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The ritual murder accusation is one of a series of myths that fall under the label blood libel, and describes the medieval legend that Jews require Christian blood for obscure religious purposes and are capable of committing murder to obtain it. This malicious myth continues to have an explosive afterlife in the public sphere, where Sarah Palin's 2011 gaffe is only the latest reminder of its power to excite controversy. Blood Libel is the first book-length study to analyze the recent historiography of the ritual murder accusation and to consider these debates in the context of intellectual and cultural history as well as methodology. Hannah R. Johnson articulates how ethics shapes methodological decisions in the study of the accusation and how questions about methodology, in turn, pose ethical problems of interpretation and understanding. Examining recent debates over the scholarship of historians such as Gavin Langmuir, Israel Yuval, and Ariel Toaff, Johnson argues that these discussions highlight an ongoing paradigm shift that seeks to reimagine questions of responsibility by deliberately refraining from a discourse of moral judgment and blame in favor of an emphasis on historical contingencies and hostile intergroup dynamics.

In 1921, Anton Baumstark delivered two lectures on the development of the Roman Rite to a gathering at the Abbey of Maria Laach. Abbot Ildefons Herwegen offered to publish those lectures, but Baumstark decided to write a book on the topic instead, which was published two years later as On the Historical Development of the Liturgy. It would be another sixteen years before he produced Comparative Liturgy, for which he is better known. Together the two books lay out Baumstark's liturgical methodology. Comparative Liturgy presents his method; On the Historical Development of the Liturgy offers his model. For nearly a century, On the Historical Development of the Liturgy has been valued by specialists in the field of liturgical studies, both for its description of comparative liturgy and for the portrayal of patterns Baumstark discerns in liturgical development. Also significant are the hypotheses Baumstark proposes and the evidence he brings to bear on problems in liturgical history. In this annotated edition, Fritz West provides the first English translation of this work by Anton Baumstark.