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.

AUTO-EROTISM: A STUDY OF THE SPONTANEOUS MANIFESTATIONS OF THE SEXUAL IMPULSE.