, who was requested to mentally see the arrow as it was
turned round. In these circumstances it was found that when the
arrow-head pointed to the right, it was read off as pointing to the
left, and so on. This led some to imagine that there was a mirage in
the inner as well as on the outer plane of optical sensation. But the
real explanation of the phenomenon lies deeper.

It is well known that an object as seen by us and its image on the
retina of the eye, are not exactly the same in position, but quite the
reverse. How the image of an object on the retina is inverted in
sensation, is a mystery which physical science is admittedly incapable
of solving. Western metaphysics, too, with regard to this point, hardly
fares any better; there are as many theories as there are
metaphysicians. The only philosopher who has obtained a glimpse of the
truth is the idealist Berkeley, who says that a child does really see a
thing inverted from our standpoint; to touch its head it stretches out
its hands in the same direction of its body as we do of ours to reach
our feet. Repeated failures give experience and lead to the correction
of the notions born of one sense by those derived through another; the
sensations of distance and solidity are produced in the same way.

The application of this knowledge to the above mentioned experiments of
the Psychic Research Society will lead to very suggestive results. If
the trained adept is a person who has developed all his interior
faculties, and is on the psychic plane in the full possession of his
senses, the individual, who accidentally, that is, without occult
training, gains the inner sight, is in the position of a helpless
child--a sport of the freaks of one isolated inner sense. Such was the
case with the sensitives with whom Mr. Myers and his colleagues
experimented. There are instances, however, when the correction of one
sense by another takes place involuntarily and accurate results are
brought out. When the sensitive reads the thoughts in a man's mind,
this correction is not required, for the will of the thinker shoots the
thoughts, as it were, straight into the mind of the sensitive. The
introversion under notice will, moreover, be found to take place only in
the instance of such images which cannot be corrected by the already
acquired sense-experience of the sensitive. A difficulty may here
suggest itself with regard to the names of persons or the words thought
of for