small part. Instead of
these, there is a transmission of force along the channels of the astral
plane. It is almost impossible to describe the phenomena of the astral