Nicholas Jardine is emeritus professor at the Department of History and Philosophy of Science, University of Cambridge. His recent publications include La guerre des astronomes, 2 vols, Les Belles Lettres, 2008. Isla Fay is a research associate on the AHRC-funded project 'Diagrams, Figures and the Transformation of Astronomy, 1450–1650' at the Department of History and Philosophy of Science at the University of Cambridge. She has published on pre-modern health and disease, including an edition of early civic sanitary provisions.