'This book records the sexual development of the socially normal over an extended period, quantitatively through statistics which attempt to give collective meaning, and qualitatively through case histories in which the individual speaks. Primarily a study of love and marriage the data begin with adolescent love and include the period of engagement, as well as those of separation, divorce and widowhood.

'A gynæcologist who studied the body as an exposition of the mind questioned the pelvic organs for documentary evidence of emotional experience and accumulated records about the sex life of woman in relation to health and personality. The wife of a professional man, well-educated and urbanized, furnishes the typical case history. These personal