r such conditions?
If both subjects were hypnotized, and the agent were told to "will"
certain figures, etc., might not the percipient receive them more
easily? If both agent and percipient were placed in a strong magnetic or
high-tension electric field, might not this in some way influence
communication? Again, these are but a very few of the experiments which
might be tried, once telepathy became an accepted fact.

In the case of clairvoyance the field is even greater, but here more
original work has been done, owing largely to the fact that many of the
experiments have been conducted upon subjects in the hypnotic trance,
and hence more fully resembled "laboratory experiments." Still, much
remains to be done, particularly in the realm of the _explanation_ of
clairvoyance, and in the investigation of the neural and general
physiological concomitants of the condition.

In the field of "thought-" and "spirit-photography," the possibilities
of research and experimentation are obvious and almost unlimited. The
recent researches of Dr. Ochorowicz in "radiographs," and of Commandant
Darget in thought-photography and the so-called V-rays, are of extreme
importance, if true. Here is a field which any one may invade; and, with
the aid of a camera and specially sensitive plates, might accomplish
really valuable and striking results. Very rarely have attempts been
made to photograph apparitions (probably because they were too fleeting
and unexpected), and the forms at seances have been photographed on only
a few occasions. The human "aura"--granting it exists--should certainly
be capable of being photographed, under certain conditions, as well as
the radiation said to issue from magnets, crystals, etc., as explained
by Reichenbach.

The human "aura" itself should be made the subject of special study.
Here is a perfectly tangible thing, so to speak, which physicists can
work on to their hearts' content, without becoming "contaminated" by the
general run of psychic manifestations! Is the aura a form of physical
radiation? Does it affect the atmosphere? Can it be photographed? Is it
connected with the phenomena of exteriorization of sensitivity or
motivity? Will it affect the galvanometer needle, or other delicate
electrical or physical instruments? Is it connected with the "astral" or
"etheric body"? What is its condition when the subject is asleep? Can it
be altered at will? Is it affected by passing a high-tension current
thro