[V. 1] The evolution of modesty, the phenomena of sexual periodicity, auto-erotism. -- [v. 2] Sexual inversion. -- [v. 3] Analysis of the sexual impulse, love and pain, the sexual impulse in women. -- [v. 4] Sexual selection in man: 1. Touch. 2. Smell. 3. Hearing. 4. Vision. -- [v. 5] Erotic symbolism, the mechanism of detumescence, the psychic state in pregnancy. -- v. 6. Sex in relation to society. -- v. 7. Eonism and other supplementary studies.