ll not fail to reach its destination. I have fortunately
been able to demonstrate this fact in public on more than one
occasion. The phenomenon is repeated in a less striking
form in every case of what is called "crossing," as when one
correspondent feels suddenly called upon to write urgently to
another and receives a reply to his enquiries while his letter is
still in course of delivery.

Nature is full of a subtle magic of this sort for which we have no
organized science. It is said that if you put snails together and
afterwards separate them, placing each upon a copper ground to
which electric wires are attached, a shock given to one snail will
be registered by the other at the same moment. I have not tried
this theory, but the idea is fundamental to a mass of telepathic
observations which have found practical expression in wireless
telegraphy. Some thirty years ago, however, I made trial of the
twin magnet theory and was entirely successful in getting
wireless messages from one room to another. The performance
was, however, clumsy and tedious, and I did not then know
enough to see how it could be perfected. The idea is now in the
very safe custody of the Patents Office.

Community of taste can be demonstrated under hypnosis. It is not
otherwise usually active in sensitives, and Swedenborg was
hence of opinion that the sense of taste could not be obsessed.
This, however, is incorrect. I have illustrated community of all
the senses under hypnosis in circumstances which entirely
precluded the possibility of feint or imposition on the part of the
subject.

Another phase of psychic activity is that illustrated in "dowsing"
or water-finding by means of the hazel fork. It may be accounted
a form of hyperaesthesia and no doubt has a nervous expression,
but it is not the less psychic in its origin. I have already referred
to the action of water upon psychic sensitives, and there seems
little room for doubt that it is the psychometric sense which, by
means of the self-extensive faculty inhering in consciousness,
registers the presence of the great diamagnetic agent. Professor
Barrett has written a most interesting monograph on this subject,
and there are many books extant which make reference to and
give examples of this curious phenomenon. The late British
Consul at Trieste and famous explorer and linguist, Sir Richard
Burton, could detect the presence of a cat at a considerable
distance, and I have heard that Lord Ro