[119] Sanctorius, _Medicina Statica_, Sect. I, aph. lxv.
[120] _American Journal of Obstetrics_, xiv, 1882.
[121] _Zooenomia_, Section XXXVI.
[122] I reproduced these notes in full in earlier editions of this volume.
[123] Moll refers to the case of a man whose erotic dreams occurred every
fortnight, and always on Friday night (_Libido Sexualis_, Band I, p. 136).
One is inclined to suspect an element of autosuggestion in such a case;
still, the coincidence is noteworthy.
[124] See Durkheim, _Le Suicide_, p. 101.
[125] We must, of course, see here the results of the disorganization
produced by holidays, and the exhaustion produced by the week's labor; but
such influences are still the social effects of the cosmic week.
[126] E. Smith, _Health and Disease_, Chapter III. I may remark that,
according to Kemsoes (_Deutsche medizinische Wochenschrift_, January 20,
1908, and _British Medical Journal_, January 29, 1898), school-children
work best on Monday and Tuesday.
[127] See Appendix B.
III.
The Annual Sexual Rhythm--In Animals--In Man--Tendency of the Sexual
Impulse to become Heightened in Spring and Autumn--The Prevalence of
Seasonal Erotic Festivals--The Feast of Fools--The Easter and Midsummer
Bonfires--The Seasonal Variations in Birthrate--The Causes of those
Variations--The Typical Conception-rate Curve for Europe--The Seasonal
Periodicity of Seminal Emissions During Sleep--Original
Observations--Spring and Autumn the Chief Periods of Involuntary Sexual
Excitement--The Seasonal Periodicity of Rapes--Of Outbreaks among
Prisoners--The Seasonal Curves of Insanity and Suicide--The Growth of
Children According to Season--The Annual Curve of Bread-consumption in
Prisons--Seasonal Periodicity of Scarlet Fever--The Underlying Causes of
these Seasonal Phenomena.
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