The psychological and anthropological character of genius in the British Isles was investigated by Ellis. Citing and collating an extensive source of information from the Dictionary of National Biography, many pieces of informational are discussed, including the ancestral heritage, geographical distribution, professions, and health and morbidity of the most the most preeminent men and women of the time. This work also promotes his theory that large cities are not only counterproductive to the development of high achievers, but detrimental to national health.