much as I propose to say about the quaint
phenomena of Visualised Forms of numbers and of dates, and of
coloured associations with letters. I shall not extend my remarks to
such subjects as a musician hearing mental music, of which I have
many cases, nor to fancies concerning the other senses, as none of
these are so noteworthy. I am conscious that the reader may desire
even more assurance of the trustworthiness of the accounts I have
given than the space now at my disposal admits, or than I could
otherwise afford without wearisome iteration of the same tale, by
multiplying extracts from my large store of material. I feel, too,
that it may seem ungracious to many obliging correspondents not to
have made more evident use of what they have sent than my few and
brief notices permit. Still their end and mine will have been gained,
if these remarks and illustrations succeed in leaving a just
impression of the vast variety of mental constitution that exists in
the world, and how impossible it is for one man to lay his mind
strictly alongside that of another, except in the rare instances of
close hereditary resemblance.

VISIONARIES.

In the course of my inquiries into visual memory, I was greatly
struck by the frequency of the replies in which my informants
described themselves as subject to "visions." Those of whom I speak
were sane and healthy, but were subject notwithstanding to visual
presentations, for which they could not account, and which in a few
cases reached the level of hallucinations. This unexpected
prevalence of a visionary tendency among persons who form a part of
ordinary society seems to me suggestive and well worthy of being put
on record. The images described by different persons varied greatly
in distinctness, some were so faint and evanescent as to appear
unworthy of serious notice; others left a deep impression, and
others again were so vivid as actually to deceive the judgment. All
of these belong to the same category, and it is the assurance of
their common origin that affords justification for directing
scientific attention to what many may be inclined to contemptuously
disregard as the silly vagaries of vacant minds.

The lowest order of phenomena that admit of being classed as visions
are the "Number-Forms" to which I have just drawn attention. They
are in each case absolutely unchangable, except through a gradual
development in complexity. Their diversity is endless, and the
Number-Form