urther, that the exercise of the skin in this way on
one side of the body not only made that locality more sensitive to
minute differences, but had the same effect, singularly, on the
corresponding place on the other side of the body. This, our
experimenters inferred, could only be due to the continued suggestion
in the mind of the subject that he should feel two points, the result
being an actual heightening of the sensibility of the skin. When he
thought that he was becoming more sensitive on one side--and really
was--this sense or belief of his took effect in some way in both
hemispheres of his brain, and so both sides of the body were alike
affected.

[Footnote 10: G. A. Tawney, now professor in Beloit College, and C. W.
Hodge, now professor in Lafayette College.]

This led to other experiments in Princeton in which suggestions were
actually made to the subjects that they were to become more or less
sensitive to distance and direction between the points on the skin,
with the striking result that these suggestions actually took effect
all over the body. This was so accurately determined that from the
results of the experiments with the compasses on the skin in this case
or that, pretty accurate inferences could be made as to what mental
suggestions the subject was getting at the time. There was no chance
for deception in the results, for the experiments were so controlled
that the subject did not know until afterward of the correspondences
actually reached between his states of mind and the variations in
sensibility of the skin.

This slight report of the work done in one laboratory in about two
sessions, involving a considerable variety of topics, may give an
idea, so far as it goes, of the sort of work which experimental
psychology is setting itself to do. It will be seen that there is as
yet no well-knit body of results on which new experiments may proceed,
and no developed set of experimental arrangements, such as other
positive sciences show. The procedure is, in many important matters,
still a matter of the individual worker's judgment and ability. Even
for the demonstrations attempted for undergraduate students, good and
cheap apparatus is still lacking. For these reasons it is premature as
yet to expect that this branch of the science will cut much of a
figure in education. There can be no doubt, however, that it is making
many interesting contributions to our knowledge of the mind, and that
when it is mo