Mechanistic and vitalistic theories, teleology, creative evolution, Lamarckism, Darwinism, variation, amphimixis, protozoa, morula, coelenterata, blastula, gastrula, primitive membranes, worms, chorda dorsalis, coelom, echinodermata, mollusca, arthropoda, vertebrates.

[Chapter 2]—Evolution of the genital system.

Wolffian body, cloaca, ducts of Muller, ureter, kidney, genital ridge, sex-gland, allantois, bladder, urachus, sinus urogenitalis, urethra, perineum, anal membrane, male internal sex-organs, female internal sex-organs, genital swelling, genital tubercle, groove, male external genitals, female external genitals.

[PART III]: ANATOMY OF SEX.

[Chapter 3]—The male genitals.

The male genitals, scrotum, testicles, descent of testicles, vas deferens, spermatic cord, seminal vesicles, ductus ejaculatorii, urethra, prostate, colliculus, sinus pocularis, penis.

[Chapter 4]—Female genitals.

Mons of Venus, labia majora, minora, vestibule, bulbs, clitoris, Bartholinian glands, hymen, vagina, uterus, broad and round ligaments, tubes, ovaries, Graafian follicle, ovum.

[Chapter 5]—Secondary sexual characteristics.

Man’s figure, skeleton, laryngeal projection, shoulders, pelvis, limbs, skin, steps, gait, voice, woman’s figure, head, hair, face, neck, chest, abdomen, thighs, respiration.