CONTENTS OF CHAPTER XXXII
Indispensable need for the scientific investigation of sexual problems — Insignificance and ludicrous character of the objections made to such investigation — The diffusion of sexual perversities was just as extensive before their scientific study was first undertaken — de Sade’s system of psychopathia sexualis — Recent additions to the scientific literature of the subject — Works upon homosexuality — Upon erotic symbolism — General investigations regarding the sexual impulse — General works upon the sexual problem — Periodical literature relating to the sexual life.