24th April Seminar, in the Museum 5 p.m. Ms Patricia Kell (Wadham College) "'Distributing Happiness'? Acquisitions policy in eighteenth-century British museums." 1st May Seminar, in the Museum 5 p.m. Professor Harriet Ritvo (Clare Hall, Cambridge) "Some meanings of monsters." 2nd May The Thomas Harriot Lecture, 5 p.m. in the Champneys Room, Oriel College Dr Muriel Seltman "Thomas Harriot's algebra: reputation and reality." 3rd May Study afternoon, in the Museum and the 2 p.m. Faculty of Modern History, to mark the 150th anniversary of the Hakluyt Society "Science and geography in Imperial contexts." 8th May Workshop, at the Maison Française 9.15 a.m. "The transfer of concepts and practices in the biological and human sciences." 8th May Seminar, in the Museum 6 p.m. Mr Anthony J. Turner (Paris) "Collecting history and natural history: Robert Plot, the Ashmolean Musæum, and the Survey of Britain." 11th May 'Women and Natural History' Exhibition closes in the Bodleian 15th May Seminar, in the Museum 5 p.m. Mr Eric Jorink (University of Groningen) "Reading the Book of Nature: changing ideas on the marvels of nature in the seventeenth-century Dutch Republic." 22nd May Seminar, in the Museum 5 p.m. Dr Michael Wintroub (University of Cambridge) "Taking stock at the end of the world: millenarian eschatology, civic ritual and collecting in the Royal Entry Festival of Henri II." 23rd May Workshop, at the Maison Française, Oxford 9.15 a.m. "The transfer of concepts and practices in the physical and mathematical sciences in the nineteenth centuries." 28th May The Delta Lecture, 5 p.m. in the Danson Room, Trinity College Professor Svante Lindqvist "The bricks and mortar of science." 12th June One-day Meeting in association with the British Society for the History of Science "Images and practice"