Analysis of the Sexual Impulse

_{Evidence in Support of this Theory Inadequate--The Sexual Impulse to Some Extent Independent of the Sexual Glands--The Sexual Impulse in Castrated Animals and Men--The Sexual Impulse in Castrated Women, After the Menopause, and in the Congenital Absence of the Sexual Glands--The Internal Secretions--Analogy between the Sexual Relationship and that of the Suckling Mother and her Child--The Theory of the Sexual Impulse as a Reproductive Impulse--This Theory Untenable--Moll's Definition--The Impulse of Detumescence--The Impulse of Contrectation--Modification of this Theory Proposed--Its Relation to Darwin's Sexual Selection--The Essential Element in Darwin's Conception--Summary of the History of the Doctrine of Sexual Selection. Its Psychological Aspect--Sexual Selection a Part of Natural Selection--The Fundamental Importance of Tumescence--Illustrated by the Phenomena of Courtship in Animals and in Man--The Object of Courtship is to Produce Sexual Tumescence--The Primitive Significance of Dancing in Animals and Man--Dancing is a Potent Agent for Producing Tumescence--The Element of Truth in the Comparison of the Sexual Impulse with an Evacuation, Especially of the Bladder--Both Essentially Involve Nervous Explosions--Their Intimate and Sometimes Vicarious Relationships--Analogy between Coitus and Epilepsy--Analogy of}