Following enthusiastic responses to our first guest post (on the reception of Isaac Newton’s unorthodox works, by Kees-Jan Schilt at the Newton Project), I am pleased to invite future contributions to ‘Forbidden Histories’ (http://forbiddenhistories.wordpress.com), a history of science and medicine blog on the historiography of science and the ‘miraculous’. Contributions are welcome from historians of science and medicine at all stages of their careers, who would like to discuss their work on the history and historiography of astrology, alchemy, fascination, witchcraft, ghosts and hauntings, miraculous healings, mesmerism, vitalism, alternative medicine, spiritualism, psychical research and related topics. Guest posts should be concise (not exceeding two A4 pages), written in a manner accessible to non-specialists, and address historiographical issues related to functions of popular science and disciplinary history as knowledge management (the blog’s central concerns as laid out at http://forbiddenhistories.wordpress.com/welcome). To discuss possible contributions, please email me at [log in to unmask] Looking forward to hearing from you, Andreas Sommer, PhD Department of History and Philosophy of Science University of Cambridge http://www.hps.cam.ac.uk/people/sommer.html https://twitter.com/Sommer_HPS https://www.facebook.com/forbiddenhistories