Part 1 Human sexuality and human sex change: male to female change; Aristotelian sex; chromosomal sex and genetic sex; gonadal sex; apparent sex and legal sex; endocrine or hormonal sex; functional sex; mental sex; Deborah's own acccount; a successful female transsexual conversion; sex reversal. Part 2 Hermaphroditic and pseudohermaphroditic states in man: castration - hermaphrodites; possession three chromosomes; men with an extra y chromosome; women with an extra x chromosome; persons with two x chromosomes and one y chromosome; a bilateral hermaphrodite; gynaecomastia; pseudohermaphroditic states in man; a male pseudohermaphrodite; a female pseudohermaphrodite; multiple sex chromosomes in pseudohermaphrodites; congenital adrenocortical hyperplasia; castration and eunuchs; consequences of castration; circumcision and related interventions; female circumcision, infibulation or clitoridectomy; second circumcision, subincision or subcision; peotomy; pregnancy in men. Part 3 Transvestism: under-dressing; compulsive under-dressing; ritual transvestism; compulsive transvestism; fetishism; fetishistic transvestism; heterosexual (non-fetishistic) transvestites; Donald, a heterosexual transvestite; homosexual transvestites; drag queens; Amber's own account; homosexual transvestites who wish to be taken for women; bisexual transvestites; conclusions. Part 4 Transvestite prostitution: transvestite streetwalkers; Monica, the Vietnamese transvestite whore; transvestite escort services; a client of a transvestite escort service. Part 5 Transsexualism: male transsexuals; Dorothy's story; the other end of the spectrum. Part 6 The obsessive nature of transsexuals' desires. Part 7 Shamans, witch doctors and transsexualism: North America; a soul-flier of the American southwest; Africa; Za-Kwe's story. Part 8 Coercion to change sex: enforced sex change of athletes. Part 9 Transsexual prostitution: a transsexual prostitute and whoremaster of transvestite prostitutes; Grace's own story. Part 10 Endocrine controls of transsexuals - psychotherapy - the orgasm of male transsexuals: treatment of the female transsexual; hormonal treatment of the male transsexual; psychotherapy for transsexuals; the nature of the orgasm experienced by former transsexuals. Part 11 Surgical aspects of sex reassignment: mayhem; prerequisites for surgery; nature of the surgery in changing a man into a woman; nature of the surgery used in transforming a woman to a man; costs of surgery. Part 12 Castration of transsexuals before puberty: Belinda's own account; sex differences in the human voice. Part 13 Transsexuals and transvestites in myth and history. Part 14 Conclusions about human sex change: causes of transvestism and transsexualism.