I. pt. 1. The evolution of modesty. The phenomena of sexual periodicity. Auto-erotism. pt. 2. Analysis of the sexual impulse. Love and pain. The sexual impulse in women. pt. 3. Sexual selection in man. pt. 4. Sexual inversion.
II. pt. 1. Erotic symbolism. The mechanism of detumescence. The psychic state in pregnancy. pt. 2. Eonism and other supplementary studies. pt. 3. Sex in relation to society.