electrical engineers is called "Syntony," which means
being tuned to the same rate of vibration, and no doubt it is from some
such cause, that we sometimes experience what seem inexplicable feelings
of attraction or repulsion towards different persons. This also appears
to furnish a key to thought-transference, hypnotism, and other allied
phenomena.

If the reader questions whether thought is capable of generating
impulses in the etheric medium I would refer him to the experiment
mentioned in Chapter XIV of my "Edinburgh Lectures on Mental Science,"
where I describe how, when operating with Dr. Baraduc's biometer, I
found that the needle revolved through a smaller or large arc of the
circle, in response to my mental intention of concentrating a smaller or
larger degree of force upon it. Perhaps you will say that the difference
in the movement of the needle depended on the quantity of magnetism that
was flowing from me, to say nothing of other known forces, such as heat,
light, electricity, etc. Well, that is precisely the proposition I am
putting forward. What caused the difference in the intensity of the
magnetic flow was my intention of varying it, so that we come back to
mental action as the centre of impulsion from which the etheric waves
were generated. If, then, such a demonstration can be obtained on the
plane of purely physical matter, why need we doubt that the same Law
will work in the same way, in respect of those finer modes of substance,
and wider ranges of etheric vibrations, which, starting from the basis
of recognized physical science, the Law of Continuity would lead to by
an orderly sequence, and which the occurrence of what, for want of a
better name, we call occult phenomena require for their explanation?

Before passing on to the more practical generalizations to be drawn from
the suggestions contained in this chapter, I may advert to an objection
sometimes brought by the sceptical in this matter. They say: "How is it
that apparitions are always seen in the dark?" and then they answer
their own question by saying, it is because superstitious people are
nervous in the dark and imagine all sorts of things. Then they laugh and
think they have disposed of the whole subject. But it is not disposed
of quite so easily, for not only are there many well attested cases of
such appearances in broad daylight, but there are also scientific facts,
showing that if we are right in explaining such happenings by eth