III.

The Prevalence of Masturbation--Its Occurrence in Infancy and Childhood--Is it More Frequent in Males or Females?--After Adolescence Apparently more Frequent in Women--Reasons for the Sexual Distribution of Masturbation--The Alleged Evils of Masturbation--Historical Sketch of the Views Held on This Point--The Symptoms and Results of Masturbation--Its Alleged Influence in Causing Eye Disorders--Its Relation to Insanity and Nervous Disorders--The Evil Effects of Masturbation Usually Occur on the Basis of a Congenitally Morbid Nervous System--Neurasthenia Probably the Commonest Accompaniment of Excessive Masturbation--Precocious Masturbation Tends to Produce Aversion to Coitus--Psychic Results of Habitual Masturbation--Masturbation in Men of Genius--Masturbation as a Nervous Sedative--Typical Cases--The Greek Attitude toward Masturbation--Attitude of the Catholic Theologians--The Mohammedan Attitude--The Modern Scientific Attitude--In What Sense is Masturbation Normal?--The Immense

## Part in Life Played by Transmuted Auto-erotic Phenomena.

APPENDIX A.

The Influence of Menstruation on the Position of Women.

APPENDIX B.

Sexual Periodicity in Men.

APPENDIX C.

The Auto-erotic Factor in Religion.

INDEX.

DIAGRAMS.

THE EVOLUTION OF MODESTY.