The next Ordered Universe symposium takes place at the beginning of September. From 1-3 various members of the research team will meet at Durham University, at St John’s College, to continue the programme of collaborative reading. The symposium will see the second reading of the treatise De sphera – On the Sphere, the first of the next text in our roster, the De diferentiis localibus – On Local Differences, and revision of earlier work with the treatise De liberalibus artibus – On the Liberal Arts and its Middle English translation. A full programme – complete with a public lecture by Professor Clive Siviour, Department of Engineering and Pembroke College, University of Oxford on his research into High-Speed Photography, and Grossetestes’s treatise De generatione sonorum – On the Generation of Sounds. This takes place in the Cassidy Atrium at St Chad’s College, from 5.30 and is followed by an opportunity to meet the research team, to explore some of the resources of the project, and to participate in some medieval and modern experiments.