of results exhibiting the sexual
needs and sexual peculiarities of the male human animal in various
climates. Obviously, however, the records of any such students would be
worse than useless unless their care and accuracy, on the one hand, and
their habitual chastity, on the other, could be implicitly guaranteed.

FOOTNOTES:

[373] First published in the _University Magazine and Free Review_ of
February, 1898, and since reprinted as a pamphlet. A preliminary
communication appeared in _Nature_, May 14, 1891.

[374] [Later study (1906) has convinced me that my attempt to find a
lunar-monthly period in the female pulse was vitiated by a hopeless error:
for any monthly rhythm in a woman must be sought by arranging her records
according to her own menstrual month; and this menstrual month may vary in
different women, from considerably less than a lunar month to thirty days
or more.]

[375] I may add, however, that in my own case these discharges are--so far
as I can trust my waking consciousness--frequently, if not usually,
dreamless; and that strictly sexual dreams are extremely rare,
notwithstanding the possession of a strongly emotional temperament.

[376] If I can trust my memory, I first experienced this discharge when a
few months under fifteen years of age, and, if so, within a few weeks of
the time when I was, in an instant, suddenly struck with the thought that
possibly the religion in which I had been educated might be false. It is
curiously interesting that the advent of puberty should have been heralded
by this intellectual crisis.

[377] This unfortunate breach in the records was due to the fact that,
failing to discover any regularity in, or law of, the occurrences of the
discharges, I became discouraged and abandoned my records. In June, 1891,
a re-examination of my pulse-records having led to my discovery of a
lunar-monthly rhythm of the pulse, my interest in other physiological
periodicities was reawakened, and I recommenced my records of these
discharges.

[378] As a matter of fact, I take it that we may safely assert that no man
who is content to be guided by his own instinctive cravings, and who
neither suppresses these, on the one hand, nor endeavors to force himself,
on the other hand, will be in any danger of erring by either excess or the
contrary.

[379] [It is obvious that the opportunity of continuing such an inquiry as
that described in this Appendix, ceases with marriage; but I may add