W. F. Bynum is Professor Emeritus of the History of Medicine at the University College London. He is the author of Medicine and the Five Senses (Cambridge, 1993), William Hunter and the 18th Century Medical World (Cambridge, 1985), and Science and the Practice of Medicine"(Cambridge, 1994). Anne Hardy is Reader in the History of Medicine at the Wellcome Trust Centre for the History of Medicine at the University College London. She is the author of The Epidemic Streets. Infectious Disease and the Rise of Preventive Medicine 1856-1900 and Health and Medicine in Britain since 1850. She is the co-editor of Women and Modern Medicine, and The Road to Medical Statistics. Stephen Jacyna is Senior Lecturer at the Wellcome Trust Centre for the History of Medicine at the University College London. He is the author of Nineteenth-Century Origins of Neuroscientific Concepts (with Edwin Clarke), Philosophic Whigs: Science, Medicine and Citizenship in Edinburgh, 1789-1848, and Lost Words: Narratives of Language and the Brain, 1825-1926. Christopher Lawrence is Professor of the History of Medicine at the Wellcome Trust Centre for the History of Medicine at the University College London. He is the author of Medicine in the Making of Modern Britain, and Rockefeller Money, the Laboratory and Medicine in Edinburgh 1919-1930: New Science in an Old Country. E. M. Tansey is Reader in the History of Modern Medical Sciences for the Wellcome Trust Centre for the History of Medicine, University College London. She has published in numerous medical, scientific and historical journals including Medical History, Journal of the History of Medicine, and Lancet. She is the Convenor of the Wellcome Trust's History of Twentieth Century Medicine Group, which exists to promote interaction between historians, clinicians and biomedical scientists.