Harris L. Coulter’s Divided Legacy has become the standard history of American Homoeopathy and a classic of medical historiography. This third volume of Divided Legacy continues the account of the conflict between Empirical and Rationalist approaches to health and introduces a socio-economic dimension. Divided Legacy III traces the history of the rise and decline of Empirical thinking in the nineteenth century United States. It analyses the interaction between Homoeopathic doctrines and pre-pharmaceutical currents of thought based on Rationalist assumptions which crystallized in the political battle between the American Medial Association and Homoeopathy.  This is an excellent book and recommended to all people who are interested in knowing more about the harmful effects of the monopoly granted the medical profession in the 1920’s.