Early Science and Medicine (ESM) is a peer-reviewed international journal dedicated to the history of science, medicine and technology from the earliest times through to the end of the eighteenth century. The need to treat in a single journal all aspects of scientific activity and thought to the eighteenth century is due to two factors: to the continued importance of ancient sources throughout the Middle Ages and the early modern period, and to the comparably low degree of specialization and the high degree of disciplinary interdependence characterizing the period before the professionalization of science.