Slides for the magic or optical lantern were a major tool for knowledge transfer in the second half of the 19th and early 20th centuries. Schools, universities, the church and many public and private institutions all over the world relied on the lantern for illustrated lectures and demonstrations. This volume brings together scholarly research on the educational uses of the optical lantern in different disciplines by international specialists, representing the state of the art of magic lantern research today. In addition, it contains a lab section with contributions by archivists and curators and performers reflecting on ways to preserve, present and re-use this immensely rich cultural heritage today. Authors of this collection of essays will include Richard Crangle, Sarah Dellmann, Ine van Dooren, Claire Dupré La Tour, Jenny Durrant, Francisco Javier Frutos Esteban, Anna Katharina Graskamp, Emily Hayes, Erkki Huhtamo, Martyn Jolly, Joe Kember, Frank Kessler, Machiko Kusahara, Sabine Lenk, Vanessa Otero, Carmen López San Segundo, Ariadna Lorenzo Sunyer, Daniel Pitarch, Jordi Pons, Montse Puigdeval, Angélique Quillay, Angel Quintana Morraja, Nadezhda Stanulevich, Jennifer Tucker, Kurt Vanhoutte, Márcia Vilarigues, Joseph Wachelder, Artemis Willis, Lee Wing Ki, Irene Suk Mei Wong, and Nele Wynants.

Preserving What Is Valued explores the concept of preserving heritage. It presents the conservation profession's code of ethics and discusses four significant contexts embedded in museum conservation practice: science, professionalization, museum practice, and the relationship between museums and First Nations peoples. Museum practice regarding handling and preservation of objects has been largely taken as a given, and it can be difficult to see how these activities are politicized. Clavir argues that museum practices are historically grounded and represent values that are not necessarily held by the originators of the objects. She first focuses on conservation and explains the principles and methods conservators practise. She then discusses First Nations people's perspectives on preservation, quoting extensively from interviews done throughout British Columbia, and comparing the British Columbia situation with that in New Zealand. In the face of cultural repatriation issues, museums are attempting to become more culturally sensitive to the original owners of objects, forming new understandings of the "right ways" of storage and handling of materials. Miriam Clavir's work is important for museum professionals, conservators, those working with First Nations collections in auction houses and galleries, as well as students of sociology and anthropology.

The major themes of this study include: the development of Palaeolithic archaeology, its relationship with the study of human physical anthropology in Britain and, to a lesser extent, on the Continent; links between these and the study of race and racial origins; links with geological developments in climate and glacial studies.