may, to a large extent, be made up of complexes. These complexes
may be very loosely organized in that the elementary ideas are weakly
bound together, in which case, when we try to recall the original
experience, only a part of it is recalled. Or a complex may be very
strongly organized, owing to the conditions under which it is formed,
and then a large part of the experience can be recalled. In this case,
any idea associated with some element in the complex may, by the law of
association, revive the whole original complex. If, for instance, we
have gone through a railroad accident involving exciting incidents, loss
of life, etc., the words "railroad," "accident," "death," or a sudden
crashing sound, or the sight of blood, or even riding in a railroad
train may recall the experience from beginning to end, or at least the
prominent features in it, i.e., so much as was organized. The memory of
the greater part of this experience is well organized, while the earlier
events and those succeeding the accident may have passed out of all
possibility of voluntary recall.

To take an instance commonplace enough but which happens to have just
come within my observation: A fireman was injured severely by being
thrown from a hose wagon rushing to a fire against a telegraph pole with
which the wagon collided. He narrowly escaped death. Although three
years have passed he still cannot ride on a wagon to a fire without the
memory of the whole accident rising in his mind. When he does so he
again lives through the accident, including the thoughts just previous
to the actual collision when, realizing his situation, he was overcome
with terror, and he again manifests all the organic physical expressions
of fear, viz.: perspiration, tremor, and muscular weakness. Here is a
well-organized and fairly limited complex.

Among the loosely organized complexes in many individuals, and possibly
in all of us, there are certain dispositions toward views of life which
represent natural inclinations, desires, and modes of activity which,
for one reason or another, we tend to suppress or are unable to give
full play to. Many individuals, for example, are compelled by the
exactions of their duties and responsibilities to lead serious lives, to
devote themselves to pursuits which demand all their energies and
thought and which, therefore, do not permit of indulgence in the lighter
enjoyments of life, and yet there may be a natural inclination to
partak