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(April) climax, and another still higher, late autumn (December)
climax. A very interesting point is the general resemblance of
the ecbolic curves to the Indian conception-curves as set forth
by Hill (_ante_ p. 140). The conception-curve is at its lowest
point in September, and at its highest point in December-January,
and this ecbolic curve follows it, except that both the minimum
and the maximum are reached a little earlier. When compared with
the English annual ecbolic curves (W.K. and Perry-Coste), both
spring and autumn maxima fall rather later, but all agree in
representing the autumn rise as the chief climax.
The annual curve of A.N. (_ante_ p. 117), who lives in Indiana,
U.S.A., also covers four years. It presents the usual spring
(May-June, in this case) and autumn (September-October) climaxes.
The exact monthly results, summated for the four years, are given
below; in order to allow for the irregular lengths of the months,
I have reduced them to daily averages, for convenience treating
the four years as one year:--
Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec.
13 9 13 20 23 22 20 20 21 23 9 16
.42 .32 .42 .66 .74 .73 .64 .64 .70 .74 .30 .52
In his book on _Adolescence_, Stanley Hall refers to three
ecbolic records in his possession, all made by men who were
doctors of philosophy, and all considering themselves normal. The
best of these records made by "a virtuous, active and able man,"
covered nearly eight years. Stanley Hall thus summarizes the
records, which are not presented in detail: "The best of these
records averages about three and a half such experiences per
month, the most frequent being 5.14 for July, and the least
frequent 2.28, for September, for all the years taken together.
There appears also a slight rise in April, and another in
November, with a fall in December." The frequency varies in the
different individuals. There was no tendency to a monthly cycle.
In the best case, the minimum number for the year was
thirty-seven, and the maximum, fifty. Fifty-nine per cent. of all
were at an interval of a week or less; forty per cent. at an
interval of from one to four days; thirty-four per cent, at an
interval of from eight to seventeen days, the longest being
forty-two days. Poor condition, overwork, and undersleep, led to
infrequency. Early morning was the most common time. Normally
there was a sense of distinct relief, but in low conditions, or
with over-frequency, depression. (G.S. Hall, _Adolescence_, vol.
i, p. 453.) I may add that an anonymous article on "Nocturnal
Emissions" (_American Journal of Psychology_, Jan., 1904) is
evidently a fuller presentation of the first of Stanley Hall's
three cases. It is the history of a healthy, unmarried, chaste
man, who kept a record of his nocturnal emissions (and their
accompanying dreams) from the age of thirty to thirty-eight. In
what American State he lived is not mentioned. He was ignorant of
the existence of any previous records. The yearly average was 37
to 50, remaining fairly constant; the monthly average was 3.43. I
reproduce the total results summated for the months, separately,
and I have worked out the daily average for each month, for
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