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 convenience counting the summated eight years as one year:—­

Jan.  Feb.  Mar.   Apr.  May  June  July  Aug.   Sept.   Oct.   Nov.   Dec.
27   27   27    31   29   28    36    25    18     27    30    24
.87  .94  .87  1.03  .93  .93  1.16   .81   .60    .87  1.00   .77

Here, as in all the other curves we have been able to consider, we may see the usual two points of climax in spring and in autumn; the major climax covers April, May, June, and July, the minor autumnal climax is confined to November.