This book explores the lives and achievements of two Irish sisters, Edith and Florence Stoney, who pioneered the use of new electromedical technologies, especially X-rays but also ultraviolet radiation and diathermy. In addition, the narrative follows several intertwined themes as experienced by the sisters during their lifetimes. Their upbringing, influenced by their liberal-minded scientist father, set the tone for both their lives. Irish independence fractured their family heritage. Their professional experiences, fulfilling for Florence as a qualified doctor but often frustrating for Edith as a Cambridge-educated scientist, mirrored those of other aspiring women during this period, when the suffragist movement expanded and women¿s lobby groups were