ough a stone wall does not
seem so strange as it did before that discovery.

It is on power of supersensory, or extra-sensory perception that what is
known as telepathy and clairvoyance are based. That such things really
exist, and are not wholly a matter of superstition has been thoroughly
demonstrated in a scientific way by the British Society for Psychical
Research, and kindred societies in various parts of the world. Strictly
speaking, such phenomena as these are not a part of hypnotism, but our
study of hypnotism will enable us to understand them to some extent, and
the investigation of them is a natural corollary to the study of
hypnotism, for the reason that it has been found that these
extraordinary powers are often possessed by persons under hypnotic
influence. Until the discovery of hypnotism there was little to go on in
conducting a scientific investigation, because clairvoyance could not be
produced by any artificial means, and so could not be studied under
proper restrictive conditions.

We will first quote two experiments performed by Dr. Cocke which the
writer heard him describe with his own lips.

The first case was that of a girl suffering from hysterical tremor. The
doctor had hypnotized her for the cure of it, and accidentally stumbled
on an example of thought transference. She complained on one occasion of
a taste of spice in her mouth. As the doctor had been chewing some
spice, he at once guessed that this might be telepathy. Nothing was said
at the time, but the next time the girl was hypnotized, the doctor put a
quinine tablet in his mouth. The girl at once asked for water, and said
she had a very bitter taste in her mouth. The water was given her, and
the doctor went behind a screen, where he put cayenne pepper in his
mouth, severely burning himself. No one but the doctor knew of the
experiment at the time. The girl immediately cried and became so
hysterical that she had to be awakened. The burning in her mouth
disappeared as soon as she came out of the hypnotic state, but the
doctor continued to suffer. Nearly three hundred similar experiments
with thirty-six different subjects were tried by Dr. Cocke, and of these
sixty-nine were entirely successful. The others were doubtful or
complete failures.

The most remarkable of the experiments may be given in the doctor's own
words: "I told the subject to remain perfectly still for five minutes
and to relate to me at the end of this time any sensat